Deck 6: Telecommunications, the Internet, and Wireless Technology

Question 1

An NOS must reside on a dedicated server computer in order to manage a network.

Answer 1

False

Question 2

Web 3.0 is a collaborative effort to add a layer of meaning to the existing Web in order to reduce the amount of human involvement in searching for and processing Web information.

Answer 2

True

Question 3

Two computers using TCP/IP can communicate even if they are based on different hardware and software platforms.

Answer 3

True

Question 4

Telephone networks are fundamentally different from computer networks.

Question 5

Mobile search makes up 15% of all Internet searches.

Question 6

Central large mainframe computing has largely replaced client/server computing.

Question 7

Coaxial cable is similar to that used for cable television and consists of thickly insulated copper wire.

Question 8

In a ring topology,one station transmits signals,which travel in both directions along a single transmission segment.

Question 9

The Domain Name System (DNS)converts IP addresses to domain names.

Question 10

To create a computer network,you must have at least two computers.

Question 11

TCP/IP was developed in the 1960s to enable university scientists to transmit data from computer to computer.

Question 12

RFID technology is being gradually replaced by less costly technologies such as WSNs.

Question 13

Circuit switching makes much more efficient use of the communications capacity of a network than does packet switching.

Question 14

Fiber-optic cable is more expensive and harder to install than wire media.

Question 15

In a client/server network,a network server provides every connected client with an address so it can be found by others on the network.

Question 16

A hub is a networking device that connects network components and is used to filter and forward data to specified destinations on the network.

Question 17

Increasingly,voice,video,and data communications are all based on Internet technology.

Question 18

VoIP technology delivers video information in digital form using packet switching.

Question 19

In a large company today,you will often find an infrastructure that includes hundreds of small LANs linked to each other as well as to corporate-wide networks.

Question 20

The number of cycles per second that can be sent through any telecommunications medium is measured in kilobytes.

Question 21

In a bus network:

A)signals are broadcast to the next station.
B)signals are broadcast in both directions to the entire network.
C)multiple hubs are organized in a hierarchy.
D)messages pass from computer to computer in a loop.

Question 22

What are the four layers of the TCP/IP reference model?

A)Physical,application,transport,and network interface
B)Physical,application,Internet,and network interface
C)Application,transport,Internet,and network interface
D)Application,hardware,Internet,and network interface

Question 23

Which type of network treats all processors equally,and allows peripheral devices to be shared without going to a separate server?

A)Peer-to-peer
B)Wireless
C)LAN
D)Ring

Question 24

In a telecommunications network architecture,a protocol is:

A)a device that handles the switching of voice and data in a local area network.
B)a standard set of rules and procedures for control of communications in a network.
C)a communications service for microcomputer users.
D)the main computer in a telecommunications network.

Question 25

The telephone system is an example of a ________ network.

A)peer-to-peer
B)wireless
C)packet-switched
D)circuit-switched

Question 26

Bandwidth is the:

A)number of frequencies that can be broadcast through a medium.
B)number of cycles per second that can be sent through a medium.
C)difference between the highest and lowest frequencies that can be accommodated on a single channel.
D)total number of bytes that can be sent through a medium per second.

Question 27

________ work(s)by using radio waves to communicate with radio antennas placed within adjacent geographic areas.

A)Cell phones
B)Microwaves
C)Satellites
D)WANs

Question 28

The most common Ethernet topology is:

A)bus.
B)star.
C)ring.
D)mesh.

Question 29

Which of the following is not a characteristic of packet switching?

A)Packets travel independently of each other.
B)Packets are routed through many different paths.
C)Packet switching requires point-to-point circuits.
D)Packets include data for checking transmission errors.

Question 30

Which signal types are represented by a continuous waveform?

A)Laser
B)Optical
C)Digital
D)Analog

Question 31

All network components connect to a single hub in a ________ topology.

A)star
B)bus
C)domain
D)peer-to-peer

Question 32

To use the analog telephone system for sending digital data,you must also use:

A)a modem.
B)a router.
C)DSL.
D)twisted wire.

Question 33

Which type of network is used to connect digital devices within a half-mile or 500-meter radius?

A)Microwave
B)LAN
C)WAN
D)MAN

Question 34

A network that covers entire geographical regions is most commonly referred to as a(n):

A)local area network.
B)intranet.
C)peer-to-peer network.
D)wide area network.

Question 35

The Internet is based on which three key technologies?

A)TCP/IP,HTML,and HTTP
B)TCP/IP,HTTP,and packet switching
C)Client/server computing,packet switching,and the development of communications standards for linking networks and computers
D)Client/server computing,packet switching,and HTTP

Question 36

The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n):

A)hub.
B)switch.
C)router.
D)NIC.

Question 37

The method of slicing digital messages into parcels,transmitting them along different communication paths,and reassembling them at their destinations is called:

A)multiplexing.
B)packet switching.
C)packet routing.
D)ATM.

Question 38

Which type of network would be most appropriate for a business that comprised three employees and a manager located in the same office space,whose primary need is to share documents?

A)Wireless network in infrastructure mode
B)Domain-based LAN
C)Peer-to-peer network
D)Campus area network

Question 39

In TCP/IP,IP is responsible for:

A)disassembling and reassembling of packets during transmission.
B)establishing an Internet connection between two computers.
C)moving packets over the network.
D)sequencing the transfer of packets.

Question 40

A network that spans a city,and sometimes its major suburbs as well,is called a:

A)CAN.
B)MAN.
C)LAN.
D)WAN.

Question 41

In the domain name "http://myspace.blogging.com",what are the root,top-level,second-level,and third-level domains,respectively?

A) "http://",myspace,blogging,com
B)"http://",com,blogging,myspace
C)")",com,blogging,myspace
D)")",myspace,blogging,com

Question 42

Which of the following statements about RFID is not true?

A)RFIDs transmit only over a short range.
B)RFIDs use an antenna to transmit data.
C)Microchips embedded in RFIDs are used to store data.
D)RFIDs require line-of-sight contact to be read.

Question 43

Instant messaging is a type of ________ service.

A)chat
B)cellular
C)e-mail
D)wireless

Question 44

Web browser software requests Web pages from the Internet using which protocol?

A)URL
B)HTTP
C)DNS
D)HTML

Question 45

The process of employing techniques to help a Web site achieve a higher ranking with the major search engines is called:

A)VPN.
B)IAB.
C)SEM.
D)SEO.

Question 46

Which organization helps define the overall structure of the Internet?

A)None (no one "owns" the Internet)
B)W3C
C)ICANN
D)IAB

Question 47

T lines:

A)operate over existing telephone lines to carry voice,data,and video.
B)operate over coaxial lines to deliver Internet access.
C)are high-speed,leased data lines providing guaranteed service levels.
D)have up to twenty-four 64-Kbps channels.

Question 48

________ integrate(s)disparate channels for voice communications,data communications,instant messaging,e-mail,and electronic conferencing into a single experience.

A)Wireless networks
B)Intranets
C)Virtual private networks
D)Unified communications

Question 49

IPv6 is being developed in order to:

A)update the packet transmission protocols for higher bandwidth.
B)create more IP addresses.
C)allow for different levels of service.
D)support Internet2.

Question 50

The child domain of the root is the:

A)top-level domain.
B)second-level domain.
C)host name.
D)domain extension.

Question 51

Digital subscriber lines:

A)operate over existing telephone lines to carry voice,data,and video.
B)operate over coaxial lines to deliver Internet access.
C)are very-high-speed data lines typically leased from long-distance telephone companies.
D)have up to twenty-four 64-Kbps channels.

Question 52

The most common Web server today,controlling 59 percent of the market,is:

A)Microsoft IIS.
B)WebSTAR
C)Apache HTTP Server.
D)Netscape Server.

Question 53

What technology allows people to have content pulled from Web sites and fed automatically to their computers?

A)FTP
B)RSS
C)HTTP
D)Bluetooth

Question 54

Which protocol is the Internet based on?

A)TCP/IP
B)FTP
C)packet-switching
D)HTTP

Question 55

Together,a protocol prefix,a domain name,a directory path,and a document name,are called a(n):

A)uniform resource locator.
B)IP address.
C)third level domain.
D)root domain.

Question 56

A VPN:

A)is an encrypted private network configured within a public network.
B)is more expensive than a dedicated network.
C)provides secure,encrypted communications using Telnet.
D)is an Internet-based service for delivering voice communications.

Question 57

Which of the following statements is not true about search engines?

A)They are arguably the Internet's "killer app."
B)They have solved the problem of how users instantly find information on the Internet.
C)They are monetized almost exclusively by search engine marketing.
D)There are hundreds of search engines vying for user attention,with no clear leader having yet emerged.

Question 58

Which of the following services enables logging on to one computer system and working on another?

A)FTP
B)LISTSERV
C)Telnet
D)World Wide Web

Question 59

What service converts IP addresses into more recognizable alphanumeric names?

A)HTML
B)DNS
C)IP
D)HTTP

Question 60

The total amount of digital information that can be transmitted through any telecommunications medium is measured in:

A)bps.
B)Hertz.
C)baud.
D)gigaflops.

Question 61

A ________ is special software that routes and manages communications on the network and coordinates networks resources.

A)switch
B)firewall
C)server
D)network operating system/NOS

Question 62

The most appropriate wireless networking standard for creating PANs is:

A)I-mode.
B)IEEE 802.11b.
C)WiFi.
D)Bluetooth.

Question 63

An analog signal is a discrete,binary waveform that transmits data coded into two discrete states such as 1-bits and 0-bits.

Question 64

The 802.11 set of standards is known as:

A)WLAN.
B)WSN.
C)Wi-Fi.
D)WiMax.

Question 65

Bluetooth can be used to link up to ________ devices within a 10-meter area using low-power,radio-based communication.

A)four
B)six
C)eight
D)ten

Question 66

A LAN would be used to connect all of the following except:

A)all of the computers in a large building.
B)all of the devices within a 10-meter area.
C)all of the computers in a city.
D)all of the computers in a small office.

Question 67

Prior to the development of ________,computer networks used leased,dedicated telephone circuits to communicate with other computers in remote locations.

A)packet switching
B)routers
C)servers
D)coaxial cable

Question 68

Today,most Americans connect to the Internet through broadband connections at speeds up to 15 Mbps.

Question 69

Which of the following is the first generation of cellular systems suitable for wireless broadband Internet access?

A)2G
B)2)5G
C)3G
D)4G

Question 70

Passive RFID tags:

A)have their own power source.
B)have a range of several feet.
C)enable data to be rewritten and modified.
D)are used in automated toll-collection systems.

Question 71

The WiMax standard can transmit up to a distance of approximately:

A)30 meters.
B)500 meters.
C)30 miles.
D)5 miles.

Question 72

The trunklines of the Internet are typically owned by network service providers.

Question 73

One or more access points positioned on a ceiling,wall,or other strategic spot in a public place to provide maximum wireless coverage for a specific area are referred to as:

A)touch points.
B)hotspots.
C)hot points.
D)wireless hubs.

Question 74

A router is a device that forwards packets of data through different networks,ensuring that the data gets to the right address.

Question 75

________ is the manner in which the physical components of a LAN are connected together.

A)Network topology
B)Network architecture
C)Network infrastructure
D)A network's platform

Question 76

An ISP is a commercial organization that owns a region of transcontinental high-speed backbone networks carrying the bulk of Internet traffic.

Question 77

Which process is used to protect transmitted data in a VPN?

A)Tunneling
B)PPP
C)VOIP
D)Packet switching

Question 78

Based on your reading of the examples in the chapter,what would be the best use of RFID for a business?

A)Logging transactions
B)Managing the supply chain
C)Lowering network costs
D)Enabling client communication

Question 79

A Web server is a dedicated computer that delivers Web pagers to client computers.

Question 80

A(n)________ is a box consisting of a radio receiver/transmitter and antennas that links to a wired network,router,or hub.

A)hotspot
B)access point
C)server
D)wireless router