Deck 7: Telecommunications, the Internet, and Wireless Technology

Question 1

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.

Answer 1

True

Question 2

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.
E) modem.

Answer 2

B

Question 3

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.
E) a pathway through which packets are routed.

Answer 3

B

Question 4

A computer network consists of at least three computers.

Question 5

Which protocol is the Internet based on?

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

Question 6

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

Question 7

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

Question 8

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
E) e-mail, instant messaging, and newsgroups

Question 9

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

A) modem
B) router
C) packet
D) telnet
E) hub

Question 10

Telephone networks are fundamentally different from computer networks.

Question 11

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 12

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.
E) Packets are reassembled into the original message when they reach their destinations.

Question 13

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

Question 14

The telephone system is an example of a ________ network.

A) peer-to-peer
B) wireless
C) packet-switched
D) circuit-switched
E) client/server

Question 15

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 16

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

Question 17

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 shifting.
C) packet routing.
D) ATM.
E) packet switching.

Question 18

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.
E) breaking messages down into packets.

Question 19

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

Question 20

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
E) software, hardware, network interface, Internet

Question 21

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

Question 22

Which of the following is not one of the top five search engines?

A) Facebook
B) Yahoo
C) Microsoft Bing
D) Ask
E) Google

Question 23

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.

Question 24

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

Question 25

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

Question 26

Identify the layers of the Department of Defense reference model for TCP/IP, and describe how this model works.

Question 27

Digital subscriber lines

A) operate over existing telephone lines to carry voice, data, and video.
B) operate over coaxial cable 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.
E) are assigned to every computer on the Internet.

Question 28

T1 lines

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

Question 29

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.

Question 30

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

Question 31

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

Question 32

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

Question 33

How does packet switching work?

Question 34

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.

Question 35

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.

Question 36

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

Question 37

You have been hired by a small new Web design firm to set up a network for its single office location. The network is primarily needed for exchanging files, accessing and managing beta Web sites on their Web server, and connecting to the Internet. The firm hires many freelancers who come into the office on an ad-hoc basis and it does not have a lot of money to spend on infrastructure. What type of network will you recommend?

Question 38

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

Question 39

Which signal types are represented by a continuous waveform?

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

Question 40

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.

Question 41

What service converts IP addresses into more recognizable alphanumeric names?

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

Question 42

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.
E) child domain.

Question 43

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

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

Question 44

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.
E) is a proprietary networking service technology developed by individual corporations.

Question 45

________ integrate 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) Modems
E) Unified communications

Question 46

A(n) ________ is a commercial organization with a permanent connection to the Internet that sells temporary connections to retail subscribers.

A) RSS
B) WAN
C) NFP
D) ISP
E) FTP

Question 47

________ monetizes the value of the data stored by search engines.

A) TCP/IP
B) RSS
C) WiMax
D) Wireless sensor networks
E) Search engine marketing

Question 48

The child domain of the root is the

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

Question 49

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.
E) RSS.

Question 50

Instant messaging is a type of ________ service.

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

Question 51

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

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

Question 52

Shopping bots use ________ software for searching the Internet.

A) Web 2.0
B) Web 3.0
C) intelligent agent
D) comparison
E) SEO

Question 53

Which organization helps define the overall structure of the Internet?

A) none (no one "owns" the Internet)
B) W3C
C) ICANN
D) The Department of Commerce (U.S.)
E) IAB

Question 54

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
E) IPv6

Question 55

Web sites that enable users to share information, collaborate, and create new services and content are called ________ sites.

A) third generation
B) second generation
C) first generation
D) new wave
E) mashup

Question 56

The most common Web server today is

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

Question 57

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.
E) reduce excess IP addresses.

Question 58

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.
E) Users are increasingly using search engines on mobile devices.

Question 59

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
E) books.azimuth-interactive

Question 60

"Predictive search" in Google's search engine

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

Question 61

A(n) ________ is software for locating and managing stored Web pages.

A) Web server
B) net server
C) router
D) modem
E) hub

Question 62

The backbone networks of the Internet are typically owned by long-distance telephone companies called

A) regional network providers.
B) enhanced service providers.
C) internet bulk providers.
D) backbone providers.
E) network service providers.

Question 63

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

Question 64

4G networks use which standards?

A) GSM and LTD
B) CDMA and PAN
C) LTE and LTD
D) T-Mobile and AT&T
E) LTE and WiMax

Question 65

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 66

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

Question 67

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.
E) RFID tags and antennas come in a variety of shapes and sizes.

Question 68

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

A) bar code.
B) antenna.
C) radio transmitters.
D) tags.
E) a stationary or handheld device.

Question 69

Blogs, wikis, and social networking sites were designed for individuals to communicate with each other. What uses do businesses have for these tools?
Give specific examples.

Question 70

What is Web 3.0, and how do you think Web 3.0 developments could impact businesses?

Question 71

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

A) two
B) five
C) eight
D) fifteen
E) twenty

Question 72

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

Question 73

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

Question 74

What are the business advantages of using voice over IP (VoIP) technology?

Question 75

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

Question 76

What has made the Google search engine so successful?

Question 77

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

A) GSM
B) CDMA
C) WLAN
D) LTD
E) 4G

Question 78

Describe and explain the idea of "network neutrality." Are you in favor of network neutrality?
Why or why not?

Question 79

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

A) 2G
B) 2.5G
C) 3G
D) 3.5G
E) 4G

Question 80

The most appropriate wireless networking standard for creating PANs is

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