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Q301. Which three statements describe the characteristics of a VPLS architecture? (Choose three.)
A. It forwards Ethernet frames.
B. It maps MAC address destinations to IP next hops.
C. It supports MAC address aging.
D. It replicates broadcast and multicast frames to multiple ports.
E. It conveys MAC address reachability information in a separate control protocol.
F. It can suppress the flooding of traffic.
Answer: A,C,D
Explanation:
As a VPLS forwards Ethernet frames at Layer 2, the operation of VPLS is exactly the same as that found within IEEE 802.1 bridges in that VPLS will self learn source MAC address to port associations, and frames are forwarded based upon the destination MAC address. Like other 802.1 bridges, MAC address aging is supported.
Reference: http://www.cisco.com/en/US/products/hw/routers/ps368/products_white_paper09186a0080 1f6084.shtml
Q302. What happens when an interface is configured as passive in OSPF?
A. No OSPF neighbor ship is formed on the interface.
B. An OSPF neighbor ship is formed with the DR, but not with the BDR.
C. The subnet configured on the interface is not advertised to any other neighbor.
D. OSPF hello messages are sent as unicast instead of multicast.
Answer: A
Q303. Which two commands enable OSPF graceful shutdown? (Choose two.)
A. nsf cisco
B. ip ospf shutdown
C. shutdown
D. nsf ietf helper disable
Answer: B,C
Q304. When you implement PfR, which IP SLA probe is used to determine the MOS?
A. jitter
B. latency
C. packet loss
D. throughput
Answer: A
Q305. How does EIGRP derive the metric for manual summary routes?
A. It uses the best composite metric of any component route in the topology table.
B. It uses the worst composite metric of any component route in the topology table.
C. It uses the best metric vectors of all component routes in the topology table.
D. It uses the worst metric vectors of all component routes in the topology table.
Answer: A
Explanation:
For example if your router has a routing table like this:
D 192.168.8.0/24 [90/2632528] via 192.168.0.1, 00:00:12, Serial0/0
D 192.168.9.0/24 [90/2323456] via 192.168.0.1, 00:00:12, Serial0/0
D 192.168.10.0/24 [90/2195456] via 192.168.0.1, 00:00:12, Serial0/0
D 192.168.11.0/24 [90/2323456] via 192.168.0.1, 00:00:12, Serial0/0
Now suppose you want to manually summarize all the routes above, you can use this command (on the router that advertised these routes to our router):
Router(config-if)#ip summary-address eigrp 1 192.168.8.0 255.255.248.0
After that the routing table of your router will look like this:
D 192.168.8.0/21 [90/2195456] via 192.168.0.1, 00:01:42, Serial0/0
And we can see the manual summary route takes the smallest metric of the specific routes.
Q306. Which three fields are part of a TCN BPDU? (Choose three.)
A. protocol ID
B. version
C. type
D. max-age
E. flags
F. message age
Answer: A,B,C
Q307. Refer to the exhibit.
Which three statements about the R1 configuration are true? (Choose three.)
A. The virtual circuit identifier is 1611 and the virtual circuit is down.
B. The local label for the circuit is 4006.
C. The targeted LDP session to the remote peer is up.
D. The local label for the circuit is 1611.
E. The virtual circuit identifier is 4006 and the virtual circuit is down.
F. The circuit is using MPLS VC type 4.
Answer: A,B,C
Explanation:
The number after the vc is the identifier, which is 1611 in this case. Here, the VC status is shown as down.
As shown, the MPLS VC labels: local 4006, remote unassigned shows the local label used is 4006.
The targeted LDP session is up as verified by the “Signalling protocol: LDP, peer 172.16.12.70 up” statement in the output.
Q308. Refer to the exhibit.
Which three statements about the device with this configuration are true? (Choose three.)
A. Multiple AFIs are configured on the device.
B. The authentication on 172.16.129.7 is configured incorrectly.
C. The device is configured to support MPLS VPNs.
D. This device is configured with a single AFI.
E. The authentication on 172.16.129.4 is configured incorrectly.
F. The device is configured to support L2VPNs.
Answer: A,B,C
Q309. Which topology allows the split-horizon rule to be safely disabled when using EIGRP?
A. full mesh
B. partial mesh
C. hub and spoke
D. ring
Answer: C
Q310. Which two statements about the OSPF two-way neighbor state are true? (Choose two.)
A. Each neighbor receives its own router ID in a hello packet from the other neighbor.
B. Each neighbor receives a hello message from the other neighbor.
C. It is valid only on NBMA networks.
D. It is valid only on point-to-point networks.
E. Each neighbor receives an acknowledgement of its own hello packet from the other neighbor.
F. Each neighbor receives the router ID of the other neighbor in a hello packet from the other neighbor.
Answer: A,E
