Computer Networking
Your switch has a port status LED that is alternating between green and amber. What could this indicate?

The port is experiencing errors.
The port is in STP blocking mode.
The port is shut down.
Nothing; this is normal.

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Computer Networking
How should a router that is being used in a Frame Relay network be configured to keep split horizon issues from preventing routing updates?

Configure a single subinterface to establish multiple PVC connections to multiple remote router interfaces.
Configure many subinterfaces in the same subnet.
Configure a separate subinterface for each PVC with a unique DLCI and subnet assigned to the subinterface.
Configure each Frame Relay circuit as a point-to-point line to support multicast and broadcast traffic.

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Computer Networking
Contention is

the condition when two or more stations attempt to use the same channel at the same time
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
None of these

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Computer Networking
The term 'duplex' refers to the ability of the data receiving stations to echo back a confirming message to the sender. In full duplex data transmission, both the sender and the receiver

can receive and send data simultaneously
can send or receive data one at a time
None of these
can do one way data transmission only
cannot talk at once

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