UGC NET COMPUTER SCIENCE SOLVED MODEL TEST PAPER - 3

UGC NET COMPUTER SCIENCE SOLVED MODEL TEST PAPER - 3

1. The essential content(s) in each entry of a page table is / are

(a) Virtual page number

(b) Page frame number

(c) Both virtual page number and page frame number

(d) Access right information

Ans.: c

2. Register renaming is done in pipelined processors

(a) as an alternative to register allocation at compile time

(b) for efficient access to function parameters and local variables

(c) to handle certain kinds of hazards

(d) as part of address translation

Ans.: c

3. The best logic family in case of figure of merit is

(a) TTL

(b) DTL

(c) I2L

(d) HTL

Ans.: c

4. A type of failures that occurs for all input values while invoking a function of the system is

(a) transient failure

(b) permanent failure

(c) recoverable failure

 (d) unrecoverable failure

Ans.: b

5. The reliability growth modeling can be used

(a) to improve the reliability of a software product as errors are detected and repaired

(b) to predict when a particular level of reliability is likely to be attained

(c) to determine when to stop testing to attain a given reliability level

(d) all of the above

Ans.: d

6. A configuration file used by the reporting subsystem is not placed in the correct directory in the customer’s environment. Which type of testing would most likely expose this defect?

(a) integration testing

 (b) installation testing

(c) performance testing

(d) acceptance testing

Ans.: b

7. A change is made to correct a fault. The fault has been fixed, but it has caused a fault in previously functioning

code. Which type of testing would most likely expose this defect?

(a) unit testing

(b) acceptance testing

(c) regression testing

(d) performance testing

Ans.: c

8. A thread is usually defined as a ‘light weight process’ because an operating system (OS) maintains smaller data

structures for a thread than for a process. In relation to this, which of the followings is TRUE?

(a) On per-thread basis, the OS maintains only CPU register state

(b) The OS does not maintain a separate stack for each thread

(c) On per-thread basis, the OS does not maintain virtual memory state

(d) On per thread basis, the OS maintains only scheduling and accounting information.

Ans.: a

9. Match the following:

       List-I                                   List-II

(A) Data coupling          (I) Module A and Module B have shared data

(B) Stamp coupling       (II) Dependency between modules is based on the fact they

communicate by only passing of data.

(C) Common coupling  (III) When complete data structure is passed from one module

to another.

(D) Content coupling   (IV) When the control is passed from one module to the middle

of another.

(a) A-III, B-II, C-II, D-IV (b) A-II, B-III, C-I, D-IV

(c) A-II, B-III, C-IV, D-I (d) A-III, B-II, C-IV, D-I

Ans.: b

10. A process which defines a series of tasks that have the following four primary objectives is known as

1. to identify all items that collectively define the software configuration.

2. to manage changes to one or more of these items.

3. to facilitate the construction of different versions of an application.

4. to ensure that software quality is maintained as the configuration evolves over time.

(a) Software Quality Management Process

(b) Software Configuration Management Process

(c) Software Version Management Process

(d) Software Change Management Process

Ans.: b

11. FAN IN of a component A is defined as

(a) Number of components that can call or pass control to component A.

(b) Number of components that are called by component A.

(c) Number of components related to component A.

(d) Number of components dependent on component A.

Ans.: a

12. The relationship of data elements in a module is called

(a) Coupling

 (b) Modularity

(c) Cohesion

(d) Granularity

Ans.: c

13. Software Configuration Management is the discipline for systematically controlling

(a) the changes due to the evolution of work products as the project proceeds.

(b) the changes due to defects (bugs) being found and then fixed.

(c) the changes due to requirement changes

(d) all of the above

Ans.: d

14. Testing of software with actual data and in actual environment is called

(a) Alpha testing

(b) Beta testing

(c) Regression testing

(d) None of the above

Ans.: b

15. Consider the following list

1. All pair shortest path A. Greedy

2. Quick sort B. BFS

3. MST C. Dynamic programming

4. Connected components D. Divide and conquer

Which is the correct match.

(a) 1-A, 2-B, C-3, D-4

(b) 1-D, 2-C, 3-B, 4-A

(c) 1-C, 2-D, 3-A, 4-B

(d) none of these

Ans.: c

16. Oblique projection with an angle of 45º to the horizontal plane is called as

(a) Cabinet projection

(b) Isomeric projection

(c) Cavalier projection

(d) None of the above.

Ans.: c

17. A page fault means that we referenced a page

(a) outside the memory boundaries

(b) with an incorrect I/O request

(c) that was not insecondary storage

(d) that was not in main memory

Ans.: d

18. Which of the following information bits used by the various page replacement policies indicates if the page has been called lately?

(a) Locality bit

(b) Status bit

(c) Referenced bit

(d) Modified bit

Ans.: d

19. Data hazards occur when .....................

(a) Greater performance loss

(b) Pipeline changes the order of read/write access to operands

(c) Some functional unit is not fully pipelined

(d) Machine size is limited

Ans.: b

20. Which Logic circuit would you use for addressing memory?

(a) Full adder

(b) Multiplexer

(c) Decoder

(d) Direct memory acces

Ans.: c