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

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

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Computer Networking
Which two of the following are true regarding the distance-vector and link-state routing protocols?1. Link state sends its complete routing table out all active interfaces on periodic time intervals.2. Distance vector sends its complete routing table out all active interfaces on periodic time intervals.3. Link state sends updates containing the state of its own links to all routers in the internetwork.4. Distance vector sends updates containing the state of its own links to all routers in the internetwork.

1 only
3 only
2 and 3 only
None of these

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

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

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