Exam 1 review

Question 1

half-duplex

Answer 1

two-way comm, but only one direction can send data at a time

Question 2

application architectures

Answer 2

functions of the application layer software are spread among the clients and servers in the network

Question 3

bandwidth

Answer 3

difference between the highest and lowest frequencies in a band or set of frequencies

Question 4

codec

Answer 4

translates analog into digital

Question 5

coding scheme

Answer 5

language that computers use to represent data

Question 6

server

Answer 6

stores data or software that can be accessed by the clients

Question 7

client

Answer 7

The input-output hardware device at the user’s end of a communication circuit.

Question 8

peer-to-peer network

Answer 8

A type of network that connects two client computers directly together.

Question 9

router

Answer 9

device that connects 2 or more networks

Question 10

Simplex transmission

Answer 10

One-way transmission, such as that with radios and TVs.

Question 11

Post Office Protocol (POP)

Answer 11

An application layer over the internet standard protocol used by local email clients to retrieve email from a remote server over TCP/IP connection.

Question 12

multiplexing

Answer 12

A form of transmission that allows multiple signals to travel simultaneously over one medium.

Question 13

full-duplex

Answer 13

Communicate in both directions at the same time

Question 14

Internet Message Access Protocol (IMAP)

Answer 14

A protocol used to retrieve email messages.

Question 15

Ethernet Transmission

Answer 15

Ethernet systems divide data into frames, similar to internet packets. Each frame contains source and destination addresses and error checking data.

Question 16

geosynchronous

Answer 16

having a period of rotation synchronous with that of the earth’s rotation

Question 17

Layer 1 - Physical layer

Answer 17

physical connection between sender and receiver

Question 18

Layer 2 - Data Link Layer

Answer 18

responsible for moving a message from one computer to the next computer to the next computer in the network path from the sender to the receiver

Question 19

Layer 3: Network Layer

Answer 19

performs routing

Question 20

Layer 4 - Transport Layer

Answer 20

This layer ensures error-free transmission between host through logical addressing. Inbound & outbound ports are controlled in this layer. Ports = transport layer.

Question 21

Layer 5 - Session Layer

Answer 21

managing and structuring all session

Question 22

Layer 6 - Presentation Layer

Answer 22

formats the data for presentation to the user

Question 23

Layer 7 - Application Layer

Answer 23

This layer is where message creation and packet creation begins.

Question 24

groups of layers

Answer 24

-application layer
-internetwork layer
-hardware layer

Question 25

HTML (Hypertext Markup Language)

Answer 25

nonproprietary markup language that a web browser interprets and uses to display the content as a web page

Question 26

http

Answer 26

all web browsers must use when they request a web page

Question 27

Infrastructure as a Service (IaaS)

Answer 27

delivers hardware networking capabilities, including the use of servers, networking, and storage, over the cloud using a pay-per-use revenue model

Question 28

Internet Model

Answer 28

A five-layer network model most commonly used

Question 29

Low Earth Orbit (LEO)

Answer 29

satellites are placed in lower orbits to minimize prorogation delay

Question 30

Multipurpose Internet Mail Extensions (MIME)

Answer 30

several standards for nontext files have been developed that can be operate together with SMTP

Question 31

Modem

Answer 31

A device that allows computers to communicate over telephone lines

Question 32

Modulation

Answer 32

process of impressing low-frequency information signals into high-frequency carrier signal

Question 33

open systems interconnection reference model (OSI model)

Answer 33

computer-to-computer communications over a network

Question 34

Platform as a Service (PaaS)

Answer 34

hardward and software that provides an operating system on which developers can create and deploy

Question 35

Pulse Code Modulation (PCM)

Answer 35

method where computer circuits transmit binary data as a series of electrical pulses

Question 36

Protocol Data Unit (PDU)

Answer 36

contains information that is needed to transmit the message through the network

Question 37

Software as a Service (SaaS)

Answer 37

A form of cloud computing where a firm subscribes to a third-party software and receives a service that is delivered online.

Question 38

Simple Mail Transfer Protocol (SMTP)

Answer 38

Internet standard protocol for transferring e-mail messages from one computer to another

Question 39

standards

Answer 39

hardware and software produced by different vendors can work together

Question 40

Standards Organizations

Answer 40

Government agencies, voluntary groups, and industry associations involved in establishing guidelines to assist in bringing uniformity to business processes or products.

Question 41

thin client

Answer 41

little or no application logic on client

Question 42

thick client

Answer 42

most or all application logic on client

Question 43

Local Area Network (LAN)

Answer 43

group of computers located in the same general area

Question 44

backbone networks (BN)

Answer 44

larger, central network connecting several LANs, other BNs, MANs, and WANs

Question 45

Wide area Networks (WAN)

Answer 45

connect BNs and MANs

Question 46

Uniform Resource Locator (URL)

Answer 46

web address

Question 47

video conferencing

Answer 47

instant messaging

Question 48

Voice over Internet Protocol (VoIP)

Answer 48

commonly used to transmit phone conversations over digital networks

Question 49

wireless media

Answer 49

message is broadcast through the air, such as microwave or satellite