Computer Science/IT MCQs
Topic Notes: Computer Science/IT
MCQs and preparation resources for competitive exams, covering important concepts, past papers, and detailed explanations.
Plato
- Biography: Ancient Greek philosopher (427–347 BCE), student of Socrates and teacher of Aristotle, founder of the Academy in Athens.
- Important Ideas:
- Theory of Forms
- Philosopher-King
- Ideal State
2521
A smartphone is a type of:
Answer:
Microcomputer
** A smartphone contains a microprocessor and fits the definition of a microcomputer, albeit in a very small and portable form factor.
2522
The system that allows for the electronic transfer of funds from one bank account to another is known as:
Answer:
Electronic Funds Transfer (EFT)
** EFT is a broad term that includes various systems for transferring money electronically, such as wire transfers, direct deposits, and online bill payments.
2523
In the context of examinations, what does OMR stand for?
Answer:
Optical Mark Recognition
** OMR is a technology used to capture human-marked data from document forms such as surveys and tests. It is widely used for grading multiple-choice question papers quickly and accurately.
2524
The process of converting a digital signal to an analog signal is done by a:
Answer:
Digital-to-Analog Converter (DAC)
** A DAC performs the reverse operation of an ADC. It takes a digital signal (a sequence of binary numbers) and converts it into a continuous analog signal. This is used, for example, to produce sound from a digital audio file.
2525
"Garbage In, Garbage Out" (GIGO) is a concept related to which characteristic of a computer?
Answer:
Accuracy
** GIGO emphasizes that the accuracy of a computer's output is directly proportional to the accuracy of the input data and instructions. If the input is flawed, the output will also be flawed, regardless of the computer's processing capabilities.
2526
The computers we use in our daily lives, like laptops and smartphones, are examples of:
Answer:
Digital computers
** Almost all modern computing devices, from personal computers to servers, are digital computers. They operate on binary data, which allows for a high degree of accuracy and flexibility.
2527
The use of plagiarism detection software in academic institutions is an application of computers in:
Answer:
Examination and education integrity
** These software tools use computer algorithms to compare submitted work against a vast database of existing documents to identify potential plagiarism, thus upholding academic honesty.
2528
Computers that are used in large organizations such as insurance companies and banks, where many people frequently need to use same data, are____?
Answer:
mainframe computers
Mainframe computers are powerful computers designed for high-volume, transaction-based applications. They are used by large organizations like banks and insurance companies because they can reliably process a massive number of concurrent transactions and support thousands of users accessing the same data simultaneously.
2529
What type of computer is classified as being of moderate size?
Answer:
Mini
A mini computer, or minicomputer, is a class of multi-user computers that falls in the middle range of the computing spectrum, between the largest mainframe computers and the smallest microcomputers. They were popular in the 1960s and 1970s for business and scientific applications.
2530
The digital divide refers to:
Answer:
The gap between those who have access to modern information and communication technology and those who do not.
** This is a significant social issue related to the application of computers in daily life, as lack of access can lead to disadvantages in education, employment, and social participation.