Chapter 7 - Multiple Choice

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

a

All network components connect to a single hub in a _________ topology a) star b) bus c) domain d) peer-to-peer

a

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

a

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

a

Instant messaging is a type of _______ service a) chat b) cellular c) e-mail d) wireless

a

The 802.11 set of standards for wireless LANs is known as a) Wi-Fi b) WiMax c) Bluetooth d) RFID

a

The child domain of the root is the a) top-level domain b) second-level domain c) host name d) domain extension

a

The most common Ethernet topology is a) bus b) star c) ring d) mesh

a

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

a

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

a

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

a

Which of the following Internet connection types offers the greatest bandwidth? a) T3 b) DSL c) cable d) T1

a

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

a

Which of the following would you be most likely to use RFID technology for? a) tracking inventory b) enabling CRM systems c) lowering network costs d) enabling client communication

a

Which protocol is the Internet based on? a) TCP/IP b) FTP c) packet-switching d) HTTP

a

__________ work by using radio waves to communicate with radio antennas placed within adjacent geographic areas a) cell phones b) microwaves c) satellites d) WANs

a

A network that spans a city, and sometimes its major suburbs as well, is called a a) CAN b) MAN c) LAN d) WAN

b

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

b

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 in a loop

b

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

b

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

b

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

b

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

b

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

b

Web browser software requests Web pages from the Internet using which protocol? a) URL b) HTTP c) DNS d) HTML

b

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

b

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

b

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

c

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

c

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

c

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

c

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

c

The WiMax standard can transmit up to a distance of approximately a) 30 meters b) 500 meters c) 30 miles d) 5 miles

c

The most common Web server today, controlling 54 percent of the market, is a) Microsoft IIS b) WebSTAR c) Apache HTTP Server d) Netscape Server

c

The next evolution in wireless communication is a) 3G networks b) 2.5G networks c) WiMax d) RFID

c

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

c

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

c

Which of the following is /not/ an advantage of using VOIP? a) VOIP can reduce a firm's communication costs by 20 to 30 percent b) It allows e-mail and voice mail to be combined into a single directory c) It enables the creation of two distinct networks for voice and data d) It allows net phones to be added to a network without rewiring or reconfiguring the network

c

Which of the following is /not/ one of the four defining features of Web 2.0? a) interactivity b) real-time user control c) cloud computing d) social participation

c

Which of the following statements is true? a) GSM is the primary U.S. digital cellular standard b) CDMA's strength is in its international roaming capabilities c) CDMA randomly assigns users to a range of frequencies over time d) GSM was developed by the military during World War II

c

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

c

A network that covers broad 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

d

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

d

The telephone system is an example of a _________ network. a) peer-to-peer b) wireless c) packet-switched d) circuit-switched

d

Which of the following distinguishes wikis from blogs? a) Wikis allow users to add content, whereas blogs are created by a single person b) Blogs are personal publishing tools, while Wikis have business uses c) Wikis require some knowledge of Web programming, whereas blogs are designed to be created by people without HTML skills of any kind d) Wikis allow users to modify content created by other users, whereas blogs only allow comments to posted material

d

Which of the following standards is most appropriate for creating a PAN? a) WiMax b) IEEE 802.11b c) WiFi d) Bluetooth

d

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

d

Which organization helps define the overall structure of the Internet? a) none (no one "owns" the Internet) b) W3C c) ICANN d) IAB

d

Which signal types are represented by a continuous waveform? a) laser b) optical c) digital d) analog

d

________ 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

d