A Level Computer Science Quiz 2017 Part 1

15 Questions

Quiz Description

The term computer has evolved over the centuries. With each century having its own definition. Presently in the 21st century, the term computer can be defined as computer science is the study of computers and computing as well as their theoretical and practical applications (such as artificial intelligence computer programming etc).

Students/people going in for any examinations (such as the CGCE) relating to computer science must have an idea on the topics they must concentrate on and how questions are being set and they can approach questions on those topics.

This quiz comprises 15 questions, most of which are based on the Advanced level syllabus.

Students are always advised to go through each question very carefully.For more quizzes click on more or visit our website to gain more materials.

1:

A three input NOR gate gives a logic high output only when


Correct
  • 1:
    One input is high
  • 2:
    One input is low
  • 3:
    Two input are low
  • 4:
    All inputs are low
2:

The binary form of 77.2510 is


Correct
  • 1:
    1001101.01
  • 2:
    1001101.001
  • 3:
    10110010.10
  • 4:
    10110010.11
3:

In memory hierarchy, the larger the memory the


Correct
  • 1:
    Higher the access time and the higher the speed of transfer of data to CPU
  • 2:
    Higher access time and the lower the speed of transfer of data to CPU
  • 3:
    Shorter the access time and the higher the speed of transfer of data to CPU
  • 4:
    Shorter the access time and the lower the speed of transfer of data to CPU
4:

Dynamic RAM, as opposed to Static RAM, is generally used as main memory in a computers system because it


Correct
  • 1:
    Consumes acceptable power
  • 2:
    Has higher speed
  • 3:
    Has higher speed Has lower cell density
  • 4:
    Needs refreshing in circuity
5:

-2710 can be represented in a signed magnitude format and in a 1’s complement format as


Correct
  • 1:
    111011 & 100100
  • 2:
    100100 & 111011
  • 3:
    011011 & 100100
  • 4:
    100100 & 011011
6:

In the Von Neumann machine architecture,


Correct
  • 1:
    Programs are stored in a separate memory from data
  • 2:
    Both program and data are stored on a disk
  • 3:
    Programs and data are stored in the same kind of memory
  • 4:
    Programs are stored in ROM and data in disks
7:

The 2’s complement of the binary number 1010 in 6 bits is:


Correct
  • 1:
    111100
  • 2:
    110110
  • 3:
    110111
  • 4:
    101100
8:

The memory unit that communicates directly with the CPU is called the:


Correct
  • 1:
    Main memory
  • 2:
    Direct memory
  • 3:
    Shared memory
  • 4:
    Auxiliary memory
9:

The equivalence of the Boolean expression: z=x(x+y) is


Correct
  • 1:
    .
  • 2:
    .
  • 3:
    .
  • 4:
    .
10:

The circuit used to memorize one bit of data is known as a/an


Correct
  • 1:
    Register
  • 2:
    Encoder
  • 3:
    Cell
  • 4:
    Flip-Flop
11:

What is the characteristic of the RAM that makes it suitable to manage processes in memory?


Correct
  • 1:
    It is volatile
  • 2:
    It is small in size
  • 3:
    Its access is direct
  • 4:
    Its information can be overwritten
12:

Memory management is necessary because


Correct
  • 1:
    Memory management is necessary because The memory is finite
  • 2:
    Many programs have to run simultaneously
  • 3:
    Free memory space has to be relocated
  • 4:
    All of the above
13:

The Shortest Job First is a process scheduling strategy which is:


Correct
  • 1:
    Pre-emptive
  • 2:
    No pre-emptive
  • 3:
    Free memory space has to be reallocated
  • 4:
    Suitable in batch processing
14:

Analysis which determines the meaning of a statement once its grammatical structure is correct is known as


Correct
  • 1:
    Syntactic analysis
  • 2:
    Semantic analysis
  • 3:
    Grammatical analysis
  • 4:
    Lexical analysis
15:

A technique that allows for the execution of a program that is not entirely in memory is known as:


Correct
  • 1:
    Demand paging
  • 2:
    Fixed partitioning
  • 3:
    Swapping
  • 4:
    Pooling

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A Level Computer Science Quiz 2017 Part 1
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