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
1
What is a "data breach"?
Answer:
An incident where sensitive, protected, or confidential information is released to an untrusted environment.
A data breach is a security incident where information is accessed without authorization. These breaches can expose the personal and financial data of millions of people, which is then often used for fraud.
2
You receive an email with a link that says "Click here to update your account." The text is a hyperlink. How can you check where the link really goes without clicking it?
Answer:
Both A and B are effective methods.
Both hovering over the link to see the preview in the status bar and copying the link address to inspect it in a safe environment like a text editor are good ways to verify a link's true destination before clicking.
3
What does "HTTPS" at the beginning of a URL indicate?
Answer:
The connection between your browser and the website is encrypted.
HTTPS (Hypertext Transfer Protocol Secure) indicates that the data transmitted between your browser and the website is encrypted, which protects it from being intercepted. However, it does not guarantee that the website itself is trustworthy.
4
If a deal or offer online seems "too good to be true," it probably is. This is a good rule of thumb for avoiding:
Answer:
All of the above.
This principle applies to many types of online fraud. Scammers often use unbelievably good offers to lure in victims, so a healthy dose of skepticism is a crucial defense.
5
"Clickjacking" is an attack where:
Answer:
An attacker tricks a user into clicking on something different from what the user perceives.
In a clickjacking attack, a user thinks they are clicking on a legitimate button (e.g., "Play Video"), but they are actually clicking on a hidden, invisible link that might, for example, "like" a page on social media or initiate a download.
6
Is a website with a ".org" domain more trustworthy than one with a ".com" domain?
Answer:
No, the trustworthiness of a website does not depend on its top-level domain.
While ".org" was originally intended for non-profit organizations, the registration rules are now much less strict. Anyone can register a ".org" domain, so it should not be considered an inherent sign of trustworthiness.
7
You see an ad on a website for a product at an unbelievably low price. The ad leads to a shopping site you've never heard of. What should you be wary of?
Answer:
All of the above.
"Too good to be true" offers are a major red flag. The website could be a front for a scam, sell counterfeit goods, or have inadequate security, putting your financial information at risk.
8
A text message from an unknown number claims you've won a prize and you need to click a link to claim it. This is a common tactic in:
Answer:
Smishing
Using enticing offers like prizes to lure victims into clicking malicious links is a very common technique used in smishing (SMS phishing) attacks.
9
A person receives a call and the caller ID shows the name of their bank. This means:
Answer:
Caller ID can be easily faked (spoofed), so it cannot be trusted as a sole means of verification.
Caller ID spoofing is a common technique used by social engineers in vishing attacks. It is trivial to make a call appear to come from any number or name, so caller ID should never be fully trusted.
10
If you think you have been a victim of online fraud, what should you do?
Answer:
All of the above.
It is important to take several steps after falling victim to fraud: report the crime, protect your finances by contacting your bank, and secure your online accounts to prevent further damage.