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- Question
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
- Correct Answer
- priority is programmable
- 1. 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
- 2. 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
- 3. 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 Discuss
- 4. 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
- 5. 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
- 6. 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
- 7. 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
- 8. An incremental backup
Options- A. should be done each month
- B. uses more tapes
- C. saves all files
- D. saves only files that have recently changed
- E. None of the above Discuss
- 9. The total time to prepare a disk drive mechanism for a block of data to be read from it is
Options- A. latency
- B. latency plus transmission time
- C. latency plus seek time
- D. latency plus seek time plus transmission time
- E. None of the above Discuss
- 10. File record length
Options- A. should always be fixed
- B. Should always be variable
- C. depends upon the size of the file
- D. should be chosen to match the data characteristics
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: sectors
Correct Answer: the command set being common across different hardware configurations
Correct Answer: used in all major commercial operating systems
Correct Answer: Literal table
Correct Answer: consists of those addresses that may be generated by a processor during execution of a computation.
Correct Answer: a program that automate the translation of assembly language into machine language.
Correct Answer: to improve disk performance
Correct Answer: saves only files that have recently changed
Correct Answer: latency plus seek time
Correct Answer: should be chosen to match the data characteristics
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