Computer Concepts 2017- Chapter 3

T

A Web site cannot be accessed by its domain name until the name is added to the domain name server lists.

D

A modem is required for ________________ Internet access. A. dial-up B. cable C. DSL D. all of the above

C

DSL is an example of what type of Internet access? A. Mobile B. Portable C. Fixed D. Wireless

T

Domain name servers maintain lists of all domain names and their corresponding IP addresses.

T

Dropbox is an example of a file hosting service.

B

Internet addresses are controlled by which one of the following protocols? A. TCP B. IP C. UDP D. HTTP (Hypertext Transfer Protocol)

T

LANs use many of the same network technologies as the Internet.

T

Many RFID (radio-frequency identification) and NFC (near field communication) tags contain no power source of their own and depend on the receiving device to provide the power for data exchange.

T

Microwaves have more carrying capacity than radio waves.

T

Mobile broadband can be used to access the Internet from a laptop or desktop computer.

F

Most Internet connections are symmetrical.

F

Most wireless LANs use licensed frequencies that require applying to the Federal Communications Commission (FCC) for permission.

A

Networks that form the Internet are maintained by ____________. A. ISPs B. IXPs C. ICANN D. All of the above

B

On a network, any device that stores or generates data is considered to be a(n) _________. A. router B. DTE (data terminal equipment) C. DCE (data communications equipment) D. ATP (advanced threat protection)

C

On a network, which protocol is responsible for dividing files into chunks, adding headers containing information for reassembling packets in their original order, and error checking? A. UDP B. IP C. TCP D. FTP (File Transfer Protocol)

T

Packet loss of less than 2% is required for acceptable streaming, gaming, Skype, and voice calls.

B

Suppose you wanted to run a Web server or FTP server from your home. What type of IP address would you want? A. Dynamic B. Static C. TCP D. Broadband

T

The Internet is the world's largest WAN.

B

The bandwidth of a channel that carries digital data is usually measured in ___________. A. bytes per second B. bits per second C. GHz D. microwaves

F

The organization that supervises Internet addressing is ARPANET.

T

UDP (User Datagram Protocol) is faster than TCP (Transmission Control Protocol) but does not perform error checking.

D

What organization is the top-level authority for supervising domain name requests? A. DNS B. HTTP C. ISPs (Internet service providers) D. ICANN (Internet Corporation for Assigned Names and Numbers)

B

What type of Internet connection do you have when upload speed differs from download speed? A. Dynamic B. Asymmetric C. Broadband D. Symmetric

F

When connecting to the Internet, most Internet users connect to a Tier 1 network.

T

When interference affects a wireless signal, data must be retransmitted.

A

When network protocols clean a corrupted signal, the process is called ______________. A. error correction B. UDP C. handshaking D. packet switching

T

When setting up a Wi-Fi network, the router you select should support the fastest device you'll want to use on the network.

C

When you connect to a Wi-Fi hotspot, your digital device is classified as a(n) _______________. A. server B. DCE C. DTE D. router

A

Which DCE would you use if you wanted to extend a wired network by adding more ports? A. Hub B. Switch C. Bridge D. Repeater

D

Which file-sharing protocol distributes the role of a file server across a collection of dispersed computers? A. FTP B. UDP C. Dropbox D. BitTorrent

A

Which network tier forms the Internet backbone? A. Tier 1 B. Tier 2 C. Tier 3 D. Tier 4

D

Which of the following is an advantage of wired connections? A. More secure B. More dependable C. Faster speeds D. All of the above

D

Which of the following is an example of a DCE? A. Router B. Modem C. Hub D. All of the above

C

Which type of broadband Internet access involves using cellular data networks? A. Fixed B. Portable C. Mobile D. Dial-up

B

Which type of cable is used for high-capacity trunk lines that provide main routes for telephone, cable, and Internet communications? A. Category 6 cables B. Fiber-optic cables C. Coaxial cables D. All of the above

C

Which type of communication protocol converts data into standard formats that can be used by applications? A. Physical B. Transport C. Arrival D. None of the above

D

Which type of mobile broadband service has maximum download rates of 300 Mbps and upload rates of 75 Mbps? A. TCP B. ICANN C. 3G D. 4G

A

Which type of network connects smart devices or consumer electronics within a range of about 30 feet (10 meters) and without the use of wires or cables? A. PAN (personal area network) B. LAN (local area network) C. WAN (wide area network) D. VPN (virtual private network)

C

Which type of network covers a large geographical area and usually consists of several smaller networks, which might use different computer platforms and network technologies? A. PAN B. LAN C. WAN D. VPN

A

Which type of network topology allows for redundant paths between devices that can be used to bypass failed devices? A. Mesh B. Star C. Bus D. Point-to-Point

D

Which type of network topology connects a peripheral device to a host device? A. Mesh B. Star C. Bus D. Point-to-point

B

Which type of network topology connects multiple devices to a central device? A. Mesh B. Star C. Bus D. Point-to-point

A

Which type of protocol provides a way to transfer files from one computer to another over any TCP/IP network, such as a LAN or the Internet? A. FTP B. UDP C. TCP D. PAN

T

Wi-Fi signals may reach up to 300 feet from the router.

F

With wired connections, such as Ethernet, the rated speed and range are usually quite different to actual performance.

T

You can access FTP servers with a browser.

T

You may be able to bypass DNS outages by changing your DNS server.

C

_______ are designed to provide connectivity for devices within a limited area, typically within the premises of a home, office building, business, or school. A. WANs B. PANs C. LANs D. BANs

B

_________ technology divides a message into several packets that can be routed independently to their destination. A. Handshaking B. Packet switching C. Packet sniffing D. Circuit switching

B

__________ LANs are usually arranged in a star topology with computers wired to central switching circuitry that is incorporated in modern routers. A. Internet B. Ethernet C. Wireless D. Mobile