Cisco Certified Design Expert Qualification - 352-001 Exam Questions [2026]

QUESTION NO: 1
When designing a network that uses IPsec, which technique is suggested to avoid network fragmentation?

A. Reduce the MTU on the side closest to the client B. Reduce the MTU on the side closest to the server C. Reduce the MTU on both ends of the TCP connection D. Reduce the MTU only in the WAN

Correct Answer: C

QUESTION NO: 2
Which two foundational aspects of loT are still evolving and being worked on by the industry at large? (Choose two)

A. WiFi protocols B. Low energy Bluetooth sensors C. loT consortia D. Regulatory domains E. Standards

Correct Answer: A,B

QUESTION NO: 3
Which OSPF design consideration with regards to simplicity and address presentation must be considered when connecting two layer 3 switches directly using 10GBASE-T cabling and forming an OSPF neighbour adjacency?

A. The OSPF hello and dead timers must be tuned to detect failures as quickly as possible. B. Mesh groups must be included in the design C. The OSPF network type must be set to point-to-multipoint D. The OSPF network type must be set to point-to-point. E. An OSPF neighbor adjacency formed over loopback interfaces must be placed in Area 0

Correct Answer: A

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QUESTION NO: 4
Which fast convergence mechanism involves tunneling to a non-neighbor router?

A. LFA B. EIGRP FS C. Remote LFA D. BGP PIC

Correct Answer: C

QUESTION NO: 5
VPLS is implemented in a Layer 2 network with 2000 VLANs What is the primary concern to ensure successful deployment of VPLS?

A. VLAN scalability B. Flooding is necessary to propagate MAC address reachability information C. The underlying transport mechanism D. PE scalability

Correct Answer: D

QUESTION NO: 6
Which three IS-IS design considerations must be considered when connecting two Layer 3 switches directly using a 10 GBASE - T cabling and forming IS-IS neighbor adjacency? (Choose three)

A. A DlS is elected between the IS-IS neighbors and the elected DIS is pre-empted if a router with a higher system ID is connected B. The hello and dead timers must match for two IS-IS routers to become adjacent C. The area, levels, and interface MTU parameters must match, and system MTU must be unique foe two IS-IS routers to become adjacent D. The IS-IS hello and dead timers should be tuned to detect failures as quickly as possible E. Faster IS-IS hello and dead timers increase bandwidth and CPU use, and may cause instability F. A DIS is elected between the IS-IS neighbors and the elected DIS is preempted if a router with a tower system ID is connected G. The default IS-IS network type is port-to-point so a DIS is not elected

Correct Answer: A,B,E

QUESTION NO: 7
Drag and drop the natures of the network events from the left onto the OSPF-SPF calculation types on the right.

Correct Answer:

QUESTION NO: 8
A network design includes a long signaling delay in notifying the Layer 3 control plane that an interface has failed Which two of these actions would reduce that delay? (Choose two.)

A. Enable lower data link layer recovery systems to have an opportunity to restore the interface B. Reduce the time for the network to reconverge. C. Increase the notification of interface flaps. D. Increase network stability.

Correct Answer: A,B

QUESTION NO: 9
While reviewing an existing network design, you are discussing the characteristics of different STP versions. Which protocol minimizes unicast flooding during a Topology Change Notification in a Layer 2 switched network with many VLANs?

A. PVRSTP B. PVSTP+ C. STP D. MST

Correct Answer: A

QUESTION NO: 10
Which two benefits of using BFD for failure detection are true? (Choose two)

A. BFD can provide failure detection in less than one second B. BFD peers do not need to be adjacent C. BFD suppresses the routing protocol hellos D. BFD can be used with BGP, EIGRP, IS IS, and OSPF E. BFD has an auto-discovery mechanism F. BFD bypasses a failed peer, not needing to rely on the routing protocol

Correct Answer: A,D

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QUESTION NO: 11
You must change a network design to include link-state topology summarization. Which two effects of route summarization should you be concerned about? (Choose two)

A. Suboptimal routing B. Traffic black-holing C. Not scalable D. Slow convergence E. Packet reordering

Correct Answer: A,B

QUESTION NO: 12
Which solution prevents microloops from being formed during network convergence time?

A. Prefix suppression B. LFA C. RSVP-TE D. RLFA

Correct Answer: D

QUESTION NO: 13
Which MPLS TE design consideration is true?

A. MPLS TE requires Layer 3 VPN full-mesh topology deployment B. MPLS TE replaces LDP and the dependency of the IGP to identify the best path. C. MPLS TE optimizes the routing of IP traffic, given the constraints imposed by backbone capacity and application requirements. D. MPLS TE provides link and node protection

Correct Answer: C

QUESTION NO: 14
Which two reasons for implementing Cisco MPLS TE in service provider MPLS backbone are valid? (Choose two.)

A. When Cisco MPLS TE is required to route different MPLS QoS service classes through different paths B. When Cisco MPLS TE is required to create backup paths independently from the IGP C. When Cisco MPLS TE is required to reroute traffic within less than 1 second in case of a link failure inside the backbone D. When Cisco MPLS TE can detect and react to neighbor failures faster than IGPs can E. When Cisco MPLS TE is a prerequisite for implementing RSVP in the backbone

Correct Answer: A,C