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- Question
Virtual memory is
Options- A. simple to implement
- B. used in all major commercial operating systems
- C. less efficient in utilization of memory
- D. useful when fast I/O devices are not available
- E. None of the above
- Correct Answer
- used in all major commercial operating systems
- 1. The table created by lexical analysis to describe all literals used in the source program, is
Options- A. Terminal table
- B. Literal table
- C. Identifier table
- D. Reductions
- E. None of the above Discuss
- 2. Virtual Memory
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
- 3. The disadvantages of "Compile and Go" loading scheme is (are):
Options- A. a portion of memory is wasted because the core occupied by the assembler is unavailable to the object program.
- B. it is necessary to retranslate the user's program deck every time it is run.
- C. it is very difficult to handle multiple segments, especially if the source programs are in different languages, and to produce orderly modular programs.
- D. all of the above
- E. None of the above Discuss
- 4. All the time a computer is switched on, its operating system software has to stay in
Options- A. main storage
- B. primary storage
- C. floppy disk
- D. disk drive
- E. None of the above Discuss
- 5. A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as
Options- A. multiprogramming
- B. multi threading
- C. broadcasting
- D. time sharing
- E. None of the above Discuss
- 6. The advantage of a command processor running only built-in commands is:
Options- A. flexibility to the users in running lists of commands by simply collecting them in named batch command files
- B. the command set being common across different hardware configurations
- C. users can create system programs and run them as commands
- D. the processing is much faster than would other-wise be the case when user defined commands are used
- E. None of the above Discuss
- 7. In a magnetic disk, data is recorded in a set of concentric tracks which are subdivided into
Options- A. periods
- B. sectors
- C. zones
- D. groups
- E. None of the above Discuss
- 8. Which of the following is not a characteristic of a daisy chaining priority control scheme?
Options- A. priority is programmable
- B. it is relatively easy to add more devices to the chain
- C. the failure of one device may affect other devices on the chain
- D. the number of control lines is independent of the number of devices on the chain
- E. None of the above Discuss
- 9. Assembler is
Options- A. a program that places programs into memory and prepares them for execution.
- B. a program that automate the translation of assembly language into machine language.
- C. a program that accepts a program written in a high level language and produces an object program.
- D. is a program that appears to execute a source program as if it were machine language.
- E. None of the above Discuss
- 10. Block or buffer caches are used
Options- A. to improve disk performance
- B. to handle interrupts
- C. to increase the capacity of main memory
- D. to speed up main memory read operation
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: Literal table
Correct Answer: consists of those addresses that may be generated by a processor during execution of a computation.
Correct Answer: all of the above
Correct Answer: primary storage
Correct Answer: multi threading
Correct Answer: the command set being common across different hardware configurations
Correct Answer: sectors
Correct Answer: priority is programmable
Correct Answer: a program that automate the translation of assembly language into machine language.
Correct Answer: to improve disk performance
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