Answers to Practice Exam
1.
B. Using TCP port 179, a BGP session is established.
2.
B. A stub area does not receive AS External Link Advertisements
(Type 5 LSAs).
3.
A, D. Confederations and route reflectors can both be configured to
avoid creating a full-mesh network where the neighbors command
is used excessively.
4.
B. EIGRP relies on multicasts to send queries and updates to other
EIGRP peers.
5.
A. The IOS command clear ip route * will clear dynamically
established routes from a router's routing table. When troubleshoot-
ing routing problems, this command can be useful in clearing route
tables immediately, instead of waiting for convergence processes to
complete. The other options are invalid syntax.
6.
A, B. BGP should be used when multi-homing is used or when you
are connecting more than one ISP to your network.
7.
D. Cisco uses 0.0.0.0 0.0.0.0 to represent a default route.
8.
D. The Access layer is responsible for breaking up collision domains.
9.
C. To show the status of a router's virtual links (links that span a
transit area in order to reach the backbone area), you can use the IOS
command show ip ospf virtual-links.
10.
B. The
redistribute static
command takes routes that have been
manually configured (static routes) and redistributes them into a spec-
ified dynamic routing protocol.
11.
B. Using
the
soft
syntax followed by the in and out syntaxes, you
can identify whether the clear ip bgp command is to affect inbound
or outbound triggered updates.
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