Computer Networking
Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?

None of these
Interface
Modem
Attenuation
Teleprocessor

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Computer Networking
Which is true regarding EIGRP successor routes?1. A successor route is used by EIGRP to forward traffic to a destination.2. Successor routes are saved in the topology table to be used if the primary route fails.3. Successor routes are flagged as "active" in the routing table.4. A successor route may be backed up by a feasible successor route.5. Successor routes are stored in the neighbor table following the discovery process.

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

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Computer Networking
MAC is

None of these
a very common bit-oriented data link protocol issued to ISO.
a method access control technique or multiple-access transmission media
network access standard for connecting stations to a circuit-switched network
a method of determining which device has access to the transmission medium at any time

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Computer Networking
Communication network is

a continuous frequency capable of being modulated or impressed with a second signal
a collection of interconnected functional units that provides a data communications service among stations attached to the network
one or more conductors that serve as a common connection for a related group of devices
the condition with two or more stations attempt to use the same channel at the same time
None of these

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