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Q21. Customers connecting to a Service Provider for Internet access are intending to implement redundant peering. The design requirements call for preferring a primary link for both ingress and egress traffic. Secondary links should be used only during primary outages. What two BGP deployment options will accomplish this design goal? (Choose two.)
A. On the router handling the secondary link, advertise routes with a MED value of 0.
B. On the router handling the primary link, set the weight for all incoming routes to be a value of 0.
C. On the router handling the secondary link, advertise all routes with a longer AS-PATH value.
D. On the router handling the primary link, advertise all routes with a longer AS-PATH value.
E. On the router handling the secondary link, set the local preference for all incoming routes to be a value of 0.
Answer: C,E
Q22. Refer to the exhibit. A customer is running IS-IS within a network and is using BGP as a CE-PE routing protocol. Which action allows CE1 to get the subnet 10.10.2.0/24 over the CE1-PE1 link, regardless of whether there is a flap in the MPLS link or backdoor link?
A. Configure the neighbor <PE1-IP>weight 33768 command on CE1 under the BGP process.
B. Configure the distance bgp 115 200 200 command on CE1 under the BGP process.
C. Configure the distance 30 ip command on CE1 under the IS-IS process.
D. Configure the distance bgp 115 200 200 command on CE2 under the BGP process.
E. Configure the neighbor <PE1-IP>weight 33768 command on CE2 under the BGP process.
Answer: B
Q23. Refer to the exhibit. Why is R3 unable to install 1.1.1.1/32 in its routing table?
A. 11.11.11.11/32 exists in the routing table, so the conditional advertising is not working.
B. The route is filtered out by the ip prefix-list ROUTE-IN command.
C. 11.11.11.11/32 is advertising in the BGP table, so conditional advertising is not working.
D. The bgp redistribute-internal command is missing under the R2 BGP process.
Answer: B
Q24. Which MPLS technology will achieve LAN extensions over the service provider backbone?
A. AToM
B. VPLS
C. L2VPN
D. L2TPv3
Answer: B
Explanation: https://tools.ietf.org/html/rfc7041
Q25. Refer to the exhibit. An SP core is running MPLS with OSPF as the IGP used for Loopback propagation. LDP Synchronization is enabled per the given configuration. What will the traffic flow behavior be after a temporary outage event on PE1 Eth0/0?
A. Permanently through PE1 -> P2 -> PE4 due to lowest path metric.
B. Initially through PE1 -> P1 -> PE4, then a few seconds later, it will be over PE1 -> P2 -> PE4.
C. Permanently through PE1 -> P1 -> PE4 due to lowest path metric.
D. Initially through PE1 -> P2 -> PE4, then a few seconds later, it will be over PE1 -> P1 -> PE4
Answer: B
Q26. Refer to the exhibit.
ISP-X customers must be able to reach both ISP-Y and ISP-Z, but ISP-X must not allow transit traffic between ISP-Y and ISP-Z at any time Which two options satisfy this requirement? (Choose two.)
A. Use the MED to prefer the proper routes
B. Use communities to identify and filter routes.
C. Use local preference to prefer the routes
D. Use a route map to filter routes on the AS number.
E. Use the atomic aggregate attribute
Answer: B,D
Q27. Which are the three characteristics of SDR? (Choose three)
A. The logical router can span across chassis.
B. Each logical router has a distinct fabric and system controller module.
C. Owner SDR can be reloaded, without affecting all non-SDRs.
D. The logical router has dedicated route processor.
E. The logical router can share line cards.
F. The fabric and system controller module are shared by all logical routers.
Answer: A,D,F
Q28. What are three main characteristics of mLDP that differ from RSVP-TE? (Choose three.)
A. The LSPs are built from tailend to headend.
B. The LSPs are built from headend to tailend.
C. It supports only P2MP LSPs.
D. It supports both P2MP and MP2MP LSPs.
E. Signaling is periodic.
F. No periodic signaling is performed.
Answer: A,D,F
Explanation: http://www.cisco.com/c/dam/en/us/products/ios-nx-os-software/multicast-label-distribution-protocol-mldp/whitepaper_c11-598929_v1.pdf
Q29. A network engineer wants to deploy a solution that allows for 200 DS1 s and 100 DS0s that are multiplexed to a single interface on a Cisco 7600 Series Router. Which interface type satisfies this requirement?
A. Channelized T3/E3 (DS0)
B. Channelized OC-12/STM-4
C. OC-12/STM-4
D. OC-48c/STM-16
Answer: B
Q30. Refer to the exhibit.
The NOC engineer noticed that the R2 router system clock is not updated and synchronized to the NTP server that is configured on the R10 router. What is the issue?
A. The access list NTP_Clients is missing.
B. The access group is misconfigured.
C. The maximum number of peers and client associations is exceeded.
D. The authentication key is mismatched.
E. The PE2 router should be configured as an NTP peer instead of as a client.
Answer: C