Computer Networking
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost.

KIK (1 + F)
1/ (1 - F)
None of these
P I (K + 1)
K I (K - P)

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Computer Networking
What does the passive command provide to dynamic routing protocols?

Stops an interface from sending periodic dynamic updates but not from receiving updates.
Stops the router from sending any dynamic updates.
Stops the router from receiving any dynamic updates.
Stops an interface from sending or receiving periodic dynamic updates.

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Computer Networking
Carrier is

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

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