Computer Networking
Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.

3, 2, 1, 7
3, 3, 1, 7
3, 3, 2, none
3, 2, 1, none
All of these

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Computer Networking
ICMP (Internet Control Message Protocol) is

a TCP/IP protocol used to dynamically bind a high level IP Address to a low-level physical hardware address
a TCP/IP high level protocol for transferring files from one machine to another
a protocol used to monitor computers
a protocol that handles error and control messages
None of these

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Computer Networking
Which of the following is true regarding access lists applied to an interface?

One access list may be configured, per direction, for each layer 3 protocol configured on an interface.
You can apply only one access list on any interface.
You can apply two access lists to any interface.
You can place as many access lists as you want on any interface until you run out of memory.

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