Operating Systems Concepts problems
- 1. Data encryption
Options- A. is mostly used by public networks
- B. is mostly used by financial networks
- C. cannot be used by private installations
- D. is not necessary, since data cannot be intercepted
- E. None of the above Discuss
Correct Answer: is mostly used by financial networks
- 2. The SJF algorithm executes first the job
Options- A. that last entered the queue
- B. that first entered the queue
- C. that has been in the queue the longest
- D. with the least processor needs
- E. None of the above Discuss
Correct Answer: with the least processor needs
- 3. Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because
Options- A. they are memory resident
- B. they are initially stored on disk
- C. they are available on magnetic tapes
- D. they are partly in primary memory and partly on disk
- E. None of the above Discuss
Correct Answer: they are initially stored on disk
- 4. Which, of the following is not true about the description of a decision table?
Options- A. A decision table is easy to modify
- B. A decision table is directly understood by the computer
- C. A decision table is easy to understand
- D. All of the above
- E. None of the above Discuss
Correct Answer: A decision table is directly understood by the computer
- 5. Multiprogramming
Options- A. is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
- B. consists of those addresses that may be generated by a processor during execution of a computation.
- C. is a method of allocating processor time.
- D. allows multiple programs to reside in separate areas of core at the time.
- E. None of the above Discuss
Correct Answer: allows multiple programs to reside in separate areas of core at the time.
- 6. What is the name given to the process of initializing a microcomputer with its operating system?
Options- A. Cold booting
- B. Booting
- C. Warm booting
- D. Boot recording
- E. None of the above Discuss
Correct Answer: Booting
- 7. A file organization component of a VSAM file is:
Options- A. relative record data set
- B. keyed sequential data set
- C. entry sequential data set
- D. all of the above
- E. None of the above Discuss
Correct Answer: all of the above
- 8. Which is a permanent database in the general model of compiler?
Options- A. Literal Table
- B. Identifier Table
- C. Terminal Table
- D. Source code
- E. None of the above Discuss
Correct Answer: Terminal Table
- 9. The function(s) of the Syntax phase is(are)
Options- A. to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
- B. to build a literal table and an identifier table
- C. to build a uniform symbol table
- D. to parse the source program into the basic elements or tokens of the language.
- E. None of the above Discuss
Correct Answer: to recognize the major constructs of the language and to call the appropriate action routines that will generate the intermediate form or matrix for these constructs.
- 10. The file structure that redefines its first record at a base of zero uses the term:
Options- A. relative organization
- B. key fielding
- C. dynamic reallocation
- D. hashing
- E. None of the above Discuss
Correct Answer: relative organization
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