Operating Systems Questions and Answers pdf - Set 02 - ObjectiveBooks

Operating Systems Questions and Answers pdf - Set 02

Practice Test: Question Set - 02

1. A partitioned data set is most used for
    (A) A program or source library
    (B) Storing program data
    (C) Storing backup information
    (D) Storing ISAM files

2. The disadvantages of "Compile and Go" loading scheme is (are):
    (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

3. System generation:
    (A) Is always quite simple
    (B) Is always very difficult
    (C) Varies in difficulty between systems
    (D) Requires extensive tools to be understandable

4. The errors that can be pointed out by the compiler are
    (A) Syntax errors
    (B) Semantic errors
    (C) Logical errors
    (D) Internal errors

5. Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?
    (A) Two pass assembler
    (B) Load-and-go assembler
    (C) Macroprocessor
    (D) Compiler

6. The memory allocation scheme subject to "external" fragmentation is
    (A) Segmentation
    (B) Swapping
    (C) Pure demand paging
    (D) Multiple contiguous fixed partitions

7. In MS-DOS, relocatable object files and load modules have extensions
    (A) .OBJ and .COM or .EXE, respectively
    (B) .COM and .OBJ, respectively
    (C) .EXE and .OBJ, respectively
    (D) .DAS and .EXE, respectively

8. Indicate which is a pre-emptive scheduling algorithm
    (A) Round-robin
    (B) Shortest-job-next
    (C) Priority-based
    (D) All of the above

9. In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?
    (A) MS
    (B) DOS
    (C) MS DOS
    (D) 5.0

10. A public key encryption system
    (A) Allows anyone to decode the transmission
    (B) Allows only the correct sender to decode the data
    (C) Allows only the correct receiver to decode the data
    (D) Does not encode the data before transmitting it

11. Indicate which, of the following, in not true about an interpreter
    (A) Interpreter generates an object program from the source program
    (B) Interpreter is a kind of translator
    (C) Interpreter analyses each source statement every time it is to be executed
    (D) All of the above

12. Memory management is:
    (A) Not used in modern operating system
    (B) Replaced with virtual memory on current systems
    (C) Not used on multiprogramming systems
    (D) Critical for even the simplest operating systems

13. Which of the following is characteristic of an operating system?
    (A) Resource management
    (B) Error recovery
    (C) Memory management
    (D) All the above

14. The most common systems security method is
    (A) Passwords
    (B) Encryption
    (C) Firewall
    (D) All of the above

15. The part of machine level instruction, which tells the central processor what has to be done, is
    (A) Operation code
    (B) Address
    (C) Locator
    (D) Flip-Flop

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