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- Question
Which of the following is not true about the memory management?
Options- A. virtual memory is used only in multi-user systems
- B. segmentation suffers from external fragmentation
- C. paging suffers from internal fragmentation
- D. segmented memory can be paged
- E. None of the above
- Correct Answer
- virtual memory is used only in multi-user systems
- 1. If you want to execute more than one program at a time, the systems software you are using must be capable of:
Options- A. word processing
- B. virtual memory
- C. compiling
- D. multitasking
- E. None of the above Discuss
- 2. In analyzing the compilation of PL/I program, the description "resolving symbolic address (labels) and generating machine language" is associated with
Options- A. Assembly and output
- B. Code generation
- C. Storage assignment
- D. Syntax analysis
- E. None of the above Discuss
- 3. A program that converts a high-level language program to a set of instructions that can run on a computer is called a
Options- A. Compiler
- B. Debugger
- C. Editor
- D. All of the above
- E. None of the above Discuss
- 4. The system/370 assembler language
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. For how many processes which are sharing common data, the Dekker's algorithm implements mutual exclusion?
Options- A. 1
- B. 2
- C. 3
- D. 4
- E. None of the above Discuss
- 6. Scissoring enables
Options- A. a part of data to be displayed
- B. entire data to be displayed
- C. full data display on full area of screen
- D. no data to be displayed
- E. None of the above Discuss
- 7. Feed back queue
Options- A. are very easy to implement
- B. dispatch tasks according to execution characteristics
- C. are used to favor real-time tasks
- D. require manual intervention to implement properly
- E. None of the above Discuss
- 8. In memory systems, boundary registers
Options- A. are used for temporary program variable storage
- B. are only necessary with fixed partitions
- C. track page boundaries
- D. track the beginning and ending of programs
- E. None of the above Discuss
- 9. What is the name of the system which deals with the running of the actual computer and not with the programming problems?
Options- A. Operating system
- B. Systems program
- C. Object program
- D. Source program
- E. None of the above Discuss
- 10. The main function of the dispatcher (the portion of the process scheduler) is
Options- A. swapping a process to the disk
- B. assigning ready process to the CPU
- C. suspending some of the processes when the CPU load is high
- D. bring processes from the disk to the main memory
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: multitasking
Correct Answer: Assembly and output
Correct Answer: Compiler
Correct Answer: allows the programmer to write base registers and displacements explicitly in the source program.
Correct Answer: 2
Explanation:
Dekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra in his manuscript on cooperating sequential processes. It allows two threads to share a single-use resource without conflict, using only shared memory for communication.
It avoids the strict alternation of a naive turn-taking algorithm, and was one of the first mutual exclusion algorithms to be invented.
Source: http://en.wikipedia.org/wiki/Dekker's_algorithm
Correct Answer: a part of data to be displayed
Correct Answer: dispatch tasks according to execution characteristics
Correct Answer: track the beginning and ending of programs
Correct Answer: Systems program
Correct Answer: assigning ready process to the CPU
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