Quiz 14: Module E: Network Basics

A(n)_____ is two or more computers connected so that they can communicate with each other and share information,software,peripheral devices,and/or processing power. A)OLED B)computer system C)network D)DS3

Which of the following is a basic principle that applies to all networks,large or small? A)At least one computer on a network must have a network interface that provides the doorway for all computers for information exchange. B)One of the computers on the network must act as a connecting device that ties the other computers together. C)There must be communications media like cables or radio waves connecting network hardware devices. D)At least one computer on the network must have software supporting the movement of information in and out of the network.

Which of the following is NOT typically a component of a home network? A)An Ethernet network card for each computer on the network B)Network cables or wireless devices to transmit signals C)A router that passes messages and information to each computer D)A computer dedicated to being a database server

A _____ is an expansion card for a desktop computer or a PC card for a notebook computer that connects your computer to a network and provides the doorway for information to flow in and out. A)network interface card B)wireless tether C)storage card D)flash memory card

Which of the following is the most common type of a network interface card (NIC)? A)WAP B)Cat 5 C)Broadband router D)Ethernet card

An Ethernet card has a(n)_____ jack into which a network or crossover cable can be plugged. A)BS 6312 B)FireWire C)RJ-45 D)USB

Which of the following allows you to plug your computer straight into another computer or printer? A)Coaxial cable B)Cat2 cable C)Crossover cable D)Straight through cable

The _____ cable is a better-constructed version of the phone twisted-pair cable. A)USB B)crossover C)Cat 5 D)optical fiber

Which of the following devices allows a computer to use radio waves to access a network? A)WAP B)Cat 5 C)Optical fiber D)DSL modem

Which of the following devices transmits and receives a bidirectional flow of information through its antenna? A)Cat 5 B)Dielectric wireless receiver C)Data server D)Wireless access point

Can your wireless access point connect to a network the same way wired computers do? A)Yes,it connects with a cable to the hub or switch B)Yes,as long as the network hub or switch has an Ethernet card C)No,not unless the network supports dedicated high speed lines such as T1 or DS3 D)No,it connects through wireless media

If you wanted to wirelessly connect more than one computer to share a cable Internet service in your home,what would you need? A)A local home-based server B)Crossover cables C)A broadband router D)A multilayer switch

What Windows option do you need to activate to make the files on your computer available to the other computers on your home network? A)VPN B)File-sharing C)Windows firewall D)Peer-to-peer networking

What network device connects computers together and passes messages by repeating each computer's transmissions only to the intended recipients? A)Modem B)Broadband router C)Switch D)Hub

What does a switch enable a network to do? A)Listen to each other's transmissions B)Repeat messages to other computers so that the messages are not lost C)Allow computers to have different conversations at the same time D)Create direct links between separate networks or subnets

Which network device sends information privately over the network? A)Hub B)Switch C)Router D)Virtual connector

Which network device connects together separate networks of computers? A)Hubs B)Switches C)Routers D)Virtual connectors

Which network device passes network traffic between smaller subnets of a larger network? A)A modem B)WAP C)A switch D)A router

While connecting to a larger network,in addition to a router,what network device do you need to plug a computer into? A)A jammer B)A repeater C)A switch D)A firewall

Which of the following is true of home networks and network components? A)They do not require a switch. B)They require at least two routers. C)They have both a router and a switch. D)They require a router only if they are wireless.

Before you can connect a computer with a router to a network,what must you do? A)Connect the router to a hub. B)Give each computer the router's address. C)Give the router the address of each computer on the subnets. D)Replace all Cat 5 cables with crossover cables.

Which type of network covers a contiguous geographic area,such as a group of buildings in close proximity to each other? A)MAN B)LAN C)WAN D)VPN

Which type of network covers a large geographic distance,such as a state,a country,or even the entire world? A)WAN B)MAN C)VPN D)LAN

Which type of network requires an organization to use some sort of commercial communications provider? A)WLAN B)WAN C)LAN D)Intranet

_____ is a set of connected networks all within the same city or metropolitan area,but not in immediate proximity to each other. A)LAN B)MAN C)WAN D)VPN

What is the difference between the terms internet (lower case i)and Internet (upper case I)? A)There is no difference,the words are used interchangeably. B)The term internet is a generic term for a network of networks;Internet refers to the largest internet. C)The term internet refers to a network external to an organization;Internet refers to internal networks. D)The term internet refers to a network connected by different organizations;the term Internet refers to the network connected by different individuals.

When a local router on the Internet does not recognize a sender of a message as being attached to one of its LAN,MAN,or WAN connections,it sends the message over the connection to its ____. A)main server B)Internet service provider C)intrusion detection system D)virtual private network

Computers and routers refer to each other using ____. A)VPN B)router IDs C)network sites D)IP addresses

Where would a computer look up the site location for a computer it needs to send information to? A)Yellow Pages B)VPN directory assistance C)POP3 server D)Domain Name System

Which of the following terms refers to the capacity of a communications medium to transfer information in a given amount of time? A)Bandwidth B)Transmission size C)Routing capacity D)Communication speed

A _____ is the smallest possible amount of data. A)cache B)byte C)bit D)gigabyte

A single symbol or letter of text is stored using _____ byte(s). A)eight B)one C)four D)six

How many bits would be required to store the word "bit"? A)One B)Three C)Sixteen D)Twenty-four

How is bandwidth measured? A)Revolutions per minute (RPM) B)Megahertz (MHz) C)Bytes per second (BPS) D)Bits per second (BPS)

How long would it take to transfer a document containing 125,000 characters using a communications medium with a bandwidth of 2Mbps? A)Sixty seconds B)Thirty seconds C)Half a second D)One second

What type of Internet connection uses an ordinary telephone line and a modem? A)DSL B)Cable modem C)Dedicated high-speed line D)Dial-up circuit

Which of the following communications medium is NOT classified as a broadband connection? A)Dial-up B)DSL C)Cable modem D)Dedicated lines

What communications device connects your computer to a phone line so that you can access another computer or network? A)Conversion box B)Modem C)Transmitter D)Repeater

What does a modem do? A)Transmits infrared signals over a communication channel B)Transmits,receives,and converts analog signals into digital signals C)Receives and boosts (strengthens)radio signals D)Enables private transmissions by encrypting your information before sending it to the Internet

Which type of high-speed Internet circuit is generally used by businesses? A)T1 and DS3 B)Cable C)Dial-up D)DSL

Which type of high-speed Internet connection works in a fashion similar to dial-up modems but allows you to use the telephone at the same time you are using the Internet? A)Cable modem B)Satellite modem C)DSL D)T1 or DS3 lines

Which type of Internet connection is limited to the distance between you and your phone company,generally about 3 miles? A)Dial-up B)DSL C)Cable D)Satellite

Which type of Internet connection slows down when more customers or computers are using it? A)Dial-up B)DSL C)Cable D)Dedicated high-speed lines

Which network technology allows you to send voice calls over the Internet and avoid toll charges? A)Wireless access point B)Voice over IP C)Voice access point D)Bluetooth

Which type of media transmits information over a closed,connected path? A)Wireless encrypted communications media B)Wired communications media C)Wireless unsecured communications media D)Satellite transmission media

Which of the following is an example of a wired communications medium? A)Infrared B)Microwave C)Optical fiber D)Satellite

Which of the following is an example of a wireless communications medium? A)Twisted-pair cable B)Infrared C)Coaxial cable D)Optical fiber

What type of twisted-pair cabling provides a slow,reliable path for information at up to 10 Mbps? A)Cat 3 B)Cat 2 C)Cat 1 D)Cat 1a

Which of the following is the most widely used category of twisted-pair cabling systems for data transfer in today's LANs? A)Cat 5 B)Cat 4 C)Cat 3 D)Cat 3b

Which of the following types of cabling has one central wire surrounded by insulation,a metallic shield,and a final case of insulating material? A)Cat 1 B)Optical fiber C)Twisted-pair D)Coax

Which of the following communications media uses a very thin and flexible glass or plastic fiber through which pulses of light travel? A)Cat 5 B)Optical fiber C)Twisted-pair D)Coax

Which of the following communications media is a type of radio transmission? A)Cat 3 B)Optical fiber C)Infrared D)Microwave

Which of the following communications devices receives a radio signal,strengthens it,and then sends it on? A)Wi-Fi transmitter B)Router C)Repeater D)Bridge mode

What are repeaters that are located in space called? A)Wi-Fi hotspots B)Remote repeaters C)Cat 5 D)Communication satellites

_____ means that information can be obtained only by those authorized to access it. A)Confidentiality B)Authenticity C)Integrity D)Availability

Which of the following is a threat posed to the authenticity of information available on a network? A)Network transmissions that can be captured or monitored by unauthorized individuals B)Web sites registered at names that are common misspellings of popular sites C)Network transmissions that can be forged or taken over by unauthorized individuals D)Poorly written server software that stops working when presented with unusual inputs

A network failure which makes an e-commerce Web site inaccessible is a threat to ____. A)confidentiality B)authenticity C)integrity D)availability

What software and/or hardware device protects a computer or a network from intruders? A)Router B)Firewall C)Switch D)Cookie monitor

Which of the following types of network security applications watches the current network traffic,matching it against lists with characteristics of known attacks? A)Firewall B)Intrusion prevention system C)Real-time adaptive security D)Proxy server

_____ is a security technology that encrypts each network conversation-between one network client and one server-individually. A)Secure sockets layer B)Virtual private network C)Firewall D)Modulator-demodulator

A(n)_____ uses encryption to protect the confidentiality of all network transmissions between two endpoints. A)SSL B)TLS C)VAN D)VPN

Which of the following is NOT a type of malware? A)Firewall B)Worm C)Virus D)Spyware

In the context of malware,_____ are programs designed to be controlled by an attacker to perform unauthorized work over a period of time. A)bots B)unauthorized servers C)routers D)repeaters

A computer network consists of a minimum of five computers connected to one another.

A network interface card (NIC)is an expansion card that connects your computer to a network and provides the doorway for information to flow in and out.

An Ethernet card uses a standard telephone jack to connect the computer to a network.

A wireless access point is a device that allows computers to access a wired network using radio waves.

A direct link with a satellite is required for setting up a wireless network.

In a small office,a broadband router is often used to connect several computers to a DSL network.

Information transferred over switches is generally public unless specified by the host computer.

A switch is a device that connects multiple computers into a network in which multiple communications links can be in operation simultaneously.

A switch can have hundred or more ports to connect computers.

Home routers that run your Internet connection usually incorporate both a router and a switch in the same box.

A WAN covers a large geographic distance,such as a state,a country,or even the entire world.

A MAN covers a contiguous geographic area,such as an office,building,or a group of buildings in close proximity to each other.

Bandwidth refers to the capacity,or the amount of information,that can be transferred through a communications line in a given time.

A broadband connection is a high-capacity telecommunications pipeline capable of providing high-speed Internet service.

A dial-up Internet connection is considered a broadband connection with high bandwidth.

A telephone modem is a device that connects your computer to your phone line so that you can access another computer or network.

A DS3 is a dedicated high-speed line which runs on a separate circuit and is generally used for business connections.

You cannot talk on the telephone and surf the Internet simultaneously while using a DSL connection.

A modem is not required while using a cable Internet connection.

Wireless communications media transmits information over a closed,connected path.

Coaxial cable has one central wire surrounded by insulation,a metallic shield,and a final case of insulating material.

Infrared is a wireless communications medium that uses light waves to transmit signals or information.

Infrared communications can penetrate walls,buildings,and other structures.

Bluetooth is a standard for transmitting information in the form of long-range radio waves.

Wi-Fi is a wireless communication technology that uses red light to send and receive information.

A repeater is a device that receives a radio signal,strengthens it,and sends it on.

A firewall consists of both software and/or hardware and protects a computer or network from intruders.

A virtual private network establishes a dedicated network connection between two or more networks.

A virtual private network uses encryption to protect the confidentiality of all network transmissions between two endpoints.

A padlock icon on a Web site tells you that information on the Web site is being routed through a VPN.

A worm is a type of virus.

A _____ consists of two or more computers connected so that they can communicate with each other and share information,software,peripheral devices,and/or processing power.

A _____ must be installed in each computer on the network in order to connect it to a network.

The most common type of network interface card is a(n)____.

A _____ cable is a better-constructed version of the phone twisted-pair cable.

A _____ has a transmitter and a receiver for the bidirectional flow of information.

A _____ is a network device that connects computers and passes messages by repeating each computer's transmissions only to the intended recipient,not to all the connected computers.

A _____ is a device that passes network traffic between smaller subnetworks of a larger network.

A network that covers a contiguous geographic area is called a ____.

A network that covers a large geographic area where buildings are not in immediate proximity to each other is called a ____.

A network that covers an urban area is called a ____.

____,or capacity of the communications medium,is the amount of information that a communications medium can transfer in a given amount of time.

A _____ connection is a high-capacity telecommunications pipeline capable of providing high-speed Internet service.

_____ is a high-speed Internet connection using phone lines,which allows you to use your phone for voice communications at the same time.

_____ allows you to access the Internet through your cable connection.

_____ allows you to send voice communications over the Internet and avoid the toll charges that you would normally receive from your long-distance carrier.

A _____ transmits information over a closed,connected path.

A _____ is a bundle of copper wires used for transmitting voice or data communications.

A _____ has one central wire surrounded by insulation,a metallic shield,and a final case of insulating material.

_____ uses a very thin glass or plastic fiber through which pulses of light travel.

_____ communications radiate information into the air,either very narrowly beamed or in many directions.

_____ uses red light to send and receive information.

A typical speed of an infrared connection is ____.

Wi-Fi (wireless fidelity,802.11 b or g)uses _____ transmissions.

_____ is a short-distance wireless communication that is omnidirectional or all directions.

_____ are used to send large amounts of data to remote locations especially if there are a number of receiving sites.

A(n)_____ is a microwave repeater located in space.

Restricting payroll information to only authorized payroll employees is ensuring _____ of the information.

Fraudulent e-mail messages claiming to be from your bank is an example of a threat to ____.

A(n)_____ can protect availability of a network and prevent denial-of-service attacks.

A virtual private network uses _____ to establish a secure channel for transmitting data.

Spyware,viruses,and worms are examples of ____.