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Computer Science for IGCSE & O level - The Internet And Its Uses (Section 12)

1
What is the purpose of a digital signature?
Answer
(B)
To verify the authenticity and integrity of a message.
2
What should you do if you lose your mobile phone?
Answer
(B)
Immediately contact your mobile carrier and report it lost or stolen.
3
Which of the following access levels might be applied in a hospital's data system?
Answer
(D)
Administrator access
4
What is one advantage of a proxy server?
Answer
(C)
It can hide your IP address.
5
What should you do if you receive an email from your bank asking for your account information?
Answer
(C)
Contact your bank directly through a verified method.
6
What is the basic function of the blockchain technology?
Answer
(B)
Transparency and security
7
What is two-factor authentication (2FA) designed to do?
Answer
(B)
Authenticate users by using a second form of identification.
8
Which of the following is NOT a common way to protect passwords?
Answer
(C)
Using easily guessable words as passwords
9
What are the main principles behind blockchain technology?
Answer
(B)
Data Transparency and Security
10
What is the main function of the 'forward' button in a web browser?
Answer
(B)
To move forward to the next webpage in your browsing history after using the back button.
11
What is the primary method used by hackers to steal sensitive data, such as passwords?
Answer
(B)
Using a phishing email
12
What is a key feature of spyware?
Answer
(B)
It secretly monitors user activity.
13
What security issue could be caused by the use of a shared password?
Answer
(D)
The password can be used by unauthorized individuals.
14
What are the potential risks when connecting to a public Wi-Fi network?
Answer
A
B
C
15
What is the basic function of a web browser?
Answer
A
B
D
16
Which of the following is NOT a stage of the TLS handshake process?
Answer
(C)
The browser sends the public key to the server.
17
In digital currency, what does the term 'cryptography' mean?
Answer
(B)
The use of codes to secure digital currencies and transactions
18
Which of the following statements about fingerprints are true?
Answer
B
C
19
Which of these is a common characteristic of a strong password?
Answer
(C)
Including a combination of uppercase and lowercase letters, numbers, and symbols.
20
What is the primary function of a DoS (Denial of Service) attack?
Answer
(B)
To make a system unavailable.
21
Why is it important to keep software updated?
Answer
(B)
To fix bugs and security vulnerabilities.
22
What are the three common factors used in authentication?
Answer
A
B
C
23
Which technology is responsible for making sure that the information that is available across the network is synchronized and accurate?
Answer
(B)
Blockchain
24
What is a 'cookie' in the context of web browsing?
Answer
(C)
A small text file that websites store on your computer to remember information about you.
25
What is the role of a digital certificate?
Answer
(B)
To verify the authenticity of a website or individual.
26
What is the primary function of Transport Layer Security (TLS)?
Answer
(A)
To encrypt and secure the communication of data between devices and users.
27
What are some indicators that your computer may be infected with malware?
Answer
A
B
C
28
What does SSL (Secure Sockets Layer) do?
Answer
(A)
It encrypts data sent between a web browser and a server
29
What is a major difference between a virus and a worm?
Answer
(A)
Viruses need a host program, worms are standalone
30
What does a 'firewall' primarily do?
Answer
(B)
Monitors and controls network traffic.
31
What is the definition of 'malware'?
Answer
(B)
Malicious software designed to cause harm.
32
What is a common symptom of a Trojan horse infection?
Answer
(B)
The computer running slowly
33
What is the function of the 'back' button in a web browser?
Answer
(C)
To go to the previous page.
34
What can a 'digital certificate' verify?
Answer
(B)
The authenticity of a website or individual.
35
What is the purpose of a 'browser extension'?
Answer
(C)
To add new features to your web browser.
36
What is 'typosquatting'?
Answer
(B)
A technique where hackers register domain names that are similar to popular sites.
37
What is the primary purpose of a firewall?
Answer
(C)
To monitor and control network traffic.
38
What is a domain name?
Answer
(B)
The address of a website on the internet.
39
What is the role of HTML in web browsing?
Answer
(A)
To define the structure and content of a webpage.
40
What does a web browser use to locate a website on the internet?
Answer
(A)
IP address
41
Which of the following can make an individual vulnerable to a social engineering attack?
Answer
(D)
All of the above
42
What is the primary function of anti-spyware software?
Answer
(B)
To protect your computer from malicious programs.
43
What does '2FA' stand for?
Answer
(A)
Two-Factor Authentication
44
What is the role of a Uniform Resource Locator (URL)?
Answer
(C)
To specify the location of a resource on the web.
45
What are the main functions of cookies?
Answer
B
C
46
What is 'phishing'?
Answer
(C)
A method used to steal user credentials by deception.
47
Which of the following can be considered as a sign of a virus?
Answer
(D)
All of the above
48
What is phishing?
Answer
(B)
The act of sending emails posing as a legitimate organization to trick people into revealing personal information.
49
What does 'spam' refer to?
Answer
(B)
Irrelevant or unsolicited electronic messages.
50
What does the acronym 'URL' stand for?
Answer
(B)
Uniform Resource Locator