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
5331
What is a backup?
Answer:
An exact copy of system data
A backup is a copy of files and data created to ensure it can be recovered in case of data loss.
5332
The term \_\_ describes viruses, worms, Trojans, and malicious scripts.
Answer:
Malware
Malware is an umbrella term used to refer to a variety of forms of hostile or intrusive software.
5333
When a hacker contacts you by phone or email to steal your password, it is called what?
Answer:
Phishing
Phishing is a fraudulent attempt to obtain sensitive information by disguising as a trustworthy entity in electronic communication.
5334
A \_\_ is anything that can cause harm to a system.
Answer:
Threat
A threat is any potential danger or event that can compromise a system’s security or cause harm.
5335
In the right setting, a thief can steal your data by watching you type. What is this called?
Answer:
Shoulder surfing
Shoulder surfing involves looking over someone’s shoulder to obtain confidential information as they type it.
5336
Which of the following units is commonly used to quantify the data transfer rate or bandwidth of an internet connection?
Answer:
Mbps (megabits per second)
The speed of an internet connection, often referred to as its bandwidth or data transfer rate, is measured in 'megabits per second' (Mbps). This unit indicates how many millions of bits of data can be transferred each second.
Option B, GHz (gigahertz), is used to measure the clock speed of a processor, indicating how many cycles it completes per second.
Option C, DPI (dots per inch), measures the resolution of a printer or scanner, referring to the number of individual dots of ink or pixels it can produce or capture per linear inch.
Option D, PPM (pages per minute), is used to measure the printing speed of a printer, indicating how many pages it can output in one minute.
5337
The \_\_ of a threat measures its potential impact on a system.
Answer:
Degree of harm
The degree of harm assesses the severity of the potential damage a threat could inflict on a system or organization.
5338
A hacker who modifies or forges information in an electronic resource is engaging in:
Answer:
Data diddling
Data diddling is the unauthorized alteration of data before or during its entry into a computer system.
5339
Which term describes an individual who leverages their advanced technical skills to illicitly breach computer systems or networks with harmful intentions?
Answer:
Cracker
A 'cracker' is specifically defined as someone who gains unauthorized access to computer systems or networks with malicious intent, often to commit theft, vandalism, or other illegal activities. While 'hacker' is a broad term that can encompass both ethical (white-hat) and malicious (black-hat) activities, 'cracker' precisely denotes the malicious actor. An 'Ethical Hacker' (or penetration tester) performs authorized security testing. A 'Cyber Security Analyst' works to protect systems from threats. A 'Network Administrator' manages and maintains network infrastructure.
5340
Which of the following is not a real security or privacy risk?
Answer:
Spam
While annoying, spam (unsolicited email) is generally considered a nuisance rather than a direct security threat like viruses or hacking.