Telecom Exam 1 A

Front 1

The process of sending data over a signal by varying in either its amplitude, frequency, or phase.

Back 1

Modulation

Front 2

Tracking an analog waveform wave converting it to pulses that represent the wave's height above (or below) a threshold is termed:

Back 2

Pulse amplitude modulation (PAM)

Front 3

When converting analog days to digital signals, the frequency at which the snapshots are taken is called the _____ rate.

Back 3

Sampling

Front 4

A current or signal in one wire can produce an unwanted current or signal, called ______, in a second wire.

Back 4

Crosstalk

Front 5

This type of twisted pair wire is used in environments that have a noticeable amount of electromagnetic interference.

Back 5

Shielded

Front 6

This is a form in which a shield is wrapped around each wire individually, around all the wires together, or both.

Back 6

Shielded twisted pair (STP)

Front 7

Because of its good shielding properties, _______ is good at carrying analog signals with a wide range of frequencies.

Back 7

Coaxial cable

Front 8

This technology uses digital signaling in which the cable carries only one channel of digital data.

Back 8

Baseband coaxial

Front 9

This technology typically transmits analog signals and is capable of supporting multiple channels of data simultaneously.

Back 9

Broadband coaxial

Front 10

What cable type is virtually impossible to wiretap

Back 10

Fiber-optic

Front 11

This type of transmission requires the use of a very thin fiber-optic cable and a very focused light source, such as a laser.

Back 11

Single-mode

Front 12

What refers to the unintended modification of at least one signal component that makes the received signal different than originally transmitted.

Back 12

Distortion

Front 13

Which of the following refers to the delay between the transmission and reception is a data bit?

Back 13

Latency

Front 14

Which is a type of fiber optic cable that contains a core, with a large diameter over which many pulses is light generated by a light emitting diode travel at different angles?

Back 14

Multimode fiber

Front 15

The difference in time between a packet's transmission and its reception over a a specific route is known as:

Back 15

Propagation delay

Front 16

Which wave is a wave whose characteristics are modified by the addition of an information wave?

Back 16

Carrier wave

Front 17

Which methods sends multiple analog signals simultaneously over one channel by separating the channel into sub-channels?

Back 17

Frequency division multiplexing

Front 18

Which method of switching in which a connection is established between two nodes before they begin transmitting data?

Back 18

Circuit switching

Front 19

The wave that represents the signal to be transmitted is known as:

Back 19

The information wave

Front 20

What refers to a connection defined by two end points that is available exclusively for use by the customer who leases the line?

Back 20

Private line

Front 21

Which is the seventh layer of the OSI model?

Back 21

Application layer

Front 22

What is a feature of some protocols that allow them to service request without requiring a verified session and without guaranteeing data delivery?

Back 22

Connectionless

Front 23

What is the second layer is the OSI model?

Back 23

Data link layer

Front 24

A number that permanently identified a network node is referred to as:

Back 24

MAC Address

Front 25

What is the third layer of the OSI model?

Back 25

Network layer

Front 26

What is the sixth layer is the OSI model?

Back 26

Presentation

Front 27

A network that is the only network they offers a dedicated path is a:

Back 27

Circuit-switched

Front 28

A _______ network application provides some guarantee that information traveling through the network will be delivered to the intended receiver in the same order in which it was transmitted.

Back 28

Connection-oriented

Front 29

This application type does not guarantee the delivery of any information or data.

Back 29

Connectionless

Front 30

What are the four parts of a coaxial cable?

Back 30

Core, insulator, shielding, sheath

Front 31

What is throughput?

Back 31

The amount of data transmitted during a given time period.

Front 32

What is bandwidth?

Back 32

The difference between highest Ave lowest frequencies the medium can transmit.