Exam 2: Network Media

Interference is also called ____________________.

A device known as a _____ converts data from a digital signal to an analog signal and back again.

Baseband signaling requires that a modem be used.

Spread spectrum is a technique that takes a narrow signal and spreads it over a broader portion of the radio frequency band.

The source of near end crosstalk (NEXT) interference is from another data signal being transmitted.

A standard size of a fiber optic cable is _____.

The newest category of unshielded twisted pair cable is Category ____________________.

Coaxial cable has a single copper wire at its center and is surrounded by insulation and shielding.

Broadband signaling uses analog transmission.

Unshielded twisted pair (UTP) cables have a foil shielding on the inside of the jacket that reduces interference.

Each is a standard for unshielded twisted pair except _____.

_____ signaling sends one data signal across the network media.

There are two basic types of copper cables used for networks, ____________________ and twisted pair.

Cellular phones, citizens band and police radios, small office or household appliances, fluorescent lights, and loose electrical connections can all cause _____.

Most computer networks using twisted pair cable have only _____ pairs of wires.

Explain how broadband signaling functions.

A loss of signal power is known as _____.

_____ cable, which looks similar to the cable that carries a cable TV signal, is approximately one-quarter of an inch in diameter.

A network interface card (NIC) serves as the connection between the personal computer and the network media.

Explain how fiber optic cables transmit data.