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FPSC Lower Division Clerk (LDC) Computer Science: Most Important MCQs with Answers

Practise FPSC Lower Division Clerk (LDC) Computer Science most important MCQs in sets of about 20 questions with instant answers and explanations. This page focuses on critical must-know MCQs to prioritise before the exam, helping you build accuracy and speed for the actual FPSC Lower Division Clerk (LDC) paper.

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Sample FPSC Lower Division Clerk (LDC) Computer Science most important questions

  1. Q1. Which OOP principle allows a method to have different behaviors depending on the object calling it?

    • A) Inheritance
    • B) Encapsulation
    • C) Abstraction
    • D) Polymorphism

    Answer: Polymorphism

  2. Q2. In a hash table, what is the average time complexity for insertion and retrieval?

    • A) O(n)
    • B) O(log n)
    • C) O(n²)
    • D) O(1)

    Answer: O(1)

  3. Q3. What is the time complexity of linear search in an unsorted array?

    • A) O(1)
    • B) O(log n)
    • C) O(n)
    • D) O(n²)

    Answer: O(n)

  4. Q4. In a RIGHT JOIN, which table's rows are all returned regardless of a match?

    • A) Left table
    • B) Both tables equally
    • C) The joined result table
    • D) Right table

    Answer: Right table

  5. Q5. Which network type covers the smallest geographic area, typically a single room or building?

    • A) WAN
    • B) MAN
    • C) CAN
    • D) LAN

    Answer: LAN

Frequently asked questions

What are most important Computer Science MCQs for FPSC Lower Division Clerk (LDC)?

Most Important Computer Science MCQs are critical must-know MCQs to prioritise before the exam. On Imtehan they are grouped into short sets so you can review one topic at a time before moving to timed mocks.

How many FPSC Lower Division Clerk (LDC) Computer Science most important questions can I practise?

Imtehan organises FPSC Lower Division Clerk (LDC) Computer Science questions into multiple sets. Start with the sample questions below, then open a set to practise interactively with scoring and explanations.

Is FPSC Lower Division Clerk (LDC) Computer Science most important practice free?

Yes — you can practise FPSC Lower Division Clerk (LDC) Computer Science MCQs for free on Imtehan. Premium unlocks detailed analytics and unlimited mock attempts.

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