Computer Networking
Which fields are contained within an IEEE Ethernet frame header?1. Source and destination MAC address2. Source and destination network address3. Source and destination MAC address and source and destination network address4. FCS field

3 only
2 only
1 and 4
2 and 3 only

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Computer Networking
Satellite-Switched Time-Division Multiple Access (SS/TDMA) is

None of these
a form of TDMA in which circuit switching is used to dynamically change the channel assignments
All of these
a medium access control technique for multiple access transmission media
the method of determining which device has access to the transmission medium at any time.

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Computer Networking
You have your laptop directly connected into a router's Ethernet port. Which of the following are among the requirements for the copy flash tftp command to be successful?1. TFTP server software must be running on the router.2. TFTP server software must be running on your laptop.3. The Ethernet cable connecting the laptop directly into the router's Ethernet port must be a straight-through cable.4. The laptop must be on the same subnet as the router's Ethernet interface.5. The copy flash tftp command must be supplied the IP address of the laptop.

2, 4 and 5
5 only
1, 3 and 4
3 and 5 only

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Computer Networking
A WATS arrangement

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
is always less expensive than flat-rate service
is less expensive than flat-rate service only when the number of calls is small and the duration of each is long
is never less expensive than flat-rate service

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