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拥有CCNP认证，能够参加300-910考试，同时还有相关的历年真题和学习资料。此外，还可以使用Cisco DEVNet平台来辅助学习300-910考试的内容。

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问题 #1

Given this "debug isdn q921" output, what is the problem with the PRI?

A. Layer 1 is down on the controller.

B. PRI does not have an IP address configured on the interface.

C. Nothing, the PRI is sending keepalives.

D. Layer 2 is down on the controller.

正确答案：A

问题 #2

Which Cisco Unified Communications Manager service parameter should be enabled disconnect a multiparty call when the call initiator hangs up?

A. Drop Ad Hoc Conference

B. H.225 Black Setup Destination

C. Block OffNet To OffNet Transfer

D. Enterprise Feature Access Code for Conference

正确答案：AB

问题 #3

An engineer is configuring a BOT device for a Jabber user in Cisco Unified Communication Manager Which phone type must be selected?

A. third-party SIP device

B. Cisco Dual Mode for iPhone

C. Cisco Dual Mode for Android

D. Cisco Unified Client Services Framework

正确答案：AB

问题 #4

You are adding regions in Cisco Unified Communications Manager. Which codec(s) are selected when a call is placed if you set up the max audio bit rate to use 8 kbps?

A. G.729

B. G 729 and G.711ulaw

C. G.711ulaw and G 711alaw

D. G.722

正确答案：D

问题 #5

Which transport protocol does the application layer protocol SNMP use?

A. XML

B. UDP

C. SIP

D. HTTP

正确答案：D

问题 #6

Which two DNS records must be created to configure Service Discovery for or premises Jabber? (Choose two.)

A. _cisco-uds._tls.cisco.com pointing to the IP address of Cisco Unified Communications Manager

B. _cuplogin._tcp.cisco.com pointing to a record of IM&P

C. _cuplogin._tls.cisco com pointing to the IP address of IM&P

D. _cisco-uds._tcp.cisco com painting to a record of Cisco Unified CM

E. _xmpp._tls.cisco.com pointing to a record of IM&P

正确答案：D

问题 #7

Which two types of device are supported by the Bulk Administration Tool? (Choose two.)

A. H.322 clients

B. Cisco Unified IP phones (all models)

C. SIP trunks

D. H.225 trunks

E. music on hold servers

正确答案：D

问题 #8

Which recommendation is the best practice for marking video and voice media in a Cisco Unified Communications network?

A. Voice Cos 5 (IP Precedence 6, PHB AF41, or DSCP 16)Video Cos 4 (IP Precedence 5, PHB EF, or DSCP 32)

B. Voice Cos 6 (IP Precedence 4, PHB AF41, or DSCP 24)Video Cos 5 (IP Precedence 4, PHB EF, or DSCP 34)

C. Voice Cos 5 (IP Precedence 2, PHB EF, or DSCP 48) Video Cos 4 (IP Precedence 4, PHB AF41, or DSCP 46)

D. Voice Cos 5 (IP Precedence 5, PHB EF, or DSCP 46) Video Cos 4 (IP Precedence 4, PHB AF41, or DSCP 34)

正确答案：A

问题 #9

You deploy Mobile and Remote Access for Jabber and discover that Jabber for Windows does no register to Cisco Unified Communication Manager while outside of the office. What is a cause of this issue?

A. Server 4.2.2.2 is not a valid DNS server.

B. The DNS record should be created for _cisco-uds._tcp.example.com.

C. The DNS record should be changed from _collab-edge._tcp.example.com to _collab-edge _tls.example.com.

D. The DNS record type should be changed from SRV to A.

正确答案：A

问题 #10

Which configuration tells a switch part to send Cisco Discovery Protocol packets that configure an attached Cisco IP phone to trust tagged traffic that is received from a device that is connected to the access port on the Cisco IP phone?

A. Router# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend

B. Router# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend cos 3

C. Router# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos trust extend cos 5

D. Router# configure terminalRouter(config)# interface gigabitethernet 5/1 Router(config-if)# platform qos extend trust

正确答案：D

问题 #11

What causes poor voice quality and video pixelization in a video call?

A. The QoS is configured incorrectly.

B. A firewall is blocking the RTP ports.

C. Cisco Unified Communications Manager is configured to use G.711 instead of G.729.

D. 1 Gbps network ports are used instead of 100 Mbps network ports.

正确答案：C

问题 #12

An engineer configures a VoIP dial peer on a Cisco gateway. Which codec is used?

A. G.711ulaw

B. No codec is used (missing codec command).

C. G.711alaw

D. G.729r8

正确答案：C

问题 #13

Where is the default for Maximum Session Bit Rate for a region configured?

A. Service Parameter Configuration

B. Enterprise Phone Configuration

C. Enterprise Parameters Configuration

D. Region Configuration

正确答案：B

问题 #14

Which call flow matches traffic from a Mobile and Remote Access registered endpoint to central call control?

A. Endpoint > Expressway-E > Expressway-C > Cisco Unified CM

B. Endpoint > Expressway-E > Cisco Unified CM

C. Endpoint > Expressway-C > Cisco Unified CM

D. Endpoint > Expressway-C > Expressway-E > Cisco Unified CM

正确答案：CE

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