Deck 7: Telecommunications the Internet and Wireless Technology

Question 1

Mobile search makes up 20% of all Internet searches.

Answer 1

True

Question 2

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

Answer 2

False

Question 3

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

Answer 3

False

Question 4

Wikis allow visitors to change or add to the original posted material.

Question 5

Web 3.0 is an 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.

Question 6

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

Question 7

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

Question 8

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

Question 9

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 10

TCP/IP was developed in the 1960s to enable university scientists to locate other computers on the Internet.

Question 11

Telephone networks are fundamentally different from computer networks.

Question 12

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

Question 13

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 14

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

Question 15

Software-defined networking (SDN)is a new networking approach in which many of these control functions are managed by one central program,which can run on inexpensive commodity servers that are separate from the network devices themselves.

Question 16

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

Question 17

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

Question 18

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

Question 19

A computer network consists of at least three computers.

Question 20

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 21

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 22

An Internet Protocol (IP)address,which currently is a 64-bit number represented by four strings of numbers ranging from 0 to 255 separated by periods.

Question 23

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

A) Wi-Fi
B) LAN
C) WAN
D) MAN

Question 24

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 25

A local area network (LAN)is designed to connect personal computers and other digital devices within a half-mile or 500-metre radius.

Question 26

Which signal types are represented by a continuous waveform?

A) laser
B) optical
C) digital
D) analog

Question 27

The Network Interface layer is responsible for addressing,routing,and packaging data packets called IP datagrams.

Question 28

The Application layer is responsible for providing the Application layer with communication and packet services.

Question 29

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 30

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 31

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 32

The Transport layer enables client application programs to access the other layers and defines the protocols that applications use to exchange data.

Question 33

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 34

The telephone system is an example of a ________ network.

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

Question 35

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 36

A digital signal is a discrete,binary waveform,rather than a continuous waveform.Digital signals communicate information as strings of two discrete states.

Question 37

The Internet layer is responsible for placing packets on and receiving them from the network medium,which could be any networking technology.

Question 38

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 39

A metropolitan area network (MAN)is a network that spans a metropolitan area,usually a city and its major suburbs.Its geographic scope falls between a WAN and a LAN.

Question 40

Client/server computing is a distributed computing model in which some of the processing power is located within small,inexpensive client computers and resides literally on desktops,laptops,or handheld devices.

Question 41

Which organization helps define the overall structure of the Internet?

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

Question 42

WSNs are designed for

A) connecting multiple wireless computing devices.
B) monitoring the physical environment.
C) increasing the reach of Wi-Fi networks.
D) tracking the movement of goods in a supply chain.

Question 43

T1 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 44

Instant messaging is a type of ________ service.

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

Question 45

All of the following are physical components of an RFID system except

A) bar code.
B) antenna.
C) radio transmitters.
D) tags.

Question 46

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 47

In the domain name "http://books.azimuth-interactive.com",which element is the second-level domain?

A) books
B) azimuth-interactive
C) com
D) none; there is no second-level domain in this name

Question 48

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 49

Which digital cellular standard is used widely throughout the world except the United States?

A) GSM
B) CDMA
C) WLAN
D) LTD

Question 50

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

A) FTP
B) World Wide Web
C) newsgroups
D) telnet

Question 51

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) Windows domain network

Question 52

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) MAN
B) Domain-based LAN
C) Peer-to-peer network
D) WAN

Question 53

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 54

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 55

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 56

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 57

Which protocol is the Internet based on?

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

Question 58

The child domain of the root is the

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

Question 59

What service converts IP addresses into more recognizable alphanumeric names?

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

Question 60

The concept of a future Web in which it is commonplace for everyday objects to be connected,controlled or monitored over the Internet is called

A) the Web of things.
B) the Semantic Web.
C) Internet2.
D) a 3-D Web.

Question 61

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

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

Question 62

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 63

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 64

The 802.11 set of standards is known as

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

Question 65

The ______________________________ routes and manages communications on the network and coordinates network resources.

A) Network operating system (NOS)
B) Hubs
C) Switch
D) Router

Question 66

Which of the following is the first generation of cellular systems suitable for watching videos?

A) 2G
B) 2.5G
C) 3G
D) 4G

Question 67

The most appropriate wireless networking standard for creating PANs is

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

Question 68

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

A) tunneling
B) PPP
C) VOIP
D) packet-switching

Question 69

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 70

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 71

________ 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 72

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 73

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 74

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 75

The WiMax standard can transmit up to a distance of approximately

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

Question 76

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 77

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

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

Question 78

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 79

4G networks are also known as ________ networks.

A) GSM
B) CDMA
C) LTD
D) T-Mobile

Question 80

The most common Web server today,controlling 65 percent of the market,is

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