Q341. Independent, multiple OSPF processes are entered on the same router, and the processes have the same destination route. Which OSPF process is used?
A. The route with the fewest hops is used.
B. Both processes are used to load balance the traffic.
C. The first route process that places a route into the routing table is used.
D. The route with the shortest prefix is used.
Answer: C
Q342. Refer to the exhibit.
Two multicast domains are configured as shown and connected with MSDP, but the two
domains are unable to communicate. Which two actions can you take to correct the problem? (Choose two.)
A. Change the peering IP address in AS 65220 to 10.0.0.20.
B. Change the peering AS on R2 to 65210.
C. Verify that UDP port 639 is open.
D. Verify that TCP port 139 is open.
E. Change the MSDP originator-id to GigabitEthernet 0/0/0 on both routers.
F. Change the MSDP peering IP address on R2 to 172.16.1.13.
Answer: A,B
Q343. Refer to the exhibit.
A tunnel is configured between R3 to R4 sourced with their loopback interfaces. The ip pim sparse-dense mode command is configured on the tunnel interfaces and multicast-routing is enabled on R3 and R4. The IP backbone is not configured for multicast routing.
The RPF check has failed toward the multicast source.
Which two conditions could have caused the failure? (Choose two.)
A. The route back to the RP is through a different interface than tunnel 0.
B. The backbone devices can only route unicast traffic.
C. The route back to the RP is through the same tunnel interface.
D. A static route that points the RP to GigabitEthernet1/0 is configured.
Answer: A,D
Explanation:
.For a successful RPF verification of multicast traffic flowing over the shared tree (*,G) from RP, an ip mroute rp-address nexthop command needs to be configured for the RP address, that points to the tunnel interface.
A very similar scenario can be found at the reference link below:
Reference: http://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/43584-mcast-over-gre.html
Q344. Which three improvements does Cisco IOS XE Software offer over traditional IOS Software? (Choose three.)
A. It can run applications as separate processes on multicore CPUs.
B. It supports drivers for data plane ASICs outside of the operating system.
C. It allows platform-dependent code to be compiled into a single image.
D. It supports multiple IOS instances simultaneously, sharing resources and internal infrastructure for scalability.
E. It allows platform-independent code to be abstracted into a single microkernel for portability across platforms.
F. It uses a QNX Neutrino-based environment underneath the IOS Software.
Answer: A,B,C
Q345. Which technology is not necessary to set up a basic MPLS domain?
A. IP addressing
B. an IGP
C. LDP or TDP
D. CEF
E. a VRF
Answer: E
Explanation:
The simplest form of VRF implementation is VRF Lite. In this implementation, each router within the network participates in the virtual routing environment in a peer-based fashion. While simple to deploy and appropriate for small to medium enterprises and shared data centres, VRF Lite does not scale to the size required by global enterprises or large carriers, as there is the need to implement each VRF instance on every router, including intermediate routers. VRFs were initially introduced in combination with MPLS, but VRF proved to be so useful that it eventually evolved to live independent of MPLS. This is the historical explanation of the term VRF Lite. Usage of VRFs without MPLS.
Reference: http://en.wikipedia.org/wiki/Virtual_routing_and_forwarding
Q346. What are two reasons to use the ip ospf database filter all out command? (Choose two.)
A. to maintain a centralized OSPF database on a single master device
B. to avoid flooding LSAs on low-speed links
C. to ensure a consistent OSPF database across the network
D. to selectively filter OSPF routes without disrupting the SPF algorithm
E. to filter only type 7 LSAs from an OSPF area
F. to enable OSPF to send triggered updates
Answer: A,B
Q347. Refer to the exhibit.
Which AS paths are matched by this access list?
A. the origin AS 64496 only
B. the origin AS 64496 and any ASs after AS 64496
C. the directly attached AS 64496 and any ASs directly attached to AS 64496
D. the directly attached AS 64496 and any longer AS paths
Answer: C
Explanation:
If you want AS 1 to get networks originated from AS 4 and all directly attached ASs of AS 4, apply the following inbound filter on Router 1. ip as-path access-list 1 permit ^4_[0-9]*$ router bgp 1 neighbor 4.4.4.4 remote-as 4 neighbor 4.4.4.4 route-map foo in route-map foo permit 10 match as-path 1 In the ip as-path access-list command, the carat (^) starts the input string and designates "AS". The underscore (_) means there is a a null string in the string that follows "AS 4". The [0-9]* specifies that any connected AS with a valid AS number can pass the filter. The advantage of using the [0-9]* syntax is that it gives you the flexibility to add any number of ASs without modifying this command string.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13754-26.html
Q348. Which statement about the VLAN database is true?
A. Manually deleting the vlan.dat file can cause inconsistency in the database.
B. Private VLAN information is stored in the database.
C. VLAN configurations 1 through 4096 are stored in the vlan.dat file.
D. The VLAN database is used only if the VTP domain name in the VLAN database matches the VTP domain name in the startup-config file.
Answer: A
Q349. Which BGP feature allows a router to maintain its current BGP configuration while it advertises a different AS number to new connections?
A. local-AS
B. next-hop-self
C. allow-AS in
D. soft reset
Answer: A
Explanation:
The local-AS feature allows a router to appear to be a member of a second autonomous system (AS), in addition to its real AS. This feature can only be used for true eBGP peers. The local-AS feature is useful if ISP-A purchases ISP-B, but ISP-B's customers do not want to modify any peering arrangements or configurations. The local-AS feature allows routers in ISP-B to become members of ISP-A's AS. At the same time, these routers appear to their customers to retain their ISP-B AS number.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/border-gateway-protocol-bgp/13761-39.html
Q350. Which two options are requirements to implement 6VPE? (Choose two.)
A. MPLS between PEs
B. 6-in-4 tunnels between PEs
C. MP-BGP VPNv6 exchange
D. MP-BGP IPv6+label exchange
E. Any Transport over MPLS
F. IPv4/IPv6 dual-stack in core
Answer: A,C