Q34.Marks: +2.0UGC NET Paper 2: Computer Science 2nd January 2026 Shift 1
Which of the following are characteristics of RISC architecture:
A. Large instruction set with many adversing modes.
B. Fixed instruction length.
C. Emphasis on software rather than hardware.
D. Simple instruction that execute in one cycle.
Choose the correct answer from the options given below:
1.A, B Only
2.B, C, D Only✓ Correct
3.A, C, D only
4.A, B, C, D
Solution
The correct answer is Option 2.
Key Points
RISC (Reduced Instruction Set Computer) architecture focuses on a simplified set of instructions, allowing for faster execution and higher efficiency.
Characteristic B: RISC architecture uses fixed instruction length, which simplifies instruction decoding and pipelining, leading to higher performance.
Characteristic C: It emphasizes software rather than hardware, meaning complex operations are handled by software, reducing hardware complexity.
Characteristic D: RISC instructions are simple and execute in one cycle, making processing more efficient.
Characteristic A is not applicable to RISC as it typically involves a small instruction set with limited addressing modes.
Additional Information
Advantages of RISC Architecture:
Improved performance due to reduced instruction complexity.
Facilitates efficient pipelining and parallelism.
Simpler hardware design compared to CISC (Complex Instruction Set Computer).
Applications of RISC Architecture:
Used in modern processors such as ARM (used in smartphones and tablets).
Widely implemented in embedded systems and high-performance computing.
Key Differences Between RISC and CISC:
RISC has a small instruction set, while CISC has a large instruction set with many addressing modes.
RISC emphasizes software-based solutions, whereas CISC relies on hardware to handle complex instructions.
RISC instructions typically execute in one cycle, while CISC instructions may take multiple cycles.
