Deck 1: Introduction to Computer Networks and Data Communications

Question 1

The application layer of the OSI model is responsible for token management.

Answer 1

False

Question 2

One of the most explosive areas of growth in recent years has been cellular phone networks.

Answer 2

True

Question 3

Metropolitan area networks can transfer data at fast,LAN speeds but over smaller geographic regions than typically associated with a local area network.

Answer 3

False

Question 4

The OSI model tells us what kind of wire or what kind of connector to use to connect the pieces of a network.

Question 5

The TCP/IP protocol suite does not have rigidly defined layers as the OSI model does.

Question 6

The Internet is not a single network but a collection of thousands of networks.

Question 7

SNMP is used to allow users to send and receive electronic mail.

Question 8

By the 1970s,telephone systems carried more computer data than voice.

Question 9

The session layer of the OSI model is responsible for establishing synchronization points.

Question 10

To communicate with the Internet using a dial-up modem,a user's computer must connect to another computer that is already communicating with the Internet.

Question 11

Telnet is used to allow a remote user to log in to another computer system.

Question 12

A type of microcomputer-to-local area network connection that is growing in popularity is the wireless connection.

Question 13

Some people call computer terminals thick-client workstations.

Question 14

In a network architecture,as the packet moves up through the layers,the data packet shrinks in size.

Question 15

Data is information that has been translated into a form that is more conducive to storage,transmission,and calculation.

Question 16

Network architectures are cohesive layers of protocols defining a set of communication services.

Question 17

It is not possible to connect two local area networks so that they can share peripherals as well as software.

Question 18

The data link layer of the OSI model can incorporate some form of error detection software.

Question 19

The network layer of the OSI model is an end-to-end layer.

Question 20

The lowest layer of the TCP/IP protocol suite is the network access or physcial layer.

Question 21

____ is the design,installation,and support of a network and its hardware and software.

A) Convergence
B) Voice network
C) Data network
D) Network management

Question 22

____ is the transmission of multiple signals on one medium.

A) Multiplexing
B) Codec
C) Modem
D) Package

Question 23

The ____ layer of the OSI model performs a series of miscellaneous functions necessary for presenting the data package properly to the sender or receiver.

A) transport
B) presentation
C) applications
D) session

Question 24

The ____ layer of the OSI model performs end-to-end error control and end-to-end flow control.

A) application
B) presentation
C) transport
D) session

Question 25

____ are more advanced devices that are replacing hubs and are capable of filtering out unnecessary traffic.

A) Switches
B) Routers
C) Servers
D) Workstations

Question 26

The Internet "talks" only ____,so users must use software that supports this protocol.

A) IPX/SPX
B) DSL
C) TCP/IP
D) FTP

Question 27

A ____ is a device that is essentially a keyboard and screen with no long-term storage capabilities and little,if any,processing power.

A) protocol
B) mainframe
C) thick-client
D) computer terminal

Question 28

The ____ layer of the OSI model performs end-to-end connection control.

A) transport
B) data link
C) physical
D) session

Question 29

The ____ layer is the OSI layer that handles routing.

A) network
B) application
C) transport
D) session

Question 30

____ are the computers that store network software and shared or private user files.

A) Switches
B) Routers
C) Servers
D) Hubs

Question 31

The personal area network was created in the late ____.

A) 1970s
B) 1980s
C) 1990s
D) 2000s

Question 32

A ____ is an interconnection of computers and computing equipment using either wires or radio waves over small or large geographic areas.

A) personal area network (PAN)
B) computer network
C) wireless network
D) local area network (LAN)

Question 33

A modem and a dial-up telephone service provides data transfer rates of approximately ____.

A) 56,000 bits per second (56 kbps)
B) 112,000 bits per second (112 kbps)
C) 128,000 bits per second (128 kbps)
D) 256,000 bits per second (256 kbps)

Question 34

The ____ layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted.

A) application
B) session
C) transport
D) network access

Question 35

In a(n)____ system,a user at a microcomputer,or client machine,issues a request for some form of data or service.

A) wireless
B) client/server
C) bridge
D) Internet

Question 36

The devices that usually connect two or more LANs are the switch,hub,and ____.

A) workstation
B) access point
C) server
D) router

Question 37

The International Organization for Standardization (ISO)created the ____ reference model in an attempt to standardize the design of communication systems and the interoperability between their components.

A) Open Systems Interconnection (OSI)
B) TCP/IP
C) FTP
D) ASCII

Question 38

Connecting two wide area networks requires devices such as high-speed ____.

A) hubs
B) routers
C) bridges
D) reflectors

Question 39

The ____ in a network architecture define a model for the functions or services that need to be performed.

A) servers
B) workstations
C) routers
D) layers

Question 40

A ____ is a high-speed network that interconnects multiple sites within a close geographic region,such as a large urban area.

A) metropolitan area network (MAN)
B) wide area network (WAN)
C) local area network (LAN)
D) personal area network (PAN)

Question 41

Metropolitan area networks are a cross between local area networks and ____________________ networks.

Question 42

____________________ are personal computers or microcomputers where users reside.

Question 43

The TCP/IP ____ layer supports network applications and may include presentation services.

A) transport
B) application
C) network
D) network access

Question 44

A dictionary might define "____________________" as the process of coming together toward single point.

Question 45

Computer networks that use radio waves are termed ____________________ and can involve broadcast radio,microwaves,or satellite transmissions.

Question 46

____ is used to allow the numerous elements within a computer network to be managed from a single point.

A) Simple Network Management Protocol (SNMP)
B) Simple Mail Transfer Protocol (SMTP)
C) Telnet
D) File Transfer Protocol (FTP)

Question 47

The TCP/IP ____ layer commonly uses the Transmission Control Protocol (TCP)to maintain an error-free end-to-end connection.

A) network
B) network access
C) transport
D) application

Question 48

A(n)____________________ converts the local area network data into wide area network data.

Question 49

The addition of control information to a packet as it moves through the layers is called ____.

A) encapsulation
B) overloading
C) payload
D) filtering

Question 50

The bottom layer in the OSI model-the ____ layer-handles the transmission of bits over a communications channel.

A) data link
B) application
C) physical
D) network

Question 51

The two most common architectures known today are the Open Systems Interconnection (OSI)model and the ____________________ protocol suite.

Question 52

____ ensures that the network does not become saturated at any one point.

A) End-to-end error control
B) Congestion control
C) End-to-end flow control
D) Synchronization points control

Question 53

The merging together of two or more businesses or technologies is termed

A) convergence
B) inversion
C) manipulation
D) commercilization

Question 54

A(n)____________________,or communications model,places the appropriate network pieces in layers.

Question 55

The OSI model consists of seven layers: application,presentation,session,____________________,network,data link,and physical.

Question 56

In a(n)______________________________ connection,the action of a person or object triggers a sensor that is connected to a network.

Question 57

The TCP/IP ____ layer,sometimes called the Internet layer,is roughly equivalent to OSI's network layer.

A) network access
B) application
C) transport
D) network

Question 58

A(n)____ connection is a nonphysical connection between sender and receiver that allows an exchange of commands and responses.

A) physical
B) encapsulated
C) real
D) logical

Question 59

____________________ are sets of rules used by communication devices.

Question 60

The ____ was not created by a standards-making organization but by a group of computer scientists.

A) OSI model
B) FTP protocol
C) Relapse protocol
D) TCP/IP protocol suite

Question 61

What are the components of a wide area network?

Question 62

The ____________________ connection is the only direct connection between sender and receiver and is at the physical layer,where actual 1s and 0s are transmitted over wires or airwaves.

Question 63

The ____________________ layer of the OSI model is responsible for taking data from the network layer and transforming it into a cohesive unit called a frame.

Question 64

The ____________________ protocol suite incorporates the TCP and IP protocols and has in fact always been more popular than the OSI model.

Question 65

The top layer in the OSI model is the ____________________ layer,where the application using the network resides.

Question 66

The ____________________ layer of the OSI model is responsible for creating,maintaining,and ending network connections.

Question 67

___________________________________ is used to allow Web browsers and servers to send and receive World Wide Web pages.

Question 68

Briefly explain some examples of convergence in the wireless market.

Question 69

Explain what is meant by personal area network-to-workstation connections.

Question 70

_________________________ are backup points that are used in case of errors or failures.

Question 71

The _________________________ is the software that prepares a packet of data so that it can move from one network to another on the Internet or within a set of corporate networks.

Question 72

______________________________ is used to transfer files from one computer system to another.

Question 73

What are the benefits of a microcomputer-to-local area network connection?

Question 74

The ______________ layer of the TCP/IP protocol suite is responsible for making sure that what leaves one end of the network arrives at the other end of the network exactly the same.

Question 75

What is data communications?

Question 76

The ____________________ layer of the OSI model is responsible for establishing sessions between users.