WAEC - Computer Studies (2015)
1
Charles Babbage was the first to?
2
Which of the following devices is not a micro computer?
3
The main difference between a laptop and a desktop is that, a laptop?
Answer(D)
contains high capacity battery that powers for extensive period while desktop has not.
5
The computer hardware is made up of system unit and?
6
The computer memory is, measured in?
7
If the output signal of any logic gate is fed into an inverter, the results is? .
Answer(C)
the inverse of the output signal
8
The device through which the main components of the computer communicate with each other is called?
9
The hardware of a computer does not consist of?
10
Output devices in a computer are those devices that send?
Answer(A)
results to the memory of the computer
11
Which of the following is not a mobile input device?
12
Figure 1 above is a logic gate. Use it to answer questions 12 to 14.
Figure 1 represents?
13
X, Y and Z respectively, represents?
Answer(D)
input, input and output signals.
14
Use the Logic gate above to answer this question.
When signals X= 0 and Y= 1, signal Z is?
15
The memory unit of the computer belongs to the?
16
Which of the following is not a function of the operating system?
Answer(D)
Opening and closing files.
17
An example of a specific purpose application package is the?
18
The operating system, translators and utility programs are examples of?
19
The first stage in program development is problem?
20
A pictorial representation of program flow is referred to as?
21
An example of a programming language that uses mnemonic codes is?
22
The use of satellite to transmit signal information to the earth is enabled with the use of?
23
.The line segment that describes the contents of the message when sending an e-mail is?
24
Which of the following networks covers the widest range?
25
The keyboard command used to copy text in Ms-Word document is?
26
The colour palette in CorelDraw allows the user to?
Answer(D)
choose different pre-set colour palettes.
27
In order to get to the symbol dialog box in MS-Word click on the?
28
In a network, the workstation is usually.connected to the?
29
When browsing on the internet, a possible reason for. the message "page not found" is that?
Answer(D)
a connection between the client and server has been lost.
30
Which of the following is not a network device?
31
Which of the following is a valid e-mail address?
32
In word processing, an efficient way to move the second paragraph and place it after the fourth paragraph is?
33
Which of the following items changes shape depending on the task being performed?
34
The computer keyboard key(s) that a user presses to move to the beginning of a current line of text is/are the?
35
Data loss in a computer cannot be prevented by the use of?
36
The shortcut command used in restarting a computer is?
37
The term bus' width in data transfer refers to the?
Answer(C)
number of bits of information the RAM can send to the CPU at the same time.
38
The part of the computer that holds the data and pro- grams for CPU processing is the?
39
A high level language can be converted to a machine language using?
40
Which of the following statements is true of encryption? It
Answer(C)
makes messages un- readable by the recipient.
41
Computer ethics are important because they?
Answer(C)
address piracy and comportment issues.
42
Which of the following is the main advantage of intellectual property right?
Answer(C)
Encouragement of innovations.
43
Which of the following statements is true of free software? It
Answer(D)
is a licensed software with permission to copy freely.
44
In hexadecimal number system, B, D and F represent which of the following decimal numbers?
Answer(A)
11, 13 and 15 respectively.
45
The conversion of 11001\(_2\), to base ten equals?
