NAVEDTRA 14224, INFORMATION SYSTEMS TECHNICIAN TRAINING SERIES MODULE 3--NETWORK COMMUNICATIONS

Question 1

What can be used to amplify electrical signals?

Answer 1

Repeaters

Question 2

What make it possible to interconnect like LANs?

Answer 2

Bridges

Question 3

What enable networks to communicate using the most efficient path?

Answer 3

Routers

Question 4

What make it possible to interconnect unlike LANs?

Answer 4

Gateways

Question 5

Which layer of the OSI model do repeaters work at?

Answer 5

1

Question 6

Which layers of the OSI model do bridges work on?

Answer 6

1 and 2

Question 7

Which layer of the OSI model do routers work on?

Answer 7

3

Question 8

Which layers of the OSI model can a brouter work on?

Answer 8

2 or 3

Question 9

Which layer of the OSI model do gateways work on?

Answer 9

7

Question 10

What serves as a termination point for cable running from individual nodes in a network?

Answer 10

Concentrator

Question 11

Which device serves as a common termination point that can relay signals along the appropriate paths?

Answer 11

Hub

Question 12

Which type of transmission media is immune to interference caused by electrical or electronic devices?

Answer 12

Fiber

Question 13

Which type of cable refers to the cable that forms the main trunk of a network?

Answer 13

Backbone

Question 14

How many different types of backbone cable are recognized by EIA/TIA-568?

Answer 14

4

Question 15

What is the central computer in a network that is responsible for managing the network?

Answer 15

Server

Question 16

Which type of servers can be used as both a server and a workstation?

Answer 16

Non-dedicated

Question 17

What are the majority of all network-related problems caused by?

Answer 17

Operator error

Question 18

How many primary culprits to network malfunctions are there?

Answer 18

3

Question 19

How many categories are component failures categorized into?

Answer 19

2

Question 20

What are the simple set of system checks called that are stored in ROM that are run when the computer is turned on?

Answer 20

Power On Self Test (POST)

Question 21

Which device can be used to monitor the activity of a network and the stations on it and provides daily summaries or long-term trends of network usage and performance?

Answer 21

Network analyzer

Question 22

What is the simultaneous presence of signals from two nodes on the network referred to as?

Answer 22

Data collision

Question 23

What is the hardware signal that is sent from a potential transmitter to a destination to indicate that the transmitter wishes to begin a transmission?

Answer 23

Request To Send (CTS)

Question 24

Which term is used to describe the random electrical signals that become part of a transmission, that serve to make the signal component of the transmission more difficult to identify?

Answer 24

Noise

Question 25

What is the hardware signal that is sent from a receiver to a transmitter to indicate that the transmitter can begin sending?

Answer 25

Clear To Send (CTS)

Question 26

How is the Signal-to-Noise Ratio (SNR) usually expressed?

Answer 26

dB

Question 27

What can be used to determine how long a cable segment can be before the signal loss is unacceptably high?

Answer 27

Signal-to-Noise Ratio (SNR)

Question 28

What is defined as the decrease in signal strength, measured in decibels (dB) per 100 feet?

Answer 28

Attenuation

Question 29

What is defined as interference in the form of a signal from a neighboring cable or circuit?

Answer 29

Crosstalk

Question 30

What is used to try to eliminate the effects of certain types of distortions on the signal?

Answer 30

Line conditioning

Question 31

Which device is used to test the integrity of a section of cable before the cable is even unwound?

Answer 31

Time Domain Reflectometry (TDR)

Question 32

Which type of connector uses two prongs to pierce the cable to make its connection?

Answer 32

Vampire tap