Operating Systems Concepts problems
- 1. The instruction register
Options- A. is a hardware memory device which denotes the location of the current instruction being executed.
- B. is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
- C. contains the address of the memory location that is to be read from or stored into.
- D. contains a copy of the designated memory location specified by the MAR after a "read" or the new contents of the memory prior to a "write".
- E. None of the above Discuss
Correct Answer: is a group of electrical circuits (hardware), that performs the intent of instructions fetched from memory.
- 2. Which policy replace a page if it is not in the favoured subset of a process's pages?
Options- A. FIFO
- B. LRU
- C. LFU
- D. Working set
- E. None of the above Discuss
Correct Answer: Working set
- 3. Which of the following is a measure to test how good or bad a modular design is
Options- A. Module strength
- B. Module coupling
- C. Static analysis
- D. All of the above
- E. None of the above Discuss
Correct Answer: Module strength
- 4. Information in a memory that is no longer valid or wanted is known as
Options- A. non-volatile
- B. volatile
- C. surplus
- D. garbage
- E. None of the above Discuss
Correct Answer: garbage
- 5. The principles of structured programming forbid the use of
Options- A. WHILE-DO
- B. GOTO
- C. IF-THEN-ELSE
- D. DO-WHILE
- E. None of the above Discuss
Correct Answer: GOTO
- 6. Which of the following filename extension suggests that the file is a backup copy of another file?
Options- A. TXT
- B. COM
- C. BAS
- D. BAK
- E. None of the above Discuss
Correct Answer: BAK
- 7. A sequence of instructions, in a computer language, to get the desired result, is known as
Options- A. Algorithm
- B. Decision Table
- C. Program
- D. All of the above
- E. None of the above Discuss
Correct Answer: Program
- 8. An instruction in a programming language that is replaced by a sequence of instructions prior to assembly or compiling is known as
Options- A. procedure name
- B. macro
- C. label
- D. literal
- E. None of the above Discuss
Correct Answer: macro
- 9. A program
Options- A. is a device that performs a sequence of operations specified by instructions in memory.
- B. is the device where information is stored
- C. is a sequence of instructions
- D. is typically characterized by interactive processing and time of the CPU's time to allow quick response to each user.
- E. None of the above Discuss
Correct Answer: is a sequence of instructions
- 10. Banker's algorithm for resource allocation deals with
Options- A. deadlock prevention
- B. deadlock avoidance
- C. deadlock recovery
- D. mutual exclusion
- E. None of the above Discuss
Correct Answer: deadlock avoidance
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