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