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CHAPTER 12: BEHIND THE SCENES: NETWORKING AND SECURITY Multiple Choice: 1. Which of the following is NOT an advantage of using networks compared to a stand-alone computer? A. ease of maintenance and administration B. enhanced resource sharing C. increased productivity D. increased communication capabilities Answer: A 2. Reference: Networking Advantages Difficulty: Easy ____________ networks may experience significant slowdowns if more than ten (10) users are on the network. A. Wide area B. Peer-to-peer C. Server-based D. Metropolitan area Answer: B 3. Reference: Client/Server Networks Difficulty: Moderate All of the following statements are DISADVANTAGES of peer-to-peer networks EXCEPT: A. P2P networks do not require servers. B. security cannot be implemented centrally on P2P networks. C. each computer must be updated individually in P2P networks. D. P2P networks are decentralized and not easily scalable. Answer: A Reference: Client/Server Networks Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Easy 1 Chapter 12: Behind the Scenes: Networking and Security 4. Individual users must take responsibility for data backups and security on a peer-to-peer network because this kind of network is considered: A. scalable. B. centralized. C. decentralized. D. dedicated. Answer: C 5. Reference: Client/Server Networks Difficulty: Moderate The ability to easily add additional users means that a network is: A. scalable. B. dedicated. C. decentralized. D. secure. Answer: A 6. Reference: Client/Server Networks Difficulty: Moderate In a client/server network, all clients are connected to a server that performs tasks for them, such as backup and security; therefore, it is known as a ____________ network. A. local area B. dedicated C. decentralized D. centralized Answer: D 7. Reference: Client/Server Networks Difficulty: Easy A(n) ____________ is a small group of computers and peripherals linked together in a small geographic area. A. LAN B. PAN C. CAN D. MAN Answer: A Reference: Classifications of Client/Server Networks: LANs… Copyright © 2008 Prentice-Hall. All rights reserved. 2 Difficulty: Easy Chapter 12: Behind the Scenes: Networking and Security 8. The Internet is most accurately categorized as a: A. LAN. B. PAN. C. WAN. D. MAN. Answer: C 9. Reference: Classifications of Client/Server Networks: LANS… Difficulty: Easy PANs are used to connect ____________ devices (such as Bluetooth-enabled devices) in close proximity to each other. A. peripheral B. wireless C. dedicated D. client Answer: B 10. Reference: Classifications of Client/Server Networks: LANs… Difficulty: Easy A(n) ____________ is a private corporate network, used exclusively by company employees. A. Internet B. local area network C. peer-to-peer D. intranet Answer: D 11. Reference: Constructing Client/Server Networks Difficulty: Moderate ____________ is specialized software that runs on a server computer to control network functionality. A. NOS software B. NCP software C. TCP software D. MAC software Answer: A Reference: Constructing Client/Server Networks Copyright © 2008 Prentice-Hall. All rights reserved. 3 Difficulty: Easy Chapter 12: Behind the Scenes: Networking and Security 12. The layout and structure of the network is known as the network’s: A. NOS. B. topology. C. components. D. protocol. Answer: B 13. Reference: Constructing Client/Server Networks Difficulty: Easy Cable and wireless communication technologies are types of: A. network adapters. B. topologies. C. transmission media. D. network operating systems. Answer: C 14. Reference: Constructing Client/Server Networks Difficulty: Moderate Network navigation devices include all of the following EXCEPT: A. servers. B. routers. C. switches. D. hubs. Answer: A 15. Reference: Constructing Client/Server Networks Difficulty: Easy ____________ servers store and manage files for network users. A. File B. Web C. Authentication D. Main Answer: A Reference: Constructing Client/Server Networks Copyright © 2008 Prentice-Hall. All rights reserved. 4 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 16. A(n) ____________ server keeps track of users logging onto the network and the services available to the users. A. file B. authentication C. Web D. e-mail Answer: B 17. Reference: Servers Difficulty: Easy ____________ servers are used to fulfill one specific function, such as handling e-mail. A. Dedicated B. Network C. Protocol D. Peer-to-peer Answer: A 18. Reference: Servers Difficulty: Moderate ____________ servers are used to manage all client-requested printing jobs for all printers. A. Database B. Network C. Print D. E-mail Answer: C 19. Reference: Print Servers Difficulty: Easy A(n) ____________ server, on a network, delivers the software to the clients because the software does not reside on the client computers. A. Web B. application C. communications D. database Answer: B Reference: Application Servers Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Easy 5 Chapter 12: Behind the Scenes: Networking and Security 20. The ____________ server, on a network, is the single point of contact with the outside world and is often the only device connected to the Internet. A. intranet B. database C. application D. communications Answer: D 21. Reference: Communications Servers Difficulty: Challenging In a(n) ____________ topology, all computers are connected in sequence, using a single cable. A. bus B. star C. hybrid D. ring Answer: A 22. Reference: Bus Topology Difficulty: Moderate In a bus topology, a ____________, located at each end of the network, absorbs the signal to prevent it from being reflected back onto the cable. A. node B. terminator C. packet D. network device Answer: B 23. Reference: Bus Topology Difficulty: Easy In a bus topology, the nodes do nothing to move the data along the network, making it a(n) ____________ topology. A. client/server B. active C. passive D. terminated Answer: C Reference: Bus Topology Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 6 Chapter 12: Behind the Scenes: Networking and Security 24. Active topologies differ from passive topologies in that nodes on the active topology network: A. help pass the data along the network. B. listen for signals on the line before transmitting. C. ultimately send their messages to a terminator. D. actively search for packets intended for themselves. Answer: A 25. Reference: Ring Topology Difficulty: Challenging When two computers send data at the same time on a bus network it is called a(n): A. access method. B. data collision. C. active topology. D. data termination. Answer: B 26. Reference: Bus Topology Difficulty: Moderate In a ring topology, the computer in possession of the ____________can transmit data. A. packet B. data C. access method D. token Answer: D 27. Reference: Ring Topology Difficulty: Moderate Because each node on the network is responsible for retransmitting the token and the data to the next node, the ____________ topology is considered an active topology. A. ring B. bus C. star D. hybrid Answer: A Reference: Ring Topology Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 7 Chapter 12: Behind the Scenes: Networking and Security 28. Which of the following statements about ring topology networks is TRUE? A. A ring topology network is plagued with data collisions. B. A ring topology network uses the CSMA/CD access method to transmit data. C. A ring topology network allows only one node to transmit data at a time. D. A ring topology network is considered passive. Answer: C 29. Reference: Ring Topology Difficulty: Moderate In the star topology, the central point of failure is the: A. client. B. switch. C. terminator. D. access point. Answer: B 30. Reference: Star Topology Difficulty: Challenging Which of the following statements, concerning star topology networks, is FALSE? A. Star topology networks use the CSMA/CD access method. B. If one computer fails, it does not affect the rest of the network. C. There are no data collisions on a star topology network. D. If the switch fails, the network no longer functions. Answer: C 31. Reference: Star Topology Difficulty: Challenging When a collision occurs on an Ethernet network, the node that detects the collision sends a(n): A. token. B. packet. C. jam signal. D. warning. Answer: C Reference: Star Topology Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 8 Chapter 12: Behind the Scenes: Networking and Security 32. On an Ethernet network, after a collision occurs between two computers and a jam signal is sent, what happens next? A. The signals are encrypted to avoid a second collision. B. A token is resent by the two computers that caused the collision. C. The two computers wait random amounts of time, and then resend their signals. D. The switch notifies the network of the collision. Answer: C 33. Reference: Star Topology Difficulty: Challenging Which of the following statements is FALSE concerning bandwidth? A. Bandwidth defines the speed at which the data flows on the network. B. Cable is rated by the maximum amount of bandwidth it supports. C. Bandwidth is the amount of data transmitted across the transmission medium in a certain amount of time. D. Bandwidth is measured in bits per second (bps). Answer: A 34. Reference: Transmission Media Difficulty: Easy ____________ defines whether the transmission media uses electrical impulses or pulses of light to transmit data. A. Bandwidth B. Susceptibility to interference C. Signal transmission method D. Access method Answer: C 35. Reference: Wired Transmission Media Difficulty: Challenging EMI and RFI are types of: A. signal interference. B. bandwidth measurements. C. twisted pair cable. D. wireless transmission media. Answer: A Reference: Wired Transmission Media Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 9 Chapter 12: Behind the Scenes: Networking and Security 36. All of the following statements concerning twisted pair cable are true EXCEPT: A. Twisted pair uses pulses of light to send data. B. The number of twists in twisted pair is significant because it makes the wires less susceptible to interference. C. UTP is not recommended in areas with significant sources of interference. D. The two most common types of UTP in use today are Cat 5e and Cat 6. Answer: A 37. Reference: Twisted Pair Cable Difficulty: Moderate UTP and STP are examples of: A. CATV cable. B. thicknet coaxial cable. C. fiber-optic cable. D. twisted pair cable. Answer: D 38. Reference: Twisted Pair Cable Difficulty: Easy The core of a coaxial cable is usually made from: A. magnesium oxide. B. copper. C. silicon. D. glass fibers. Answer: B 39. Reference: Coaxial Cable Difficulty: Easy All of the following statements regarding fiber-optic cable are true EXCEPT: A. the core of fiber-optic cable is composed of copper. B. fiber-optic cable uses pulses of light to transmit data. C. data passes through fiber-optic cable in one direction only. D. the outer jacket of fiber-optic cables is often made of Kevlar. Answer: A Reference: Fiber-Optic Cable Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 10 Chapter 12: Behind the Scenes: Networking and Security 40. The wired medium least susceptible to signal interference is: A. STP cable. B. coaxial cable. C. fiber-optic cable. D. UTP cable. Answer: C 41. Reference: Fiber-Optic Cable Difficulty: Moderate ____________ wireless devices have largely been replaced with faster technology. A. 802.11b B. 802.11g C. 802.11n D. 802.11a Answer: A 42. Reference: Wireless Media Options Difficulty: Moderate All of the following protocols are proprietary EXCEPT: A. TCP/IP. B. IPX. C. NetBEUI. D. AFP. Answer: A 43. Reference: Network Operating Systems Difficulty: Easy The major network operating systems for installation on the server, in a client/server environment, include all of the following EXCEPT: A. Windows Server 2003. B. UNIX. C. Windows XP. D. Novell NetWare. Answer: C Reference: Network Operating Systems Copyright © 2008 Prentice-Hall. All rights reserved. 11 Difficulty: Easy Chapter 12: Behind the Scenes: Networking and Security 44. The OSI model is divided into ____________ processes called layers. A. five B. six C. seven D. eight Answer: C 45. Reference: Dig Deeper: The OSI Model Difficulty: Easy In the OSI model, the ____________ layer handles data encryption and compression. A. application B. presentation C. data link D. session Answer: B 46. Reference: Dig Deeper: The OSI Model Difficulty: Challenging In the OSI model, the ____________ layer is responsible for assembling the data packets into frames. A. session B. transport C. data link D. network Answer: C 47. Reference: Dig Deeper: The OSI Model Difficulty: Challenging The device that acts as an interface to connect with and communicate on a network is known as the: A. network adapter. B. hub. C. repeater. D. switch. Answer: A Reference: Network Adapters Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Easy 12 Chapter 12: Behind the Scenes: Networking and Security 48. Which of the following statements concerning MAC addresses is TRUE? A. A MAC address is used to externally identify a computer on a network. B. The MAC address and the IP address can be used interchangeably. C. A MAC address must match the IP address. D. The first three numbers in the address identify the manufacturer. Answer: D 49. Reference: MAC Addresses Difficulty: Challenging If a network requires a cable to connect two devices farther apart than the normal maximum run length of the media, the way to prevent signal degradation is to install a(n): A. adapter. B. repeater. C. bridge. D. switch. Answer: B 50. Reference: Repeaters and Hubs Difficulty: Moderate Another name for a “smart” hub is a: A. bridge. B. repeater. C. firewall. D. switch. Answer: D Reference: Switches and Bridges Difficulty: Moderate Fill in the Blank: 51. ____________ are designed to send information between two networks. Answer: Routers 52. Reference: Routers Difficulty: Easy The special communications software, installed on a computer to enable the network adapter to communicate with the operating system is called the ____________. Answer: device driver Reference: Network Adapters Copyright © 2008 Prentice-Hall. All rights reserved. 13 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 53. Entering a user ID and password is known as ____________. Answer: authentication 54. Reference: Authentication The acronym NOS stands for ____________. Answer: Network Operating System 55. Reference: Comparing Topologies Difficulty: Easy Reference: Star Topology Difficulty: Challenging Reference: Ring Topology Difficulty: Moderate Reference: Wired Transmission Media Difficulty: Challenging Reference: Star Topology Difficulty: Easy ____________ cable is composed of a glass or plastic fiber (or bundle of fibers) as its core. Answer: Fiber-optic 64. Difficulty: Challenging A(n) ____________ is a set of rules for exchanging communication. Answer: protocol 63. Reference: Dig Deeper: The OSI Model ____________ is the amount of data that can be transmitted over transmission media in a certain amount of time. Answer: Bandwidth 62. Difficulty: Moderate The ____________ passing method is used on a ring topology to avoid collisions. Answer: token 61. Reference: MAC Addresses CSMA/CD is the access method used on ____________ networks. Answer: Ethernet 60. Difficulty: Challenging Combining multiple topologies into one network is known as a(n) ____________ network. Answer: hybrid 59. Reference: Network Operating Systems In the OSI model, the ____________ layer converts the data into signals for transmission over the network. Answer: physical 58. Difficulty: Easy The ____________ identifies a computer internally on the network. Answer: MAC address 57. Reference: Network Operating Systems NetBEUI, AFP, and IPX are known as ____________ protocols, which means that they do not work with another vendor’s NOS. Answer: proprietary 56. Difficulty: Easy Reference: Fiber-Optic Cable Difficulty: Easy ____________ networks do not need specialized network operating system software. Answer: Peer-to-peer Reference: Network Operating Systems Copyright © 2008 Prentice-Hall. All rights reserved. 14 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 65. The 802.11 wireless standard is also known as ____________. Answer: Wi-Fi 66. Difficulty: Moderate Reference: Switches and Bridges Difficulty: Easy Reference: Repeaters and Hubs Difficulty: Moderate Reference: Network Operating Systems Difficulty: Challenging Reference: Wired Transmission Media Difficulty: Easy The term packet screening refers to the examination of incoming data packets by the ____________to ensure that they originate or are authorized by valid users on the internal network. Answer: firewall 75. Reference: Switches and Bridges EMI and RFI are types of ____________. Answer: interference 74. Difficulty: Moderate ____________ is the open protocol used by the Internet. Answer: TCP/IP 73. Reference: MAC Addresses ____________ amplify a signal and retransmit it to extend cable runs beyond the maximum run length. Answer: Repeaters 72. Difficulty: Challenging ____________ are devices used to send data between different segments (collision domains) on a network. Answer: Bridges 71. Reference: MAC Addresses A(n) ____________ sends data only to the intended recipient as opposed to a hub, which sends the data to all devices connected to it. Answer: switch 70. Difficulty: Moderate The acronym MAC, as in MAC address, stands for ____________. Answer: Media Access Control 69. Reference: Network Adapters ____________ are containers that hold multiple data packets. Answer: Frames 68. Difficulty: Easy In wireless networks, wireless NICs connect to ____________, which provide wireless devices with a sending and receiving connection to the network. Answer: wireless access points 67. Reference: Wireless Media Options Reference: Firewalls Difficulty: Moderate ____________ use IP addresses to send information between two networks. Answer: Routers Reference: Routers Copyright © 2008 Prentice-Hall. All rights reserved. Difficulty: Moderate 15 Chapter 12: Behind the Scenes: Networking and Security True and False: 76. In a ring topology, if one computer fails it can bring the entire network to a halt. Answer: True 77. Reference: Firewalls Difficulty: Moderate The hub is responsible for breaking down data into packets and preparing the packets for transmission across the network. Answer: False (network adapter or NIC) Reference: Network Adapters 79. Reference: Dig Deeper: The OSI Model Difficulty: Easy Reference: Star Topology Difficulty: Moderate Reference: Network Topologies Difficulty: Easy A bus topology provides a fairer allocation of resources than a ring topology by giving all the nodes on the network an equal opportunity to send data. Answer: False 86. Reference: Twisted Pair Cable Token passing and CSMA/CD are methods of avoiding data collisions. Answer: True 85. Difficulty: Easy The ring topology is the most widely deployed client/server topology in businesses today. Answer: False (star) 84. Reference: Wired Transmission Media Crosstalk interference is the tendency of signals on one twisted pair wire to interfere with signals on a wire next to it. Answer: True 83. Difficulty: Moderate Throughput is another name for bandwidth. Answer: True 82. Difficulty: Challenging Twisted pair cable has the lowest susceptibility to interference. Answer: False (highest) Reference: Figure 12.14: Comparison of Characteristics… 81. Difficulty: Easy In the OSI model, the session layer sets up and manages the virtual (not physical) connection between the sending and receiving devices. Answer: True 80. Difficulty: Easy An application server acts as a go-between for computers on an internal network and the external network (Internet). Answer: False (proxy) 78. Reference: Ring Topology Reference: Ring Topology Difficulty: Challenging MAC addresses enable computers on one network to communicate with computers on another network. Answer: False (IP addresses) Reference: MAC Addresses Copyright © 2008 Prentice-Hall. All rights reserved. 16 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 87. Bridges are relatively simple devices whose sole purpose is to amplify a signal and retransmit it. Answer: False (Repeaters) 88. Reference: Repeaters and Hubs In a star network, the failure of one computer affects the other computers on the network. Answer: False Reference: Figure 12.10: Advantages and Disadvantages of Bus,… 89. Difficulty: Easy Hubs receive a signal from a device, reconstruct it, and transmit it to all the ports on the hub. Answer: True 90. Difficulty: Challenging Reference: Repeaters and Hubs Difficulty: Challenging Authentication can be achieved through passwords, biometric access devices, and possessed objects. Answer: True Reference: Authentication Difficulty: Easy Matching: 91. Match the following acronyms to their descriptions: I. MAC II. CSMA/CD B. device address III. OSI C. Ethernet access method IV. EMI D. type of cable V. UTP E. protocol standard Answer: B, C, E, A, D 92. A. type of interference Reference: Multiple locations in chapter Difficulty: Moderate Match the following terms to their meanings: I. frame A. packet granting transmission rights II. bastion B. assemblage of packets III. token C. a Novell protocol IV. IPX D. host configured as proxy server V. jam E. signal indicating data collisions Answer: B, D, A, C, E Reference: Multiple locations in chapter Copyright © 2008 Prentice-Hall. All rights reserved. 17 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 93. Match the following devices to their functions: I. repeater II. hub B. transmits data between two different networks III. switch C. device used for signal amplification and retransmission IV. bridge D. multiport device used for signal amplification and broadcast V. router E. connects collision domains of a network Answer: C, D, A, E, B 94. Reference: Multiple locations in chapter Difficulty: Challenging Match the following terms to their meanings: I. topology A. communication rules II. proxy B. large size coaxial cable III. intranet C. server controlling Internet access of network IV. protocol D. private Web-based network V. ThickNet E. layout of a network Answer: E, C, D, A, B 95. A. sends data to a specific device, not to all devices Reference: Multiple locations in chapter Difficulty: Moderate Match the following acronyms to their descriptions: I. TCP/IP A. proprietary communications protocol II. IPX B. software controlling communications in a network III. NOS C. network spanning a metropolitan area IV. MAN D. type of network adapter V. NIC E. open communications protocol Answer: E, A, B, C, D Reference: Multiple locations in chapter Copyright © 2008 Prentice-Hall. All rights reserved. 18 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 96. Match the following OSI layers to their functions: I. Session II. Presentation B. sets up a virtual connection between sending and receiving devices and manages communication III. Data Link C. determines where to send the data packets on the network IV. Transport D. assembles the data packets into frames and delivers them to the physical layer V. Network E. handles packet acknowledgment Answer: B, A, D, E, C 97. Reference: Dig Deeper: The OSI Model Difficulty: Challenging Match the following terms to their meanings: I. bandwidth A. entering a user ID and password II. bend radius B. examining incoming data packets to ensure they originated from an authorized user III. ThinNet C. degree of flexibility in a cable IV. authentication D. a type of coaxial cable used for cable TV V. packet screening E. amount of data that can be transmitted in a certain amount of time Answer: E, C, D, A, B 98. A. reformats, compresses, and encrypts data Reference: Multiple locations in chapter Difficulty: Moderate Match the following terms to their meanings: I. firewall A. a security measure, composed of hardware or software, to protect a network from attacks over the Internet II. terminator B. a device that absorbs the signal to prevent its reflection back onto the network III. passive topology C. a special data packet on a ring topology IV. access method D. nodes on a network do nothing to move data along the network V. token E. controls how computers can use the transmission media Answer: A, B, D, E, C Reference: Multiple locations in chapter Copyright © 2008 Prentice-Hall. All rights reserved. 19 Difficulty: Moderate Chapter 12: Behind the Scenes: Networking and Security 99. Match the following terms to their meanings: I. active topology A. combining multiple topologies into one network II. hybrid B. the routes data takes to flow between devices III. transmission media C. each node on the network is responsible for retransmitting the signal IV. device driver D. a chunk of data containing the address of the receiving computer V. packet E. enables a device to communicate with the operating system Answer: C, A, B, E, D Reference: Multiple locations in chapter Difficulty: Moderate 100. Match the following terms to their meanings: I. crosstalk A. tendency of signals on one wire to interfere with signals on a wire next to it II. CAT 6 B. can handle bandwidth of 1 Gbps III. open protocol C. computers connected in sequence on a single cable IV. centralized D. not associated with one particular vendor V. bus E. characteristic of client/server networks Answer: A, B, D, E, C Reference: Multiple locations in chapter Copyright © 2008 Prentice-Hall. All rights reserved. 20 Difficulty: Moderate