All of the following statements are correct for processors and processing power, except:
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1 .The basic differences between a file-orientedsystem and a database management system (DBMS) include the following. I. The file-oriented system focuses on individual applications, each with its own set of files and with each file physically separate from the other files. II. In the database management system, the focus is on data rather than a particular application. This leads to data independence, data standardization, one-time data entry, data security, and shared data ownership.
A Only II. B Only I. C Both I and II. D Neither I nor II.
2 .Advantages of a database management system(DBMS) include: I. Reduced data redundancy and inconsistencies. II. Inability to expand data fields without affecting application programs. III. Data accessibility increases the timeliness, effectiveness, and availability of information.
A II and III. B I and III. C I and II. D I, II, and III.
3 .Disadvantages of a database management system(DBMS) include: I. Less highly trained technical personnel are required. II. Increased vulnerability as a common database is highly integrated. A breakdown in hardware or software has a much more severe effect than in a system having separate files and applications. III. Audit trails being somewhat obscured as the result of movement of data from one file to another.
A I and II. B I and III. C I, II, and III. D II and III.
4 .All of the following are examples of computer software, except a(n):
A Operating system. B Language translator. C Database management system. D Modem.
5 .Which of the following statements is (are)correct for computer hardware? I. Virtual memory is memory where portions of a program that are not being executed are stored, but it is not real memory. II. Virtual memory is that portion of real memory where portions of a program that are not being executed are stored. III. RAID is disk storage where multiple inexpensive disk drives are combined into an array.
A I and II only are correct. B I and III only are correct. C II and III only are correct. D III only is correct.
7 .Which of the following statements is (are)correct for application software? I. Application software can be purchased or developed internally. If application software is purchased, the purchase is of the software itself, and the purchaser can do whatever it wishes with the software. II. When application software is purchased, the purchaser invariably receives a copy of the source code and, for large applications, the source code is escrowed. Escrow of the source code protects the software vendor if the purchaser fails to live up to its contractual obligations. III. When application software is purchased, maintenance for that software may or may not be purchased. Maintenance is normally updates and support.
A I, II, and III are correct. B II and III only are correct. C III only is correct. D I and II only are correct.
8 .All of the following statements are correct for a telecommunications network, except:
A Routers connect different types of networks, and gateways route packets of data through interconnected LANs. B A communication or network protocol is the set of rules that allows the various pieces of hardware and software that are included in the network to communicate. C Some of the functions of...
9 .Most client/server applications operate on a three-tiered architecture consisting of which of the following layers?
A Desktop client, application, and database. B Desktop server, software, and hardware. C Desktop client, software, and hardware. D Desktop server, application, and database.
10 .Stonehenge Corporation utilizes severaldatabase management systems in its various application systems running at datacenter just north of London, England. Which of the following statements is/arecorrect for these databases? I. In a relational database, the data are stored in two-dimensional tables that are implemented by indexes and linked lists. II. Normalization is the process of separating data into logical tables. III. Object-oriented databases can be used to store comments, drawings, images, voice, and video that do not normally fit into more structured databases. Object-oriented databases are normally faster than relational databases.
A I, II, and III are correct. B II and III only are correct. C II only is correct. D III only is correct.
