Computer Networking
Which of the following types of connections can use full duplex?1. Hub to hub2. Switch to switch3. Host to host4. Switch to hub5. Switch to host

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

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Computer Networking
Baseband is

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

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Computer Networking
Error detecting code is

a code in which each expression conforms to specify rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and
an error-detecting code based on a summation operation performed on the bits to be checked
None of these
the ratio of the data units in error to the total number of data units
a check bit appended to an array of binary digits to make the sum of all the binary digits.

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Computer Networking
Which of the following summation operations is performed on the bits to check an error-detecting code?

Codec
Checksum
Coder-decoder
Broadband and baseband refer to the different frequencies at which infrared operates then transmitting signals in certain conditions
Attenuation

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