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

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

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Computer Networking
CSMA (Carrier Sense Multiple Access) is

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

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Computer Networking
You have two switches connected together with two crossover cables for redundancy, and STP is disabled. Which of the following will happen between the switches?

The switches will automatically load-balance between the two links.
The MAC forward/filter table will not update on the switch.
Broadcast storms will occur on the switched network.
The routing tables on the switches will not update.

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