Class 11 Computer Science (SLO Based) Notes 
For the Examination 2023-2024 and onwards under the 
Federal Board of Intermediate and Secondary Education (FBISE), Islamabad, Punjab Boards, Rawalpindi, Lahore, Board, and All other boards in Pakistan and abroad. 
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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:

1. 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.



2. 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.


3. Cloud computing:

  • Using a remote server for storing and processing data.
  • Eliminates the need for buying and installing computer systems and software 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


4. 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: Overview of Computer System

Short (Q/A):-

Long (Detailed) (Q/A):-



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