Module 03 Networks Computer Concepts for End Users test bank

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1. Networks can be classified according to their size and geographic scope.
a. True
b. False

2. 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)

3. 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

4. The Internet is the world’s largest WAN.
a. True
b. False

5. A communication _________ is the medium used to transport information from one network device to another.
ANSWER: channel

6. 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

7. Which of the following is an advantage of wired connections?
a. More secure
b. More dependable
c. Faster speeds
d. All of the above

8. The most widespread wireless channel for communication networks is radio frequency (RF) signals.
a. True
b. False

9. In a wireless network, RF signals are sent and received by a ______________.
ANSWER: transceiver

10. Microwaves have more carrying capacity than radio waves.
a. True
b. False

11. When interference affects a wireless signal, data must be retransmitted.
a. True
b. False

12. Wireless connections use unlicensed frequencies that are available for public use, including 2.4 GHz and _____ GHz, which is subject to less interference from other devices, but it has a more limited range.
ANSWER: 5, five

13. Wireless connections use licensed frequencies that are available for public use.
a. True
b. False

14. ________ is the term for the transmission capacity of a communication channel.
ANSWER: Bandwidth

15. 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

16. Network channels that are capable of moving at least 25 megabits of data per second are classified as _________ channels.
ANSWER: broadband

17. In the context of communication networks, the term __________ refers to the structure and layout of network components.
ANSWER: topology

18. Which type of network topology connects a peripheral device to a host device?
a. Mesh
b. Star
c. Bus
d. Point-to-point

19. 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

20. Which type of network topology connects multiple devices to a central device?
a. Mesh
b. Star
c. Bus
d. Point-to-point

21. Data cannot flow over multiple networks that have different topologies.
a. True
b. False

22. Any device in a network is called a(n) __________.
ANSWER: node

23. 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)

24. Which of the following is an example of a DCE?
a. Router
b. Modem
c. Hub
d. All of the above

25. 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

26. In the context of networks, a communication __________ refers to a set of rules for efficiently transmitting data from one network node to another.
ANSWER: protocol

27. Two devices on a network negotiate their communication protocols through a process called ___________.
ANSWER: handshaking

28. Networks use more than one protocol, and the collection of protocols for a network is referred to as a protocol ________.
ANSWER: stack

29. 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

30. The organization that supervises Internet addressing is ARPANET.
a. True
b. False

31. The organization that supervises Internet addressing is ___________.
ANSWER: ICANN

32. Which network tier forms the Internet backbone?
a. Tier 1
b. Tier 2
c. Tier 3
d. Tier 4

33. When connecting to the Internet, most Internet users connect to a Tier 1 network.
a. True
b. False

34. Networks that form the Internet are maintained by ____________.
a. ISPs
b. IXPs
c. ICANN
d. All of the above

35. Parcels of data that are sent over a network are called ________.
ANSWER: packets

36. _________ 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

37. UDP (User Datagram Protocol) is faster than TCP (Transmission Control Protocol) but does not perform error checking.
a. True
b. False

38. 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)

39. A communication port is a physical circuit through which data flows.
a. True
b. False

40. A communication ______ is a virtual end point for data entering and leaving a digital device.
ANSWER: port

41. Internet addresses are controlled by which one of the following protocols?
a. TCP
b. IP
c. UDP
d. HTTP (Hypertext Transfer Protocol)

42. __________ uses 32-bit addresses to uniquely identify devices connected to the Internet.
ANSWER: IPv4

43. __________ uses 128-bit addresses to uniquely identify devices connected to the Internet.
ANSWER: IPv6

44. 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

45. Internet addresses that are temporarily assigned are called ________ addresses.
ANSWER: dynamic

46. IP addresses can be assigned by a network administrator, but more commonly they are automatically assigned by _________. (Hint: Use the acronym.)
ANSWER: DHCP

47. A private IP address can be used to send data over the Internet.
a. True
b. False

48. When a router connects to and communicates over the Internet, it has a(n) ________ IP address that is routable over the Internet.
ANSWER: public

49. The mechanism for tracking domain names and their corresponding IP addresses is called the ________.
ANSWER: DNS, domain name system

50. 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)

51. A domain name ends with a(n) ________ that indicates its top-level domain.
ANSWER: extension

52. Domain name servers maintain lists of all domain names and their corresponding IP addresses.
a. True
b. False

53. A Web site cannot be accessed by its domain name until the name is added to the domain name server lists.
a. True
b. False

54. Unauthorized changes to the DNS are called DNS ________.
ANSWER: spoofing

55. You may be able to bypass DNS outages by changing your DNS server.
a. True
b. False

56. Connection speed is technically a measure of capacity.
a. True
b. False

57. Your bandwidth _________ is the top speed allowed by your ISP plan.
ANSWER: cap

58. What type of Internet connection do you have when upload speed differs from download speed?
a. Dynamic
b. Asymmetric
c. Broadband
d. Symmetric

59. Most Internet connections are symmetrical.
a. True
b. False

60. ________ is utility software designed to measure responsiveness and availability of an Internet connection.
ANSWER: Ping

61. On a network, _______ is the elapsed time for data to make a round-trip from point A to point B and back to point A.
ANSWER: latency

62. Packet loss of less than 2% is required for acceptable streaming, gaming, Skype, and voice calls.
a. True
b. False

63. _____________ is a network diagnostic tool that shows you each router and server that your data encounters as it travels over the Internet.
ANSWER: Traceroute

64. DSL is an example of what type of Internet access?
a. Mobile
b. Portable
c. Fixed
d. Wireless

65. The maximum speed of a dial-up connection is _____ Kbps.
ANSWER: 56, fifty six

66. _______ is a high-speed, digital, always-on, Internet access technology that runs over standard phone lines.
ANSWER: DSL, Digital subscriber line

67. _______ involves the use of high-capacity fiber-optic cables to connect homes to broader municipal networks.
ANSWER: FTTH, Fiber to the home

68. Which type of broadband Internet access involves using cellular data networks?
a. Fixed
b. Portable
c. Mobile
d. Dial-up

69. 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

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

71. A Wi-Fi ______ is a wireless local area network that provides Internet access to the public.
ANSWER: hotspot

72. _______ 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

73. LANs use many of the same network technologies as the Internet.
a. True
b. False

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

75. The circuitry that enables a device to access a LAN is called a(n) ________.
ANSWER: NIC, network interface controller

76. A(n) ______ address is used to uniquely identify devices on LANs.
ANSWER: MAC, media access control

77. DHCP assigns an IP address to a device and links it to the device’s _______ address.
ANSWER: MAC

78. ________ is a wired network technology that is defined by IEEE 802.3 standards.
ANSWER: Ethernet

79. __________ 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

80. A(n) ________ device transmits data as radio waves and is compatible with Ethernet, so you can use the two technologies in a single network.
ANSWER: Wi-Fi

81. You can set up Wi-Fi to use wireless mesh topology or star topology.
a. True
b. False

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

83. Wi-Fi signals may reach up to 300 feet from the router.
a. True
b. False

84. Which wireless standard is faster: 802.11n or 802.11ac?
ANSWER: 802.11ac

85. When setting up a Wi-Fi network, the router you select should support the fastest device you’ll want to use on the network.
a. True
b. False

86. A(n) ________ is the broadcasted name of a wireless network.
ANSWER: SSID

87. Wireless _______ scrambles the data transmitted between wireless devices.
ANSWER: encryption

88. A(n) ________ network allows visitors to access the Internet through a LAN but doesn’t allow them to access other resources and data on the network.
ANSWER: guest

89. The ___________ connects active sensors and passive tags to communication networks.
ANSWER: IoT, Internet of Things

90. 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.
a. True
b. False

91. On a network, file sharing allows users to open, view, edit, copy, and delete files from a remote device, providing that they have the proper ___________.
ANSWER: permissions, permission, rights

92. Network _________ enables a computer to see other devices on a network and determines whether that computer can be seen by others.
ANSWER: discovery

93. File sharing poses no real security risks.
a. True
b. False

94. __________ specify how shared files can be accessed or used.
ANSWER: Permissions

95. 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

96. You can access FTP servers with a browser.
a. True
b. False

97. Dropbox is an example of a file hosting service.
a. True
b. False

98. 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

99. Napster spurred the development of sophisticated, distributed protocols such as BitTorrent.
a. True
b. False

100. Communication channels that carry data at speeds slower than 25 Mbps are classified as _______________.
ANSWER: narrowband

101. When you connect to a Wi-Fi hotspot, your digital device is classified as a(n) _______________.
a. server
b. DCE
c. DTE
d. router

102. A modem is required for ________________ Internet access.
a. dial-up
b. cable
c. DSL
d. all of the above

103. When network protocols clean a corrupted signal, the process is called ______________.
a. error correction
b. UDP
c. handshaking
d. packet switching