Operating Systems Questions Quizlet - Set 12 - ObjectiveBooks

Operating Systems Questions Quizlet - Set 12

Practice Test: Question Set - 12

1. Operating system
    (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) None of the above

2. Banker's algorithm for resource allocation deals with
    (A) Deadlock prevention
    (B) Deadlock avoidance
    (C) Deadlock recovery
    (D) Mutual exclusion

3. What problem is solved by Dijkstra's banker's algorithm?
    (A) Mutual exclusion
    (B) Deadlock recovery
    (C) Deadlock avoidance
    (D) Cache coherence

4. Which of the following statements is false?
    (A) A process scheduling algorithm is preemptive if the CPU can be forcibly removed from a process
    (B) Time sharing systems generally use preemptive CPU scheduling
    (C) Response time are more predictable in preemptive systems than in non preemptive systems
    (D) Real time systems generally use non-preemptive CPU scheduling

5. Which table is a permanent database that has an entry for each terminal symbol?
    (A) Terminal table
    (B) Literal table
    (C) Identifier table
    (D) Reductions

6. A task in a blocked state
    (A) Is executable
    (B) Is running
    (C) Must still be placed in the run queues
    (D) Is waiting for same temporarily unavailable resources

7. The function(s) of the Storage Assignment is (are)
    (A) To assign storage to all variables referenced in the source program
    (B) To assign storage to all temporary locations that are necessary for intermediate results
    (C) To assign storage to literals, and to ensure that the storage is allocate and appropriate locations are initialized
    (D) All of the above

8. The higher versions of the operating systems are so written that programs designed for earlier versions can still be run. What is it called?
    (A) Upgradability
    (B) Upward mobility
    (C) Universality
    (D) Upward compatibility

9. Addressing modes
    (A) Defines the fundamental method of determining effective operand addresses
    (B) Are variations in the use of fundamental addressing structures, or some associated actions which are related to addressing
    (C) Performs indicated operations on two fast registers of the machine and leave the result in one of the registers
    (D) All of the above

10. A hardware device that is capable of executing a sequence of instructions, is known as
    (A) CPU
    (B) ALU
    (C) CU
    (D) Processor

11. Operating system is
    (A) A collection of hardware components
    (B) A collection of input-output devices
    (C) A collection of software routines
    (D) All of the above

12. The primary job of the operating system of a computer is to
    (A) Command resources
    (B) Manage resources
    (C) Provide utilities
    (D) Be user friendly

13. The Register - to - Register (RR) instructions
    (A) Have both their operands in the main store
    (B) Which perform an operation on a register operand and an operand which is located in the main store, generally leaving the result in the register, except in the case of store operation when it is also written into the specified storage location
    (C) Which perform indicated operations on two fast registers of the machine and leave the result in one of the registers
    (D) None of the above

14. Which of the following is true about pseudo code
    (A) A machine language
    (B) An assembly language
    (C) A high-level language
    (D) None of the above

15. Which, of the following is not true about the description of a decision table?
    (A) A decision table is easy to modify
    (B) A decision table is directly understood by the computer
    (C) A decision table is easy to understand
    (D) All of the above

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