Class 11 Computer Science (SLO Based) Notes 

Unit-1 

"Introduction to Computers"

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Brief/Long Response Questions and Answers:

Q1. What is the Modern use of computers in our daily (today's) life? Explain.

Ans: 

Modern Use of Computors in Today's Life:

Mobile Computing:

  • Small portable devices that allow people to access and share information.
  • They use wireless networks.
  • Mobile devices have limited functions.
  • run on batteries
  • Have a small display, less processing, and less memory
Examples: PDAs, tablet PCs, smartphones, etc.



Internet of Things (IoT)

  • Interconnection between a computer network and physical devices.
  • Devices are equipped with wireless connectivity, embedded software, sensors, cameras microphones, etc.
  • Smart devices which can interact with humans through a wireless connection.
Example: smart homes. House appliances such as AC, lights and electronic devices can be controlled remotely via smartphones.


Cloud computing:

  • Using a remote server for storing and processing data.
  • Eliminates the need for buying and installing computer systems and soft wares at one’s place.
  • Security and other services are provided by another company.
Advantages:
  • Cost-effective. (does not need to buy and maintain the system).
  • More secure and reliable.
  • Access and share information from anywhere via the Internet.

Disadvantages:

  • Requires a high-speed internet connection for accessing and uploading.
  • Privacy and security risks.

Companies that provide cloud computing services:

Google, Microsoft, Citrix system and Amazon


Data centers:

  • A centralized location for collecting, storing, processing, and distributing vast amounts of data.
  • Consists of servers, routers, switches, backup, etc.
  • Data centers require air conditioning, file compression, and security services.
  • It requires a room or an entire building.
  • Banks, universities, and telecom companies require data centers.

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Please Select from below 👇👇

Unit-1 (Important Short Q/A)


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(National Book Foundation - As Federal Textbook Board, Islamabad 
Based on National Curriculum Pakistan 2026-2027 and Onward prescribed by Federal Board of Intermediate and Secondary Education, Islamabad, and All Pakistan Boards) 

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