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CCNP 350-401模拟考试题库|ENCOR最新练习题与解析合集

问题 #1
What is the difference between CEF and process switching?
A. CEF is more CPU-intensive than process switching.
B. CEF uses the FIB and the adjacency table to make forwarding decisions, whereas process switching punts each packet.
C. CEF processes packets that are too complex for process switching to manage.
D. Process switching is faster than CEF
正确答案:B
问题 #2
what is the purpose of an RP in PIM?
A. send join messages toward a multicast source SPT
B. ensure the shortest path the multicast source to the receiver
C. receive IGMP joins from multicast receivers
D. secure the communiation channel between the multicast sender and receiver
正确答案:A
问题 #3
How do agent-based versus agentless configuration management tools compare?
A. Agent-based tools do not require a high-level language interpreter such as Python or Ruby on slave nodes
B. Agentless tools require no messaging systems bet-veen master and slaves.
C. Agent-based tools do not require instaltation of additional software packages on the slave nodes
D. Agentless tools use proxy nodes to interface with slave nodes
正确答案:B
问题 #4
Refer to the exhibit. An engineer configures monitoring on SW1 and enters the show show command to verify operation. What does the output confirm?
A. SPAN session 2 monitors all traffic entering and exiting port FastEthernet 0/15.
B. SPAN session 2 only monitors egress traffic exiting port FastEthernet 0/14.
C. RSPAN session 1 is incompietety configured for monitoring.
D. RSPAN session 1 monitors activity on VLAN 50 of a remote switch.
正确答案:C
问题 #5
Refer to the exhibit. An engineer must ensure that all traffic entering AS 200 from AS 100 chooses Link 2 as an entry point. Assume that all BGP neighbor relationships have been formed and that the attributes have not been changed on any of the routers. W
A. R4(config)#route-map PREPEND permit 10
R4(config-router)#neighbor 10. 2.2.2 route-map PREPEND out
B. R3(config)#route-map PREPEND permit 10
R3(config-router)#neighbor 10. 1.1.1 route-map PREPEND out
C. R4(config)#route-map PREPEND permit 10
R4(config-router)#neighbor 10. 2.2.2 route-map PREPEND in
D. R3(config)#route-map PREPEND permit 10
R3(config-router)#neighbor 10. 2.2.2 route-map PREPEND in
正确答案:B
问题 #6
An engineer reviews a router's logs and discovers the following entry. What is the event's logging severity level? Router# *Jan 01 38:23:19.579: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up
A. warning
B. error
C. notification
D. informational
正确答案:B
问题 #7
What are two reasons a company would choose a cloud deployment over an on-prem deployment? (Choose two.)
A. In a cloud environment, the company controls technical issues. On-prem environments rely on the service provider to resolve technical issues.
B. Cloud deployments require long implementation times due to capital expenditure processes. On-prem deployments can be accomplished quickly using operational expenditure processes.
C. Cloud costs adjust up or down depending on the amount of resources consumed. On-prem costs for hardware,power, and space are on-going regardless of usage.
D. Cloud resources scale automatically to an increase in demand. On-prem requires additional capital expenditure.
E. In a cloud environment, the company is in full control of access to their dat
A. On-prem risks access to data due to service provider outages
正确答案:CD
问题 #8
Refer to the exhibit.R1 is able to ping the R3 fa0/1 interface.why do the extended pings fail?
A. R2 and R3 do not have an OSPF adjacency
B. The DF bit has been set
C. R3 is missing a return route to 10.99.69.0/30
D. The maximum packet size accepted by the command is 1476 bytes
正确答案:B
问题 #9
Refer to the exhibit.which command when applied to the Atlanta router reduces type 3 LSA flooding into the backbone area and summarizes the inter-area routes on the Dallas router?
A. Atlanta(config-router)# area 1 range 192.168.0.0 255.255.248.0
B. Atlanta(config-router)# area 1 range 192.168.0.0 255.255.252.0
C. Atlanta(config-router)# area 0 range 192.168.0.0 255.255.248.0
D. Atlanta(config-router)# area 0 range 192.168.0.0 255.255.252.0
正确答案:B
问题 #10
Refer to the exhibit.An engineer configures CoPP and enters the show command to verify the implementation.what is the result of the configuration?
A. ICMP will be denied based on this configuration
B. If traffic exceeds the specified rate,it will be transmitted and remarked
C. Class-default traffic will be dropped
D. All traffic will be policed on access-list 120
正确答案:D
问题 #11
Which two actions provide controlled Layer 2 network connectivity between virtual machines running on the same hypervisor? (Choose two.)
A. Use a virtual switch running as a separate virtual machine.
B. Use a virtual switch provided by the hypervisor
C. Use a single trunk link to an external Layer2 switch.
D. Use a single routed link to an external router on stick.
E. Use VXLAN fabric after installing VXLAN tunneling drivers on the virtual machines.
正确答案:BC
问题 #12
How does SSO work with HSRP to minimize network disruptions?
A. It enables HSRP to elect another switch in the group as the active HSRP switch.
B. It ensures fast failover in the case of link failure.
C. It enables data forwarding along known routes following a switchover, while the routing protocol reconverges.
D. It enables HSRP to failover to the standby RP on the same device
正确答案:D
问题 #13
Refer to the exhibit.A network engineer configures a GRE tunnel and enters the show interface tunnel command. what does the output confirm about the configuration?
A. interface tracking is configured
B. The tunnel mode is set to the default
C. The keepalive value is modified from the default value
D. The physical interface MTU is 1476 bytes
正确答案:B
问题 #14
Refer to exhibit.which two commands ensure that DSW1 becones the root bridge for VLAN 10 and 20?(choose two)
A. spanning-tree mst 1 root primary
B. spanning-tree mst 1 priority 1
C. spanning-tree mst vlan 10,20 priority root
D. spanning-tree mst vlan 10,20 root primary
E. spanning-tree mst 1 priority 4096
正确答案:AE
问题 #15
How does the RIB differ from the FIB?
A. The RIB is used to create network topologies and routing tables. The FIB is a list of routes to particular network destination
B. The FIB indudes many routes to a single destination. The RIB is the best route to a single destination.
C. The RIB includes many routes to the same destination prefix. The FIB contains only the best route.
D. The FIB maintains network topologies and routing tables. The RIB is a list of routes to particular network destinations.
正确答案:C
问题 #16
which antenna type should be used for a site-to-site wireless connection?
A. path
B. omnidirectional
C. dipole
D. Yagi
正确答案:D
问题 #17
which two characteristics define the intent API provided by Cisco DNA Center?(choose two)
A. northbound API
B. business outcome oriented
C. device-oriented
D. southbound API
E. procedural
正确答案:AB
问题 #18
Refer to the exhibit. PC-1 must access the web server on port 8080.To allow this traffic,which statement must be added to an access control list that is applied on SW2 port G0/0 in the inbound direction?
A. permit tcp host 192.168.0.5 It 8080 host 172.16.0.2
B. permit tcp host 172.16.0.2 host 192.168.0.5 eq 8080
C. permit tcp host 192.168.0.5 host 172.16.0.2 eq 8080
D. permit tcp host 192.168.0.5 eq 8080 host 172.16.0.2
正确答案:D
问题 #19
Refer to the exhibit^ Which command allows hosts that are connected to FastEthernetO/2 to access the Internet?
A. ip nat inside source list 10 interface FastEthemet0/1 overtoad
B. ip nat outside source static 209.165.200.225 10.10.10.0 overload
C. ip nat inside source list 10 interface FastEthernetO/2 overload
D. ip nat outside source Hst 10 interface FastEthernetO/2 overload
正确答案:A
问题 #20
How is a data modeling language used?
A. To enable data to be easily structured, grouped, validated, and replicated.
B. To represent finite and well-defined network elements that cannot be changed
C. To model the flows of unstructured data within the infrastructure.
D. To provide human readability to scnptmg languages.
正确答案:A
问题 #21
which technology is used to provide Layer 2 and Layer 3 logical networks in the Cisco SD-Access architecture?
A. underlay network
B. VPN routing/forwarding
C. easy virtual network
D. overlay network
正确答案:D
问题 #22
Refer to the exhibit Which router is the designated router on the segment 192.168.0.0/24?
A. Router NewYork because it has a higher router ID.
B. This segment has no designated router because it is a nonbroadcast network type.
C. This segment has no designated router because it is a p2p network type.
D. Router Chicago because it has a lower router ID
正确答案:C
问题 #23
Which element enables communication between guest VMs within a virtualized environment?
A. pNIC
B. vSwitch
C. virtual router
D. hypervisor
正确答案:B
问题 #24
Which router is elected the IGMP Querier when more than one router is in the same LAN segment?
A. The router with the longest uptime
B. The router with the shortest uptime.
C. The router with the highest IP address
D. The router with the lowest IP address
正确答案:D
问题 #25
Refer to the exhibit These commands have been added to the configuration of a switch. Which command flags an error if it is added to this configuration?
A. monitor session 1 source interface port-channel 6
B. monitor session 1 source vlan 10
C. monitor session 1 source interface FastEthernet0/1 rx
D. monitor session 1 source interface port-channel 7, port channel 8
正确答案:B
问题 #26
"HTTP/1.1 204 No Content" is returned when the curl -i -X DELETE command is issued. Which situation has occurred?
A. The object could not be located at the URI path.
B. The command succeeded in deleting the object.
C. The object was located at the URI, but it could not be deleted.
D. The URI was invalid.
正确答案:B
问题 #27
Refer to the exhibit. An engineer must ensure that all traffic leaving AS 200 will choose Link 2 as the exit point. Assuming that all BGP neighbor relationships have been formed and that the attributes have not been changed on any of the routers, which co
A. R3(config-router)neighbor 10.1.1.1 weight 200
B. R4(config-router)bgp default local-preference 200
C. R3(config-router)bgp default local-preference 200
D. R4(config-router)neighbor 10.2.2.2 weight 200
正确答案:B
问题 #28
Which action is performed by Link Management Protocol in a Cisco StackWise Virtual domain?
A. It rejects any unidirectional link traffic forwarding
B. It discovers the StackWise domain and brings up SVL interfaces
C. It determines which switch becomes active or standby.
D. It determines if the hardware is compatible to form the StackWise Virtual domain.
正确答案:B
问题 #29
Which entity is responsible for maintaining Layer 2 isolation between segments in a VXLAN environment?
A. host switch
B. switch fabric
C. VTEP
D. VNID
正确答案:D
问题 #30
An engineer attempts to configure a trunk between switch SW1 and switch SW2 using DTP, but the trunk does not form. Which command should the engineer apply to switch SW2 to resolve this issue?
A. switchport mode dynamic desirable
B. switchport mode access
C. no switchport
D. switchport nonegotiate
正确答案:A
问题 #31
How does the EIGRP metric differ from the OSPF metric?
A. The EIGRP metric is calculated based on bandwidth only. The OSPF metric is calculated on delay only.
B. The EIGRP metric is calculated based on delay only. The OSPF metric is calculated on bandwidth and delay
C. The EIGRP metric is calculated based on bandwidth and delay. The OSPF metric is calculated on bandwidth only.
D. The EIGRP metric is calculated based on hop count and bandwidth. The OSPF metric is calculated on bandwidth and delay
正确答案:C
问题 #32
Which deployment option of Cisco NGFW provides scalability?
A. clustering
B. high availability
C. tap
D. inline tap
正确答案:A
问题 #33
What are two considerations when using sso as a network redundancy feature? (Choose two.)
A. must be combined with NSF to support uninterrupted Layer 3 operations
B. requires synchronization between supervisors in order to guarantee continuous connectivity
C. the multicast state is preserved during switchover
D. must be combined with NSF to support uninterrupted Layer 2 operations
E. both supervisors must be configured separately
正确答案:AB
问题 #34
What is the purpose of the LISP routing and addressing architecture?
A. It creates two entries for each network node, one for its identity and another for its location on the network
B. It allows LISP to be applied as a network virtualization overlay though encapsulation
C. It allows multiple instances of a routing table to co exist within the same router
D. It creates head-end replication used to deliver broadcast and multicast frames to the entire network
正确答案:A
问题 #35
In a Cisco SD- Access fabric, which control plane protocol is used for mapping and resolving endpoints?
A. DHCP
B. VXLAN
C. SXP
D. LISP
正确答案:D
问题 #36
Refer to the exhibit. The traceroute fails from R1 to R3. What is the cause of the failure?
A. An ACL applied inbound on loopbacko of R2 is dropping the traffic.
B. Redistribution of connected routes into OSPF is not configured
C. An ACL applied inbound on fa0/1 of R3 is dropping the traffic.
D. The loopback on R3 is in a shutdown state
正确答案:C
问题 #37
Refer to the exhibit. Which two commands ensure that DSW1 becomes root bridge for VLAN 10 and 20? (Choose two)
A. spanning-tree mstp vlan 10,20 root primary
B. spanning-tree mst vlan 10,20 priority root
C. spanning-tree mst 1 root primary
D. spanning-tree mst 1 priority 4096
E. spanning-tree mst 1 priority 1
正确答案:CD
问题 #38
What is the responsibility of a secondary WLC?
A. It enables Layer 2 and Layer 3 roaming between itself and the primary controller.
B. It shares the traffic load of the LAPs with the primary controller
C. It avoids congestion on the primary controller by sharing the registration load on the LAPs.
D. It registers the LAPs if the primary controller fails.
正确答案:D
问题 #39
A wireless consultant is designing a high-density wireless network for a lecture hall for 1000 students. Which antenna type is recommended for this environment?
A. sector antenna
B. dipole antenna
C. parabolic dish
D. omnidirectional antenna
正确答案:D
问题 #40
Which command set configures RSPAN to capture outgoing traffic from VLAN3 on interface GigabitEthernet 0/3 while ignoring other VLAN trafic on the same interface?
A. monitor session 2 source interface gigabitethernet 0/3 tx
B. monitor session 2 source interface gigabitethernet 0/3 tx
C. monitor session 2 source interface gigabitethernet 0/3 rx
D. monitor session 2 source interface gigabitethernet 0/3 rx
正确答案:B
问题 #41
Refer to the exhibit Onlv administrators from the subnet 10.10.10.0/24 are permitted to have access to the router. A secure protocol must be for the remote access and management of the router instead of clear-text protocols. Which configuration achieves t
A. access-list 23 permit 10.10.10.0 0.0.0.255
B. access-list 23 permit 10.10.10.0 255.255.255.0
C. access-list 23 permit 10.10.10.0 0.0.0.255
D. access-list 23 permit 10.10.10.0 0.0.0.255
正确答案:D
问题 #42
Refer to the exhibit. An engineer must deny Telnet taffic from the loopback interface of router R3 to the loopback interface of router R2 during the weekend hours. All other traffic between the loopback interfaces of routers R3 and R2 must be allowed at a
A. R3(config )#time-range WEEKEND
R3(config)#access-list 150 deny tcp host 10. 3.3.3 host 10.2.2.2 eq 23 time-range WEEKEND
B. R1(config )#time-range WEEKEND
R1(config)#access-list 150 deny tcp host 10. 3.3.3 host 10.2.2.2 eq 23 time-range WEEKEND
C. R1(config )#time-range WEEKEND
R1(config)#access-list 150 deny tcp host 10. 3.3.3 host 10.2.2.2 eq 23 time-range WEEKEND
D. R3(config )#time-range WEEKEND
R3(config)#access-list 150 permit tcp host 10. 3.3.3 host 10.2.2.2 eq 23 time-range WEEKEND
正确答案:B
问题 #43
What is provided by the Stealthwatch component of the Cisco Cyber Threat Defense solution?
A. real-time threat management to stop DDoS attacks to the core and access networks
B. real-time awareness of users, devices, and traffic on the network
C. malware control
D. dynamic threat control for web traffic
正确答案:B
问题 #44
An engineer is configuring GigabitEthernet1/0/0 for VRRP. When the router has the highest priority in group 5, it must assume the master role. Which command set should the engineer add to the configuration to accomplish this task?
description To IDF A 38-38-720. 28
ip address 172. 16.13.2 255 255.255.0
A. vrrp 5 ip 172.16.13.254 255.255.255.0
B. standby 5 ip 172.16.13.254
C. standby 5 ip 172.16.13.254
D. vrrp 5 ip 172.16.13.254
正确答案:D
问题 #45
Which A record type should be configured for access points to resolve the IP address of a wireless LAN controller using DNS?
A. CISCO.CONTROLLER.localdomain
B. CISCO.CAPWAP.CONTROLLER.localdomain
C. CISCO-CONTROLLER.localdomain
D. CISCO-CAPWAP-CONTROLLER.localdomain
正确答案:D
问题 #46
Refer to the exhibit. An engineer has configured Cisco ISE to assign VLANs to clients based on their method of authentication, but this is not working as expected. Which action will resolve this issue?
A. enable AAA override
B. utilize RADIUS profiling
C. require a DHCP address assignment
D. set a NAC state
正确答案:A
问题 #47
An engineer must configure a ACL that permits packets which include an ACK in the TCP header. Which entry must be included in the ACL?
A. access-list 110 permit tcp any any eq 21 tcp-ack
B. access-list 10 permit ip any any eq 21 tcp-ack
C. access-list 10 permit tcp any any eq 21 established
D. access-list 110 permit tcp any any eq 21 established
正确答案:D
问题 #48
Which two sources cause interference for Wi-Fi networks? (Choose two)
A. mirrored wall
B. fish tank
C. 900MHz baby monitor
D. DECT 6.0 cordless
E. incandesent lights
正确答案:AB
问题 #49
What are two differences between the RIB and the FIB? (Choose two)
A. The FIB is derived from the data plane, and the RIB is derived from the FIB
B. The RIB is a database of routing prefixes, and the FIB is the information used to choose the egress interface for each packet
C. FIB is a database of routing prefixes, and the RIB is the information used to choose the egress interface for each packet
D. The FIB is derived from the control plane, and the RIB is derived from the FIB.
E. The RIB is derived from the control plane, and the FIB is derived from the RIB
正确答案:BE
问题 #50
What is the function of the fabric control plane node in a Cisco SD-Access deployment?
A. It is responsible for policy application and network segmentation in the fabric
B. It performs traffic encapsulation and security profiles enforcement in the fabric
C. It holds a comprehensive database that tracks endpoints and networks in the fabric
D. It provides integration with legacy nonfabric-enabled environments
正确答案:C
问题 #51
Refer to the exhibit. An engineer must allow all users in the 10.2.2.0/24 subnet to access the Internet. To conserve address space, the public interface address of 209.165.201.1 must be used for all external communication. Which command set accomplishes t
A. access-list 10 permit 10.2.2.0 0.0.0.255
B. access-list 10 permit 10.2.2.0 0.0.0.255
ip nat inside source list 10 209. 165.201.1
C. access-list 10 permit 10.2.2.0 0.0.0.255
D. access-list 10 permit 10.2.2.0 0.0.0.255
正确答案:D
问题 #52
Refer to the exhibit. After an engineer configures an EtherChannel between switch SW1 and switch SW2, this error message is logged on switch SW2. Based on the output from SW1 and the log message received on Switch SW2, what action should the engineer take
A. Configure the same protocol on the EtherChannel on switch SW1 and SW2.
B. Connect the configuration error on interface Gi0/1 on switch SW1.
C. Define the correct port members on the EtherChannel on switch SW1.
D. Correct the configuration error on interface Gi0/0 switch SW1.
正确答案:A
问题 #53
Which method does Cisco DNA Center use to allow management of non-Cisco devices through southbound protocols?
A. It creates device packs through the use of an SDK
B. It obtains MIBs from each vendor that details the APIs available
C. It uses an API call to interrogate the devices and register the returned dat
A.
D. It imports available APIs for the non-Cisco device in a CSV format.
正确答案:A
问题 #54
An engineer is installing a new pair of routers in a redundant configuration. When checking on the standby status of each router the engineer notices that the routers are not functioning as expected. Which action will resolve the configuration error?
A. configure matching hold and delay timers
B. configure matching key-strings
C. configure matching priority values
D. configure unique virtual IP addresses
正确答案:B
问题 #55
What is used to validate the authenticity of the client and is sent in HTTP requests as a JSON object?
A. SSH
B. HTTPS
C. JWT
D. TLS
正确答案:C
问题 #56
In a Cisco SD-Access wireless architecture, which device manages endpoint ID to Edge Node bindings?
A. fabric control plane node
B. fabric wireless controller
C. fabric border node
D. fabric edge node
正确答案:A
问题 #57
Which control plane protocol is used between Cisco SD-WAN routers and vSmart controllers?
A. BGP
B. OMP
C. TCP
D. UDP
正确答案:B
问题 #58
In a Cisco Catalyst switch equipped with two supervisor modules an administrator must temporally remove the active supervisor from the chassis to perform hardware maintenance on it. Which mechanism ensure that the active supervisor removal is not disrupti
A. NSF/NSR
B. SSO
C. HSRP
D. VRRP
正确答案:B
问题 #59
Refer to the exhibit. ip sla 10 icmp-echo 192.168.10.20 timeout 500 frequency 3 ip sla schedule 10 life forever start-time now track 10 ip sla 10 reachability The IP SLA is configured in a router. An engineer must configure an EEM applet to shut down the
A. event manager applet EEM_IP_SLA
B. event manager applet EEM_IP_SLA
C. event manager applet EEM_IP_SLA
D. event manager applet EEM_IP_SLA
正确答案:A
问题 #60
A network engineer is configuring Flexible NetFlow and enters these commands: Which are two results of implementing this feature instead of traditional NetFlow? (Choose two)
A. Only the flows of top 100 talkers are exported
B. CPU and memory utilization are reduced
C. The data export flow is more secure
D. The accuracy of the data to be analyzed is improved
E. The number of packets to be analyzed are reduced
正确答案:BE
问题 #61
Which feature of EIGRP is not supported in OSPF?
A. load balancing of unequal-cost paths
B. load balance over four equal-costs paths
C. uses interface bandwidth to determine best path
D. per-packet load balancing over multiple paths
正确答案:A
问题 #62
In a Cisco SD-WAN solution, how is the health of a data plane tunnel monitored?
A. with IP SLA
B. ARP probing
C. using BFD
D. with OMP
正确答案:C
问题 #63
A server running Linux is providing support for virtual machines along with DNS and DHCP services for a small business. Which technology does this represent?
A. container
B. Type 1 hypervisor
C. hardware pass-thru
D. Type 2 hypervisor
正确答案:D
问题 #64
Which characteristic distinguishes Ansible from Chef?
A. Ansible lacs redundancy support for the master server. Chef runs two masters in an active/active mode
B. Ansible uses Ruby to manage configurations. Chef uses YAML to manage configurations
C. Ansible pushes the configuration to the client. Chef client pulls the configuration from the server
D. The Ansible server can run on Linux, Unix or Windows. The Chef server must run on Linux or Unix
正确答案:C
问题 #65
What function does vxlan perform in an SD-Access deployment?
A. policy plane forwarding
B. control plane forwarding
C. data plane forwarding
D. systems management and orchestration
正确答案:C
问题 #66
Refer to the exhibit. MTU has been configured on the underlying physical topology, and no MTU command has been configured on the tunnel interfaces. What happens when a 1500-byte IPv4 packet traverses the GRE tunnel from host X to host Y, assuming the DF b
A. The packet arrives on router C without fragmentation
B. The packet is discarded on router A
C. The packet is discarded on router B
D. The packet arrives on router C fragmented
正确答案:D
问题 #67
Refer to the exhibit.An engineer is installing a new pair of routers in a redundant configuration. Which protocol ensures that traffic is not disrupted in the event of a hardware failure?
A. HSRPv1
B. GLBP
C. VRRP
D. HSRPv2
正确答案:A
问题 #68
Refer to the exhibit. Edge-01 is currently operational as the HSRP primary with priority 110. Which command on Edge-02 causes it to take over the forwarding role when Edge-01 is down?
A. standby 10 priority
B. standby 10 preempt
C. standby 10 track
D. standby 10 timers
正确答案:B
问题 #69
What is one fact about Cisco SD-Access wireless network deployments?
A. The access point is part of the fabric underlay
B. The WLC is part of the fabric underlay
C. The access point is part the fabric overlay
D. The wireless client is part of the fabric overlay
正确答案:C
问题 #70
Which QoS mechanism will prevent a decrease in TCP performance?
A. Shaper
B. Rate-Limit
C. Policer
D. Fair-Queue
E. WRED
F. LLQ
正确答案:E
问题 #71
Which statement about the default QoS configuration on a Cisco switch is true?
A. The Cos value of each tagged packet is modified
B. Port trust is enabled
C. The Port Cos value is 0
D. All traffic is sent through four egress queues
正确答案:C
问题 #72
How are the Cisco Express Forwarding table and the FIB related to each other?
A. Cisco Express Forwarding uses a FIB to make IP destination prefix-based switching decisions correct
B. The FIB is used to populate the Cisco Express Forwarding table
C. There can be only one FIB but multiple Cisco Express Forwarding tables on IOS devices
D. The Cisco Express Forwarding table allows route lookups to be forwarded to the route processor for processing before they are sent to the FIB
正确答案:A
问题 #73
Which two statements about Cisco Express Forwarding load balancing are true? (Choose two)
A. Each hash maps directly to a single entry in the RIB
B. It combines the source IP address subnet mask to create a hash for each destination
C. Cisco Express Forwarding can load-balance over a maximum of two destinations
D. It combines the source and destination IP addresses to create a hash for each destination
E. Each hash maps directly to a single entry in the adjacency table
正确答案:DE
问题 #74
Which two statements about VRF-lite are true? (Choose two)
A. It can support multiple customers on a single switch
B. It supports most routing protocols, including EIGRP, ISIS, and OSPF
C. It should be used when a customer’s router is connected to an ISP over OSPF
D. It can increase the packet switching rate
E. It supports MPLS-VRF label exchange and labeled packets
正确答案:AC
问题 #75
You have just created a new VRF on PE3. You have enabled debug ip bgp vpnv4 unicast updates on PE1, and you can see the route in the debug, but not in the BGP VPNv4 table. Which two statements are true? (Choose two)
A. After you configure route-target import 999:999 for a VRF on PE1, the route will be accepted
B. VPNv4 is not configured between PE1 and PE3
C. address-family ipv4 vrf is not configured on PE3
D. PE1 will reject the route due to automatic route filtering
E. After you configure route-target import 999:999 for a VRF on PE3, the route will be accepted
正确答案:AD
问题 #76
What is the main function of VRF-lite?
A. To connect different autonomous systems together to share routes
B. To allow devices to use labels to make Layer 2 Path decisions
C. To route IPv6 traffic across an IPv4 backbone
D. To segregate multiple routing tables on a single device
正确答案:D
问题 #77
Which LISP component do routers in the public IP network use to forward traffic between the two networks?
A. RLOC
B. map resolver
C. EID
D. map Server
正确答案:A
问题 #78
Into which two pieces of information does the LISP protocol split the device identity?(Choose two)
A. Device ID
B. Enterprise Identifier
C. LISP ID
D. Routing Locator
E. Resource Location
F. Endpoint Identifier
正确答案:DF
问题 #79
Which IPv6 OSPF network type is applied to interface Fa0/0 of R2 by default?
A. multipoint
B. broadcast
C. Ethernet
D. point-to-point
正确答案:B
问题 #80
Which EIGRP feature allows the use of leak maps?
A. neighbor
B. Stub
C. offset-list
D. address-family
正确答案:B
问题 #81
Which two statements about EIGRP load balancing are true? (Choose two)
A. Cisco Express Forwarding is required to load-balance across interfaces
B. A path can be used for load balancing only if it is a feasible successor
C. EIGRP supports unequal-cost paths by default
D. Any path in the EIGRP topology table can be used for unequal-cost load balancing
E. EIGRP supports 6 unequal-cost paths
正确答案:BE
问题 #82
Which statement about LISP encapsulation in an EIGRP OTP implementation is true?
A. LISP learns the next hop
B. OTP uses LISP encapsulation to obtain routes from neighbors
C. OTP uses LISP encapsulation for dynamic multipoint tunneling
D. OTP maintains the LISP control plane
正确答案:C
问题 #83
Which two statements about VRRP are true? (Choose two)
A. It supports both MD5 and SHA1 authentication
B. It is assigned multicast address 224.0.0.9
C. Three versions of the VRRP protocol have been defined
D. It is assigned multicast address 224.0.0.8
E. The TTL for VRRP packets must be 255
F. Its IP address number is 115
正确答案:CE
问题 #84
Which two statements about HSRP are true? (Choose two)
A. It supports unique virtual MAC addresses
B. Its virtual MAC is 0000.0C07.ACxx
C. Its default configuration allows for pre-emption
D. It supports tracking
E. Its multicast virtual MAC is 0000.5E00.01xx
正确答案:BD
问题 #85
What are three valid HSRP states? (Choose three)
A. INIT
B. listen
C. full
D. learing
E. speak
F. established
正确答案:ABE
问题 #86
Which two statements about IP SLA are true? (Choose two)
A. It uses NetFlow for passive traffic monitoring
B. It can measure MOS
C. The IP SLA responder is a component in the source Cisco device
D. It is Layer 2 transport-independent
E. It uses active traffic monitoring
F. SNMP access is not supported
正确答案:DE
问题 #87
Refer to the exhibit. Which two statements about the EEM applet configuration are true? (Choose two.)
A. The EEM applet runs before the CLI command is executed
B. The EEM applet runs after the CLI command is executed
C. The EEM applet requires a case-insensitive response
D. The running configuration is displayed only if the letter Y is entered at the CLI.
正确答案:AD
问题 #88
Refer to the exhibit. Which network script automation option or tool is used in the exhibit?
A. EEM
B. Python
C. Bash script
D. NETCONF
E. REST
正确答案:E
问题 #89
Which data modeling language is commonly used by NETCONF?
A. REST
B. YANG
C. HTML
D. XML
正确答案:B
问题 #90
Which variable in an EEM applet is set when you use the sync yes option?
A. $_cli_result
B. $_exit_status
C. $_string_result
D. $_result
正确答案:B
问题 #91
Which IPv6 migration method relies on dynamic tunnels that use the 2002::/16 reserved address space?
A. GRE
B. 6RD
C. 6to4
D. ISATAP
正确答案:C
问题 #92
A GRE tunnel is down with the error message %TUN-5-RECURDOWN: Which two options describe possible causes of the error? (Choose two.)
A. Incorrect destination IP addresses are configured on the tunnel.
B. There is link flapping on the tunnel
C. There is instability in the network due to route flapping
D. The tunnel mode and tunnel IP address are misconfigured
E. The tunnel destination is being routed out of the tunnel interface
正确答案:CE
问题 #93
Refer to the exhibit. An engineer must establish eBGP peering between router R3 and router R4. Both routers should use their loopback interfaces as the BGP router ID. Which configuration set accomplishes this task?
A. R3(config)#router bgp 200
R3(config-router)#neighbor 10. 24.24.4 remote-as 100
R3(config-router)#bgp router-id 10. 3.3.3
R4(config-router)#neighbor 10. 24.24.3 remote-as 200
R4(config-router)#bgp router-id 10. 4.4.4
B. R3(config)#router bgp 200
R3(config-router)#neighbor 10. 4.4.4 remote-as 100
R3(config-router)#neighbor 10. 4.4.4 update-source loopback0
R4(config-router)#neighbor 10. 3.3.3 remote-as 200
R4(config-router)#neighbor 10. 3.3.3 update-source loopback0
C. R3(config)#router bgp 200
R3(config-router)#neighbor 10. 24.24.4 remote-as 100
R3(config-router)#neighbor 10. 24.24.4 update-source loopback0
R4(config-router)#neighbor 10. 24.24.3 remote-as 200
R4(config-router)#neighbor 10. 24.24.3 update-source loopback0
正确答案:A
问题 #94
What is a benefit of using a Type 2 hypervisor instead of a Type 1 hypervisor?
A. ability to operate on hardware that is running other OSs
B. improved security because the underlying OS is eliminated
C. improved density and scalability
D. better application performance
正确答案:A
问题 #95
In a wireless Cisco SD-Access deployment, which roaming method is used when a user moves from one access point to another on a different access switch using a single WLC?
A. Layer 3
B. inter-xTR
C. auto anchor
D. fast roam
正确答案:B
问题 #96
Which DHCP option provides the CAPWAP APs with the address of the wireless controller(s)?
A. 43
B. 66
C. 69
D. 150
正确答案:A
问题 #97
An engineer must configure HSRP group 300 on a Cisco IOS router. When the router is functional, it must be the active HSRP router. The peer router has been configured using the default priority value. Which three commands are required? (Choose three)
A. standby 300 timers 1 110
B. standby 300 priority 90
C. standby 300 priority 110
D. standby version 2
E. standby version 1
F. standby 300 preempt
正确答案:CDF
问题 #98
In a traditional 3 tier topology, an engineer must explicitly configure a switch as the root bridge and exclude it from any further election process for the spanningtree domain. Which action accomplishes this task?
A. Configure the spanning-tree priority to 32768
B. Configure root guard and portfast on all access switch ports
C. Configure BPDU guard in all switch-to-switch connections
D. Configure the spanning-tree priority equal to 0
正确答案:B
问题 #99
Refer to the exhibit. Cisco DNA Center has obtained the username of the client and the multiple devices that the client is using on the network. How is Cisco DNA Center getting these context details?
A. Those details are provided to Cisco DNA Center by the Identity Services Engine
B. The administrator had to assign the username to the IP address manually in the user database tool on Cisco DNA Center
C. User entered those details in the Assurance app available on iOS and Android devices
D. Cisco DNA Center pulled those details directly from the edge node where the user connected
正确答案:A
问题 #100
Which QoS queuing method transmits packets out of the interface in the order the packets arrive?
A. custom
B. weighted- fair
C. FIFO
D. priority
正确答案:C
问题 #101
Refer to the exhibit. Which command must be applied to Router1 to bring the GRE tunnel to an up/up state?
A. Router1(config-if)#tunnel source Loopback0
B. Router1(config-if)#tunnel source GigabitEthernet0/1
C. Router1(config-if)#tunnel mode gre multipoint
D. Router1(config)#interface tunnel0
正确答案:A
问题 #102
Refer to the exhibit. Security policy requires all idle-exec sessions to be terminated in 600 seconds. Which configuration achieves this goal?
A. line vty 0 15
B. line vty 0 15
C. line vty 0 15
D. line vty 0 4
正确答案:A
问题 #103
A wireless consultant is designing a high-density wireless network for a lecture hall for 1000 students. Which antenna type is recommended for this environment?
A. sector antenna
B. dipole antenna
C. parabolic dish
D. omnidirectional antenna
正确答案:D
问题 #104
Refer to the exhibit. How can you configure a second export destination for IP address 192.168.10.1?
A. Specify a different TCP port
B. Specify a different UDP port
C. Specify a VRF
D. Configure a version 5 flow-export to the same destination
E. Specify a different flow ID
正确答案:B
问题 #105
Refer to exhibit. What are two reasons for IP SLA tracking failure? (Choose two )
A. The source-interface is configured incorrectly
B. The destination must be 172.30.30.2 for icmp-echo
C. A route back to the R1 LAN network is missing in R2
D. The default route has wrong next hop IP address
E. The threshold value is wrong
正确答案:AC
问题 #106
Which protocol is responsible for data plane forwarding in a Cisco SD-Access deployment?
A. VXLAN
B. IS-IS
C. OSPF
D. LISP
正确答案:A
问题 #107
Refer to the exhibit. An engineer entered the no spanning-tree bpduguard enable on interface fa1/0/7 command. Which statement describes the effect of this command?
A. Fa1/0/7 remains in err-disabled state until the shutdown/no shutdown command is entered in the interface configuration mode
B. Interface Fa1/0/7 remains in err-disabled state until the errdisable recovery cause bpduguard command is entered in the interface configuration mode
C. Fa1/0/7 remains in err-disabled state until the errdisable recovery bpduguard command is entered in the interface configuration mode
D. Interface Fa1/0/7 remains in err-disabled state until the spanning-tree portfast bpduguard disable command is entered in the interface configuration mode
E. Interface Fa1/0/7 returns to an up and operational state
正确答案:A
问题 #108
Refer to the exhibit. On which interfaces should VRRP commands be applied to provide first hop redundancy to PC-01 and PC-02?
A. G0/0 on Edge-01 and G0/0 on Edge-02
B. G0/1 on Edge-01 and G0/1 on Edge-02
C. G0/0 and G0/1 on Core
D. G0/0 and G0/1 on ASW-01
正确答案:B
问题 #109
Refer to the exhibit. Which configuration allows Customer2 hosts to access the FTP server of Customer1 that has the IP address of 192.168.1.200?
A. ip route vrf Customer1 172.16.1.0 255.255.255.0 172.16.1.1 global
ip route vrf Customer2 192. 168.1.200 255.255.255.255 192.168.1.1 global
ip route 192. 168.1.0 255.255.255.0 Vlan10
ip route 172. 16.1.0 255.255.255.0 Vlan20
B. ip route vrf Customer1 172.16.1.0 255.255.255.0 172.16.1.1 Customer2
ip route vrf Customer2 192. 168.1.200 255.255.255.255 192.168.1.1 Customer1
C. ip route vrf Customer1 172.16.1.0 255.255.255.0 172.16.1.1 Customer1
ip route vrf Customer2 192. 168.1.200 255.255.255.255 192.168.1.1 Customer2
D. ip route vrf Customer1 172.16.1.1 255.255.255.255 172.16.1.1 global
ip route vrf Customer2 192. 168.1.200 255.255.255.0 192.168.1.1 global
ip route 192. 168.1.0 255.255.255.0 Vlan10
ip route 172. 16.1.0 255.255.255.0 Vlan20
正确答案:A
问题 #110
Refer to the exhibit. Which password allows access to line con 0 for a username of "tommy" under normal operation?
A. Cisco
B. local
C. 0 Cisco
D. Tommy
正确答案:A
问题 #111
Which tunneling technique is used when designing a Cisco SD-Access fabric data plane?
A. VXLAN
B. VRF Lite
C. VRF
D. LISP
正确答案:A
问题 #112
An engineer has deployed a single Cisco 5520 WLC with a management IP address of 172.16.50.5/24. The engineer must register 50 new Cisco AIR-CAP2802IE-K9 access points to the WLC using DHCP option 43. The access points are connected to a switch in VLAN 10
A. configure option 43 Hex F104.AC10.3205
B. configure option 43 Hex F104.CA10.3205
C. configure dns-server 172.16.50.5
D. configure dns-server 172.16.100.1
正确答案:A
问题 #113
Why would a log file contain a * next to the date?
A. The network device is not configured to use NTP time stamps for logging
B. The network device was unable to reach the NTP server when the log messages were recorded.
C. The network device is not configured to use NTP
D. The network device was receiving NTP time when the log messages were recorded
正确答案:C
问题 #114
Refer to the exhibit. A GRE tunnel has been created between HQ and BR routers. What is the tunnel IP on the HQ router?
A. 209.165.202.130
B. 10.111.111.2
C. 10.111.111.1
D. 209.165.202.134
正确答案:C
问题 #115
A customer has deployed an environment with shared storage to allow for the migration of virtual machines between servers with dedicated operating systems that provide the virtualization platform. What is this operating system described as?
A. hosted virtualization
B. type 1 hypervisor
C. container oriented
D. decoupled
正确答案:B
问题 #116
Refer to the exhibit. What is the JSON syntax that is formed from the data?
A. Make":'Gocar, "Model": "Zoom", "Features": ["Power Windows", "Manual Dnve", "Auto AC"]}
B. ("Make":[ "Gocar", "Model": "Zoom"], Features": ["Power Windows", "Manual Drive", "Auto AC"]}
C. {"Make": Gocar, "Model": Zoom, "Features": Power Windows, Manual Drive, Auto AC}
D. {"Make": "Gocar", "Model": "Zoom", "Features": ["Power Windows", "Manual Drive", "Auto AC"]}
正确答案:D
问题 #117
In OSPF, which LAS type is responsible for pointing to the ASBR router?
A. type 1
B. type 2
C. type 3
D. type 4
正确答案:D
问题 #118
An engineer is configuring GigabitEthernet1/0/0 for VRRP. When the router has the highest priority In group 5, It must assume the master role. Which command set should the engineer add to the configuration to accomplish this task?
ip address 172. 16.13.2 255.255.255.0
A. standby 5 ip 172.16.13.254
B. vrrp 5 ip 172.16.13.254 255.255.255.0
C. standby 5 ip 172.16.13.254
D. vrrp 5 ip 172.16.13.254
正确答案:D
问题 #119
Which HHTP status code is the correct response for a request with an incorrect password applied to a REST API session?
A. HTTP Status Code 200
B. HTTP Status Code 302
C. HTTP Status Code 401
D. HTTP Status Code: 504
正确答案:C
问题 #120
Refer to the exhibit,which configuration must be applied to R1 to enbale R1 to reach the server at 172.16.0.1 ?
A. interface Ethernet 0/0
ip address 172. 16.0.7 255.255.0.0
network 172. 16.0.0 0.0.255.255 area 0
B. interface Ethernet 0/0
ip address 172. 16.0.7 255.255.0.0
network 172. 16.0.0 0.0.255.255 area 0
C. interface Ethernet 0/0
ip address 172. 16.0.7 255.255.0.0
network 172. 16.0.0 0.0.255.255 area 0
D. interface Ethernet 0/0
ip address 172. 16.0.7 255.255.0.0
network 172. 16.0.0 0.0.255.255 area 0
正确答案:B
问题 #121
Refer to the exhibit.What does the snippet of code achive?
A. It opens an ncclient connection to a cisco Nexus device and maintains it for the duration of the context
B. It creates an SSH connection using the SSH key that is stored,and the password is ignored
C. It opens a tunnel and encapsulates the login information,if the host key is correct
D. It creates a temporary connection to a Cisco Nexus device and retrieves a token to be used for API calls
正确答案:A
问题 #122
Using the EIRP formula.what parameter is subtracted to determine the EIRP value ?
A. transmitter power
B. antenna cable loss
C. antenna gain
D. signal-to-noise ratio
正确答案:B
问题 #123
In Cisco SD-WAN,which protocol is used to measure link quality ?
A. BFD
B. RSVP
C. IPsec
D. OMP
正确答案:A
问题 #124
Refer to the exhibit. Which level message does the WLC send to the syslog server?
A. syslog level errors and less severity messages
B. syslog level errors messages
C. all syslog levels messages
D. syslog level errors and greater severity messages
正确答案:A
问题 #125
Refer to the exhibit. An engineer is designing a guest portal on Cisco ISE using the default configuration. During the testing phase, the engineer receives a warning when displaying the guest portal. Which issue is occurring?
A. The server that is providing the portal has an expired certificate
B. The server that is providing the portal has a self-signed certificate
C. The connection is using an unsupported protocol
D. The connection is using an unsupported browser
正确答案:B
问题 #126
Which two actions, when applied in the LAN network segment, will facilitate Layer 3 CAPWAP discovery for lightweight AP? (Choose two.)
A. Utilize DHCP option 43
B. Configure WLC IP address on LAN switch
C. Enable port security on the switch port.
D. Utilize DHCP option 17
E. Configure an ip helper-address on the router interface.
正确答案:AE
问题 #127
Refer to the exhibit. What step resolves the authentication issue?
A. use basic authentication
B. change the port to 12446
C. target 192 168.100.82 in the URI
D. restart the vsmart host
正确答案:C
问题 #128
Which data is properly formatted with JSON?
A. {
B. {
C. {
D. {
正确答案:A
问题 #129
Refer to the exhibit. An engineer must assign an IP address of 192. 168.1.1/24 to the GigabitEthemnet interface. Which two commands must be.added to the existing configuration to accomplish this task? (Choose two.)
A. Router(config-if)#ip address 192.168.1.1 255.255.255.0
B. Router(config-if)#address-family ipv4
C. Router(config-vrf)#address-family ipv6
D. Router(config-vrf)#address-family ipv4
E. Router(config-vrf)#ip address 192.168.1.1 255.255.255.0
正确答案:AD
问题 #130
A company has an existing Cisco 5520 HA cluster using SSO. An engineer deploys a new single Cisco Catalyst 9800 WLC to test new features. The engineer successfully configures a mobility tunnel between the 5520 cluster and 9800 WLC.Clients connected to the
A. mobility MAC on the 5520 cluster
B. mobility MAC on the 9800 WLC
C. new mobility on the 5520 cluster
D. new mobility on the 9800 WLC
正确答案:B
问题 #131
Which three methods does Cisco DNA Center use to discover devices? (Choose three.)
A. CDP
B. SNMP
C. LLDP
D. ping
E. NETCONF
F. a specified range of IP addresses
正确答案:ACF
问题 #132
What is the difference between the MAC address table and TCAM?
A. The MAC address table supports partial matches. TCAM requires an exact match
B. TCAM is used to make L2 forwarding decisions. CAM is used to build routing tables
C. The MAC address table is contained in TCAM. ACL and QoS information is stored in CAM
D. Router prefix lookups happen in TCAM. MAC address table lookups happen in CAM.
正确答案:D
问题 #133
The following system log message is presented after a network administrator configures a GRE tunnel: %TUN-RECURDOWN Interface Tunnel 0 temporarily disabled due to recursive routing Why is Tunnel 0 disabled?
A. Because dynamic routing is not enabled
B. Because the tunnel cannot reach its tunnel destination.
C. Because the best path to the tunnel destination is through the tunnel itself
D. Because the router cannot recursively identify its egress forwarding interfac
正确答案:C
问题 #134
Refer to the exhibit. A network engineer must simplify the IPsec configuration by enabling IPsec over GRE using IPsec profiles. Which two configuration changes accomplish this? (Choose two).
A. Remove the crypto map and modify the ACL to allow traffc between 10.10.0.0/24 to 10.20.0.0/24.
B. Create an IPsec profile, associate the transform-set ACL, and apply the profile to the tunnel interface.
C. Apply the crypto map to the tunnel interface and change the tunnel mode to tunnel mode ipsec ipv4
D. Remove all configuration related to crypto map from R1 and R2 and eliminate the ACL
E. Create an IPsec profile, associate the transform-set, and apply the profile to the tunnel interface.
正确答案:DE
问题 #135
Refer to the exhibit. All switches are confiqured with the default port priority value. Which two commands ensure that traffic from PC1 is forwarded over the Gi1/3 trunk port between DSW1 and DSW2? (Choose two.)
A. DSW1 (config-if)#spanning-tree port-priority 0
B. DSW2(config-if)#spanning-tree port-priority 128
C. DSW2(config-if)#spanning-tree port-priority 16
D. DSW2(config)#interface gi1/3
E. DSW1(config)#interface gi1/3
正确答案:CD
问题 #136
Which encryption hashing algorithm does NTP use for authentication?
A. SSL
B. MD5
C. AES128
D. AES256
正确答案:B
问题 #137
A customer has completed the installation of a Wi-Fi 6 greenfield deployment at their new campus. They want to leverage Wi-Fi 6 enhanced speeds.on the trusted employee WLAN. To configure the employee WLAN, which two Layer 2 security policies should be use
A. WPA (AES)
B. WEP
C. WPA2 (AES)
D. 802.1X
E. OPEN
正确答案:CD
问题 #138
Refer to the exhibit. A network engineer configures OSPF and reviews the router confguration. Which interface or interfaces are able to establish OSPF adjacency?
A. GigabitEthernet0/1 and GigabitEthemnet0/1.40
B. only GigabitEthernet0/0
C. GigabitEthernet0/0 and GigabitEthernet0/1
D. only GigabitEthernet0/1
正确答案:B
问题 #139
Refer to the exhibit. Communication between London and New York is down. Which command set must be applied to resolve this issue?
A. NewYork(config)int f0/1
B. NewYork(config)int f0/1
C. NewYork(config)#int f0/1
D. NewYork(config)#int f0/1
正确答案:C
问题 #140
What is YANG used for?
A. scraping data via CLI
B. processing SNMP read-only polls
C. describing data models
D. providing a transport for network configuration data between client and server
正确答案:C
问题 #141
An engineer must configure a GRE tunnel interface in the default mode. The engineer has assigned an IPv4 address on the tunnel and sourced the tunnel from an Ethernet interface. Which additional configuration must be made on the tunnel interface?
A. (config-if)# tunnel destination
B. (config-if)# keepalive
C. (config-if)# ip tcp adjust-mss
D. (config-if)# ip mtu svalue>
正确答案:A
问题 #142
Refer to the exhibit. Which action resolves the EtherChannel issue between SW2 and SW3?
A. Configure channel-group 1 mode active on both interfaces
B. Configure switchport mode trunk on SW2
C. Configure switchport nonegotiate on SW3
D. Configure channel-group 1 mode desirable on both interfaces
正确答案:A
问题 #143
Which two network problems indicate a need to implement QoS in a campus network? (Choose two.)
A. port flapping
B. excess jitter
C. misrouted network packets
D. duplicate IP addresses
E. bandwidth-related packet loss
正确答案:BE
问题 #144
Refer to the exhibit Which configuration change ensures that R1 is the active gateway whenever it is in a functional state for the 172. 30.110.0/24 network?
A. R2
B. R1
C. R1
D. R2
正确答案:C
问题 #145
In a Cisco SD-Access solution, what is the role of the Identity Services Engine?
A. It is leveraged for dynamic endpoint to group mapping and policy definition.
B. It provides GUI management and abstraction via apps that share context
C. It is used to analyze endpoint to app flows and monitor fabric status
D. It manages the LISP EID database.
正确答案:A
问题 #146
Which two methods are used to reduce the AP coverage area? (Choose two.)
A. Reduce AP transmit power.
B. Reduce channel width from 40 MHz to 20 MHz.
C. Disable 2.4 GHz and use only 5 GHz.
D. Increase minimum mandatory data rate.
E. Enable Fastlane.
正确答案:AD
问题 #147
Which outcome is achieved with this Python code? client.connect (ip, port= 22, username= usr, password= pswd ) stdin, stdout, stderr = client.exec_command ('show ip bgp 192.168.101.0 bestpathin') print (stdout)
A. connects to a Cisco device using SSH and exports the BGP table for the prefix
B. connects to a Cisco device using SSH and exports the routing table information
C. displays the output of the show command in a formatted way
D. connects to a Cisco device using Telnet and exports the routing table information
正确答案:A
问题 #148
Which technology does VXLAN use to provide segmentation for Layer 2 and Layer 3 traffic?
A. VNI
B. VRF
C. bridge domain
D. VLAN
正确答案:A
问题 #149
Based on the output below, which Python code shows the value of the "upTime" key? { "response": [{ "family": "Routers", "type. "Cisco ASR 1001-X Router", "errorCode": null "location": null,macAddress" "00:c8:8b:80:bc:00", "hostname": "asr1001-x abcinc", "
A. json_data = json.loads(response text)
B. json_data = response.json()
C. json_data = response.json()
D. json_data = response.json()
正确答案:B
问题 #150
Refer to the exhibit. Which two facts does the device output confirm? (Choose two.)
A. The device's HSRP group uses the virtual IP address 10.0.3.242
B. The device is configured with the default HSRP priority.
C. The standby device is configured with the default HSRP priority.
D. The device is using the default HSRP hello timer.
E. The device sends unicast messages to its peers.
正确答案:CD
问题 #151
In a three-tier hierarchical campus network design, which action is a design best-practice for the core layer?
A. provide QoS prioritization services such as marking, queueing, and classification for critical network traffic.
B. provide redundant Layer 3 point-to-point links between the core devices for more predictable and faster convergence
C. provide advanced network security features such as 802.1X. DHCP snooping, VACLs, and port security
D. provide redundant aggregation for access layer devices and first-hop redundancy protocols such as VRRP
正确答案:B
问题 #152
What is a VPN in a Cisco SD-WAN deployment?
A. common exchange point between two different services
B. attribute to identify a set of services offered in specific places in the SD-WAN fabric
C. virtualized environment that provides traffic isolation and segmentation in the SD-WAN fabric
D. virtual channel used to carry control plane information
正确答案:C
问题 #153
What is an emulated machine that has dedicated compute, memory, and storage resources and a fully installed operating system?
A. container
B. mainframe
C. host
D. virtual machine
正确答案:D
问题 #154
Which entity is a Type 1 hypervisor?
A. Oracle VM VirtualBox
B. VMware server
C. Citrix XenServer
D. Microsoft Virtual PC
正确答案:C
问题 #155
Refer to the exhibit. Which type of antenna is shown on the radiation patterns?
A. omnidirectional
B. Yagi
C. dipole
D. patch
正确答案:C
问题 #156
Refer to the exhibit. Which JSON syntax is derived from this data?
A. {[{'First Name': Johnny', "Last Name': 'Table', "Hobbies': [Running', Video games']}, {First Name' 'Billy, "Last Name': 'Smith', "Hobbies': ['Napping', 'Reading']}]}
B. {'Person': [{First Name': 'Johnny', 'Last Name': 'Table', "Hobbies: 'Running', 'Video games'}, {First Name': 'Billy', 'Last Name': 'Smith', "Hobbies": Napping', Reading'}]}
C. {[{'First Name': 'Johnny', "Last Name': 'Table', 'Hobbies': 'Running', 'Hobbies': 'Video games'}, {'First Name': 'Billy', 'Last Name': 'Smith','Hobbies': 'Napping', 'Hobbies': 'Reading'}]}
D. {'Person': {{'First Name': 'Johnny', 'Last Name': 'Table', 'Hobbies': ['Running', 'Video games']}, {'First Name': 'Billy', 'Last Name': 'Smith','Hobbies':['Napping', 'Reading']}]}
正确答案:D
问题 #157
In a fabric-enabled wireless network, which device is responsible for maintaining the endpoint ID database?
A. fabric border node
B. fabric edge node
C. fabric wireless controller
D. control plane node
正确答案:D
问题 #158
Refer to the exhibit A network administrator confiqured RSPAN to troubleshoot an issue between switch1 and switch2. The switches are connected using interface GigabitEthernet 1/1. An external packet capture device is connected to swich2 interface GigabitE
A. switch2(config)# monitor session 2 destination vlan 10
B. switch1(config)# interface GigabitEthernet 1/1
C. switch2(config)# monitor session 1 source remote vlan 70
D. switch2(config-if)# switchport trunk allowed vlan 10,20,30,40,50,60,70-80
E. switch2(config)# monitor session 1 source remote vlan 70
正确答案:DE
问题 #159
What is the data policy in a Cisco SD-WAN deployment?
A. list of ordered statements that define node configurations and authentication used within the SDWAN overlay
B. Set of statements that defines how data is forwarded based on IP packet information and specific VPNs
C. detailed database mapping several kinds of addresses with their corresponding location
D. group of services tested to guarantee devices and links liveliness within the SD-WAN overlay
正确答案:B
问题 #160
What ate two characteristics of Cisco SD-Access elements? (Choose two )
A. The border node is required for communication between fabric and nonfabric devices.
B. Fabric endpoints are connected directly to the border node
C. Traffic within the fabric always goes through the control plane node
D. The control plane node has the full RLOC-to-EID mapping database
E. The border node has the full RLOC-to-EID mapping database
正确答案:AD
问题 #161
What is a characteristic of a virtual machine?
A. It must be aware of other virtual machines, in order to allocate physical resource for them
B. It is deployable without a hypervisor to host it
C. It must run the same operating system as its host
D. It relies on hypervisor to allocate computing resources for it
正确答案:D
问题 #162
How do stratum levels relate to the distance from a time source?
A. Stratum 0 devices are connected directly to an authoritative time source
B. Stratum 1 devices are connected directly to an authoritative time source
C. Stratum 15 devices are connected directly to an authoritative time source
D. Stratum 15 devices are an authoritative time source
正确答案:B
问题 #163
What is the function of a fabric border node in a Cisco SD-Access environment?
A. To collect traffic flow information toward external networks
B. To connect the Cisco SD-Access fabric to another fabric or external Layer 3 networks
C. To attach and register clients to the fabric
D. To handle an ordered list of IP addresses and locations for endpoints in the fabric
正确答案:B
问题 #164
Which AP mode allows an engineer to scan configured channels for rogue access points?
A. sniffer
B. monitor
C. bridge
D. local
正确答案:B
问题 #165
Refer to the exhibit. Communication between London and New York is down. Which command set must be applied to the New York switch to resolve this issue?
A. NewYork(config)# no int po1
B. NewYork(config)# no int po1
C. NewYork(config)# no int po1
D. NewYork(config)# no int po1
正确答案:D
问题 #166
Refer to the exhibit. The trunk between Gig1/0/1 of switch SW2 and Gig1/0/1 of switch SW1 is not operational. Which action resolves this issue?
A. Configure both interfaces in dynamic auto DTP mode and ensure that the switches are in the same VTP domain
B. Configure both interfaces in dynamic desirable DTP mode and ensure that the switches are in the same VTP domain
C. Configure both interfaces in nonegotiate and ensure that the switches are in the different VTP domain
D. Configure both interfaces in dynamic auto DTP mode and ensure that the switches are in the different VTP domain
正确答案:B
问题 #167
Refer to the exhibit. What is the effect of introducing the sampler feature into the Flexible NetFlow configuration on the router?
A. NetFlow updates to the collector are sent 50% less frequently
B. Every second IPv4 packet is forward to the collector for inspection
C. CPU and memory utilization are reduced when compared with what is required for full NetFlow
D. The resolution of sampling data increases, but it requires more performance from the router
正确答案:C
问题 #168
Which signal strength and noise values meet the minimum SNR for voice networks?
A. signal strength -69 dBm, noise 94 dBm
B. signal strength -67 dBm, noise 91 dBm
C. signal strength -68 dBm, noise 89 dBm
D. signal strength -66 dBm, noise 90 dBm
正确答案:B
问题 #169
Refer to the exhibit. Which command must be added to enable R2 to take over as master when Serial Interface 0/0.1 is down on R1?
A. R1# no standy 100 track 26
B. R2# no standy 100 track 26
C. R2# standy 100 preempt
D. R2# standy 100 priority 100
正确答案:C
问题 #170
Which new enhancement was implemented in Wi-Fi 6?
A. 4096 Quadrature Amplitude Modulation Mode
B. Channel bonding
C. Wi-Fi Protected Access 3
D. Uplink and Downlink Orthogonal Frequency Division Multiple Access
正确答案:D
问题 #171
How does IGMP function with multicast routing and PIM?
A. IGMP is enabled automatically when multicast routing and PIM are configured on a router
B. IGMP is incompatible with multicast routing
C. IGMP is incompatible with PIM
D. IGMP must be enabled manually when multicast routing and PIM are configured on a router.
正确答案:A
问题 #172
An engineer is concerned with the deployment of a new application that is sensitive to inter-packet delay variance. Which command configures the router to be the destination of jitter measurements?
A. Router(config)# ip sla responder tcp-echo 172.29.139.134 5000
B. Router(config)# ip sla responder udp-echo 172.29.139.134 5000
C. Router(config)# ip sla responder tcp-connect 172.29.139.134 5000
D. Router(config)# ip sla responder udp-connect 172.29.139.134 5000
正确答案:B
问题 #173
If the maximum power level assignment for global TPC 802.11a/n/ac is configured to 10dBm, which power level effectively doubles the transmit power?
A. 13 dBm
B. 14 dBm
C. 17 dBm
D. 20 dBm
正确答案:A
问题 #174
Refer to the exhibit.An engineer is configuring an EtherChannel beween switch 1 and switch 2 and notice the console message on switch2.Based on the output,which action resolves this issue?
A. configure more menmber ports on switch 1
B. configure the same port channel interface number on both switches
C. configure less member ports on switch2
D. configure the same EtherChannel protocol on both switches
正确答案:D
问题 #175
Refer to the exhibit.An engineer must create a script that appends the output of hte show process cpu sorted command to a file.which action completes the configuration?
A. action 4.0 syslog command "show process cpu sorted | append flash:high-cpu-file"
B. action 4.0 cli command "show process cpu sorted | append flash:high-cpu-file"
C. action 4.0 cns-event "show process cpu sorted | append flash:high-cpu-file"
D. action 4.0 publish-event "show process cpu sorted | append flash:high-cpu-file"
正确答案:B
问题 #176
which unit is used to express the signal-to-nose ratio ?
A. mw
B. amp
C. db
D. dbm
正确答案:C
问题 #177
Refer to the exhibit.Which Python code snippet prints the descriptions of disabled interfaces only ?
A. for interface in netconf_data["GigabitEthernet"]:
B. for interface in netconf_data["GigabitEthernet"]:
C. for interface in netconf_data["GigabitEthernet"]:
D. for interface in netconf_data["GigabitEthernet"]:
正确答案:B
问题 #178
Which function does a fabric AP perform in a Cisco SD-Access deployment?
A. It updates wireless clients' locations in the fabric
B. It connects wireless clients to the fabric
C. It manages wireless clients' membership information in the fabric
D. It configures security policies down to wireless clients in the fabric
正确答案:B
问题 #179
How do cloud deployments differ from on-prem deployments?
A. Cloud deployments are more customizable than on-premises deployments
B. Cloud deployments require longer implementation times than on-premises deployments
C. Cloud deployments require less frequent upgrades than on-premises deployments
D. Cloud deployments have lower upfront costs than on-premises deployments
正确答案:D
问题 #180
What is a Type 2 hypervisor?
A. installed as an application on an already installed operating system
B. runs directly on a physical server and includes its own operating system
C. supports over-allocation of physical resources
D. also referred to as a "bare metal hypervisor" because it sits directly on the physical server
正确答案:A
问题 #181
Which solution do laaS service providers use to extend a Layer 2 segment across a Layer 3 network?
A. VLAN
B. VTEP
C. VXLAN
D. VRF
正确答案:C
问题 #182
What is the calculation that is used to measure the radiated power of a signal after it has gone through the radio, antenna cable, and antenna?
A. dBi
B. EIRP
C. dBm
D. mW
正确答案:B

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