MCQs / Computer Science / Unit 6: Impacts of Computing

Unit 6: Impacts of Computing MCQs — Computer Science

26 multiple-choice questions on Unit 6: Impacts of Computing from Computer Science, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.

1. Which is a significant environmental concern of growing data centres?

  1. Lower water use
  2. Less electronic waste
  3. More paper waste
  4. High energy use and carbon emissions

Answer: D) High energy use and carbon emissions

Explanation: Data centres need huge amounts of electricity for servers and cooling. SLO CS-11-F-02 · Understanding

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2. Which is an example of assistive technology?

  1. A gaming console
  2. A spreadsheet
  3. A screen reader for visually impaired users
  4. A firewall

Answer: C) A screen reader for visually impaired users

Explanation: Text-to-speech, screen magnifiers and hearing aids help people with disabilities and the elderly. SLO CS-11-F-02 · Knowledge

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3. Which is generally the most reliable source of information?

  1. An anonymous social media post
  2. A website full of pop-up adverts
  3. A peer-reviewed journal or official government website
  4. A forwarded WhatsApp message

Answer: C) A peer-reviewed journal or official government website

Explanation: Reliable sources have known authors, evidence, review and dates. SLO CS-11-F-01 · Knowledge

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4. A survey about online shopping is sent only to people who already shop online. The results will suffer from:

  1. Encryption errors
  2. Sampling bias
  3. Syntax errors
  4. Too much randomness

Answer: B) Sampling bias

Explanation: Human bias affects data collection; the sample doesn't represent everyone. SLO CS-11-F-01 · Understanding

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5. Compared with 4G, a key advantage of 5G is:

  1. It needs no towers
  2. It cannot carry video
  3. It works only with cables
  4. Much lower latency and higher data speeds

Answer: D) Much lower latency and higher data speeds

Explanation: Low latency enables real-time uses like remote surgery and connected vehicles. SLO CS-11-F-02 · Knowledge

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6. The digital divide is:

  1. The gap between people who have access to technology and the internet and those who do not
  2. Splitting a hard disk into partitions
  3. The difference between analog and digital signals
  4. Dividing a program into functions

Answer: A) The gap between people who have access to technology and the internet and those who do not

Explanation: It is affected by income, location, age, education and disability. SLO CS-11-F-02 · Knowledge

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7. Copying text from the internet and submitting it as your own work is:

  1. Plagiarism
  2. Paraphrasing with credit
  3. Citation
  4. Encryption

Answer: A) Plagiarism

Explanation: Always cite the original author. SLO CS-11-F-01 · Understanding

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8. Which behaviour shows a student is using information responsibly?

  1. Sharing a shocking news story without checking it
  2. Cross-checking facts from reliable sources before using them
  3. Clicking every link that looks interesting
  4. Using any image found online without permission

Answer: B) Cross-checking facts from reliable sources before using them

Explanation: Verify, cite and respect copyright. SLO CS-11-F-01 · Understanding

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9. Which strategy helps bridge the digital divide?

  1. Using only English-language websites
  2. Making devices more expensive
  3. Providing low-cost internet and digital-skills training in underserved areas
  4. Removing public libraries

Answer: C) Providing low-cost internet and digital-skills training in underserved areas

Explanation: Equitable access needs affordability, infrastructure and skills. SLO CS-11-F-02 · Understanding

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10. Which task is better done by humans than by computing devices when verifying information?

  1. Sorting articles by date
  2. Judging whether a source's argument is fair and in context
  3. Checking millions of links for broken URLs
  4. Counting how often a word appears

Answer: B) Judging whether a source's argument is fair and in context

Explanation: Computers handle large repetitive checks; humans judge meaning, intent and context. SLO CS-11-F-01 · Understanding

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11. Which task is better done by a human than a computer?

  1. detecting spam patterns
  2. matching millions of images against known fakes
  3. understanding sarcasm and cultural context of a post
  4. checking a photo's upload date

Answer: C) understanding sarcasm and cultural context of a post

Explanation: Context and intent need human judgement. SLO CS-11-F-01

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12. Which is a negative impact of increased connectivity?

  1. online education
  2. e-government services
  3. telemedicine
  4. rapid spread of misinformation and cyberbullying

Answer: D) rapid spread of misinformation and cyberbullying

Explanation: Faster sharing also spreads harmful content. SLO CS-11-F-02

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13. A watch that detects a fall and sends an SOS to family is an assistive technology mainly for:

  1. hackers
  2. network engineers
  3. data centres
  4. elderly people

Answer: D) elderly people

Explanation: Fall detection supports the safety of elderly people. SLO CS-11-F-02

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14. The gap between people who have access to ICT and those who do not is the:

  1. digital divide
  2. firewall gap
  3. network topology
  4. bandwidth

Answer: A) digital divide

Explanation: The digital divide is unequal access to devices, Internet and skills. SLO CS-11-F-02

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15. Which is a strategy to bridge the digital divide?

  1. removing local-language content
  2. raising data prices
  3. providing digital-literacy training and affordable rural Internet
  4. banning online learning

Answer: C) providing digital-literacy training and affordable rural Internet

Explanation: Access, affordability and skills reduce the divide. SLO CS-11-F-02

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16. A screen reader that reads text aloud for a blind user is an example of:

  1. e-waste
  2. a firewall
  3. the digital divide
  4. assistive technology

Answer: D) assistive technology

Explanation: Assistive technology helps people with disabilities. SLO CS-11-F-02

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17. In the CRAAP test, "Currency" checks whether the information is:

  1. free of charge
  2. recent and up to date
  3. popular on social media
  4. written in English

Answer: B) recent and up to date

Explanation: Currency is about when it was published or updated. SLO CS-11-F-01

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18. An AI-generated fake video of a real person is a:

  1. deepfake
  2. infographic
  3. prototype
  4. meme

Answer: A) deepfake

Explanation: Deepfakes use AI to create realistic fake audio/video. SLO CS-11-F-01

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19. An online-only survey about Internet usage in Pakistan will have:

  1. confirmation bias only
  2. deepfake bias
  3. no bias
  4. selection (sampling) bias

Answer: D) selection (sampling) bias

Explanation: People without Internet access are excluded from the sample. SLO CS-11-F-01

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20. False information created deliberately to deceive people is:

  1. misinformation
  2. metadata
  3. disinformation
  4. information

Answer: C) disinformation

Explanation: Disinformation is intentional; misinformation is shared by mistake. SLO CS-11-F-01

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21. Opening new tabs to check what other trusted sources say about a website or claim is called:

  1. phishing
  2. debugging
  3. lateral reading
  4. hashing

Answer: C) lateral reading

Explanation: Lateral reading verifies information across sources. SLO CS-11-F-01

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22. Contactless card payment uses:

  1. NFC (near field communication)
  2. fibre optics
  3. Bluetooth only
  4. token passing

Answer: A) NFC (near field communication)

Explanation: NFC works over a few centimetres. SLO CS-11-F-02

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23. Believing news only because it matches what we already think is:

  1. confirmation bias
  2. measurement bias
  3. survivorship bias
  4. sampling bias

Answer: A) confirmation bias

Explanation: Confirmation bias favours information that confirms existing beliefs. SLO CS-11-F-01

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24. Discarded phones, computers and batteries are called:

  1. e-waste
  2. malware
  3. cache
  4. spam

Answer: A) e-waste

Explanation: Electronic waste contains toxic and valuable materials. SLO CS-11-F-02

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25. Which wireless technology connects earbuds to a phone over a short range?

  1. 5G
  2. satellite
  3. Bluetooth
  4. fibre optics

Answer: C) Bluetooth

Explanation: Bluetooth is short-range and low-power. SLO CS-11-F-02

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