CISC vs RISC Quiz

What does CISC stand for?

• Complex Instruction Set Computing

• Central Instruction Set Computing

• Common Instruction Set Computing

• Compact Instruction Set Computing

Answer explanation

CISC stands for Complex Instruction Set Computing, which refers to a CPU design that allows for a large set of instructions, enabling more complex operations per instruction compared to simpler architectures.

What does RISC stand for?

• Rapid Instruction Set Computing

• Robust Instruction Set Computing

• Reduced Instruction Set Computing

• Regular Instruction Set Computing

Answer explanation

RISC stands for Reduced Instruction Set Computing. It refers to a CPU design philosophy that emphasizes a small, highly optimized instruction set, allowing for faster execution and simpler hardware compared to complex instruction set architectures.

Which architecture has a fixed size of instruction?

• CISC

• Neither CISC nor RISC

• RISC

• Both CISC and RISC

Answer explanation

RISC (Reduced Instruction Set Computer) architecture is characterized by a fixed size of instructions, typically 32 bits. In contrast, CISC (Complex Instruction Set Computer) has variable instruction sizes.

Which type of processor is known for having a complicated design?

• RISC

• Neither RISC nor CISC

• Both RISC and CISC

• CISC

Answer explanation

CISC (Complex Instruction Set Computing) processors are known for their complicated designs, featuring a large set of instructions that can execute complex tasks in fewer lines of assembly code, unlike RISC (Reduced Instruction Set Computing) which is simpler.

Which architecture typically uses more RAM?

• CISC

• RISC

• Both CISC and RISC

• Neither CISC nor RISC

Answer explanation

CISC (Complex Instruction Set Computing) architectures typically use more RAM because they have a larger set of instructions, which can require more complex data structures and additional memory for instruction storage compared to RISC.

Which type of processor is commonly used in tablets and mobile devices?

• Neither CISC nor RISC

• CISC

• RISC

• Both CISC and RISC

Answer explanation

RISC (Reduced Instruction Set Computing) processors are commonly used in tablets and mobile devices due to their efficiency and lower power consumption, making them ideal for battery-operated devices.

Which architecture can utilize pipelining?

• Both CISC and RISC

• RISC

• Neither CISC nor RISC

• CISC

Answer explanation

RISC architecture is designed for pipelining, allowing multiple instruction phases to overlap, which enhances performance. CISC can also use pipelining, but RISC is more optimized for it, making 'RISC' the best choice here.

Which architecture has a larger code size?

• Both CISC and RISC

• RISC

• Neither CISC nor RISC

• CISC

Answer explanation

CISC (Complex Instruction Set Computing) architectures typically have a larger code size due to their complex instructions that can perform multiple operations in a single instruction, leading to more extensive code compared to RISC.

Which architecture is known for producing more heat?

• RISC

• Both CISC and RISC

• Neither CISC nor RISC

• CISC

Answer explanation

CISC (Complex Instruction Set Computing) architectures typically have more complex instructions, leading to higher power consumption and heat generation compared to RISC (Reduced Instruction Set Computing), which is more efficient.

Which architecture typically has more components on the CPU?

• RISC

• CISC

• Neither CISC nor RISC

• Both CISC and RISC

Answer explanation

CISC (Complex Instruction Set Computing) architectures typically have more components on the CPU, as they support a larger set of instructions and addressing modes, leading to increased complexity compared to RISC (Reduced Instruction Set Computing).