Q121. Refer to the exhibit.
How would you adjust the design to improve convergence on the network?
A. Add an intra-POP link between routers 1A and 1B, and enable IP LFA FRR.
B. Use an IP SLA between the end stations to detect path failures.
C. Enable SSO-NSF on routers 1A and 1B.
D. Use BGP to connect the sites over the WAN.
Answer: A
Q122. A senior network designer suggests that you should improve network convergence times by reducing BGP timers between your CE router and the PE router of the service provider. Which three factors should you to consider when you adjust the timer values? (Choose three.)
A. access bandwidth
B. service provider agreement to support tuned timers
C. number of routes on the CE router
D. number of VRFs on the PE router
E. service provider scheduling of changes to the PE
Answer: ABC
Q123. You have been tasked to create a Layer 2 network design that uses vPC to provide resiliency and avoid loops. vPC removes Layer 2 loops while providing redundancy through which mechanism?
A. dual-active detection
B. address synchronization
C. strict forwarding rules
D. Bridge Assurance
Answer: C
Q124. When designing a large full mesh network running OSPF, how would you reduce LSA repetition?
A. Elect a DR and BDR.
B. Use access control lists to control outbound advertisements.
C. Choose one or two routers to re-flood LSA information.
D. Put each of the point-to-point links in your full mesh networking into a separate area.
Answer: C
Q125. The Service Provider you work for wants to deploy CoS functionality on the P routers of the MPLS core, to provide a complete CoS solution to all customers that purchase services such as dedicated Internet access, MPLS Layer 3 VPN, and Layer 2 VPN (pseudowire). The design requirements are:
. The network supports four service queues with equal treatment for delay, jitter,
and packet loss.
. Queues are numbered 0–3, where 0 is the default queue.
. Three queues have one treatment, whereas the other queue has either one or two
treatments.
. The Service Provider manages control traffic, whereas the customers manage
business critical and best effort.
Which two statements could you recommend to allow for the appropriate level of bandwidth allocation? (Choose two.)
A. Control plane 10%, Real Time 30%, Business Critical 40%, Best Effort 20%
B. Control plane 80%. Real Time 10%, Business Critical 5%, Best Effort 5%
C. Control plane 90%, Real Time 5%, Business Critical 5%, Best Effort 0%
D. Control plane 20%, Real Time 40%, Business Critical 30%, Best Effort 10%
Answer: AD
Q126. You are using iSCSI to transfer files between a 10 Gigabit Ethernet storage system and a 1 Gigabit Ethernet server. The performance is only approximately 700 Mb/s and output drops are occurring on the server switch port. Which action will improve performance in a cost-effective manner?
A. Use a WRED random drop policy.
B. Increase the queue to at least 1 GB.
C. Enable the TCP Nagle algorithm on the receiver.
D. Change the protocol to CIFS.
Answer: A
Q127. You are working on a network design plan for a company with approximately 2000 sites. The sites will be connected using the public Internet. You plan to use private IP addressing in the network design, which will be routed without NAT through an encrypted WAN network. Some sites will be connected to the Internet with dynamic public IP addresses, and these addresses may change occasionally. Which VPN solution will support these design requirements?
A. GET VPN must be used, because DMVPN does not scale to 2000 sites.
B. DMVPN must be used, because GET VPN does not scale to 2000 sites.
C. GET VPN must be used, because private IP addresses cannot be transferred with DMVPN through the public Internet.
D. DMVPN must be used, because private IP addresses cannot be transferred with GET VPN through the public Internet.
E. GET VPN must be used, because DMVPN does not support dynamic IP addresses for some sites.
F. DMVPN must be used, because GET VPN does not support dynamic IP addresses for some sites.
Answer: D
Q128. Which two features can be used to extend VRFs across a campus? (Choose two.)
A. 802.1q trunks
B. LDP
C. MPLS TE
D. GRE
E. port channels
Answer: AD
Q129. When creating a network design that routes an IGP over L2VPNs, with which device does the remote CE router form an IGP adjacency?
A. the hub site PE router
B. the hub site CE router
C. the directly connected PE router
D. The IGP will not establish adjacency over the MPLS network.
Answer: B
Q130. An IBGP mesh design is being scoped, and in the discussions, one of the design engineers proposes the use of route reflectors. Which limitation is valid when using route reflectors in this design?
A. The configuration complexity on the routers will be increased.
B. Route reflectors will limit the total number of routes in the topology.
C. Multipath information is difficult to propagate in a route reflector topology.
D. Route reflectors will cause an opportunity to create routing loops.
Answer: C