Deck 8: Communications and Networks

Question 1

In a computer network,this node requests and uses resources available from other nodes.

A)client
B)server
C)directory server
D)host

Answer 1

A

Question 2

Cellular services use ________ to provide wireless connectivity to the Internet for smartphones.

A)ADSL
B)T1 and T3 cellular networks
C)DSL
D)3G and 4G cellular networks

Answer 2

D

Question 3

The essential features of this include identifying,sending,and receiving devices and breaking information into small parts for transmission across the Internet.

A)DNS
B)TCP/IP
C)FTP
D)HTTPs

Answer 3

B

Question 4

Which among the following is considered a line-of-sight communication medium?

A)broadcast radio
B)satellite
C)Bluetooth
D)microwave

Question 5

One of the most dramatic changes in connectivity and communications in the past few years has been ________.

A)widespread use of mobile devices with wireless Internet connectivity
B)chat rooms
C)satellite uplinks
D)running programs on remote computers

Question 6

________ is the process of breaking down information sent or transmitted across the Internet into small parts.

A)Protocol
B)Bandwidth
C)Identification
D)Packetization

Question 7

Every computer on the Internet has a unique numeric address called a(n)________.

A)domain address
B)protocol address
C)IP address
D)web address

Question 8

In a communication system,which among the following originate and accept messages in the form of data,information,and/or instructions?

A)communication channel
B)sending and receiving devices
C)connection devices
D)data transmission specifications

Question 9

________ is a term relating to sending data to a satellite.

A)Uplink
B)Upload
C)Download
D)Downlink

Question 10

The ________ is the central node that coordinates the flow of data by sending messages directly between the sender and receiver nodes.

A)client
B)server
C)switch
D)gateway

Question 11

Microwave communication uses high-frequency ________.

A)radio waves
B)infrared
C)satellite communications
D)optic fibers

Question 12

This device enables connectivity between two LANS or a LAN and a larger network.

A)network gateway
B)node
C)hub
D)router

Question 13

Using this type of communications channel,several users can simultaneously use a single connection for high-speed data transfer.

A)voiceband
B)medium band
C)broadband
D)baseband

Question 14

A wireless access point that provides Internet access in a public place such as a coffee shop,library,bookstore,or university.

A)hotspot
B)NIC
C)blindspot
D)gateway

Question 15

Which physical connection is the fastest?

A)twisted pair
B)coaxial cable
C)fiber-optic cable
D)microwave

Question 16

In a communication system,which among the following convert messages into packets that can travel across the communication channel?

A)connection devices
B)sending and receiving devices
C)storage devices
D)secondary devices

Question 17

A service that uses existing phone lines to provide high-speed connections is called ________.

A)WWAN
B)3G/4G
C)voiceband
D)DSL

Question 18

WiMax stands for ________.

A)wide-area access for maximum reach
B)wide-area range to maximize access
C)worldwide interoperability for microwave access
D)worldwide access to maximize interoperability

Question 19

The capacity of a communication channel is measured in ________.

A)bandwidth
B)bit capacity
C)band rate
D)data flow

Question 20

The GPS device in an automobile uses which communication channel?

A)infrared
B)radio frequency (RF)
C)microwave
D)satellite

Question 21

________ are countrywide and worldwide networks.

A)Cable systems
B)Wide area networks
C)Satellite systems
D)Local area networks

Question 22

________ is the name of the process of converting from analog to digital.

A)Modulation
B)Optical recognition
C)Demodulation
D)Virtualization

Question 23

The actual connecting or transmission medium that carries the message in a communication system is called the ________.

A)communication channel
B)data transmission
C)communication system
D)connection device

Question 24

A(n)________ is a private network that connects more than one organization.

A)intranet
B)extranet
C)internet
D)ethernet

Question 25

This type of network strategy uses central servers to coordinate and supply services to other nodes on the network.

A)peer-to-peer
B)client/server
C)BitTorrent
D)personal area network

Question 26

A network topology in which the central node is connected to two or more subordinate nodes that,in turn,are connected to other subordinate nodes.(subordinate not hyphenated in text)

A)star
B)bus
C)mesh
D)tree

Question 27

________ is a high-frequency transmission medium that has a single solid-copper core.

A)Twisted pair
B)Coaxial cable
C)Microwave
D)Fiber-optic cable

Question 28

________ uses standard telephone lines to provide high-speed connections.

A)Cellular
B)Satellite
C)Cable
D)DSL

Question 29

A ________ area network is a type of wireless network that works within your immediate surroundings to connect cell phones to headsets,controllers to game systems,and so on.

A)wide
B)gateway
C)personal
D)local

Question 30

A network ________ is a device that allows one LAN to be linked to other LANs or to larger networks.

A)server
B)client
C)switch
D)gateway

Question 31

________ transmits data as pulses of light through tiny tubes of glass.

A)Cellular
B)Fiber optic cable
C)Microwave
D)WiMax

Question 32

Remote users can connect to an organization's network through this type of secure private connection.

A)VPN
B)DSL
C)WWAN
D)P2P

Question 33

The range of Wi-Fi networks using microwave connections is being extended over greater distances using a new technology known as ________.

A)WiMax
B)broadcast
C)RAID
D)Bluetooth

Question 34

A LAN set up for a household's personal use is called a ________ network.

A)home
B)client
C)gateway
D)servant

Question 35

All communications between a company's internal networks and the outside world pass through this server.

A)base station
B)node
C)supercomputer
D)proxy

Question 36

Organizations use the following to allow suppliers and others limited access to their networks.

A)intranets
B)extranets
C)firewalls
D)proxy servers

Question 37

A ________ is a network where the nodes are in close physical proximity to each other.

A)wide area network
B)satellite system
C)local area network
D)cable system

Question 38

A(n)________ is a private network within an organization that is designed to resemble the Internet.

A)intranet
B)ethernet
C)internet
D)extranet

Question 39

This type of network topology does not use a specific physical layout.

A)hybrid
B)hierarchical
C)mesh
D)tree

Question 40

A ________ network system uses central servers to coordinate and supply services to other nodes on the network.

A)switch
B)wide area
C)gateway
D)client-server

Question 41

Fiber-optic cable transmits data as pulses of light through tiny tubes of glass.

Question 42

Network architecture describes how a computer network is configured and what topologies and strategies are employed.

Question 43

Connection devices are the actual connecting or transmission medium that carries the message.

Question 44

A prototype is a set of communication rules for the exchange of information.

Question 45

TCP/IP protocol involves identifying,sending,and receiving devices and breaking information into small parts for transmission across the Internet.

Question 46

Packetization refers to breaking information into small parts for transmission across the Internet.

Question 47

________ describes how a network is arranged and how resources are coordinated and shared.

A)Proxy structure
B)Node topology
C)Network architecture
D)Base strategy

Question 48

A MAN is a network that is frequently used as links between office buildings that are located throughout a city.

Question 49

Standard telephone lines use coaxial cables.

Question 50

WANs are widely used by organizations to link personal computers and to share printers and other resources.

Question 51

Network operating systems (NOS)control and coordinate the activities of all computers and other devices on a network.

Question 52

In a network environment,a client provides resources for the servers.

Question 53

In a wireless LAN,all communications pass through the network's centrally located wireless access point or ________ station.

A)gateway
B)base
C)node
D)proxy

Question 54

In a client/server network,the ________ provides access to resources and services.

A)client
B)switch
C)server
D)gateway

Question 55

Most firewalls include a special computer called a ________ server to manage communications between the internal networks and the outside world.

A)node switch
B)base station
C)client
D)proxy

Question 56

A network gateway can be used to connect the LAN of one office group to the LAN of another office group.

Question 57

The most common standard in LANs is called ethernet.

Question 58

A ________ network topology does not use a specific physical layout,but requires that each node have more than one connection to the other nodes.

A)star
B)bus
C)tree
D)mesh

Question 59

A hierarchical network topology in which each device is connected to a central node,either directly or through one or more other devices,is also called a ________ network.

A)tree
B)bus
C)mesh
D)star

Question 60

Modulation is the name of the process of converting from digital to analog.

Question 61

What are the advantages and disadvantages of using a peer-to-peer system?

Question 62

Describe the four categories of bandwidth.

Question 63

In a peer-to-peer network,only the central host computer supplies the resources,the other computers request resources from this host.

Question 64

Describe the differences between the three major physical connection mediums: twisted-pair cable,coaxial cable,and fiber-optic cable.

Question 65

Compare the high-speed connection services: DSL,cable,fiber-optic service (FiOS),satellite,and cellular services.

Question 66

A firewall is a specialized technology designed to protect an organization's network against external threats.

Question 67

What is a WLAN? How does it work?

Question 68

Differentiate between a client/server network and a peer-to-peer network.

Question 69

Differentiate between analog and digital signals.

Question 70

Describe the four basic elements of most communication systems.

Question 71

The client/server network strategy can handle very large networks efficiently.

Question 72

Intrusion detection systems can recognize signs of a network attack and disable access before an intruder can do damage.

Question 73

With respect to peer-to-peer network,there is an abundant amount of powerful management software that monitors the network activities.

Question 74

Explain how intranets and extranets are useful in supporting communication in an organization?

Question 75

Explain how global positioning systems function.