MCQs / Computer Science / Performance, Power, Platform Constraints and Emerging Technologies

Performance, Power, Platform Constraints and Emerging Technologies MCQs — Computer Science (page 2)

33 multiple-choice questions on Performance, Power, Platform Constraints and Emerging Technologies 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.

26. Sending heavy computation to a server (cloud offloading) is worthwhile when:

  1. The battery is full
  2. The data is huge and the computation tiny
  3. The computation is heavy and the data to send is small
  4. There is no network

Answer: C) The computation is heavy and the data to send is small

Explanation: Radio costs must be smaller than CPU savings.

Discuss this question

27. Which component usually consumes the most energy during normal phone use?

  1. The speaker
  2. The vibration motor
  3. The display
  4. The SIM card

Answer: C) The display

Explanation: Screen brightness and refresh rate dominate typical energy use.

Discuss this question

28. Doze mode was introduced in Android:

  1. 9 Pie
  2. 6.0 Marshmallow
  3. 12
  4. 4.4

Answer: B) 6.0 Marshmallow

Explanation: Doze arrived in Android 6.0.

Discuss this question

29. The smart-home interoperability standard supported by Android and iOS is:

  1. AAB
  2. SOAP
  3. GSM
  4. Matter

Answer: D) Matter

Explanation: Matter connects smart-home devices across ecosystems.

Discuss this question

30. Combining many small network requests into fewer larger ones is called:

  1. Throttling
  2. Offloading
  3. Polling
  4. Batching

Answer: D) Batching

Explanation: Batching lets the radio return to idle sooner.

Discuss this question

31. Raast in Pakistan is an example of which emerging mobile trend?

  1. Foldable phones
  2. Instant digital payments
  3. AR gaming
  4. Satellite messaging

Answer: B) Instant digital payments

Explanation: Raast is the State Bank's instant payment system used through apps.

Discuss this question

32. Dark theme saves power mainly on which displays?

  1. CRT
  2. E-ink
  3. LCD
  4. OLED/AMOLED

Answer: D) OLED/AMOLED

Explanation: OLED pixels showing black are off.

Discuss this question

33. For a weather app, the best location priority is usually:

  1. No location ever
  2. Balanced or low power, updated occasionally
  3. Continuous GPS in the background
  4. PRIORITYHIGHACCURACY every second

Answer: B) Balanced or low power, updated occasionally

Explanation: City-level accuracy is enough and saves battery.

Discuss this question

Previous Page 2 of 2

Practise Performance, Power, Platform Constraints and Emerging Technologies MCQs

More Computer Science chapters