Class 12 Computer Science Chapter 6 – Impacts of Computing MCQs | FBISE | Grade 12 Computer
Practice 50 chapter-wise MCQs covering cybersecurity, cyber attacks, authentication, cryptography, safe digital collaboration, digital equity, and equal access to information for FBISE HSSC-II Computer Science.
1. Which practice helps protect an account when collaborating online?
A) Use strong authentication and enable two-factor authentication B) Use strong authentication and enable two-factor authentication C) Disable all security settings D) Use the same password everywhere
2. Why should users understand how their information is collected online?
A) To increase screen resolution B) To make informed decisions about privacy and data sharing C) To make websites load without networks D) To remove all online accounts
3. What is phishing?
A) A method of backing up files B) A deceptive attempt to obtain information by pretending to be a trustworthy source C) A deceptive attempt to obtain information by pretending to be a trustworthy source D) A legitimate software update
4. Which action is safest when an unexpected email asks for a password?
A) Reply with the password B) Verify the request through an independent trusted channel C) Forward it to everyone D) Verify the request through an independent trusted channel
5. What is ransomware?
A) Malware that can restrict access to data or systems and demand payment B) Malware that can restrict access to data or systems and demand payment C) A type of database D) A web design method
6. What does spyware generally do?
A) Secretly monitors or collects information from a device or user B) Secretly monitors or collects information from a device or user C) Creates physical backups D) Increases monitor size
7. What is a computer virus?
A) A network cable B) Malicious code that can replicate or spread by infecting files or systems C) Malicious code that can replicate or spread by infecting files or systems D) A secure authentication method
8. What is a DDoS attack?
A) An attack that overwhelms a service with traffic from many sources B) A method of encrypting a file C) A type of biometric login D) An attack that overwhelms a service with traffic from many sources
9. What is a common goal of a denial-of-service attack?
A) To make a service unavailable to legitimate users B) To improve service performance C) To encrypt a user’s password safely D) To create a legal contract
10. What is two-factor authentication (2FA)?
A) Authentication using two different types of evidence B) Authentication using two different types of evidence C) Using two web browsers D) Using two copies of the same password
11. Which is an example of biometric verification?
A) Fingerprint recognition B) A username C) Fingerprint recognition D) A postal address
12. Why is 2FA useful if a password is stolen?
A) A second authentication factor can still be required B) It makes the stolen password stronger C) It publishes the password D) A second authentication factor can still be required
13. What is cryptography?
A) The study and use of techniques for protecting information through transformation B) The design of computer hardware C) The creation of spreadsheets D) The repair of monitors
14. What is encryption?
A) Converting readable information into a protected form using an encryption method B) Converting readable information into a protected form using an encryption method C) Printing a document D) Increasing file size
15. What is decryption?
A) Converting protected ciphertext back into readable information B) Creating a new user account C) Converting protected ciphertext back into readable information D) Deleting a database
16. What is plaintext?
A) Readable information before encryption B) Encrypted information only C) A network attack D) Readable information before encryption
17. What is ciphertext?
A) The transformed form of data produced by encryption B) A database table C) A password hint D) A network cable
18. Which cipher replaces letters according to a fixed shift in the alphabet?
A) Caesar or shift cipher B) Caesar or shift cipher C) Binary tree cipher D) Cloud cipher
19. What is a substitution cipher?
A) A cipher that replaces symbols or letters with other symbols according to a rule B) A method of compressing videos C) A cipher that replaces symbols or letters with other symbols according to a rule D) A type of operating system
20. Why should cryptographic keys be protected?
A) Possession of a key may allow authorized cryptographic operations or access to protected data B) Keys are only used to start monitors C) Keys cannot affect security D) Possession of a key may allow authorized cryptographic operations or access to protected data
21. What is network security concerned with?
A) Protecting networks and the data and services that use them B) Increasing printer speed C) Formatting documents D) Changing screen colors
22. What is intrusion detection?
A) Identifying suspicious or unauthorized activity in a system or network B) Identifying suspicious or unauthorized activity in a system or network C) Compressing an image D) Installing a keyboard
23. What can logs help security teams do?
A) Review events and identify suspicious patterns or activity B) Increase screen brightness C) Review events and identify suspicious patterns or activity D) Remove every user account
24. What is a firewall commonly used for?
A) Controlling network traffic according to security rules B) Editing photographs C) Creating biometric fingerprints D) Controlling network traffic according to security rules
25. Which practice helps reduce the risk of identity theft?
A) Avoid unnecessarily sharing sensitive personal information B) Avoid unnecessarily sharing sensitive personal information C) Reuse passwords everywhere D) Disable account security
26. Why is sharing private information with unknown people risky?
A) It can be misused for fraud, impersonation, or identity theft B) It can be misused for fraud, impersonation, or identity theft C) It prevents phishing D) It makes passwords unnecessary
27. What is social engineering?
A) Manipulating people into revealing information or performing unsafe actions B) A method of designing buildings C) Manipulating people into revealing information or performing unsafe actions D) A hardware repair technique
28. Which is an example of social engineering?
A) Pretending to be a trusted employee to obtain confidential information B) Updating antivirus software C) Encrypting a backup D) Pretending to be a trusted employee to obtain confidential information
29. What is eavesdropping in network security?
A) Intercepting communications without authorization B) Backing up files C) Creating a database D) Checking screen resolution
30. What is DNS spoofing?
A) Manipulating DNS information to redirect users toward a false destination B) Manipulating DNS information to redirect users toward a false destination C) Improving Wi-Fi speed D) Creating a legitimate domain registration
31. What is a fake wireless access point?
A) A malicious access point designed to trick users into connecting to it B) A secure enterprise router C) A malicious access point designed to trick users into connecting to it D) A backup server
32. What is a waterhole attack?
A) Compromising a website or resource likely to be visited by a target group B) A method of cooling a computer C) A physical flood-control system D) Compromising a website or resource likely to be visited by a target group
33. Which measure can help protect data sent over an untrusted network?
A) Use appropriate encryption and secure communication protocols B) Send passwords in plain text C) Disable authentication D) Use public credentials
34. What does a VPN generally provide?
A) An encrypted connection or tunnel between a device and a VPN endpoint B) An encrypted connection or tunnel between a device and a VPN endpoint C) A new physical network cable D) A method of creating spreadsheets
35. Why are software and security updates important?
A) They can fix known vulnerabilities and improve security B) They always remove all personal files C) They can fix known vulnerabilities and improve security D) They eliminate the need for passwords
36. Which is a safe practice when collaborating on an online document?
A) Give users only the permissions they need B) Make the document public without checking C) Share administrator credentials D) Give users only the permissions they need
37. What does the principle of least privilege mean?
A) Users receive only the access necessary for their tasks B) Everyone receives administrator access C) No one receives any access D) All files must be public
38. Why should suspicious links be checked before opening?
A) They may lead to phishing pages or malicious content B) They may lead to phishing pages or malicious content C) They increase storage capacity D) They are required for 2FA
39. What is digital equity?
A) Fair opportunity for people to access and benefit from digital information and technologies B) Making every website identical C) Fair opportunity for people to access and benefit from digital information and technologies D) Using only expensive devices
40. What can contribute to a digital divide?
A) Differences in access to devices, connectivity, skills, or resources B) Everyone having equal Internet access C) Identical technology skills D) Differences in access to devices, connectivity, skills, or resources
41. Why is equal access to information important?
A) It supports participation, learning, communication, and opportunity B) It prevents collaboration C) It limits educational access D) It makes information private from everyone
42. Which feature can improve accessibility of digital information?
A) Providing appropriate alternative text for meaningful images B) Providing appropriate alternative text for meaningful images C) Making all text tiny D) Removing keyboard navigation
43. What is an assistive technology?
A) Technology designed to help people perform tasks or access information B) A type of malware C) Technology designed to help people perform tasks or access information D) A database password
44. Which example supports users with visual impairments?
A) Screen reader software B) A larger hard disk only C) A firewall rule D) Screen reader software
45. Why are collaborative tools useful for distributed teams?
A) They allow people in different locations to communicate and work together B) They prevent communication C) They require everyone to be in one room D) They remove the need for security
46. Which is a good strategy for improving digital collaboration?
A) Agree on communication methods, responsibilities, permissions, and security practices B) Agree on communication methods, responsibilities, permissions, and security practices C) Avoid documenting decisions D) Give everyone unrestricted access
47. What is responsible online collaboration?
A) Using digital platforms safely, respectfully, and according to agreed rules B) Sharing confidential information publicly C) Using digital platforms safely, respectfully, and according to agreed rules D) Downloading unknown files
48. Why should organizations train users about phishing and other attacks?
A) Human awareness can reduce successful social-engineering and security incidents B) Training makes encryption unnecessary C) Users cannot affect security D) Human awareness can reduce successful social-engineering and security incidents
49. What is the main purpose of a security protocol?
A) To establish rules and procedures that help protect communication or system resources B) To increase monitor resolution C) To replace every database D) To create social media posts
50. Which action best supports secure online collaboration?
A) Use trusted platforms, appropriate access controls, strong authentication, and secure data transmission B) Use trusted platforms, appropriate access controls, strong authentication, and secure data transmission C) Disable authentication D) Share sensitive data through unknown links
This chapter is prepared with reference to the official FBISE HSSC-II Computer Science Assessment Framework and National Curriculum. It covers CS-12-F-01 on safe practices when collaborating on digital or online platforms, CS-12-F-02 on security threats and mitigation including 2FA, biometric verification, secure data transmission and cryptography, and CS-12-F-03 on strategies for equity and equal access to information.