Computer Studies 2023 Jamb Examination
Computer Studies 2023 Jamb Examination
Question 1
Which of the following is used for modulation and demodulation ?
A modem (which stands for modulator-demodulator) is a device that converts digital data into analog signals for transmission over a communication channel and then converts the received analog signals back into digital data at the receiving end
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Question 2
When records are given a new value, it is called
Updating a record in a database refers to modifying its existing value or information. This is different from insertion (adding new records), deletion (removing records), or retrieval (reading records).
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Question 3
The type of computers that are designed to perform complex calculations extremely rapidly are called ?
Supercomputers are designed for high-performance computation, capable of processing complex calculations at extremely high speeds, unlike microcomputers, laptops, or mainframes which serve different purposes.
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Question 4
A set of moral principles that regulate the use of computers is called
Computer ethics refers to the moral principles and guidelines that govern responsible and ethical use of computers and technology.
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Question 5
The logic gate in the figure above is
The logic gate shown in the figure is a XOR gate. XOR outputs HIGH (1) only when the number of HIGH inputs is odd, i.e., exactly one input is HIGH in a two-input gate.
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Question 6
A computer code that spreads without the user interaction and can cause network performance problem is
A computer worm is a self-replicating program that spreads across networks without user intervention, often consuming bandwidth and affecting network performance.
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Question 7
The following are input devices except.
Input devices are used to provide data to a computer. A monitor is an output device, not an input device.
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Question 8
What category of application package does Microsoft Excel belong to ?
Microsoft Excel is a spreadsheet software used for calculations, data analysis, and visualization. It falls under the category of spreadsheet packages.
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Question 9
A type of application software that combines the abilities of several general purpose applications in one program is ?
Integrated packages combine multiple general-purpose applications, such as word processing, spreadsheets, and presentations, in a single software suite.
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Question 10
What is the function of the escape key ?
The Escape (Esc) key is used to interrupt or cancel the current operation or exit a program or dialog box without executing it.
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