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ggreetham Inglês 320 flashcards

Flashcards do conjunto (320)

  1. 1Transistors are simply small electronic switches that can be in either an on or an off stateTrue
  2. 2A capacitor consists of three parts: an emitter, a collector, and a baseFalse
  3. 3A truth table with two inputs would have two rowsFalse
  4. 4The Boolean OR operator returns a 1 only when either or both of the inputs are 1True
  5. 5The AND operator has an output of 1 (true) only if both inputs are 0False
  6. 6The combinations of gates enables the computer to do all the things that it doesTrue
  7. 7Each gate in a circuit reacts in a completely unpredictable wayFalse
  8. 8The OR gate allows two inputs and one outputTrue
  9. 9The NOR gate is a combination of an OR gate and a(n) NAND gateFalse
  10. 10In the adder, the bits are added according to the rules of the hexadecimal numbering systemFalse
  11. 11Decoder circuits perform functions such as addressing memory and selecting I/O devicesTrue
  12. 12The flip-flop circuit latches onto a bit and maintains the output state until it’s changedTrue
  13. 13Boolean expressions cannot be used to accurately predict what a circuit will doFalse
  14. 14The computer has a crystal clock called a control clock that times, or synchronizes, each of the steps in the fetch-execute cycleFalse
  15. 15Control wires contain the binary data that is being read from or written to memory and I/0False
  16. 16Bus wires are divided into six separate signal groupsFalse
  17. 17The bus signal group data contains a clock-timing signal for the bus as well as other wires pertaining to timing and the bus protocolFalse
  18. 18ROM isn’t erased when the computer power goes offTrue
  19. 19RAM is volatile, meaning that when the power goes off, RAM is clearedTrue
  20. 20The most commonly used form of mass storage is the floppy disk driveFalse
  21. 21Flash memory is nonvolatileTrue
  22. 22There are seven levels of RAIDTrue
  23. 23The mouse serves as a primary input deviceTrue
  24. 24CRT displays are much thinner and run at a much cooler temperature than LCD monitorsFalse
  25. 25Interrupt handling is a much more efficient method for processing I/0 than pollingTrue
  26. 26By 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 computerTransitor
  27. 27____ algebra is concerned with the logic of the operators AND, OR, and NOTBoolean
  28. 28The ____ operator works with a single input, and its purpose is to reverse the inputNOT
  29. 29A 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 ____Gate
  30. 30The ____ gates are the basic building blocks of the CPUAND, OR and NOT
  31. 31The NAND gate takes the output of the AND gate and then ____ it with the NOT gateReverses
  32. 32The truth table for the ____ gate indicates that the output is 1 only when the inputs are differentXOR
  33. 33A gate’s output for any set of inputs follows the specifications given in the ____ tableTruth
  34. 34One of the main functions of the ____ of the computer’s CPU is to add numbers.ALU
  35. 35The high-speed cache memory in your computer is made of many thousands of ____ circuitsFlip-flop
  36. 36Vacuum tubes were replaced with ____Transitors
  37. 37Very Large-Scale Integration (VLSI) chips contain ____ of circuits.Millions
  38. 38Most computers today are still based on the ____ architectureVon Neumann
  39. 39The portion of the CPU responsible for mathematical operations is the ____Arithmetic Logic Unit
  40. 40One of the basics of Von Neumann architecture is the ____ cycleFetch-Execute
  41. 41The term “____” refers to the family of components used to store programs and datStorage
  42. 42RAM is called “____” because it doesn’t have to be read sequentiallRandom
  43. 43Hard disks are made up of one or more metal platters with a coating consisting of ____ particlesMagnetic
  44. 44A 120-mm disc used to store data, music, and video in a computer system by using laser technology is known as a(n) ___CD-ROM
  45. 45eyboards, and most other I/O devices, connect to the main board through a(n) ____Port
  46. 46The process of painting an image on the screen of a monitor is called ____ scanningRaster
  47. 47Printer ____ ranges from 300 dpi to 2400 dpi for both inkjet and laser printersResolution
  48. 48The sound card fits into the ____ bus expansion slot on the main boardPCI
  49. 49When an I/O device places a voltage signal on a(n) ____ line, the associated chip checks its priority before passing it on to the CPUInterrupt
  50. 50Factors such as memory type, bus speed, and even hard drive speed can affect overall speed far more than the ____ clock.CPU
  51. 51The signal-to-noise ratio measures the quality of a communications channelTrue
  52. 52The bit error rate usually increases as the transfer rate decreasesFalse
  53. 53The most common guided medium has been siliconFalse
  54. 54Unguided media cannot transmit or carry infrared light signalsFalse
  55. 55Impedance makes the electrical signals weaken as they travel along the wireTrue
  56. 56Twisted 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 bandwidthsFalse
  57. 57Inductance doesn’t apply to fiber-optic cables at allTrue
  58. 58Fiber-optic cables are much more susceptible to attenuation than copper cablesFalse
  59. 59Wireless networking uses the same technology as the radio in your car and the cell phone in your pockeTrue
  60. 60Without protocols, computers would not functionTrue
  61. 61Without protocols, there would be no InternetTrue
  62. 62The Data Link layer of the OSI model uses routing protocols to select optimal paths between two end systemFalse
  63. 63Layers in the OSI model are defined and designed to provide services for the process of communicating between computers.True
  64. 64The distinction between LANs and WANs is clear and well definedFalse
  65. 65The computers attached to a network are often referred to as nodesTrue
  66. 66There are six basic LAN topologiesFalse
  67. 67Fast Ethernet speeds do not exceed 10 Mbps.False
  68. 68Each physical device connected to a network must have a network interface card (NIC).True
  69. 69Repeaters alter the content of the data in the signals that they boostFalse
  70. 70Gateways can be used to connect networks of different types or to connect mainframe computers to PCsTrue
  71. 71Shifting the starting point of an audio waveform is known as frequency modulatioFalse
  72. 72You can compress information by replacing repeating patterns with a codeTrue
  73. 73The normal copper wire used in your home is capable is actually capable of speeds faster than to 1.5 MbpsTrue
  74. 74DSL (digital subscriber line) technologies do not allow the upload speed to differ from the download speedFalse
  75. 75Cable modems provide for differing upload and download speedTrue
  76. 76The PCI system bus consists of ____ wires98
  77. 77____ measures how much information can be carried in a given time period over a wired or wireless communication medium, usually measured in bits per secondBandwitch
  78. 78The tendency of a signal to become weaker over distance is known as ____Attentuation
  79. 79____ media are physical media such as copper wire or fiber-optic cable.Guided
  80. 80Twisting copper wires nearly eliminates the electromagnetic effect known as ____.Inductance
  81. 81Fiber-optic cables use ____ fibers to guide light pulses along a cableGlass
  82. 82____ transmissions are capable of transmission rates up to 4 MbpsInfared
  83. 83A(n) ____ is a set of rules designed to facilitate communicationProtocol
  84. 84A(n) ____ diagram shows the protocol interactions between two entitiesTiming
  85. 85The OSI conceptual model for the communication process has ____ discrete layersSeven
  86. 86The Transport layer of the OSI model uses data units called ____.Datagrams
  87. 87The ____ layer of the OSI model is responsible for formatting data so that it’s ready for presentation to an applicationPresentation
  88. 88Each layer in the OSI model is defined in terms of a(n) ____ and a protocol data unitHeader
  89. 89A ____ is a small number of computers connected together in close proximity, usually in a building or complex.LAN
  90. 90Network configurations are often referred to as network ____Topologies
  91. 91In a ____ topology, a computers or a network device serves as a central point, or hub, for all messageStar
  92. 92A widely used technology that has become an industry standard for LANs is ____Ethernet
  93. 93____ are small, special-purpose devices or computers used to connect two or more networks.Routers
  94. 94A ____ is a device designed to protect an internal network or node from intentional or unintentional damage from an external networkFirewall
  95. 95____ convert binary digits into sounds by modulating or modifying a toneModems
  96. 96Normal copper wire is capable of carrying ____ voice channels24
  97. 97A digital transmission link with a capacity of 1.544 Mbps is known as a ____ lineT1
  98. 98Normal telephone voice-grade lines use ____-division multiplexing to divide up the bandwidth among the subscribers.Frequency
  99. 99Because of attenuation, a DSL subscriber is required to be no more than ____ feet away from the nearest telephone company switching station.18,000
  100. 100Cable modems are capable of speeds up to ____.42Mbps
  101. 101Without a database most applications would be uselessTrue
  102. 102A database management system (DBMS) provides an end-user interface with the databaseTrue
  103. 103A DBMS delegates the task of ensuring data integrity to the operating systemFalse
  104. 104A DBMS manages multiple users’ access to the databaseTrue
  105. 105An attribute is also called a relationFalse
  106. 106A collection of columns referring to one item is called a row or tupleTrue
  107. 107Indexes do not require additional storage space in the databaseFalse
  108. 108The information stored in a database is kept in natural or sequential order.True
  109. 109From a database design point of view, first normal form is better than second normal formFalse
  110. 110You could define a database table based on unnormalized tables, but redundancies and dependencies can cause problems when the table is in use.True
  111. 111A determinant is also called a composite keyFalse
  112. 112A column is functionally dependent on another column if for each value of the first column, there is only one value for the second columnTrue
  113. 113The third normal form creates columns that are independent of the primary keyFalse
  114. 114The main rules in database design are the second and third normal formsFalse
  115. 115A one-to-many relationship is the most common relationshipTrue
  116. 116One-to-one relationships are very commonFalse
  117. 117The RETURN BY clause enables you to change how data is returned from the SELECT statementFalse
  118. 118There are many SQL commands for maintaining, defining, and administering the data in a databaseTrue
  119. 119SQL deals with only the data you want to see.True
  120. 120SQL commands may not be lowercaseFalse
  121. 121Every column must be initialized with dataFalse
  122. 122The order of the fields in the SELECT statement doesn’t have to match that of the defined table structureTrue
  123. 123The MORE clause in a SQL SELECT statement specifies additional criteria for retrieving data from a tableFalse
  124. 124In relation to refining searches, the keyword AND indicates that all criteria must be metTrue
  125. 125By default, the SELECT statement returns data in no particular orderFalse
  126. 126Data that has been organized and logically related to allow access, retrieval, and use of that data is called a ____Database
  127. 127A special language known as ____ is used to query or extract information from databasesStructured Query Language
  128. 128____ was one of the computer scientists at IBM creating a theoretical model for designing data structuresE.F. Codd
  129. 129A DBMS helps manage data and extract information from a database by using a(n) ____ language.Query
  130. 130A ____ or entity is arranged into rows or columns much like a spreadsheetTable
  131. 131The set of possible values for each column is called the ____ of that columnDomain
  132. 132A(n) ____ is a special type of file that occupies its own space and specifies one or more columns that determine how information stored in a table can be accessed more efficientlyIndex
  133. 133When the columns are used to determine the sort order of information, they are called sort ____.Keys
  134. 134The set of rules that dictates how databases are designed is called ____Normalization
  135. 135To put the table into the ____ normal form, any columns containing two values need to be separated into two rows.First
  136. 136A ____ key is simply a column or combination of columns that uniquely identifies a row within a table.Primary
  137. 137A(n) ____ key is a primary key made up of more than one column.Composite
  138. 138Placing a table into second normal form eliminates ____ of data.Repetition
  139. 139A(n) ____ dependency exists when one column is dependent on another column that isn’t the primary keyTransitive
  140. 140A(n) ____ defines how one table (entity) works with or relates to anotherRelationship
  141. 141A(n) ____ key is a column in one table that relates to the primary key in another.Foreign
  142. 142A visual representation of how all the tables or entities interact and relate to each other in a database is called a(n) ____ relationship model.Entity
  143. 143____ shows the numeric occurrences between entities in an ER modelCardinality
  144. 144Which of following is a valid SQL command for constructing a table?CREATE TABLE
  145. 145The keyword ____ indicates that data is not required for a specified columnNULL
  146. 146SQL statements are closed with a(n) ____.Semicolon
  147. 147The ____ statement is used to add new rows of data to a table.INSERT INTO
  148. 148The ____ statement is the most commonly used SQL statementSELECT
  149. 149If you want to arrange the data more meaningfully when using the SELECT statement, you can specify the ____ column names.ORDER BY
  150. 150If you want data returned in descending order, you simply place the keyword ____ next to the column in the ORDER BY clauseDESC
  151. 151Every computer game, program, picture, or sound is stored in the computer as a series of decimal digitsFalse
  152. 152Negative powers are used to represent the fractional portion of numbersTrue
  153. 153The hexadecimal numbering system has seventeen unique digitsFalse
  154. 154The hexadecimal numbering system uses letters to represent digits beyond nineTrue
  155. 155The term radix is synonymous with positional value.False
  156. 156For any quantity, there’s a number in any base to represent it.True
  157. 157A counting table can be used to convert numbers from one base to another.True
  158. 158Adding numbers in other bases follows nearly the same steps as in decimal numbers.True
  159. 159The difference between adding numbers in base 10 and any other base lies in the carry process.True
  160. 160You cannot multiply or divide any base.False
  161. 161Half of a byte is sometimes referred to as a nibbleTrue
  162. 162Computer scientists sometimes use hexadecimal as a shorthand method for representing binary valuesTrue
  163. 163Whole numbers, or integer numbers, can be represented internally in a computer as hexadecimal numbers.False
  164. 164Signed and unsigned numbers in a computer are designed to always take up a different number of bits.False
  165. 165Negative fractional numbers cannot be internally represented in a computer.False
  166. 166The Unicode character standard is compatible with the extended ASCII standard.True
  167. 167The Unicode method of character representation is fast becoming obsolete.False
  168. 168The number of pixels in each row and column defines a display device’s resolution.True
  169. 169A common resolution on a PC monitor is 1024 x 768, which means the monitor is displaying 1024 rows with 768 dots, or pixels, in each row.False
  170. 170As the resolution numbers get larger for a monitor, the size of each pixel gets larger.False
  171. 171Sounds are stored in the computer in a manner very similar to images.True
  172. 172The number of words used for each sound sample determines how many unique amplitude levels can be represented.False
  173. 173Raw audio samples are often stored in uncompressed file formats, such as WAV files.True
  174. 174It is not possible to learn to program or to manage a database without understanding binary and hexadecimal number systems.False
  175. 175Displays containing the contents of a computer’s memory or the hard disk are often referred to as ____ memory dumps.Hexadecimal
  176. 176The number 10-4 evaluates to ____.0.00001
  177. 177A ____ is identified by the number of digits a numbering system has, including the digit 0.Base
  178. 178The concept of ____ value exists in all numbering bases.Positional
  179. 179According to positional value, the binary number 10012 represents ____ things.9
  180. 180____ values are used to calculate how many of something a number represents.Positional
  181. 181A ____ value is calculated by raising the base to the power indicated by the position.Positional
  182. 182The letters ____ are used in hexadecimal to represent numeric values above 9.A-F
  183. 183To use the Windows calculator to convert between hex, binary, and decimal make sure the calculator is in the ____ view.Scientific
  184. 184A group of 8 bits considered as one unit is known as a ____.Byte
  185. 185Each 1 and 0 (on and off ) in a computer is referred to as a ____.Bit
  186. 186Larger groups of bits (more than 8) are referred to as ____.Words
  187. 187When separating these binary digits into groups of four, you must begin grouping on the ____.Right
  188. 188When converting from hex to binary, each hexadecimal digit corresponds to a(n) ____-bit binary pattern.4
  189. 189____ complement is a method of representing negative numbers in a computer system.Twos
  190. 190To find the ____ of a given bit, flip it to the opposite state.Complement
  191. 191In scientific notation, the method of displaying numbers uses a(n) ____ and an exponent.Mantissa
  192. 192The eight bit extended ASCII (American Standard Code for Information Interchange) character set can be used to represent ____ characters.256
  193. 193A ____ is the smallest unit that can be displayed on a computer monitor.Pixel
  194. 194Each pixel is stored in the computer as a(n) ____ pattern containing information about its color and brightness.Binary
  195. 195Unicode character representation uses a(n) ____-bit standard.16
  196. 196JPG and GIF are examples of ____ image formats.Compressed
  197. 197A sound consists of a waveform with amplitude (volume) and ____ (pitch).Frequency
  198. 198The computer samples sounds at fixed intervals and each sample is assigned a binary value according to its ____.Amplitude
  199. 199Which of the following is an example of a video compression format?MPEG
  200. 200The MCP is the software “control center” of modern computer systems.False
  201. 201The operating system is the first program loaded into memory when the computer starts (boots).True
  202. 202The operating system is the first program loaded into memory when the computer starts (boots).True
  203. 203When power is turned on, the CPU begins executing the instructions stored in the CMOS chip.False
  204. 204An OS can reside on a ROM chip.True
  205. 205Applications cannot be designed to run on multiple platforms.False
  206. 206Clients are computers that are used to service many different users.False
  207. 207Every multipurpose device with a CPU must also have an OS.True
  208. 208DOS and Linux use a graphical user interface.False
  209. 209The Windows operating system no longer provides a command-line interface.False
  210. 210In Windows you can view running processes by pressing Ctrl+Alt+Delete to open Task Manager and then clicking the Processes tab to display information on all running processes.True
  211. 211Von Neumann architecture supports the parallel execution of instructions.False
  212. 212The parts of a computer system, such as the CPU, memory, keyboard, monitor, and network adapter, function at different speeds.True
  213. 213I/O devices will always work correctly from the basic installation in the environment in which they’re installed.False
  214. 214Plug and Play was intended to create a computer with hardware and software that worked together to configure devices and assign resources automatically, making hardware changes and additions easier.True
  215. 215Deadlock issues are always resolved without the intervention of the operating system.True
  216. 216Operating systems are responsible for protecting memory and other resources.True
  217. 217Files can be viewed as leaves (nodes) on a tree structure.True
  218. 218You can practice DOS commands by opening a DOS command window in Windows.False
  219. 219Linux commands have what are called command-line switches (sometimes called parameters or flags), used in the format: ls -lrtTrue
  220. 220Windows and Linux use the fdisk command to partition hard drives.True
  221. 221Formatting can be used to place a copy of the OS on the disk so that it can be used as a boot disk.True
  222. 222You cannot create child folders inside user-created folders.False
  223. 223The parent-child structure has nearly unlimited depth.True
  224. 224In general, folder names must start with a letter and can include additional numbers or letters and some special characters, up to a maximum length of 255 characters.True
  225. 225Command-line OSs such as Linux allow recovering folders and files after they have been deleted.False
  226. 226Command-line OSs such as Linux allow recovering folders and files after they have been deleted.False
  227. 227Interface programs that allow a computer to interact with peripheral devices are called ____.Drivers
  228. 228The ____ is the core of the OS.Kernel
  229. 229The OS running on a computer is often called its ____ and is typically tied to a particular CPU.Platform
  230. 230Coordinated execution of a process, using two or more CPUs at the same time is known as ____.Multiprocessing
  231. 231A ____ operating system is an OS designed to provide strong network services.Network
  232. 232____ is a primary function of an operating system.Managing Resources
  233. 233DOS and Linux use a(n) ____-line interface and are sometimes called console operating systems.Command
  234. 234A small program running on a computer is known as a ____.Process
  235. 235____ was designed to accommodate multiple users and multiple tasks.Linux
  236. 236Time ____ is a method of allocating fixed time units to running processes so that it appears to users that all processes are running simultaneously.Slicing
  237. 237When an interrupt occurs, the CPU stops what it’s doing and goes to a program in memory called a(n) ____ handler.Interrupt
  238. 238When an interrupt occurs, the CPU stops what it’s doing and goes to a program in memory called a(n) ____ handler.Interrupt
  239. 239A rare situation in which processes are waiting for each other for use of resources is known as ____.Deadlock
  240. 240All programs and processes running on a computer are stored in ____.RAM
  241. 241OSs allow you to organize files into structures called folders or ____.Directories
  242. 242____ are an area of a hard disk reserved to hold files of a particular OS type.Partitions
  243. 243In Linux, entering ____command gives you the manual pages with information on the command you specify.man
  244. 244In Linus, to exit manual pages, simply type “____.”q
  245. 245The process of ____ arranges the disk surface into addressable areas and sets up the basic directory tree structure on the disk.Formatting
  246. 246The ____ command enables Linux to partition a disk drive.fdisk
  247. 247In Windows ____, you can browse the tree structures of your drives.Explorer
  248. 248In Windows, deleted files and folders reside in the ____ Bin folder until it is emptied.Recycle
  249. 249____ are symbols that are used to match any character and are used in selecting files or directories.Wildcards
  250. 250Wildcard specifications are case sensitive in ____.Linux
  251. 251Partitioning, ____, and creating folders are done to prepare the drive to receive files.Formatting
  252. 252Moving files is similar to ____ files.Copying
  253. 253B2C e-commerce is a useful tool for connecting business partners in a virtual supply chain to cut resupply times and reduce costs.False
  254. 254Producers or providers of consumer products using B2C e-commerce must use middlemen, or intermediaries, between them and the consumer.False
  255. 255G2B applications are designed to improve communications among the various levels of government.False
  256. 256E-commerce relies on the use of wireless devices, such as personal digital assistants, cell phones, and smartphones, to place orders and conduct business.False
  257. 257Each e-commerce Web site must have Web server software to perform fundamental services, including security and identification, retrieval and sending of Web pages, Web site tracking, Web site development, and Web-page development.True
  258. 258A server that handles dynamic content must be able to access information from a variety of databases.True
  259. 259The use of open database connectivity enables the Web server to assemble information from different database management systems, such as SQL Server, Oracle, and Informix.True
  260. 260Product configuration software tools were originally developed in the 1960s to assist B2C salespeople to match their company’s products to customer needs.False
  261. 261E-commerce software must support five core tasks: catalog management, product configuration, shopping cart facilities, e-commerce transaction processing, and Web traffic data analysis.True
  262. 262For m-commerce to work effectively, the interface between the wireless device and its user must improve to the point that it is nearly as easy to purchase an item on a wireless device as it is to purchase it on a PC.True
  263. 263A user with a WAP-compliant device uses the built-in microbrowser to make a WML request.True
  264. 264A CA is responsible for guaranteeing that the people or organizations that are granted unique digital certificates are, in fact, who they claim to be.True
  265. 265The DSL communications protocol includes a handshake stage, which authenticates the server (and the client, if needed), determines the encryption and hashing algorithms to be used, and exchanges encryption keys.False
  266. 266Credit cards are better protected from misuse than conventional smart, charge, and debit cards because the credit-card information is encrypted.False
  267. 267A smart card makes credit theft practically impossible because a key to unlock the encrypted information is required, and there is no external number that a thief can identify and no physical signature a thief can forge.True
  268. 268Enterprise systems employ a database of key operational and planning data that can be shared by all.True
  269. 269Web services can combine software and services from different companies to provide an integrated way to communicate.True
  270. 270A characteristic of an online transaction processing system is that there is some delay between an event and the eventual processing of the related transaction to update the organization’s records.False
  271. 271Often, results from one TPS flow downstream to become input to other systems.True
  272. 272Systems design attempts to answer the questions “What is the problem, and is it worth solving?”False
  273. 273Systems investigation attempts to answer the question “What must the information system do to solve the problem?”False
  274. 274Systems design seeks to answer the question “How will the information system do what it must do to obtain the problem solution?”True
  275. 275Systems analysis details system outputs, inputs, and user interfaces; specifies hardware, software, database, telecommunications, personnel, and procedure components; and shows how these components are related.False
  276. 276Systems design results in an installed, operational information system that meets the business needs for which it was developed.False
  277. 277Prototyping begins with creating a preliminary model of a major subsystem or a scaled- down version of the entire system.True
  278. 278Agile development requires frequent face-to-face meetings with the systems developers and users as they modify, refine, and test how the system meets users’ needs and what its capabilities are.True
  279. 279XP uses pairs of programmers who work together to design, test, and code parts of the systems they develop.True
  280. 280JAD often uses group support systems (GSSs) software to foster positive group interactions, while suppressing negative group behavior.True
  281. 281Legal feasibility can include logistical and motivational (acceptance of change) considerations.False
  282. 282Legal feasibility involves an analysis of existing and future laws to determine the likelihood of legal action against the systems development project and the possible consequences.True
  283. 283The object-oriented approach can be used during all phases of systems development, from investigation to maintenance and review.True
  284. 284The primary outcome of systems analysis is a prioritized list of systems requirements.True
  285. 285Data modeling is most often accomplished through the use of entity-relationship (ER) diagrams.True
  286. 286Activity modeling is often accomplished through the use of data-flow diagrams.True
  287. 287DFDs work on the premise that every activity involves some communication, transference, or flow that can be described as a data element.True
  288. 288The primary result of the systems maintenance phase is a technical design that details system outputs, inputs, and user interfaces; specifies hardware, software, databases, telecommunications, personnel, and procedures; and shows how these components are related.False
  289. 289A sequence of events is often called an interface, and can be diagrammed in a sequence diagram.False
  290. 290Parallel start-up involves running the new system for one group of users rather than all users.False
  291. 291Pilot start-up involves running both the old and new systems for a period of time.False
  292. 292A ____ is a professional who specializes in analyzing and designing business systems.Systems analyst
  293. 293In systems development, the ____ is responsible for modifying or developing programs to satisfy user requirements.Programmer
  294. 294In the ____ phase of the SDLC, potential problems and opportunities are identified and considered in light of the goals of the business.Systems Investigation
  295. 295The ____ phase of the SDLC involves studying existing systems and work processes to identify strengths, weaknesses, and opportunities for improvement.Systems analysis
  296. 296The primary result of the ____ phase is a technical design that either describes the new system or describes how existing systems will be modified.Systems design
  297. 297____ involves creating or acquiring the various system components detailed in the systems design, assembling them, and placing the new or modified system into operation.Systems Implantation
  298. 298____ takes an iterative approach to the systems development process. During each iteration, requirements and alternative solutions to the problem are identified and analyzed, new solutions are designed, and a portion of the system is implemented.Prototyping
  299. 299____ employs tools, techniques, and methodologies designed to speed application development.Rapid Application Assessment
  300. 300RAD makes extensive use of the ____ process for data collection and requirements analysis.Joint application development
  301. 301____ combine(s) the logic of the systems development life cycle with the power of object-oriented modeling and programming.Object-oriented systems development
  302. 302The ____ is a document that is filled out by someone who wants the IS department to initiate systems investigation.Systems request form
  303. 303____ feasibility is concerned with whether the hardware, software, and other system components can be acquired or developed to solve the problem.Technical
  304. 304____ feasibility determines whether the project makes financial sense and whether predicted benefits offset the cost and time needed to obtain them.Economic
  305. 305____ feasibility determines whether laws or regulations can prevent or limit a systems development project.Legal
  306. 306____ feasibility is a measure of whether the project can be put into action or operation.Operational
  307. 307The ____ report summarizes the results of systems investigation and the process of feasibility analysis and recommends a course of action: continue on into systems analysis, modify the project in some manner, or drop it.Systems investigation
  308. 308With ____, one or more members of the analysis team directly observe the existing system in action.Direct Observation
  309. 309When many data sources are spread over a wide geographic area, ____ might be the best approach to data collection.Questionnaires
  310. 310____ is the manipulation of the collected data so that the development team members who are participating in systems analysis can use the data.Data analysis
  311. 311____ is a commonly accepted approach to modeling organizational objects and associations that employ both text and graphics.Data Modeling
  312. 312A(n) ____ models objects, associations, and activities by describing how data can flow between and around various objects.Data flow diagram
  313. 313The purpose of ____ is to answer the question “How will the information system solve a problem?”Systems design
  314. 314____ is a description of the functional requirements of a system.Logical design
  315. 315____ is the specification of the characteristics of the system components necessary to put the logical design into action.Physical design
  316. 316A(n) ____ is the primary result of systems design, reflecting the decisions made and preparing the way for systems implementation.Design report
  317. 317____ includes hardware acquisition, programming and software acquisition or development, user preparation, hiring and training of personnel, site and data preparation, installation, testing, start-up, and user acceptance.Systems Implementation
  318. 318The preparation of the location of a new system is called ____.Site preparation
  319. 319____ involves making sure that all files and databases are ready to be used with new computer software and systems.Data conversion
  320. 320____ is the final step of systems development, involving the analysis of systems to make sure that they are operating as intended.Systems review

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FlashCards sobre Untitled, criado por ggreetham em 06-05-2013.
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ggreetham
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