Answers to Assessment Test
A, D. EIGRP and OSPF both use a topology table to help maintain a
loop-free network. See Chapter 2 for more information on the use of
show ip bgp status
command displays the status of all BGP
connections. The show ip bgp summary command displays the
BGP configuration. The other two commands are not valid. For more
information, see Chapter 8.
A. Directly connected routes have an administrative distance of zero.
See Chapter 2 for more information on administrative distances.
C. A leading bit pattern of 0 indicates a Class A network. A leading
bit pattern of 10 indicates a Class B network. A leading bit pattern of
110 indicates a Class C network. For more information, see Chapter 3.
F. An internetwork should be reliable, responsive, efficient, adapt-
able, and accessible. See Chapter 1 for more information on scalable
A, B, C, D. There is no such item as a re-distribution list using BGP.
The others listed are all valid ways of manipulating routes advertised
by BGP. For more information, see Chapter 9.
B. When configuring an area as totally stubby, we are stopping sum-
mary Link State Advertisements from being injected into the area.
Therefore, the IOS router configuration command area area-id
only needs to be issued on the area border routers
(ABRs). However, all of the other routers within the area need to be
configured as stubby. Typically, an area will have only one ABR. For
more information, see Chapter 5.
C. The formula 2
2 = number of hosts (where n is the number of
host bits in the subnet mask) tells us how many hosts can be supported
for a particular subnet. For more information, see Chapter 3.
clear ip bgp *
command is used to clear all the entries in
the BGP table. For more information, see Chapter 8.
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