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Punjab (PTB) · Quarter book test · Free

9th Class Computer 1st Quarter Book Paper

40 marks · 1 hour · 28 questions. Covers: CHAP 1: INTRODUCTION TO COMPUTATIONAL SYSTEMS, CHAP 2: SYSTEM DESIGN AND TROUBLESHOOTING, CHAP 3: COMPUTER NETWORKS.

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9th Class Computer 1st Quarter Book Paper

9th Class · Computer · Punjab (PTB)

Name: ____________Roll No: ________Class/Section: ________Date: ________Total marks: 40Time: 1 hour

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

  1. In the school principal example, the principal’s office represents:

    1. The hub

    2. A node

    3. The bus cable

    4. The internet

  2. What is the primary purpose of Application Software?

    1. To help users perform specific tasks

    2. To manage system resources

    3. To act as a bridge for hardware

    4. To provide a platform for other software

  3. Which of the following is important for maintaining confidentiality, integrity, and availability of data?

    1. Improving Security

    2. Increasing storage

    3. Changing display

    4. Buying new hardware

  4. Network security involves measures to:

    1. Increase internet speed

    2. Protect data and prevent unauthorized access

    3. Assign IP addresses

    4. Translate domain names

  5. Microsoft Windows and Linux are examples of:

    1. Utility Programs

    2. Device Drivers

    3. Operating Systems

    4. Web Browsers

  6. What is the output of an OR gate if one input is true?

    1. True

    2. False

    3. Zero

    4. Undefined

  7. Managing sessions between applications is done by the:

    1. Presentation Layer

    2. Session Layer

    3. Application Layer

    4. Transport Layer

  8. How is 1’s Complement calculated?

    1. By adding 1 to the binary number

    2. By dividing the binary number by 2

    3. By inverting all bits

    4. By removing the sign bit

  9. If your computer is slow while multitasking, what component should you add to improve performance?

    1. More RAM

    2. New Mouse

    3. Larger LCD

    4. New Cables

  10. Data sent over the internet is divided into small segments called:

    1. Frames

    2. Packets

    3. Bits

    4. Segments only

  11. What is the function of system software?

    1. To facilitate communication between hardware and software

    2. To perform specific tasks for the user

    3. To create visual content

    4. To organize and analyze data

  12. How had the vulnerability exploited by WannaCry been fixed before the attack?

    1. By replacing the hard drive

    2. By restarting the system

    3. By uninstalling applications

    4. It was patched in a security update

Q2. Short questions (Attempt any 8 of 12 · 8 × 2 = 16)

  1. What happens during the Fetching stage of the von Neumann cycle?

  2. What is the virtual private networks (VPN)?

  3. What is an truth table?

  4. How does Unicode handle characters from different languages?

  5. What is the main function of a protocol in data communication?

  6. Write the issues caused by computer overheating and state its primary solution.

  7. How do systems interact with the environment?

  8. What is IPv6?

  9. What is the purpose of a logic diagram?

  10. How does System Software act as a bridge?

  11. Why is the Data Link Layer compared to traffic lights?

  12. How many input combinations are there for a 3-input logic circuit?

Q3. Long questions (Attempt any 3 of 4 · 3 × 4 = 12)

  1. What is a logic gate? Describe AND, OR, NOT, NAND, XOR logic gates with their operations and their expressions. 

  2. Compare Bus topology and Star topology in terms of structure, advantages, and disadvantages. Support your answer with examples.

  3. What is the process of converting a hexadecimal number to a binary number and a binary number to a hexadecimal number? Explain with examples. 

  4. Describe the concept of duality in Boolean algebra and provide an example to illustrate it.