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Senior High School · WASSCE style

Computing

Question 1

1In a linked list A → B → C → None, node B is deleted. What must change?

Medium

A. nothing changes B. A's pointer must point to C C. all nodes are moved in memory D. C's pointer must point to A

Question 2

2Which data structure best represents roads joining towns such as Kumasi, Accra and Tamale?

Easy

A. queue B. stack C. graph D. one-dimensional array

Question 3

3A binary search tree stores values so that

Hard

A. only leaves store values B. all values are random C. the root is the largest D. left subtree values are smaller and right subtree values are larger

Question 4

4Which structure is best for a family tree or a folder system on a computer?

Easy

A. queue B. stack C. record D. tree

Question 5

5A data structure that stores key–value pairs and finds a value quickly from its key is a

Easy

A. hash table (map) B. queue C. bus D. stack

Question 6

6Why does a program run slowly when RAM is full?

Easy

A. the CPU stops working B. the monitor refreshes C. cache becomes larger D. the computer uses virtual memory on the much slower disk

Question 7

7In most programming languages, the first index of an array is

Easy

A. 1 B. 0 C. −1 D. 10

Question 8

8In a circular queue of size 5 with front at index 3 and rear at index 1, the number of items is

Hard

A. 4 B. 2 C. 3 D. 5

Question 9

9Using part of the hard disk as if it were extra RAM is

Easy

A. ROM B. cache memory C. flash memory D. virtual memory

Question 10

10A linked list stores each element with

Easy

A. an index number only B. a fixed size C. a pointer to the next element D. no data

Answered0 / 10

1 2 3 4 5 6 7 8 9 10

Unanswered questions count as wrong. Theory questions are not scored.

Demo questions written by Otisam in the style of the WASSCE. They are not WAEC past questions.

Past questions, worked solutions and curriculum-mapped study material for JHS and SHS students and teachers in Ghana.

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