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  1. T. Transistors are simply small electronic switches that can be in either an on or an off state.
  2. T
  3. T. A capacitor consists of three parts: an emitter, a collector, and a base.
  4. F
  5. T. A truth table with two inputs would have two rows.
  6. F
  7. T. The Boolean OR operator returns a 1 only when either or both of the inputs are 1.
  8. T
  9. T. The AND operator has an output of 1 (true) only if both inputs are 0.
  10. F
  11. T. The combinations of gates enables the computer to do all the things that it does.
  12. T
  13. T. Each gate in a circuit reacts in a completely unpredictable way.
  14. F
  15. T. The OR gate allows two inputs and one output.
  16. T
  17. T. The NOR gate is a combination of an OR gate and a(n) NAND gate.
  18. F
  19. T. In the adder, the bits are added according to the rules of the hexadecimal numbering system.
  20. F
  21. T. Decoder circuits perform functions such as addressing memory and selecting I/O devices.
  22. T
  23. T. The flip-flop circuit latches onto a bit and maintains the output state until it's changed.
  24. T
  25. T. Boolean expressions cannot be used to accurately predict what a circuit will do.
  26. F
  27. T. The computer has a crystal clock called a control clock that times, or synchronizes, each of the steps in the fetch-execute cycle.
  28. F
  29. T. Control wires contain the binary data that is being read from or written to memory and I/O.
  30. F
  31. T. Bus wires are divided into six separate signal groups.
  32. F
  33. T. The bus signal group data contains a clock-timing signal for the bus as well as other wires pertaining to timing and the bus protocol.
  34. F
  35. T. ROM isn't erased when the computer power goes off.
  36. T
  37. T. RAM is volatile, meaning that when the power goes off, RAM is cleared.
  38. T
  39. T. The most commonly used form of mass storage is the floppy disk drive.
  40. F
  41. T. Flash memory is nonvolatile.
  42. T
  43. T. There are seven levels of RAID.
  44. T
  45. T. The mouse serves as a primary input device.
  46. T
  47. T. CRT displays are much thinner and run at a much cooler temperature than LCD monitors.
  48. F
  49. T. Interrupt handling is a much more efficient method for processing I/O than polling.
  50. T
  51. M. By switching on and off, the ____ can be used to represent the 1s and 0s that are the foundation of all that goes on in the computer.
  52. A. Capacitor
  53. B. Transistor
  54. C. Resistor
  55. D. Inductor
  56. B
  57. M. _____ algebra is concerned with the logic of the operators AND, OR, and NOT.
  58. A. Linear
  59. B. Modern
  60. C. Boolean
  61. D. Fibonacci
  62. C
  63. M. The ____ operator works with a single input, and its purpose is to reverse the input.
  64. A. XOR
  65. B. NOT
  66. C. AND
  67. D. OR
  68. B
  69. M. A transistor-based circuit in the computer that implements Boolean logic by creating a single output value for a given set of input values is known as a ____.
  70. A. Gate
  71. B. Register
  72. C. Thread
  73. D. Pin
  74. A
  75. M. The ____ gates are the basic building blocks of the CPU.
  76. A. XOR, AND, and NOT
  77. B. NAND and NOR
  78. C. AND, OR, and NOT
  79. D. NOR, NAND, and NOT
  80. C
  81. M. The NAND gate takes the output of the AND gate and then ____ it with the NOT gate.
  82. A. Reverses
  83. B. Amplifies
  84. C. Duplicates
  85. D. Scrambles
  86. A
  87. M. The truth table for the ____ gate indicates that the output is 1 only when the inputs are different.
  88. A. OR
  89. B. XOR
  90. C. AND
  91. D. NAND
  92. B
  93. M. A gate's output for any set of inputs follows the specifications given in the ____ table.
  94. A. Variable
  95. B. Data
  96. C. Log
  97. D. Truth
  98. D
  99. M. One of the main functions of the ____ of the computer's CPU is to add numbers.
  100. A. Controller
  101. B. ALU
  102. C. Memory
  103. D. Register
  104. B
  105. M. The high-speed cache memory in your computer is made of many thousands of ____ circuits.
  106. A. Adder
  107. B. Shifter
  108. C. Flip-flop
  109. D. Decoder
  110. C
  111. M. Vacuum tubes were replaced with ____.
  112. A. Transistors
  113. B. Diodes
  114. C. Capacitors
  115. D. Resistors
  116. A
  117. M. Very Large-Scale Integration (VLSI) chips contain ____ of circuits.
  118. A. Hundreds
  119. B. Thousands
  120. C. Millions
  121. D. Trillions
  122. C
  123. M. Most computers today are still based on the ____ architecture.
  124. A. Hilbert
  125. B. Turing
  126. C. Von Neumann
  127. D. Non Von
  128. C
  129. M. The portion of the CPU responsible for mathematical operations is the ____.
  130. A. Control Unit
  131. B. Registers
  132. C. Cache
  133. D. Arithmetic logic unit
  134. D
  135. M. One of the basics of Von Neumann architecture is the ____ cycle.
  136. A. Encrypt-encapsulate
  137. B. Edit-add
  138. C. Store-revise
  139. D. Fetch-execute
  140. D
  141. M. The term "____" refers to the family of components used to store programs and data.
  142. A. Registers
  143. B. Cache
  144. C. RAM
  145. D. Storage
  146. D
  147. M. RAM is called "____" because it doesn't have to be read sequentially.
  148. A. Relative
  149. B. Random
  150. C. Remedial
  151. D. Rapid
  152. B
  153. M. Hard disks are made up of one or more metal platters with a coating consisting of ____ particles.
  154. A. Magnetic
  155. B. Atomic
  156. C. Photonic
  157. D. Silicon
  158. A
  159. M. A 120-mm disc used to store data, music, and video in a computer system by using laser technology is known as a(n) ____.
  160. A. DRAM
  161. B. SRAM
  162. C. DDRAM
  163. D. CD-ROM
  164. D
  165. M. Keyboards, and most other I/O devices, connect to the main board through a(n) ____.
  166. A. Socket
  167. B. Adapter
  168. C. Channel
  169. D. Port
  170. D
  171. M. The process of painting an image on the screen of a monitor is called ____ scanning.
  172. A. Raster
  173. B. Roster
  174. C. Cathode
  175. D. dpi
  176. A
  177. M. Printer ____ ranges from 300 dpi to 2400 dpi for both inkjet and laser printers.
  178. A. Definition
  179. B. Variety
  180. C. Size
  181. D. Resolution
  182. D
  183. M. The sound card fits into the ____ bus expansion slot on the main board.
  184. A. SCSI
  185. B. PCI
  186. C. ISA
  187. D. System
  188. B
  189. M. When an I/O device places a voltage signal on a(n) ____ line, the associated chip checks its priority before passing it on to the CPU.
  190. A. Poll
  191. B. Job
  192. C. Interrupt
  193. D. JCL
  194. C
  195. M. Factors such as memory type, bus speed, and even hard drive speed can affect overall speed far more than the ____ clock.
  196. A. CPU
  197. B. Master
  198. C. ALU
  199. D. OS
  200. A
  201. T. The signal-to-noise measures the quality of a communications channel.
  202. T
  203. T. The bit error rate usually increases as the transfer rate decreases.
  204. F
  205. T. The most common guided medium has been silicon.
  206. F
  207. T. Unguided media cannot transmit or carry infrared light signals.
  208. F
  209. T. Impedance makes the electrical signals weaken as they travel along the wire.
  210. T
  211. T. Twisted pair cable has been a popular medium in the past, but it's being replaced in most instances by coaxial cables that are less expensive to produce and have even higher bandwidths.
  212. F
  213. T. Inductance doesn't apply to fiber-optics cables at all.
  214. T
  215. T. Fiber-optic cables are much more susceptible to attenuation than copper cables.
  216. F
  217. T. Wireless networking uses the same technology as the radio in your car and the cell phone in your pocket.
  218. T
  219. T. Without protocols, computers would not function.
  220. T
  221. T. Without protocols, there would be no Internet.
  222. T
  223. T. The Data Link layer of the OSI model uses routing protocols to select optimal paths between two end systems.
  224. F
  225. T. Layers in the OSI model are defined and designed to provide services for the process of communicating between computers.
  226. T
  227. T. The distinction between LANs and WANs is clear and well defined.
  228. F
  229. T. The computers attached to a network are often referred to as nodes.
  230. T
  231. T. There are six basic LAN topologies.
  232. F
  233. T. Fast Ethernet speeds do not exceed 10 Mbps.
  234. F
  235. T. Each physical device connected to a network must have a network interface card (NIC).
  236. T
  237. T. Repeaters alter the content of the data in the signals that they boost.
  238. F
  239. T. Gateways can be used to connect networks of different types or to connect mainframe computers to PCs.
  240. T
  241. T. Shifting the starting point of an audio waveform is known as frequency modulation.
  242. F
  243. T. You can compress information by replacing repeating patterns with a code.
  244. T
  245. T. The normal copper wire used in your home is capable is actually capable of speeds faster than to 1.5 Mbps.
  246. T
  247. T. DSL (digital subscriber line) technologies do not allow the upload speed to differ from the download speed.
  248. F
  249. T. Cable modems provide for differing upload and download speeds.
  250. T
  251. M. The PCI system bus consists of ____ wires.
  252. A. 10
  253. B. 20
  254. C. 98
  255. D. 198
  256. C
  257. M. ____ measures how much information can be carried in a given time period over a wired or wireless communication medium, usually measured in bits per second.
  258. A. Bandwidth
  259. B. Byte capacity
  260. C. Broadwidth
  261. D. Bit capacity
  262. A
  263. M. The tendency of a signal to become weaker over distance is known as ____.
  264. A. Alienation
  265. B. Amelioration
  266. C. Amplification
  267. D. Attenuation
  268. D
  269. M. ____ media are physical media such as copper wire or fiber-optic cable.
  270. A. Directed
  271. B. Guided
  272. C. Oriented
  273. D. Undirected
  274. B
  275. M. Twisting copper wires nearly eliminates the electromagnetic effect known as ____.
  276. A. Inductance
  277. B. Impedance
  278. C. Resistance
  279. D. Resonance
  280. A
  281. M. Fiber-optic cables use ____ fibers to guide light pulses along a cable.
  282. A. Plastic
  283. B. Glass
  284. C. Ceramic
  285. D. Tungsten
  286. B
  287. M. ____ transmissions are capable of transmission rates up to 4 Mbps.
  288. A. X-Ray
  289. B. Microwave
  290. C. Ultraviolet
  291. D. Infrared
  292. D
  293. M. A(n) ____ is a set of rules designed to facilitate communication.
  294. A. Protocol
  295. B. Accord
  296. C. Code
  297. D. Procedure
  298. A
  299. M. A(n) ____ diagram shows the protocol interactions between two entities.
  300. A. Assignment
  301. B. Timing
  302. C. Hierarchy
  303. D. Flow
  304. B
  305. M. The OSI conceptual model for the communication process has ____ discrete layers.
  306. A. Four
  307. B. Five
  308. C. Seven
  309. D. Nine
  310. C
  311. M. The Transport layer of the OSI model uses data units called ____.
  312. A. Bytegrams
  313. B. Bitgrams
  314. C. Words
  315. D. Datagrams
  316. D
  317. M. The ____ layer of the OSI model is responsible for formatting data so that it’s ready for presentation to an application.
  318. A. Session
  319. B. Presentation
  320. C. Data Link
  321. D. Application
  322. B
  323. M. Each layer in the OSI model is defined in terms of a(n) ____ and a protocol data unit.
  324. A. Header
  325. B. Abstract
  326. C. Brief
  327. D. Comment
  328. A
  329. M. A ____ is a small number of computers connected together in close proximity, usually in a building or complex.
  330. A. MAN
  331. B. DAN
  332. C. WAN
  333. D. LAN
  334. D
  335. M. Network configurations are often referred to as network ____.
  336. A. Structures
  337. B. Topologies
  338. C. Organizations
  339. D. Arrangements
  340. B
  341. M. In a ____ topology, a computers or a network device serves as a central point, or hub, for all messages.
  342. A. Bus
  343. B. Ring
  344. C. Star
  345. D. Grid
  346. C
  347. M. A widely used technology that has become an industry standard for LANs is ____.
  348. A. Ethernet
  349. B. Token ring
  350. C. FDDI
  351. D. ATM
  352. A
  353. M. ____ are small, special-purpose devices or computers used to connect two or more networks.
  354. A. Hubs
  355. B. Bridges
  356. C. Gateways
  357. D. Routers
  358. D
  359. M. A ____ is a device designed to protect an internal network or node from intentional or unintentional damage from an external network.
  360. A. Firewall
  361. B. Gate
  362. C. Fence
  363. D. Barricade
  364. A
  365. M. ____ convert binary digits into sounds by modulating or modifying a tone.
  366. A. Oscilloscopes
  367. B. Transformers
  368. C. Modems
  369. D. Transceivers
  370. C
  371. M. Normal copper wire is capable of carrying ____ voice channels.
  372. A. 4
  373. B. 16
  374. C. 24
  375. D. 48
  376. C
  377. M. A digital transmission link with a capacity of 1.544 Mbps is known as a ____ line.
  378. A. T1
  379. B. T2
  380. C. Broadband
  381. D. Satellite
  382. A
  383. M. Normal telephone voice-grade lines use ____-division multiplexing to divide up the bandwidth among the subscribers.
  384. A. Phase
  385. B. Frequency
  386. C. Amplitude
  387. D. Wave
  388. B
  389. M. Because of attenuation, a DSL subscriber is required to be no more than ____ feet away from the nearest telephone company switching station.
  390. A. 1,800
  391. B. 6,500
  392. C. 12,500
  393. D. 18,000
  394. D
  395. M. Cable modems are capable of speeds up to ____.
  396. A. 4.2 Mbps
  397. B. 42 Mbps
  398. C. 420 Mbps
  399. D. 42 Gbps
  400. B
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