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- Question
A critical region is
Options- A. a program segment that has not been proved bug-free
- B. a program segment that often causes unexpected system crashes
- C. a program segment where shared resources are accessed
- D. one which is enclosed by a pair of P and V operations on semaphores
- E. none is the above
- Correct Answer
- one which is enclosed by a pair of P and V operations on semaphores
- 1. The command interpreter
Options- A. is usually the primary user interface
- B. requires fixed format commands
- C. is menu drive
- D. is quite different from the SCL interpreter
- E. None of the above Discuss
- 2. Indicate which, of the following, is not true about Nassi-Shneiderman charts
Options- A. These charts are type of graphical design tool
- B. These charts cannot represent CASE constructs
- C. These charts can represent three fundamental control structures
- D. All of the above
- E. None of the above Discuss
- 3. Capacity planning
Options- A. requires detailed system performance information
- B. is independent of the operating system
- C. does not depend on the monitoring tools available
- D. is not needed in small installations
- E. None of the above Discuss
- 4. A base register table
Options- A. allows the programmer to write base registers and displacements explicitly in the source program.
- B. is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain.
- C. allows multiple programs to reside in separate areas of core at the same time.
- D. is a term that refers to the control programs of an operating system.
- E. None of the above Discuss
- 5. In which addressing mode, the address of the location of the operand is given explicitly as a part of the instruction.
Options- A. absolute mode
- B. immediate mode
- C. index mode
- D. modulus mode
- E. None of the above Discuss
- 6. Which of the following statements is false?
Options- A. a process scheduling algorithm is preemptive if the CPU can be forcibly removed from a process
- B. time sharing systems generally use preemptive CPU scheduling
- C. response time are more predictable in preemptive systems than in non preemptive systems
- D. real time systems generally use non-preemptive CPU scheduling
- E. None of the above Discuss
- 7. Uniform Symbols Table
Options- A. contains all constants in the program
- B. a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure.
- C. consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
- D. a permanent table which lists all key words and special symbols of the language in symbolic form.
- E. None of the above Discuss
- 8. Backups should be done
Options- A. daily for most installations
- B. weekly for most installations
- C. as several image copies, followed by an incremental
- D. as several incrementals, followed by an image copy
- E. None of the above Discuss
- 9. A task in a blocked state
Options- A. is executable
- B. is running
- C. must still be placed in the run queues
- D. is waiting for same temporarily unavailable resources
- E. None of the above Discuss
- 10. Which of the following capabilities is required for a system program to execute more than one program at a time?
Options- A. word processing
- B. compiling
- C. virtual memory
- D. multitasking
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: is usually the primary user interface
Correct Answer: These charts cannot represent CASE constructs
Correct Answer: is independent of the operating system
Correct Answer: is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain.
Correct Answer: absolute mode
Correct Answer: real time systems generally use non-preemptive CPU scheduling
Correct Answer: consists of a full or partial list of the token's as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation
Correct Answer: as several incrementals, followed by an image copy
Correct Answer: is waiting for same temporarily unavailable resources
Correct Answer: multitasking
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