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Q101. Refer to the exhibit.
You are developing a migration plan to enable IPv6 in your IPv4 network. Starting at R3 and assuming default IS-IS operations, what is likely to happen when you enable IPv6 routing on the link from R3 to R2?
A. Only R3 and R2 have IPv4 and IPv6 reachability.
B. R2 receives an IPv6 default route from R3.
C. Loopback reachability between all routers for IPv4 is lost.
D. All routers except R2 are reachable through IPv4.
E. R3 advertises the link from R3-R2 to R1, R4 and R5 only.
Answer: C
Q102. You are designing a multisite VPN solution for a customer and you are concerned with the additional overhead of point-to-point tunnels and the associated overlay routing with DMVPN. How does a GDOI-based VPN eliminate the additional tunnel and routing overhead found in DMVPN?
A. The GDOI-based VPN requires overlaying a secondary routing infrastructure through the tunnels.
B. In a GDOI-based VPN, all group members share a common security association.
C. The GDOI-based VPN requires the provisioning of a complex connectivity mesh.
D. The GDOI-based VPN leverages the routing protocol to find its peer for tunnel setup.
Answer: B
Q103. You are designing a Group Encrypted Transport virtual private network solution for an existing branch network. The existing network has the following characteristics:
. 50 remote sites (with an additional 30 remote sites expected over the next 3 years) . Connectivity between all sites is via Multiprotocol Label Switching Layer 3 virtual private network service from a single provider . Open Shortest Path First is the routing protocol used between provider edge and customer edge routers . The customer edge routers will become group members performing the encryption between sites
Which additional routing protocol would you use for the overlay routing between the group members?
A. Open Shortest Path First (with a different process ID)
B. Enhanced Interior Gateway Routing Protocol
C. No additional protocol is necessary.
D. External Border Gateway Protocol
E. Routing Information Protocol Version 2
F. Next Hop Resolution Protocol
Answer: C
Q104. Refer to the exhibit.
Your junior design engineer presents this configuration design. What is the next-hop router for CE3, and why?
A. CE1. BGP weight is higher than CE2.
B. CE2. EBGP administrative distance is lower than RIP.
C. CE2. The link between CE2 and PE1 has more bandwidth than CE1-to-PE1.
D. CE1. HSRP on CE1 is in active state.
Answer: D
Q105. In an OSPF network, users in a particular OSPF non-backbone area are complaining about slow access speeds to a shared corporate resource in another OSPF area. Traceroutes show that theusers are taking a suboptimal default route to the destinations. Which solution will improve access speed?
A. Make the area totally stubby so that the default can be followed along the best path.
B. Create a virtual link between the areas so that traffic can shortcut directly between them.
C. Implement policy routing to channel the traffic in the optimal direction.
D. Leak specific summaries on the ABRs for the remote subnets in addition to the default.
Answer: D
Q106. Refer to the exhibit.
This Layer 2 ring has 10 VLANs with 1000 MAC addresses in each VLAN. Which protocol or mechanism provides the shortest traffic outage if the link marked with "X" fails?
A. PVRST
B. REP
C. MST
D. G.8031
E. BFD
Answer: B
Q107. You are the lead IP/MPLS network designer of a service provider called XYZ. You are leading a design discussion regarding IPv6 implementation in the XYZ MPLS network, using MPLS 6PE/6VPE techniques. Currently, XYZ provides IPv4 multicast services over an MPLS network by using MVPN, and would like to provide parallel IPv6 multicast services. Which three multicast solutions should be enabled? (Choose three.)
A. native IPv6, only for multicast services
B. MPLS 6PE/6VPE, because it provides IPv6 multicast support by default
C. an overlay model using Layer 2 MPLS tunnels
D. PIM-DM to enable IPv6 multicast in conjunction with MPLS 6PE/6VPE
E. MVPN for IPv6 multicast service
Answer: ACE
Q108. Which two OSPF design considerations should you implement to support the eventual growth of a network, so that CPU and memory are unaffected by the size and complexity of the link-state database in a large service provider network? (Choose two.)
A. Turn on route dampening.
B. Create network summaries.
C. Turn on the Incremental SPF feature.
D. Add more memory.
E. Turn on packet pacing.
F. Add redundancy between critical locations.
Answer: CE
Q109. Which design concern should be accounted for in all Layer 3 virtualization technologies?
A. Layer 3 redundancy
B. packet sizing
C. application usage
D. Layer 3 stability
Answer: B
Q110. A multicast network is using bidirectional PIM. Which two actions, when combined, can achieve high availability so that two RPs within the same network can act in a redundant manner? (Choose two.)
A. Use Anycast RP based on MSDP peering between the two RPs.
B. Use a phantom RP address.
C. Advertise routes for the two RPs with the same subnet mask through the unicast routing protocol.
D. Advertise routes for the two RPs with different subnet mask lengths through the unicast routing protocol.
E. Manipulate the administrative distance of the unicast routes to the two RPs.
F. Manipulate the multicast routing table by creating static mroutes to the two RPs.
Answer: BD