πWHITE ROOM
Log inRegister free

GCE A Level Computer Science: past questions and revision

For Lower Sixth and Upper Sixth students in Cameroon. 357 practice questions on 42 topics of the A Level Computer Science syllabus, from real GCE papers and checked practice questions.

Topics

Sample GCE questions

Real A Level Computer Science questions. Register free to answer them, see the answers and get every step explained.

Sample 1 · Analysis of an algorithm

In computability, the term semi-decidable means that in general a problem:

  1. Sometimes has a solution.
  2. Has a solution half the time.
  3. Does have a solution if there is one.
  4. Does not yet have a solution.
Sample 2 · Binary codes

When using the extended ASCII character set, how many bits will be used in storing the word "TECHNOLOGY"?

  1. 96
  2. 1316
  3. 800
  4. 80
Sample 3 · Database systems

In which of the following scenarios would normalisation NOT be of help?

  1. Record Che's library registration without him having to borrow at least one book.
  2. Remove Njoh as a library user, without deleting his library usage history.
  3. Awaiting Pat to update her CV since she became Chief librarian.
  4. Update the same details of Egbe found in many activities in his university.
Sample 4 · Algorithm design

Compare a 'While' loop to a 'Repeat-Until' loop. In which scenario would the 'While' loop be specifically required over the 'Repeat-Until'?

  1. When the loop body should potentially never execute if the condition is initially false
  2. When the loop must execute at least once regardless of the condition
  3. When the number of iterations is known exactly before the loop starts
  4. When the condition involves multiple logical operators
Sample 5 · Floating point number representation

The number -14.25 translated into a normalized floating number, with an 8 bit mantissa and a 4 bit exponent is?

  1. 01001110 0101
  2. 10001110 0100
  3. 10001110 0101
  4. 01110010 0100
How White Room helps you revise Computer Science

Register free