2026 Cisco CCDE 400-007历年真题与考试题库解析｜最新CCDE设计考试备考资料

You want to mitigate failures that are caused by STP loops that occur before UDLD detects the failure or that are caused by a device that is no longer sending BPDUs. Which mechanism do you use along with UDLD?

Organizations that embrace Zero Trust initiatives ranging from business policies to technology infrastructure can reap business and security benefits. Which two domains should be covered under Zero Trust initiatives? (Choose two.)

Company XYZ is redesigning their QoS policy. Some of the applications used by the company are real-time applications. The QoS design must give these applications preference in terms of transmission. Which QoS strategy can be used to fulfill the requiremen

Company XYZ, a global content provider, owns data centers on different continents. Their data center design involves a standard three-layer design with a Layer 3-only core. HSRP is used as the FHRP. They require VLAN extension across access switches in al

Which three items do you recommend for control plane hardening of an infrastructure device? (Choose three.)

Company XYZ wants to use the FCAPS ISO standard for network management design. The focus of the design should be to monitor and keep track of any performance issues by continuously collecting and analyzing statistical information to monitor, correct, and

SD-WAN can be used to provide secure connectivity to remote offices, branch offices, campus networks, data centers, and the cloud over any type of IP-based underlay transport network. Which two statements describe SD-WAN solutions? (Choose two.)

Which best practice ensures data security in the private cloud?

Which two conditions must be met for EIGRP to maintain an alternate loop-free path to a remote network? (Choose two.)

A European government passport agency considers upgrading its IT systems to increase performance and workload flexibility in response to constantly changing requirements. The budget manager wants to reduce capital expenses and IT staff and must adopt the

Which two control plane policer designs must be considered to achieve high availability? (Choose two.)

Which two application requirements are mandatory for traffic to receive proper treatment when placed in the priority queue? (Choose two.)

Company XYZ wants to improve the security design of their network to include protection from reconnaissance and DoS attacks on their subinterfaces destined toward next hop routers. Which technology can be used to prevent these types of attacks?

An architect designs a multi-controller network architecture with these requirements: Achieve fast failover to control traffic when controllers fail. Yield a short distance and high resiliency in the connection between the switches and the controller. Red

A healthcare customer requested that SNMP traps must be sent over the MPLS Layer 3 VPN service. Which protocol must be enabled?

How must the queue sizes be designed to ensure that an application functions correctly?

In an OSPF network with routers connected together with Ethernet cabling, which topology typically takes the longest to converge?

A multicast network is using Bidirectional PIM. Which two combined actions achieve high availability so that two RPRs within the same network can act in a redundant manner? (Choose two.)

Company XYZ has 30 sites running a legacy private WAN architecture that connects to the Internet via multiple high-speed connections. The company is now redesigning their network and must comply with these design requirements: Use a private WAN strategy t

A small organization of 20 employees is looking to deliver a network design service for modernizing customer networks to support advanced solutions. Project scope and weekly progress should be visualized by the management. Always consider feedback and mak

IPFIX data collection via standalone IPFIX probes is an alternative to flow collection from routers and switches. Which use case is suitable for using IPFIX probes?

Company XYZ needs advice in redesigning their legacy Layer 2 infrastructure. Which technology should be included in the design to minimize or avoid convergence delays due to STP or FHRP and provide a loop-free topology?

SDWAN networks capitalize the usage of broadband Internet links over traditional MPLS links to offer more cost benefits to enterprise customers. However, due to the insecure nature of the public Internet it is mandatory to use encryption of traffic betwee

Which interconnectivity method offers the fastest convergence in the event of a unidirectional issue between three layer 3 switches connected together with routed links in the same rack in a data center?

The Company XYZ network is experiencing attacks against their router. Which type of Control Plane Protection must be used on the router to protect all control plane IP traffic that is destined directly for one of the router interfaces?

What is a characteristic of a secure cloud architecture model?

A BGP route reflector in the network is taking longer than expected to converge during large network changes. Troubleshooting shows that the router cannot handle all the TCP acknowledgements during route updates. Which action can be performed to tune the

Which three elements help network designers to construct secure systems that protect information and resources (such as devices, communication, and data) from unauthorized access, modification, inspection, or destruction? (Choose three.)

How can EIGRP topologies be designed to converge as fast as possible in the event of a point-to-point link failure?

Which undesired effect of increasing the jitter compensation buffer is true?

Which optimal use of interface dampening on a fast convergence network design is true?

Which two mechanisms avoid suboptimal routing in a network with dynamic mutual redistribution between multiple OSPFv2 and EIGRP boundaries? (Choose two.)

Company XYZ is in the process of identifying which transport mechanism(s) to use as their WAN technology. Their main two requirements are 1.a technology that could offer DPI, SLA, secure tunnels, privacy, QoS, scalability, reliability, and ease of managem

What is the most important operational driver in building a resilient and secure modular network design?

Which two actions ensure voice quality in a branch location with a low-speed, high-latency WAN connection? (Choose two.)

Which three tools are used for ongoing monitoring and maintenance of a voice and video environment? (Choose three.)

Which two features control multicast traffic in a VLAN environment? (Choose two.)

According to the CIA triad principles for network security design, which principle should be priority for a Zero Trust network?

Which relationship between iBGP and the underlying physical topology is true?

Company XYZ is running a redundant private WAN network using OSPF as the underlay protocol. The current design accommodates for redundancy in the network, but it is taking over 30 seconds for the network to reconverge upon failure. Which technique can be

What are two primary design constraints when a robust infrastructure solution is created? (Choose two.)

Which architecture does not require an explicit multicast signaling protocol such as PIM or P2MP, to signal the multicast state hop-by-hop, but instead uses a link state protocol to advertise the multicast forwarding state?

Which two points must network designers consider when designing a new network design or when evaluating an existing network design to help them understand the high-level design direction with regards to the security aspects? (Choose two.)

An enterprise network has two core routers that connect to 200 distribution routers and uses full-mesh iBGP peering between these routers as routing method. The distribution routers are experiencing high CPU utilization due to the BGP process. Which desig

Which function is performed at the access layer of the three-layer hierarchical network design model?

What are two common approaches to analyzing and designing networks? (Choose two.)

Company XYZ network runs IPv4 and IPv6 and they want to introduce a multidomain, multicast-based network. The new design should use flavor of PIM that forwards traffic using SPT. Which technology meets this requirement?

Company XYZ is planning to deploy primary and secondary (disaster recovery) data center sites. Each of these sites will have redundant SAN fabrics and data protection is expected between the data center sites. The sites are 100 miles (160 km) apart and ta

An enterprise requires MPLS connected branches to access cloud-based Microsoft 365 services over an SD-WAN solution. Internet access is available only at dual regional hub sites that are connected to the MPLS network. Which connectivity method provides an

Company XYZ has implemented policy-based routing in their network. Which potential problem must be kept in mind about network reconvergence and PBR?

Company XYZ wants to secure the data plane of their network. Which two technologies can be included in the security design? (Choose two.)

As part of workspace digitization, a large enterprise has migrated all their users to Desktop as a Service (DaaS), by hosting the backend system in their on-premises data center. Some of the branches have started to experience disconnections to the DaaS a

What are two examples of business goals to be considered when a network design is built? (Choose two.)

A European national bank considers migrating its on-premises systems to a private cloud offering in a non-European location to significantly reduce IT costs. What is a primary factor prior to migration?

A healthcare provider discovers that protected health information of patients was altered without patient consent. The healthcare provider is subject to HIPAA compliance and is required to protect PHI data. Which type of security safeguard should be imple

Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services is true?

Which BGP feature provides fast convergence?

You have been asked to design a high-density wireless network for a university campus. Which two principles would you apply in order to maximize the wireless network capacity? (Choose two.)