Computer Networking
An error-detecting code inserted as a field in a block of data to be transmitted is known as

flow control
Error detecting code
Frame check sequence
None of these
Checksum

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Computer Networking
Bandlimited signal is

All of these
a signal all of whose energy is contained within a finite frequency range
simultaneous transmission of data to a number of stations
None of these
transmission of signals without modulation

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

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

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Computer Networking
What is the purpose of Spanning Tree Protocol in a switched LAN?

To manage the VLAN database across multiple switches
To prevent switching loops in networks with redundant switched paths
To prevent routing loops in networks with redundant paths
To provide a mechanism for network monitoring in switched environments
To create collision domains

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