stars

Question 1

What is the advantage of using shielded over unshielded

Answer 1

reduces noise

Question 2

What are the three types of converters?

Answer 2

Analog to Digital
Digital to Analog
Network Media

Question 3

a communication device that combines several or voice signals for transmission over one single medium

Answer 3

Multiplexer

Question 4

What are the benefits of a multiplexer?

Answer 4

Error detection
Data Correction and security
Cuts communication costs

Question 5

What type of connectors does the unshielded twisted pair cable use?

Answer 5

Telephone type connectors with insulated wires

Question 6

combines several data signals onto a single fiber optic cable for transmission

Answer 6

Wave Division Multiplexing

Question 7

What two types of multi-mode fiber communication medium type cables exist?

Answer 7

Graded

Stepped

Question 8

What advantage does single-mode fiber communication medium type cable have over multi-mode fiber?

Answer 8

Distance

Question 9

How does time division multiplexing combine signals on a single line for transmission?

Answer 9

Scrambles packets into smaller segment with each data stream assigned a specific time slot in a set

Question 10

What occurs within a specific time slot if there is no data to send?

Answer 10

The time slot is left blank

Question 11

a time division multiplexer process of converting speech from an analog signal into an encoded digital value?

Answer 11

Pulse Code Modulation

Question 12

What are the 3 parts of a CPU?

Answer 12

Control Unit
Registers
Arithmetic Logic Unit (ALU)

Question 13

RAM

Answer 13

data lost during power off

Question 14

ROM

Answer 14

data retained during power off

Question 15

In wave division multiplexing, why are signals converted into light prior to multiplexing?

Answer 15

light at different frequencies doesn’t interfere with each other

Question 16

What are 3 examples of wired networks?

Answer 16

Local Area Network
Metro Area Network
World Wide Web

Question 17

What is a bus topology?

Answer 17

A network that uses long cable as a central backbone and attaches each node via a drop cable

Question 18

What is a Star topology?

Answer 18

A network that uses a central node to connect peripheral nodes

Question 19

What is a Mesh topology?

Answer 19

each device is connected to every other device by separate cabling

Question 20

What is a Tree topology?

Answer 20

hybrid topology that combines characteristics of star and bus topologies

Question 21

a standard method which enables communication and with an agreed upon format for transmitting data between two network devices

Answer 21

protocol

Question 22

What type of communication guarantees the delivery of information or data by the protocols employed to transmit it?

Answer 22

Connection Oriented Communication

Question 23

What is the application layer responsible for?

Answer 23

it relates to the services that directly support user application

Question 24

What layer is responsible for the delivery and formatting of information to the application layer for further processing or display?

Answer 24

Presentation layer

Question 25

A highly structured dialogue btw 2 workstations

Answer 25

session layer

Question 26

Responsible for flow control, end to end error recovery, and data delivery btw applications on host computers

Answer 26

transport layer

Question 27

Addressing packers and translating logical addresses/internet protocol and names into physical addresses/media access control

Answer 27

network layer

Question 28

What is the data link layer responsible for?

Answer 28

sending data frames

Question 29

transmits unstructured, raw bit stream over a physical medium and determines how to send it

Answer 29

physical layer