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- Question
Trojan-Horse programs
Options- A. are legitimate programs that allow unauthorized access
- B. do not usually work
- C. are hidden programs that do not show up on the system
- D. usually are immediately discovered
- E. None of the above
- Correct Answer
- are legitimate programs that allow unauthorized access
- 1. System programs such as Compilers are designed so that they are
Options- A. reenterable
- B. non reusable
- C. serially usable
- D. recursive
- E. None of the above Discuss
- 2. A development strategy whereby the executive control modules of a system are coded and tested first, is known as
Options- A. Bottom-up development
- B. Top-down development
- C. Left-Right development
- D. All of the above
- E. None of the above Discuss
- 3. When did IBM release the first version of disk operating system DOS version 1.0?
Options- A. 1981
- B. 1982
- C. 1983
- D. 1984
- E. None of the above Discuss
- 4. The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk, is known as
Options- A. multiprogramming
- B. spooling
- C. caching
- D. virtual programming
- E. None of the above Discuss
- 5. The action of parsing the source program into the proper syntactic classes is known as
Options- A. syntax analysis
- B. lexical analysis
- C. interpretation analysis
- D. general syntax analysis
- E. None of the above Discuss
- 6. What is the name of the technique in which the operating system of a computer executes several programs concurrently by switching back and forth between them?
Options- A. Partitioning
- B. Multitasking
- C. Windowing
- D. Paging
- E. None of the above Discuss
- 7. In which way(s) a macro processor for assembly language can be implemented:
Options- A. independent two-pass processor
- B. independent one-pass processor
- C. processor incorporated into pass 1 of a standard two-pass assembler
- D. all of the above
- E. None of the above Discuss
- 8. Block caches or buffer caches are used
Options- A. to improve disk performance
- B. to handle interrupts
- C. to increase the capacity of the main memory
- D. to speed up main memory read operation
- E. None of the above Discuss
- 9. Operating system
Options- A. links a program with the subroutines it references
- B. provides a layered, user-friendly interface
- C. enables the programmer to draw a flowchart
- D. all of the above
- E. None of the above Discuss
- 10. What problem is solved by Dijkstra's banker's algorithm?
Options- A. mutual exclusion
- B. deadlock recovery
- C. deadlock avoidance
- D. cache coherence
- E. None of the above Discuss
Operating Systems Concepts problems
Search Results
Correct Answer: reenterable
Correct Answer: Top-down development
Correct Answer: 1981
Correct Answer: spooling
Correct Answer: lexical analysis
Correct Answer: Multitasking
Correct Answer: all of the above
Correct Answer: to improve disk performance
Correct Answer: provides a layered, user-friendly interface
Correct Answer: deadlock avoidance
Explanation:
The Banker's algorithm is a resource allocation & deadlock avoidance algorithm developed by Edsger Dijkstra that tests for safety by simulating the allocation of pre-determined maximum possible amounts of all resources, and then makes a "safe-state" check to test for possible deadlock conditions for all other pending activities, before deciding whether allocation should be allowed to continue.
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