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Computer Fundamentals MCQs for CET 12th Level

Practice 20 free computer fundamentals multiple choice questions for CET 12th Level exam. Instant answers with explanations in Hindi and English.

Strengthen your Computer Fundamentals knowledge for CET 12th Level with our free curated MCQ set. Every question follows real Rajasthan exam patterns. Switch between Hindi and English, and practice daily to build confidence before the exam.

CET 12th Level — Computer Fundamentals

20 Questions • Instant results & explanations • Hindi & English

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Question 1 of 20

Which of the following traits ensures that electronic computers do not suffer from a lack of concentration during prolonged operational periods?

Question 2 of 20

A network transmits a data packet consisting of exactly 32 bits. How many 'Bytes' does this packet contain?

Question 3 of 20

Match List I (CPU Component) with List II (Core Function): List I: a. ALU b. CU c. PC List II: 1. Directs the Instruction Cycle 2. Holds the next instruction's memory address 3. Performs mathematical operations

Question 4 of 20

Assertion (A): First-generation computers were massive, generated enormous heat, and were highly prone to frequent hardware failures. Reason (R): They were constructed using transistors, which consumed vast amounts of electricity to process binary data.

Question 5 of 20

Given below are two statements: Assertion (A): The Output Unit is responsible for converting processed binary data into visual text, physical documents, or audio waves. Reason (R): The computer's internal circuitry, including the CPU, strictly processes information in a human-readable format rather than binary 0s and 1s.

Question 6 of 20

The concept of "GIGO" explicitly underscores that the quality of computer output relies heavily on which specific element?

Question 7 of 20

Assertion (A): The distinction between hardware and software is irrelevant because both are required to run a computer. Reason (R): Hardware represents the tangible mechanics, while software represents the intangible logic.

Question 8 of 20

Which of the following scenarios accurately describes a physical electrical state equivalent to the binary digit '1'?

Question 9 of 20

Which of the following accurately contrasts the critical data conversion processes that occur during the Input and Output stages?

Question 10 of 20

A user is running MS Excel to perform complex financial calculations. According to the software hierarchy, which intermediary layer fundamentally allows MS Excel to communicate with the CPU to execute these calculations?

Question 11 of 20

Based on standard architectural definitions, arrange the following categories of computers in increasing order of their physical size, acquisition cost, and raw processing power: 1. Mainframes 2. Microcomputers 3. Supercomputers 4. Minicomputers

Question 12 of 20

What is the primary operational function of the Input Unit in von Neumann's computer architecture?

Question 13 of 20

Which of the following devices is universally recognized as the earliest mechanical calculating device?

Question 14 of 20

Which specific utility software reorganizes fragmented data on a hard drive to ensure faster access?

Question 15 of 20

When defining the scope of 'Hardware', which of the following characteristics are absolutely necessary?

Question 16 of 20

Which of the following physical memory/storage configurations is NOT typically associated with Fourth Generation computers?

Question 17 of 20

Given that both SRAM and DRAM strictly fall under the classification of volatile Random Access Memory, what fundamental structural trade-off determines their distinct placements within the memory hierarchy?

Question 18 of 20

Which core operational architecture is universally present in all computing devices, regardless of their physical size or complexity?

Question 19 of 20

Consider the following statements regarding computer memory registers: I. The Instruction Register (IR) holds the current instruction while the Control Unit decodes it. II. The Memory Address Register (MAR) holds the actual data payload fetched from the RAM. III. The Memory Buffer Register (MBR) acts as a two-way tollbooth for data payloads. Which of the statements given above is/are correct?

Question 20 of 20

Match List-I (Time Measurement Unit) with List-II (Fraction of a Second): List-I: a. Millisecond b. Microsecond c. Nanosecond d. Picosecond List-II: 1. One-trillionth of a second 2. One-billionth of a second 3. One-thousandth of a second 4. One-millionth of a second

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