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
2771
If your antivirus software suddenly becomes disabled and you cannot re-enable it, this could be a sign that:
Answer:
A sophisticated malware is on your system and has disabled the antivirus to protect itself.
Many types of advanced malware are specifically designed to neutralize security software as a first step after infection. This allows the malware to operate without being detected or removed.
2772
How can network segmentation improve security and prevent the spread of malware?
Answer:
All of the above.
Network segmentation is a crucial architectural security control. By separating a network into zones (e.g., guest Wi-Fi, corporate LAN, R&D), a company can limit the "blast radius" of a malware outbreak, containing it to a single segment.
2773
Which type of malware might a disgruntled employee be most likely to use against their employer?
Answer:
Logic Bomb
A logic bomb is a classic "insider threat" tool. A disgruntled employee could plant a logic bomb in the company's system that is triggered to cause damage (e.g., delete files) after they have left the company.
2774
What program would you use to gain administrative rights to someone’s computer?
Answer:
Rootkit
A rootkit is a collection of malicious software designed to enable access to a computer while masking its existence.
2775
What is the term for a logic bomb triggered by a specific time?
Answer:
Time bomb
A time bomb is a type of malicious code, or logic bomb, that is created to execute its payload at a specific, predetermined date or time. The malicious action, such as deleting files, will only be triggered when the system clock reaches that time.
2776
Which is a problem caused by viruses?
Answer:
All of these
Computer viruses can cause a wide range of damage, including corrupting system files, deleting data, and disrupting normal operations.
2777
Which type of malware can spread through both email attachments and removable media like USB drives?
Answer:
Viruses and Worms
Both viruses and worms are capable of spreading through various vectors. A virus can be attached to a file on a USB drive, and a worm could be programmed to copy itself to any removable media that is connected to an infected machine.
2778
What is a primary reason for the success of social engineering in spreading malware?
Answer:
It exploits human psychology (trust, fear, curiosity) rather than technical flaws.
for the success of social engineering in spreading malware?
2779
Why is it crucial to keep your antivirus software's virus definitions updated?
Answer:
To protect against newly created malware that has been added to the definition database.
New malware is created every day. Updating the virus definitions downloads the latest signatures for these new threats, allowing your AV software to recognize and protect you from them. Without regular updates, the AV is blind to new malware.
2780
What was the primary motivation behind the Magecart attacks?
Answer:
Financial gain through the theft of credit card information from e-commerce websites.
Magecart is not a single group but rather an umbrella term for a collection of cybercriminal groups who specialize in "formjacking." They compromise online shopping websites and inject malicious code to skim customer payment card details during the checkout process.