Computer Networking
A WATS arrangement

is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is always less expensive than flat-rate service
is never less expensive than flat-rate service
None of these
is less expensive than flat-rate service only when the number of calls is large and the duration of each is short

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Computer Networking
Which of the following is true when describing a link-local address?

These are like private addresses in IPv4 in that they are not meant to be routed.
These addresses are meant for nonrouting purposes, but they are almost globally unique so it is unlikely they will have an address overlap.
Packets addressed to a unicast address are delivered to a single interface.
These are your typical publicly routable addresses, just like a regular publicly routable address in IPv4.

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Computer Networking
If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?

Flood the network with the frame
Add the source address and port to the MAC address table and forward the frame out the destination port
Add the destination to the MAC address table and then forward the frame
Discard it and send an error message back to the originating host

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Computer Networking
ARP (Address Resolution Protocol) is

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

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