CH 7

4G networks use which standards? A) LTE and WiMax B) T-Mobile and AT&T C) GSM and LTD D) CDMA and PAN E) LTE and LTD

A

Bluetooth can be used to link up to ________ devices within a 10-meter area using low-power, radio-based communication. A) eight B) five C) twenty D) two E) fifteen

A

In TCP/IP, IP is responsible for A) disassembling and reassembling of packets during transmission. B) moving packets over the network. C) establishing an Internet connection between two computers. D) breaking messages down into packets. E) sequencing the transfer of packets.

A

T1 lines A) are high-speed, leased data lines providing guaranteed service levels. B) operate over coaxial lines to deliver Internet access. C) have up to twenty-four 64-Kbps channels. D) operate over existing telephone lines to carry voice, data, and video. E) do not provide guaranteed service levels, but simply "best effort."

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. E) RPMs

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. E) TCP/IP.

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) child domain. D) root domain. E) third-level domain.

A

Web sites that enable users to share information, collaborate, and create new services and content are called ________ sites. A) second generation B) mashup C) first generation D) third generation E) new wave

A

Which organization helps define the overall structure of the Internet? A) IAB B) W3C C) none (no one "owns" the Internet) D) The Department of Commerce (U.S.) E) ICANN

A

Which signal types are represented by a continuous waveform? A) analog B) RFID C) laser D) digital E) optical

A

________ integrate disparate channels for voice communications, data communications, instant messaging, e-mail, and electronic conferencing into a single experience. A) Unified communications B) Modems C) Virtual private networks D) Wireless networks E) Intranets

A

________ monetizes the value of the data stored by search engines. A) Search engine marketing B) TCP/IP C) WiMax D) Wireless sensor networks E) RSS

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. E) WSN.

B

In the domain name "http://books.azimuth-interactive.com", which element is the second-level domain? A) none; there is no second-level domain in this name B) azimuth-interactive C) books.azimuth-interactive D) com E) books

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) wireless hubs. B) hotspots. C) touch points. D) hot points. E) netcenters.

B

The Internet is based on which three key technologies? A) TCP/IP, HTML, and HTTP B) client/server computing, packet switching, and the development of communications standards for linking networks and computers C) TCP/IP, HTTP, and packet switching D) client/server computing, packet switching, and HTTP E) e-mail, instant messaging, and newsgroups

B

The WiMax standard can transmit up to a distance of approximately A) 70 miles. B) 30 miles. C) 500 meters. D) 5 miles. E) 30 meters.

B

The most common Web server today is A) WebSTAR. B) Apache HTTP Server. C) Netscape Server. D) Microsoft IIS. E) IBM HTTP Server.

B

Web browser software requests Web pages from the Internet using which protocol? A) FTP B) HTTP C) DNS D) URL E) HTML

B

What service converts IP addresses into more recognizable alphanumeric names? A) HTML B) DNS C) FTP D) HTTP E) IP

B

Which of the following statements about RFID is not true? A) RFID tags and antennas come in a variety of shapes and sizes. B) RFIDs require line-of-sight contact to be read. C) RFIDs transmit only over a short range. D) RFIDs use an antenna to transmit data. E) Microchips embedded in RFIDs are used to store data

B

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 E) SAN

B

________ combine the functionality of a cell phone with the computing of a laptop. A) Netbooks B) Smartphones C) E-readers D) Tablets E) iPods

B

"Predictive search" in Google's search engine A) uses a knowledge graph of what similar people searched on to predict your search interests. B) uses a semantic approach to predict what you are looking for. C) predicts what you are looking for as you enter words into the query box. D) uses a tracking service and cookies on your browser to predict search results. E) maintains a history of your searches and then predicts what you will search on next.

C

A(n) ________ is software for locating and managing stored Web pages. A) net server B) hub C) Web server D) modem E) router

C

All of the following are physical components of an RFID system except A) radio transmitters. B) tags. C) bar code. D) a stationary or handheld device. E) antenna.

C

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. E) geographical distance spanned by a network.

C

Based on your reading of the examples in the chapter, what would be the best use of RFID for a business? A) lowering network costs B) improving employee engagement C) managing the supply chain D) logging transactions E) enabling client communication

C

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

C

IPv6 is being developed in order to A) allow for different levels of service. B) update the packet transmission protocols for higher bandwidth. C) create more IP addresses. D) support Internet2. E) reduce excess IP addresses.

C

Instant messaging is a type of ________ service. A) network B) wireless C) chat D) e-mail E) cellular

C

The backbone networks of the Internet are typically owned by long-distance telephone companies called A) backbone providers. B) enhanced service providers. C) network service providers. D) regional network providers. E) internet bulk providers.

C

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) modem. B) hub. C) switch. D) NIC. E) router.

C

The telephone system is an example of a ________ network. A) peer-to-peer B) wireless C) circuit-switched D) client/server E) packet-switched

C

What are the four layers of the TCP/IP reference model? A) application, hardware, Internet, and network interface B) physical, application, Internet, and network interface C) application, transport, Internet, and network interface D) physical, application, transport, and network interface E) software, hardware, network interface, Internet

C

What technology allows people to have content pulled from Web sites and fed automatically to their computers? A) FTP B) IPv6 C) RSS D) HTTP E) Bluetooth

C

Which of the following statements is not true about search engines? A) Users are increasingly using search engines on mobile devices. B) They are monetized almost exclusively by search engine marketing. C) There are hundreds of search engines vying for user attention, with no clear leader having yet emerged. D) They are arguably the Internet's "killer app." E) They have solved the problem of how users instantly find information on the Internet.

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) MAN B) domain-based LAN C) peer-to-peer network D) WAN E) SAN

C

A VPN A) provides secure, encrypted communications using Telnet. B) is an Internet-based service for delivering voice communications. C) is a proprietary networking service technology developed by individual corporations. D) is an encrypted private network configured within a public network. E) is more expensive than a dedicated network.

D

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. E) MAN.

D

A(n) ________ is a box consisting of a radio receiver/transmitter and antennas that links to a wired network, router, or hub. A) WiMax receiver B) RFID receiver C) hotspot D) access point E) hub

D

A(n) ________ is a device that forwards packets of data through different networks, ensuring that the data gets to the right address. A) telnet B) hub C) modem D) router E) packet

D

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 communications service for microcomputer users. C) a pathway through which packets are routed. D) a standard set of rules and procedures for control of communications in a network. E) the main computer in a telecommunications network

D

Shopping bots use ________ software for searching the Internet. A) comparison B) Web 3.0 C) SEO D) intelligent agent E) Web 2.0

D

The 802.11 set of standards is known as A) WLAN. B) WAN. C) WSN. D) Wi-Fi. E) WiMax.

D

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 Semantic Web. B) a 3-D Web. C) Internet2. D) the Internet of things. E) Web 2.0.

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) SEM. C) RSS. D) SEO. E) IAB.

D

Which digital cellular standard is used widely throughout the world except the United States? A) WLAN B) 4G C) CDMA D) GSM E) LTD

D

Which of the following is not a characteristic of packet switching? A) Packets include data for checking transmission errors. B) Packets travel independently of each other. C) Packets are reassembled into the original message when they reach their destinations. D) Packet switching requires point-to-point circuits. E) Packets are routed through many different paths.

D

Which of the following is the first generation of cellular systems suitable for watching videos? A) 2G B) 2.5G C) 3.5G D) 4G E) 3G

D

Which process is used to protect transmitted data in a VPN? A) VOIP B) chaining C) PPP D) tunneling E) packet-switching

D

A(n) ________ is a commercial organization with a permanent connection to the Internet that sells temporary connections to retail subscribers. A) RSS B) FTP C) NFP D) WAN E) ISP

E

A(n) ________ signal is a discrete, binary waveform that transmits data coded into two discrete states such as 1-bits and 0-bits. A) modulated B) broadband C) T1 D) analog E) digital

E

The child domain of the root is the A) second-level domain. B) mid-tier domain. C) host name. D) domain extension. E) top-level domain.

E

The method of slicing digital messages into parcels, transmitting them along different communication paths, and reassembling them at their destinations is called A) ATM. B) multiplexing. C) packet shifting. D) packet routing. E) packet switching.

E

The most appropriate wireless networking standard for creating PANs is A) Wi-Fi. B) I-mode. C) RFID. D) IEEE 802.11b. E) Bluetooth.

E

Which of the following is not one of the top five search engines? A) Yahoo B) Microsoft Bing C) Google D) Ask E) Facebook

E

Which protocol is the Internet based on? A) HTTP B) FTP C) DNS D) packet-switching E) TCP/IP

E

Which type of network treats all processors equally and allows peripheral devices to be shared without going to a separate server? A) MAN B) wireless C) LAN D) Windows domain network E) peer-to-peer

E

A computer network consists of at least three computers.

FALSE

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

FALSE

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

FALSE

Central large mainframe computing has largely replaced client/server computing

FALSE

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

FALSE

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

FALSE

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

FALSE

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

FALSE

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

TRUE

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

TRUE

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.

TRUE

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.

TRUE

Mobile search makes up at least 50% of all Internet searches.

TRUE

More than 50% of U.S. Internet users access the Internet via mobile devices.

TRUE

Telephone networks are fundamentally different from computer networks.

TRUE

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

TRUE

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

TRUE

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

TRUE

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.

TRUE

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

TRUE