400-007 Free Practice Test

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

1. A. When occasional flaps of long duration occur
2. B. when numerous adjacent flaps of very short duration occur
3. C. when the router hardware it slower than the carrier delay down detection
4. D. when the switch hardware is faster than the debounce timer down detection

Correct Answer: B

Which two characteristics are associated with 802 1s? (Choose two)

1. A. 802.1s supports up to 1024 instances of 802.1
2. B. 802.1 s is a Cisco enhancement to 802.1w.
3. C. 802.1s provides for faster convergence over 802 1D and PVST+.
4. D. CPU and memory requirements are the highest of all spanning-tree STP implementations.
5. E. 802.1s maps multiple VLANs to the same spanning-tree instance

Correct Answer: CE

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

1. A. It can limit network scalability
2. B. It can create microloops during reconvergence
3. C. It increases convergence time.
4. D. It reduces convergence time.

Correct Answer: B

Company XYZ has 30 sites using MPLS L3 VPN and the company is now concerned about data integrity. The company wants to redesign the security aspect of their network based on these requirements:
• Securely transfer the corporate data over the private WAN
• Use a centralized configuration model.
• Minimize overhead on the tunneled traffic.
Which technology can be used in the new design to meet the company's requirements?

1. A. S-VTI
2. B. DMVPN
3. C. MGRE
4. D. GET VPN

Correct Answer: D

Which actions are performed at the distribution layer of the three-layer hierarchical network design model? (Choose two)

1. A. Fast transport
2. B. Reliability
3. C. QoS classification and marking boundary
4. D. Fault isolation
5. E. Redundancy and load balancing

Correct Answer: DE