MIS 4163 quiz 3

Which of the following statements is true?

bandwidth is constant across any wire, therefore distance is not relevant to its capacity

Which of the following would be considered a type of wireless media?

microwave

Frequency division multiplexing:

operates by dividing the signal into different frequencies

_________ is the basic physical layout of the circuit.

circuit configuration

Guided media refers to the type of media in which the message is broadcast through the air.

False

In a multipoint circuit configuration, each computer can use the circuit at the same time.

False

In simplex transmission, the data flows in both directions at the same time

False

Multiplexing increases the cost of provisioning network circuits.

False

Serial mode transmission is much faster than parallel mode transmission.

False

Coding schemes are groups of bits that translate into the "alphabet" of any given system.

True

Data compression can increase the throughput of a communication link.

True

The "local loop" refers to the wires that run from the customer premises to the telephone switch of the telephone company.

True

A _________ is an FDM device that splits the physical circuit into three logical circuits (phone, upstream data, downstream data).

DSL modem

___________ is not a type of digital signaling technique.

Data rate signaling

With which type of digital signaling does the signal always return to zero volts after each bit?

Return-to-zero signaling

Which of the following statements is correct?

Serial transmission is slower than parallel transmission.

One way to reduce quantizing errors is to increase the sampling rate of the analog signal.

True

In general, networks designed to transmit primarily computer data are likely to be ________.

digital

Which of the following is the most secure wired media?

fiber optic cable

The ability to transmit in both directions, but only in one direction at a time is an example of _______________ transmission.

half-duplex