8: Communications and Networks

The arrangement and configurations of a network is called the network's _____ . A. strategy B. topology C. backbone

B. topology

If you are connecting to the Internet without a physical communication channel then you are using a _____ connection. A. fiber-optic B. wireless C. coaxial D. twisted-pair

B. wireless

IP address stands for _____ Protocol Address. A. infrared B. internal C. internet

C. internet

A _____ enables digital computers to communicate across different media, including telephone wires, cable lines, and radio waves. A. router B. switch C. modem

C. modem

A _____ manages a company's LAN and WAN networks and may be responsible for design, implementation, and maintenance of networks. A. hardware technician B. database designer C. network administrator D. software engineer

C. network administrator

Select all the categories of communication channels. A. TCP/IP B. voiceband C. physical D. wireless

C. physical D. wireless

In order for sending and receiving devices to be successful at data transmission a set of rules, called _____ , must be followed. A. processes B. guidelines C. protocols

C. protocols

Client

Typically a user's computer.

_____ cable consists of pairs of copper wire as in telephone lines and Ethernet cables. A. twisted-pair B. coaxial C. fiber-optic

A. twisted-pair

Select all the types of modems. A. fios B. DSL (uses standard phone lines to create a high-speed connection directly to you phone company's office) C. wireless D. DNS E. cable (uses the same coaxial cable as your TV)

B. DSL (digital subscriber line) C. wireless E. cable

A network _____ is defined as the way of coordinating the sharing of information. A. topology B. strategy

B. strategy e.g. client server and peer-to-peer

Select all the examples of computer communications. A. databases B. texting C. productivity software D. videoconferencing E. e-mail C. electronic commerce

B. texting D. videoconferencing E. e-mail C. electronic commerce

Select the essential features of TCP/IP (transmissions control protocol/Internet protocol) A. compile information when it is received B. read information when it is sent C. break information into small parts D. identify sending and receiving devices

C. break information into small parts D. identify sending and receiving devices

_____ communication uses multiple antennae to send and receive data within relatively small regions to provide communications between cell phones and mobile devices. A. trunk-line B. FM C. cellular D. infrared

C. cellular

_____ cable is a high-frequency transmissions cable with a single solid-copper core. A. twisted-pair B. fiber-optic C. coaxial

C. coaxial

Select the network topologies. A. tree (each device is connected to a central node, either directly or through one or more other devices) B. bus (each device is connected to a common cable called a bus or backbone, and all communications travel along this bus) C. DSL D. star (each device is connected directly to a central network switch - most common) E. ethernet

A. tree B. bus D. star - There is also: 1. a ring network (each device is connected to two other devices, forming a ring and when a message is sent, it is passed around the ring until it reaches the intended destination) 2. mesh network (newest type, does not use a specific physical layout)

Select all the categories of bandwidth. A. high band B. voiceband (used for standard telephone communication) C. broadband (widely used for DSL, cable, and satellite connection to the Internet) D. medium band (used in special leased lines to connect midrange computers and mainframes, as well as to transmit data over long distances) E. small band F. baseband (widely used to connect individual computers that are located closed to one another)

B. voiceband (low bandwidth) C. broadband D. medium band F. baseband

The actual transmission medium that carries a message is called the _____. A. cable B. radio wave C. communication channel D. physical wire

C. communication channel

The sharing of data, programs, and information between two or more computers is called _____ . A. transferring B. processing C. communications

C. communications

_____ systems are electronic systems that transmit data from one location to another. A. messaging B. e-mail C. communications D. e-commerce

C. communications

Wi-Fi is a form of communication that uses _____ signals to transmit data. A. low frequency electrical B. high-frequency infrared C. high-frequency radio

C. high-frequency radio

WiMax stands for Worldwide Interoperability for _____ Access. A. megabyte B. multiple C. microwave

C. microwave

In a _____ network each device is connected to two other devices. A. star B. tree C. ring D. bus

C. ring

The speed at which modems transmit data is called the _____. A. access speed B. modulation rate C. transfer rate

C. transfer rate

Personal computers with telephones modems and dial-up service use _____. A. baseband B. medium band C. voiceband D. broadband

C. voiceband

This type of modem is usually built-in the computer and provides portable high-speed connectivity from anywhere. A. cable B. DSL C. wireless

C. wireless

_____ area networks span distances of a country and are even worldwide. A. metropolitan B. personal C. local D. wide

D. wide

_____ connections provides line of sight communications using light waves to communicate over short distances. A. Wi-Fi B. infrared C. satellite

B. infrared

If you need to share a printer and exchange information with other employees in your office then you should set up a computer _____ . A. client B. network C. DNS

B. network

In a computer network, a _____ interface is an expansion card located within the system unit that connects the computer to a network. A. node B. network C. hub D. host E. switch

B. network

Before messages can be sent across the Internet they must be broken down into smaller parts. This process is called _____ . A. identifications B. packetization

B. packetization

In a _____ network, nodes have equal authority and can act as both clients and servers. A. client/server B. peer-to-peer

B. peer-to-peer (P2P) e.g. BitTorrent file-sharing

A _____ area network is a wireless network that works within a very small area, your immediate surroundings, usually via Bluetooth. A. wide B. personal C. metropolitan

B. personal

In order to control access to a company's intranet and other internal networks, all communications pass through a _____ server. A. directory B. proxy C. network

B. proxy

In a computer network, a ____ is a node that forwards data packets from one network to their destination in another network. A. host B. router C. hub D. switch

B. router

The network architecture describes the network _____ . A. diagrams and rules B. topologies and strategies C. protocols and descriptions

B. topologies and strategies

If you would like to visit a coffee shop and use your laptop to browse the Internet then the coffee shop must have a wireless access point called a _____ . A. hotspot B. hub C. gateway D. server

A. hotspot

An _____ is a private network that connects more than one organization. A. extranet B. intranet

A. extranet

Node

Any device connected to a network.

Bandwidth and protocols are factors that affect how _____ is transmitted.

Data

Select all the advantages of a local network. A. the design of the network is flexible B. they use satellites to reach users over long distances C. people share a single printer equipments connected to the network

A. the design of the network is flexible C. people share a single printer equipments connected to the network

With _____ you are able to connect your cell phone to other devices and information sources almost anywhere. A. conferencing B. connectivity C. productivity

B. connectivity

The rules and procedures that coordinate the sending and receiving devices by precisely defining how the message will be sent across the communications channels are called _____ specifications. A. messaging B. data transmissions C. installation

B. data transmissions

______ is the most common standard in which the nodes of a LAN can be connected to one another and ways in which their communications are connected. A. ultranet B. ethernet C. LocalNet

B. ethernet

Network Administrator

A specialist responsible for network operations.

GPS stands for _____ positioning system. A. grand B. global C. giant

B. global

Select all the networks security technologies. A. intranets B. extranets C. virtual private networks (create a secure private connection between a remote user and an organization's internal network) D. intrusion detection systems (works with firewalls to protect an organization's network) E. firewalls (hardware and software that control access to a company's intranet and other internal networks)

A. intranets C. virtual private networks (VPN) D. intrusion detection systems (IDS)

Different types of networks are determined by the geographical area they serve and include all of the following: A. local area network B. wide area network C. county area network D. metropolitan area network

A. local area network B. wide area network D. metropolitan area network

A _____ network does not use a specific physical layout but each node is connected to at least one other node and forms a pattern like a net. A. mesh B. tree C. star

A. mesh

To convert digital signals to analog signals, you need a _____. A. modem B. DVD C. router

A. modem

Select all the examples of high-speed connection services. A. satellite B. cellular C. cable D. dial-up (using existing telephones and telephone modems to connect to the internet)

A. satellite B. cellular C. cable

Select all the basic elements of a communications system. A. sending and receiving devices B. scanning and archiving devices C. communications channel D. connection devices E. data transmission specifications

A. sending and receiving devices C. communications channel D. connection devices E. data transmission specifications

Select all the advantages of a client/server networks. A. ability to handle very large networks efficiently B. cost of installation C. cost of maintenance D. availability of powerful network management software

A. ability to handle very large networks efficiently D. availability of powerful network management software

_____ DSL is one of the most widely used types of DSL. A. asymmetric B. analog C. optical D. wireless

A. asymmetric

Select all the examples of wireless connections. A. cellular B. bluetooth C. twisted-pair D. coaxial D. Wi-Fi

A. cellular B. bluetooth D. Wi-Fi e.g. microwaves, WiMax (worldwide interoperability for microwave access), satellite

In a computer network, a _____ , typically a user's computer, is a node that requests and uses resources available from other nodes. A. client B. switch C. hub

A. client

In a _____ network, central computers coordinate and supply services to other nodes on the network. A. client/server B. peer-to-peer

A. client/server

A _____ modem created a high speed connection directly to the phone company using the computer's USB or Ethernet port. A. digital subscriber line B. cable C. wireless

A. digital subscriber line

Select all the advantages of peer-to-peer network. A. easy to set up B. abundance of management C. inexpensive to set up D. easy to use E. abundance of security controls

A. easy to set up C. inexpensive to set up D. easy to use

_____ cable transmits data as pulses of light through tiny tubes of glass. A. fiber-optic B. coaxial C. twisted-pair

A. fiber-optic

Select all the examples of server operating systems. A. Windows XP B. Solaris C. Mac OS X Server D. Linux E. Windows Server

B. Solaris C. Mac OS X Server D. Linux E. Windows Server

_____ is a measurement of the capacity of the communication channel. A. channel capacity B. bandwidth C. channel width D. communication width

B. bandwidth

Using this bandwidth several users can use a single connections at the same time. A. voiceband B. broadband C. medium band D. baseband

B. broadband

This type of modem uses coaxial cable to create a high-speed connection using the computer's USB or Ethernet port. A. DSL B. cable C. wireless

B. cable

Different types of communication _____ , wired or wireless, allow different types of network to be formed. A. gateways B. channels C. firewalls

B. channels

Select all the network strategies. A. star B. client/server C. peer-to-peer D. tree

B. client/server C. peer-to-peer

Without computer _____, we would not have e-mail or e-commerce. A. caching B. communications C. transferring

B. communications