A Level Computer Science Quiz 2015 Part 1

15 Questions

Quiz Description

With the new age of technology, we must have come across so many definitions about the word computer. Now in relation to its studies, computer science can be defined/said to be defined as the study of computer and algorithmic processes, including their applications, their hardware and software designs. The knowledge of computer science benefits the business and the personal world efficiently.

The quiz applies the principle of the following topics: binary conversions, logic gates, knowledge of the key concepts in programming and algorithm, knowledge about the components of a computer such as the CPU etc.With regard to this , this quiz has been put together for students going in for the Advanced level Computer science examinations or other computer science related exams. It is made up of 15 questions. For more of these quizzes click more or you can also visit our website to get more quizzes on different subjects.

1:

A de-multiplexer has


Correct
  • 1:
    One data input and several outputs
  • 2:
    One input and several outputs
  • 3:
    Several inputs and several outputs
  • 4:
    Several inputs and one output
2:

Convert the fractional decimal number 6.75 to binary


Correct
  • 1:
    0111.1100
  • 2:
    0110.1010
  • 3:
    0110.1100
  • 4:
    0110.0110
3:

What is the equivalent in hexadecimal representation of the decimal number 973?


Correct
  • 1:
    4BC
  • 2:
    CB4
  • 3:
    6D
  • 4:
    3CD
4:

A personal computer program counter is also called


Correct
  • 1:
    Instruction pointer
  • 2:
    Memory pointer
  • 3:
    Data counter
  • 4:
    File pointer
5:

A three input NOR gate gives logic high output only when


Correct
  • 1:
    One input is high
  • 2:
    One input is low
  • 3:
    All inputs are high
  • 4:
    All inputs are low
6:

In which addressing mode is the operand given explicitly in the instruction?


Correct
  • 1:
    Absolute
  • 2:
    Immediate
  • 3:
    Indirect
  • 4:
    Direct
7:

Pipelining strategy is also known as


Correct
  • 1:
    Instruction execution
  • 2:
    Instruction prefetch
  • 3:
    Instruction decoding
  • 4:
    Instruction manipulation
8:

In a virtual system, the address used by the programmer belongs to


Correct
  • 1:
    Memory space
  • 2:
    Physical address
  • 3:
    Address space
  • 4:
    Main memory address
9:

The speed of the microprocessor depends on


Correct
  • 1:
    Data bus width
  • 2:
    Access Time
  • 3:
    Response Time
  • 4:
    Address bus width
10:

On receiving an interrupt from an I/O device, the CPU


Correct
  • 1:
    Halts for a predetermined time
  • 2:
    Branches off the interrupts service routine after completion of the current instruction
  • 3:
    Branches off to the interrupt service routine immediately
  • 4:
    Hands over control of address bus and data bus to the interrupt device
11:

What is the function of the control unit in the CPU?


Correct
  • 1:
    To transfer data to primary storage
  • 2:
    To store program instruction
  • 3:
    To perform logic operations
  • 4:
    To decode program instruction
12:

The time that elapses between the initiation of an operation and completion of that operation is called;


Correct
  • 1:
    Throughout
  • 2:
    Memory response time
  • 3:
    I/O response time
  • 4:
    Execution time
13:

A time sharing system implies


Correct
  • 1:
    More than one processor in the system
  • 2:
    More than one program in memory
  • 3:
    More than one memory in the system
  • 4:
    More than one operating system in the computer
14:

In terms of minimizing the average waiting time of a given set of processes, the optimal scheduling algorithm is;


Correct
  • 1:
    First Come First Serve
  • 2:
    Shortest Job First
  • 3:
    Round Robin
  • 4:
    Priority Job First
15:

A process in the blocked state is moved to the ___ state when the event for which it has been waiting occurs.


Correct
  • 1:
    Running
  • 2:
    Ready
  • 3:
    Suspended
  • 4:
    Exit

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A Level Computer Science Quiz 2015 Part 1
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