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Cisco Certified Design Expert CCDE v3.0 Questions 111–115 (page: 24)

Updated On: 10-Feb-2026

Company XYZ wants design recommendations for Layer 2 redundancy (using Layer 2 technologies). The company wants to prioritize flexibility and scalability elements in the new design. Which two technologies help meet these requirements? (Choose two.)

  1. Configure DHCP snooping on the switches
  2. Use switch clustering at the distribution layer where possible
  3. Use Unidirectional Link Detection
  4. Avoid stretching VLANs across switches
  5. Use root guard

Answer(s): B,E



Which action must be taken before new VoIP systems are implemented on a network to ensure that the network is ready to handle the traffic?

  1. Evaluate bandwidth utilization and connection quality
  2. Enable special requirements such as direct DID lines on pickup
  3. Make recommendations to limit the size of the half-open session table on routers
  4. Check if anomaly detection is enabled for SIP and H.323 on Layer 3 devices

Answer(s): A

Explanation:

VoIP traffic is different from other types of traffic, such as web traffic or email traffic. VoIP traffic is sensitive to latency and jitter, so it is important to evaluate the bandwidth utilization and connection quality of the network before new VoIP systems are implemented.

The other options are not as important as evaluating bandwidth utilization and connection quality. Option B, enabling special requirements such as direct DID lines on pickup, is not necessary to ensure that the network is ready to handle VoIP traffic. Option C, making recommendations to limit the size of the half-open session table on routers, is only necessary if the network is already experiencing high levels of VoIP traffic. Option D, checking if anomaly detection is enabled for SIP and H.323 on Layer 3 devices, is a good practice, but it is not as important as evaluating bandwidth utilization and connection quality.



DRAG DROP (Drag and Drop is not supported)
Drag and drop the characteristics from the left onto the corresponding network management options on the right.

  1. See Explanation section for answer.

Answer(s): A

Explanation:





Refer to the exhibit. This network is running EIGRP as the routing protocol and the internal networks are being advertised in EIGRP. Based on the link speeds, all traffic between London and Rome is getting propagated via Barcelona and the direct link between London and Rome is not being utilized under normal working circumstances. The EIGRP design should allow for efficiency in the routing table by minimizing the routes being exchanged. The link between London and Rome should be utilized for specific routes. Which two steps accomplish this task? (Choose two.)

  1. Configure EIGRP route summarization on all the interfaces to summarize the internal LAN routes
  2. Filter the routes on the link between London and Barcelona
  3. Filter the routes on the link between London and Rome
  4. Configure route leaking of summary routes on the link between London and Rome

Answer(s): A,D



What are two top cloud-native security challenges faced by today’s cloud-oriented organizations? (Choose two.)

  1. polymorphism
  2. lack of visibility and tracking
  3. establishing user roles
  4. increased attack surface
  5. user credential validation

Answer(s): B,D

Explanation:

-Increased attack surface: Cloud-native applications are often more complex and distributed than traditional applications, which means that they have a larger attack surface. This makes them more vulnerable to attack.
-Lack of visibility and tracking: It can be difficult to get visibility into cloud-native applications, which makes it difficult to track and monitor them for security threats. This can make it difficult to detect and respond to attacks.
The other options are also security challenges faced by cloud-oriented organizations, but they are not as top as the two mentioned above.

-Polymorphism is a technique used by attackers to evade security measures by changing the appearance of their malware. This can make it difficult to detect and block malware that uses polymorphism.
-Establishing user roles is a security best practice that helps to ensure that users have the appropriate level of access to resources. However, it can be difficult to implement and manage user roles in cloud-native environments.
-User credential validation is important for ensuring that users are who they say they are. However, it can be difficult to implement and manage user credential validation in cloud-native environments.
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