Deck 8: Communications and Networks

Question 1

The capacity of a communication channel is measured in _______.

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

Answer 1

A

Question 2

LTE stands for _______.

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

Answer 2

A

Question 3

The GPS device in an automobile uses which communication channel?

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

Answer 3

D

Question 4

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 5

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 6

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 7

Microwave communication uses high-frequency _______.

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

Question 8

Which physical connection is the fastest?

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

Question 9

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 10

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 11

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 12

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 13

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

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

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

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 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

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

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

Question 18

_______ 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 19

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

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

Question 20

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

A) Voiceband
B) Mediumband
C) Broadband
D) Baseband

Question 21

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

Question 22

The most common standard in LANs is called Ethernet.

Question 23

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

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

Question 24

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

Question 25

Telephone lines use coaxial cables.

Question 26

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 27

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

Question 28

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

Question 29

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

Question 30

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

Question 31

Packetization refers to breaking information into small parts.

Question 32

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

Question 33

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

Question 34

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 35

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 36

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

Question 37

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

Question 38

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

Question 39

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 40

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

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

Question 41

A(n) _______ network system uses central servers to coordinate and supply services to other nodes on the network.

Question 42

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

Question 43

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

Question 44

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

Question 45

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

Question 46

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, and so on.

Question 47

_______ area networks are countrywide and worldwide networks.

Question 48

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

Question 49

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

Question 50

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

Question 51

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

Question 52

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

Question 53

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

Question 54

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

Question 55

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

Question 56

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

Question 57

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

Question 58

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

Question 59

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

Question 60

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

Question 61

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

Question 62

What is a WLAN? How does it work?

Question 63

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

Question 64

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 65

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

Question 66

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

Question 67

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

Question 68

Explain how global positioning functions.

Question 69

Describe the four basic elements of most communication systems.

Question 70

Differentiate between analog and digital signals.

Question 71

Describe the four categories of bandwidth.

Question 72

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

Question 73

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

Question 74

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 75

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