Chapter Seven

The WiMax standard can transmit up to a distance of approximately

30 miles

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

4G

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

Apache HTTP Server

The most appropriate wireless networking standard for creating PANs is

Bluetooth

What service converts IP addresses into more recognizable alphanumeric names?

DNS

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 replaces client/server computing

False

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

False

Over 80% of U.S. Internet users access the Internet via mobile devices.

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

False

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

False

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

GSM

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

HTTP

Which organization helps define the overall structure of the Internet?

IAB

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

LAN

4G networks are also known as ____________ networks

LTD

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

MAN

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

Packet switching requires point-to-point circuits

Which of the following statements about RFID is not true?

RFIDs require line-of-sight contact to be read

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

RSS

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

SEO

Which protocol is the internet based on?

TCP/IP

Telephone networks are fundamentally different from computer networks

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

The 802.11 set of standards is known as

Wi-fi

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

a modem

In a telecommunications network architecture, a protocol is

a standard set of rules and procedures for control of communications in a network

Which signal types are represented by a continuous waveform?

analog

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

application, transport, Internet, and network interface.

T1 lines

are high-speed, leased data lines providing guaranteed service levels.

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

azimuth-interactive

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

bar code

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

bps

Instant messaging is a type of ________ service

chat

The telephone system is an example of a _________ network

circuit-switched

The Internet is based on which three ket technologies

client/server computing, packet switching, and the development of communications standards for linking networks and computers

IPv6 is being developed in order to

create more IP addresses

Bandwidth is the

difference between the highest and lowest frequencies that can be accommodated on a single channel

In TCP/IP, IP is responsible for

disassembling and reassembling of packets during transmission.

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

eight

Passive RFID tags

have a range of several feet

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

hotspots

a VPN

is an encrypted private network configured within a public network

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

managing the supply chain

WSNs are designed for

monitoring the physical environment

Digital subscriber lines

operate over existing telephone lines to carry voice, data, and video

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

packet switching

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

peer-to-peer

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?

peer-to-peer network

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

switch

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

telnet

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

the Web of things

The child domain of the root is the

top-level domain

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

tunneling

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

unified communications

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

uniform resource locator

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

wide area network

Which of the following statements is now true about search engines?

There are hundreds of search engines vying for user attention, with no clear leader having yet emerged

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 20% of all Internet searches

True