Deck 8: Communications and Networks

Question 1

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

Answer 1

C

Question 2

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

Answer 2

C

Question 3

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

A)Client
B)Server
C)Directory server
D)Host

Answer 3

A

Question 4

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 5

Microwave communication uses high-frequency:

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

Question 6

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)HTTP

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

Cellular services use _____ to provide wireless connectivity to the Internet.

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

Question 9

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 10

The GPS device in an automobile uses which communication channel?

A)Infrared
B)Radio Frequency (RF)
C)Microwave
D)Satellite

Question 11

LTE stands for:

A)Long Term Evolution
B)Light Traffic Evolution
C)Laser Transmission Entity
D)Long Time Entry

Question 12

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 13

The capacity of a communication channel is measured in:

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

Question 14

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

A)Network gateway
B)Node
C)Hub
D)Router

Question 15

Which physical connection is the fastest?

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

Question 16

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 17

____ 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 18

A service that uses existing telephone lines to provide high-speed connections is called:

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

Question 19

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 20

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

A)Broadcast radio
B)Satellite
C)Bluetooth
D)Microwave

Question 21

This type of network strategy uses central computers 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 22

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

Question 23

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

Question 24

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

Question 25

A network topology in which the central node is connected to two or more subordinate nodes that in turn are connected to other sub-ordinate nodes.

A)Star
B)Bus
C)Mesh
D)Tree

Question 26

Telephone lines use coaxial cables.

Question 27

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

Question 28

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

Question 29

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 30

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 31

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

Question 32

Packetization refers to breaking information into small parts.

Question 33

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

Question 34

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

Question 35

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

A)Intranets
B)Extranets
C)Firewalls
D)Proxy servers

Question 36

The most common cabling standard in LANs is called Ethernet.

Question 37

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

Question 38

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

A)Hybrid
B)Hierarchical
C)Mesh
D)Tree

Question 39

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

Question 40

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

Question 41

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

Question 42

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

Question 43

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

Question 44

A(n) _____ area network is a network where the nodes are in close proximity to each other.

Question 45

_____ uses existing telephone lines to provide high-speed connections.

Question 46

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

Question 47

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

Question 48

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

Question 49

A(n) _____ area network is a type of tiny, self-configuring wireless network that works within your immediate surroundings to connect cell phones to headsets, PDAs to other PDAs, etc.

Question 50

_____ cable transmits data as pulses of light through tiny tubes of glass.

Question 51

_____ area networks are countrywide and worldwide networks.

Question 52

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

Question 53

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

Question 54

A LAN set up for a household's personal use is called a(n) _____ network.

Question 55

A(n) _____ network system uses one computer to coordinate and supply services to other nodes on the network.

Question 56

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

Question 57

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

Question 58

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

Question 59

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

Question 60

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

Question 61

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

Question 62

Describe the four basic elements of most communication systems.

Question 63

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

Question 64

Explain the difference between a client/server network and a peer-to-peer network.

Question 65

Discuss how global positioning functions.

Question 66

Most firewalls include special computer called a(n) _____ server to manage communications between the internal networks and the outside world.

Question 67

Explain the difference between analog and digital signals.

Question 68

Compare the high speed connection services: DSL, cable, satellite, and cellular services.

Question 69

What is a WLAN? How does it work?

Question 70

Network _____ describes how a network is arranged and how resources are coordinated and shared, encompassing network topologies and strategies.

Question 71

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(n) _____ network.

Question 72

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

Question 73

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

Question 74

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

Question 75

Describe the four categories of bandwidth.