2-7 - Summary Challenge Flashcards
Match the OSPF area types with the best description.
Descriptions:
Typically carries all of the routing information.
Directly connected to Area 0.
Do not originate or receive any external routes.
Can originate external routes, but do not receive them from other OSPF areas.
Area Types:
regular areas
backbone areas
stubby areas
NSSAs
Typically carries all of the routing information. == backbone area
Directly connected to Area 0. == regular areas
Do not originate or receive any external routes. == stubby areas
Can originate external routes, but do not receive them from other OSPF areas. == NSSAs
Which of the following statements is true about IS-IS?
A. IS-IS does not support IPv6.
B. IS-IS tags CLNP routes with information about IP networks and subnets.
C. IS-IS areas connect to a common backbone area.
D. IS-IS implementation is impossible with one area.
B
Which of the following statements is true about FEC?
A. It is a group of packets that forward along the same path and get the same treatment.
B. It is a sequence of LSRs that forward labeled packets.
C. It is created for each entry that is found in the main routing table.
D. It propagates labels for the shortest path through the network.
A
Which of the following statements is true about LDP?
A. Each intermediate LDP swaps the top label in a packet that traverses the LSP.
B. It is a group of packets that forward along the same path and get the same treatment.
C. An LDP is created for each entry that is found in the main routing table.
D. It advertises labels for all the prefixes to all its neighbors.
D
Match the following BGP neighbor state with the best description.
Descriptions:
The router searches the routing table to see whether a route exists.
A route was found to the neighbor and finished the three-way TCP handshake.
The router goes into this state if there is no response for five seconds.
Peering completes and routing begins.
Neighbor States:
idle
active
established
connect
The router searches the routing table to see whether a route exists. == idle
A route was found to the neighbor and finished the three-way TCP handshake. == connect
The router goes into this state if there is no response for five seconds. == active
Peering completes and routing begins. == established
Which of the following statements is true about BGP?
A. BGP sessions within an autonomous system are called EBGP sessions.
B. EBGP sessions can be several hops away.
C. Each administrative domain is identified with a unique AS number.
D. For IBGP sessions, routers check if neighbors have a directly connected address.
C
Which of the following statements is true about route summarization?
A. You must choose an LSP before associating the FEC.
B. Use special MPLS LSP ping and traceroute to identify LSP breakages.
C. MPLS ping and traceroute use TCP packets with loopback destination addresses.
D. Normal ICMP ping and traceroute help detect LSP failures.
B
