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Answers to Assessment Test

35.

B. The highest IP address is used if no loopback interfaces are con-
figured. See Chapter 4 for more information.

36.

B. This connection is in the Connection state until a message is sent
to identify each peer. When the connection is established, it transitions
to the Open state. Once the connection is accepted by the other peer,
the connection transitions to Established state. If the connection is
lost, possibly due to a version mismatch, the peer goes to the Active
state and actively tries to reestablish the connection using the proper
version properties. For more information, see Chapter 7.

37.

D. AllOSPFRouters does not exist. See Chapter 4 for more
information.

38.

B. Not-so-stubby areas (NSSAs) import external routes (Type 7 Link
State Advertisements) via route redistribution and then translate these
Type 7 LSAs into Type 5 LSAs. For more information, see Chapter 5.

39.

D. Passive interfaces are used for such interfaces as BRI, where you
do not want to have routing updates sent out the interface. See Chap-
ter 6 for more information.

40.

D. A BGP session is established between two routers by using a TCP
SYN, TCP ACK, and then another TCP SYN. For more information,
see Chapter 7.

41.

D. The neighbor table tracks all the directly connected routers run-
ning EIGRP. The table also tracks the smooth round-trip timer
(SRTT), the retransmission timer (RTO), and the hold timer, which
are all used by the neighbor table to track its neighboring routers. See
Chapter 6 for more information.

42.

D. The Internet Assigned Numbers Authority (IANA) is responsible
for delegating autonomous system numbers. Other organizations may
assign numbers, but only if they are authorized by the IANA. See
Chapter 7 for more information.

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