CSIS 1250 Modules 4-7

Which of the following is the most common network media?

UTP (Unshielded twisted-pair cable)

Which of these is the name for the capacity of a medium to carry data?

Bandwidth

Which media uses electrical pulses to represent bits?

Copper

The physical layer of the receiving device passes bits up to which higher level layer?

Data link

True or false? When a frame is encoded by the physical layer, all bits are sent over the media at the same time.

False

True or false? The physical layer is only concerned with wired network connections.

False.

Which media uses patterns of light to represent bits?

Fiber Optic

What PDU is received by the physical layer for encoding and transmission?

Frame

Which of these is a measure of the transfer of bits across the media?

Throughput

Which media uses patterns of microwaves to represent bits?

Wireless

Which of the following attaches antennas to wireless devices? It can also be bundled with fiber-optic cabling for two-way data transmission.

coaxial

Which of the following terminates with BNC, N type and F type connectors?

coaxial

Which of the following fiber-optic cable types can help data travel approximately 500 meters?

multimode

Which of the following fiber-optic cable types is used within a campus network?

multimode

Which of the following fiber-optic cable types use light emitting diodes (LEDs) as a data light source transmitter?

multimode

Which of the following fiber-optic cable types can travel approximately 100 km?

single-mode

Which of the following counters EMI and RFI by using shielding techniques and special connectors?

STP (Shielded twisted-pair cable)

Which of the following fiber-optic cable types is used to connect long-distance telephony and cable TV applications?

single-mode

Which of the following fiber-optic cable types use lasers in a single stream as a data light source transmitter?

single-mode