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Answers to Review Questions
49
9.
C, D. The distribution layer performs routing, which breaks up
broadcast domains. Routers can be configured with access lists,
packet filters, and queuing.
10.
A, B, C. The distribution layer performs routing, which breaks up
broadcast domains by default. Security can be performed as well as
network policies implemented. Routing protocols can be redistributed
with most Cisco routers.
11.
A, B. The access layer breaks up collision domains and connects the
access layer to the internetwork by connecting to the distribution
layer.
12.
A, B, C, D. Any switches from the 1900 series to the 5000 series can
work at the access layer. The 5000 and above are used at the distribu-
tion layer and the core layer.
13.
B. The Cisco 4000 series was created for high performance, up to
36 gigabit ports, and 96-user connectivity.
14.
B. The 1900 is fixed 10 or 100Mbps ports and cannot handle gigabit
speeds. The 2900 is the lowest model to handle gigabit speeds for up
to 50 users maximum.
15.
A. The 1900 is a low-end model that provides 10Mbps switched net-
working with up to 24 ports.
16.
A. The Data Link layer (layer 2) encapsulates the packet but does not
make any changes to it.
17.
B, C, E. Layer 2 switching is considered hardware based because it
uses an ASIC chip to make filtering decisions. It is also considered wire
speed because no modification to the data packet takes place.
18.
D. The Cisco Catalyst 6000 series provides up to 384 10/100 Mbps
Ethernet ports for user connectivity. It can also provide 192 100Mbps
FastEthernet fiber uplinks and 130 Gigabit Ethernet ports.
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