MIS430 Final Testbank 2022 PDF

Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks 1. Wide area networks share a few characteristics with local area networks. a. True b. False ANSWER: True REFERENCES: page 303 2. WANs can cover large geographic distances, including th...

Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks 1. Wide area networks share a few characteristics with local area networks. a. True b. False ANSWER: True REFERENCES: page 303 2. WANs can cover large geographic distances, including the entire Earth. a. True b. False ANSWER: True REFERENCES: page 304 3. Many of the same technologies and communications protocols found in local area networks are used to create metropolitan area networks. a. True b. False ANSWER: True REFERENCES: page 304 4. LANs cover much greater distances than MANs do. a. True b. False ANSWER: False REFERENCES: page 304 5. A WAN’s infrastructure consists of a collection of nodes and interconnecting telecommunications links. a. True b. False ANSWER: True REFERENCES: page 305 6. MANs cannot be used to support high-speed disaster recovery systems and real-time transaction backup systems. a. True b. False ANSWER: False REFERENCES: page 304 7. Because there are so many devices in a WAN, and they are spread over large distances, using a LAN-type connection is not feasible. a. True b. False ANSWER: True REFERENCES: page 305 8. WANs require specialized technology designed to manage traffic across a wide variety of devices and connection types. a. True Copyright Cengage Learning. Powered by Cognero. Page 1 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks b. False ANSWER: False REFERENCES: page 306 9. In frequency division multiplexing, the combined signals are always digital. a. True b. False ANSWER: False REFERENCES: page 315 10. Time-division multiplexing (TDM) allows only one user at a time to transmit. a. True b. False ANSWER: True REFERENCES: page 313 11. WDM supports multiple lambdas. a. True b. False ANSWER: True REFERENCES: page 316 12. Both frequency division multiplexing and synchronous time division multiplexing avoid waste of unused transmission space. a. True b. False ANSWER: False REFERENCES: page 315 13. Code division multiplexing is based upon a class of modulation techniques known as spread spectrum technology. a. True b. False ANSWER: True REFERENCES: page 318 14. The big advantage of frequency division multiplexing over synchronous TDM is the lower noise due to the use of digital signals during transmission. a. True b. False ANSWER: False REFERENCES: page 315 15. Synchronous time-division multiplexing does not require as high-speed a line as statistical time-division multiplexing does. a. True b. False Copyright Cengage Learning. Powered by Cognero. Page 2 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks ANSWER: False REFERENCES: page 313 16. CDM technology falls into two categories: frequency hopping and direct sequence. a. True b. False ANSWER: True REFERENCES: page 318 17. The Lempel-Ziv algorithm can be fairly effective in compressing data. a. True b. False ANSWER: True REFERENCES: page 321 18. The basic way to perform compression is to look for some common pattern in the data and replace each data pattern with a symbol or symbols that will consume less space during transmission or storage. a. True b. False ANSWER: True REFERENCES: page 320 19. The JPEG encoder produces a data stream that has a much faster data rate than that of conventional CD-quality music. a. True b. False ANSWER: False REFERENCES: page 322 20. A video device displays multiple (typically 30) frames per second. a. True b. False ANSWER: True REFERENCES: page 325 21. Most wide area networks use some form of Dijkstra’s algorithm to determine a least-cost route through a network. a. True b. False ANSWER: True REFERENCES: page 307 22. Bellman-Ford algorithm, the Floyd-Warshall algorithm, and Johnson’s algorithm are alternatives to Dijkstra’s least- cost routing algorithm. a. True b. False ANSWER: False REFERENCES: page 308 Copyright Cengage Learning. Powered by Cognero. Page 3 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks 23. One advantage of dynamic routing is that it never adds to network congestion. a. True b. False ANSWER: False REFERENCES: page 308 24. Using a distance-vector protocol, a router monitors each link and the number of hops from that link to network destinations. a. True b. False ANSWER: True REFERENCES: page 309 25. A network administrator assigns each routing protocol an AD (administrative distance); the higher the values are, the higher will be the priority. a. True b. False ANSWER: False REFERENCES: page 309 26. The first routing algorithm used within the Internet was called a distance vector routing algorithm. a. True b. False ANSWER: True REFERENCES: page 309 27. Routing Information Protocol is a link-state protocol. a. True b. False ANSWER: False REFERENCES: page 309 28. Cisco’s EIGRP is a hybrid routing protocol. a. True b. False ANSWER: True REFERENCES: page 309 29. RIP delivers a very small convergence time. a. True b. False ANSWER: False REFERENCES: page 309 30. Like RIP, OSPF has hop limits, but it calculates more efficiently the best paths than RIP. Copyright Cengage Learning. Powered by Cognero. Page 4 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks a. True b. False ANSWER: False REFERENCES: page 311 31. IS-IS (Intermediate System to Intermediate System) is a distance-vector protocol. a. True b. False ANSWER: False REFERENCES: page 311 32. A ____ area network is typically confined to a single building or a couple floors within one building. a. personal b. local c. metropolitan d. wide ANSWER: b REFERENCES: page 304 33. A network that expands beyond a metropolitan area is a ____ area network. a. personal b. local c. metropolitan d. wide ANSWER: d REFERENCES: page 304 34. ____ area networks can cover large geographic distances, including the entire Earth. a. Personal b. Local c. Wide d. Universal ANSWER: c REFERENCES: page 304 35. MANs are almost exclusively ____ networks, and thus capable of supporting data rates into the tens of millions and hundreds of millions of bits per second. a. fiber-optic b. copper-wired c. twisted-paired d. coaxial-cabled ANSWER: a REFERENCES: page 304 36. ____ is the assignment of nonoverlapping frequency ranges to each “user” of a medium. Copyright Cengage Learning. Powered by Cognero. Page 5 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks a. Time division multiplexing (TDM) b. Transmission code multiplexing (TCM) c. Amplitude division multiplexing (ADM) d. Frequency division multiplexing (FDM) ANSWER: d REFERENCES: page 315 37. To allow multiple users to share a single medium, FDM assigns each user a separate ____. a. time slot b. transmission code c. channel d. amplitude ANSWER: c REFERENCES: page 315 38. The device that is attached to the receiving end of the medium and splits off each signal to deliver it to the appropriate receiver is called the second multiplexor, or ____. a. multiplexor b. endplexor c. splitxor d. demultiplexor ANSWER: d REFERENCES: page 313 39. In FDM, ____ take up frequencies that might be used for other data channels, thus introducing a certain level of wastefulness. a. guard bands b. channels c. multiplexors d. demultiplexors ANSWER: a REFERENCES: page 316 40. Since time division multiplexing was introduced, it has split into two roughly parallel but separate technologies: synchronous time division multiplexing and ____ time division multiplexing. a. fixed b. statistical c. inverse d. empirical ANSWER: b REFERENCES: page 314 41. ____ gives each incoming source signal a turn to be transmitted, proceeding through the sources in round-robin fashion. a. Statistical time division multiplexing (Stat TDM) b. Empirical time division multiplexing (ETDM) Copyright Cengage Learning. Powered by Cognero. Page 6 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks c. Synchronous time division multiplexing (Sync TDM) d. Fixed time division multiplexing (FTDM) ANSWER: c REFERENCES: page 313 42. Under normal circumstances, the synchronous time division multiplexor maintains a simple ____ sampling order of the input devices. a. round-robin b. FIFO c. LIFO d. FILO ANSWER: a REFERENCES: page 313 43. A wide area network connects its workstations through the use of a ____ design and requires routing to transfer data across the network. a. bus b. star c. mesh d. ring ANSWER: c REFERENCES: page 305 44. A network that is connected in a ____ is one in which neighbors are connected only to neighbors. a. star b. mesh c. bus d. star-bus ANSWER: b REFERENCES: page 305 45. All wide area networks infrastructure are collections of ____ and interconnecting communication links. a. servers b. users c. switches d. nodes ANSWER: d REFERENCES: page 305 46. Statistical time-division multiplexing is sometimes called ____ time-division multiplexing. a. empirical b. random c. asynchronous d. synchronous ANSWER: c Copyright Cengage Learning. Powered by Cognero. Page 7 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks REFERENCES: page 314 47. ____ multiplexes multiple data streams onto a single fiber-optic line. a. Statistical time division multiplexing (Stat TDM) b. Wavelength division multiplexing (WDM) c. Time division multiplexing (TDM) d. Channel division multiplexing (CDM) ANSWER: b REFERENCES: page 316 48. ____ uses different wavelength (frequency) lasers to transmit multiple signals at the same time over a single medium. a. Wave division multiplexing b. Statistical time division multiplexing c. Channel division multiplexing d. Time division multiplexing ANSWER: a REFERENCES: page 316 49. ____ is designed for short-distance connections and has only a few lambdas, with greater space between lambdas. a. Dense wavelength division multiplexing (DWDM) b. Fixed wavelength division multiplexing (FWDM) c. Coarse wavelength division multiplexing (CWDM) d. Inverse wavelength division multiplexing (IWDM ANSWER: c REFERENCES: page 316 50. ____ division multiplexing is a good choice for connecting several lower-speed devices that do not transmit data on a continuous basis to a remote computer system. a. Statistical time b. Time c. Discrete tone d. Frequency ANSWER: a REFERENCES: page 314 51. ____ division multiplexing is a good technique for transmitting multiple concurrent signals over a fiber-optic line. a. Statistical time b. Synchronous time c. Frequency d. Wavelength ANSWER: d REFERENCES: page 316 52. ____ replaces any repetitions of the same bit or byte that occur in a sequence of data with a single occurrence of the bit/byte and a run count, or simply with a run count. a. Run-length encoding Copyright Cengage Learning. Powered by Cognero. Page 8 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks b. Lossy compression c. Random compression d. Full encoding ANSWER: a REFERENCES: page 321 53. A technique that can be used to compress data when a ____ compression is necessary is the Lempel-Ziv technique. a. random b. random c. lossy d. lossless ANSWER: d REFERENCES: page 321 54. ____ is a common form of audio compression. a. MPEG b. GIF c. MP3 d. JPEG ANSWER: c REFERENCES: page 322 55. ______ is a technique that is very commonly used to compress video images. a. JPEG b. MPEG c. MP3 d. AAA ANSWER: b REFERENCES: page 322 56. MPEG-1 and MPEG-2—or simply MPEG—are common examples of ____ compression. a. wavelength encoding b. differential encoding c. code division d. frequency encoding ANSWER: b REFERENCES: page 325 57. A classic algorithm that calculates a least-cost path through a network is ____ algorithm. a. Dijkstra’s router-finder b. Dijkstra’s safest-path c. Dijkstra’s min-path d. Dijkstra’s least-cost ANSWER: d REFERENCES: page 307 Copyright Cengage Learning. Powered by Cognero. Page 9 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks 58. The ____ protocol has a limit of 15 hops between routers. a. routing information b. OSPF c. IS-IS d. enhanced interior gateway routing ANSWER: a REFERENCES: page 309 59. Within OSPF, the ____link connects exactly two routers. a. dual b. bi-directional c. transient d. point-to-point ANSWER: d REFERENCES: page 311 60. Path-vector routing protocol communicates via ____-specific messages. a. BGP b. OSPF c. IS-IS d. RIP ANSWER: a REFERENCES: page 311 61. Cable television is still one of the more commonly found applications of ____ multiplex technique. a. TDM b. FDM c. WDM d. GSM ANSWER: b REFERENCES: page 315 62. In the context of multiplexing, ____ is sometimes used to send the same signal across multiple antennas. a. CWDM b. FDM c. MIMO d. TDM ANSWER: c REFERENCES: page 316 63. When used by 3G phone networks, the code division multiplexing is called ____. a. GSM b. DWDM c. CWDM Copyright Cengage Learning. Powered by Cognero. Page 10 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks d. CDMA ANSWER: d REFERENCES: page 318 64. When routing tables adapt to network changes, the routing system is called ____. a. mobile b. adaptative c. dynamic d. static ANSWER: c REFERENCES: page 308 65. With ____ routing, routing tables are created once, typically when the network is installed, and then never updated again. a. mobile b. adaptative c. dynamic d. static ANSWER: d REFERENCES: page 308 66. When something on the network changes, such as a failure or a configuration change, routers must identify the change and adjust their routes, the time it takes for this to happen is called ____ time. a. rerouting b. overhead c. convergence d. reconfiguration ANSWER: d REFERENCES: page 309 67. RIP has a 15 hops limit, and for its newer version (RIPv2), the hops limit is ____. a. decreased b. the same c. increased d. variable ANSWER: b REFERENCES: page 310 68. RIP has a ____ hops limit, unlike OSPF. a. 7 b. 15 c. 31 d. 63 ANSWER: b REFERENCES: page 309 Copyright Cengage Learning. Powered by Cognero. Page 11 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?  Stuvia.com - The Marketplace to Buy and Sell your Study Material Chapter 09: Wide Area Networks 69. Unlike OSPF, ____ can adapt to IPv6. a. GSM b. CDM c. IS-IS d. RIP ANSWER: c REFERENCES: page 311 70. ____ is the only routing protocol used across the open Internet and can span multiple autonomous systems. a. OSPF b. BGP c. IS-IS d. RIP ANSWER: b REFERENCES: page 311 71. ____ is the underlying technology behind applications such as GIF, PKZIP, WinZip, gzip, UNIX’s compress utility, and Microsoft’s compressed folders. a. Run-length encoding b. LZ77 c. MP3 d. MPEG ANSWER: b REFERENCES: page 321 72. A network that expands into a metropolitan area and exhibits high data rates, high reliability, and low data loss is called a(n) ___________________________________. ANSWER: metropolitan area network (MAN) metropolitan area network MAN MAN (metropolitan area network) REFERENCES: page 304 73. The technique of transmitting multiple signals over a single medium is ____________________. ANSWER: multiplexing REFERENCES: page 312 74. A(n) ____________________ is an assigned set of frequencies that is used to transmit the user’s signal. ANSWER: channel REFERENCES: page 315 75. In general, the device that accepts input from one or more users and transmits all these signals through a medium is called the ____________________. ANSWER: multiplexor mux REFERENCES: page 313 Copyright Cengage Learning. Powered by Cognero. Page 12 Downloaded by: t7dane502 | [email protected] Want to earn $1.236 Distribution of this document is illegal extra per year?