NCUK - Quiz Time (Season 01)

Explain the two's complement method for converting negative decimals to binary.

• Convert to binary, then invert all bits

• Convert absolute value to binary, invert all bits, add 1

• Invert all bits, add 1, then convert to binary

• Subtract 1 from the absolute value, then convert to binary

What is the binary representation of the decimal number 25?

• 10110

• 10011

• 11101

• 11001

In Von Neumann architecture, what does the Control Unit (CU) primarily manage?

• Arithmetic operations

• Data storage

• Execution of instructions

• Communication between CPU and I/O devices

What issue is commonly referred to as the "Von Neumann Bottleneck"?

• The limited number of CPU registers

• The shared bus for instructions and data causing potential performance delays

• Insufficient cache memory for storing frequently accessed instructions

• The inability to perform concurrent processing tasks

What is the significance of the leftmost bit in two's complement binary representation?

• It determines the sign of the number.

• It indicates the number of bits used for the fractional part.

• It determines the magnitude of the number.

• It represents the decimal point position.

Which type of register holds the address of the next instruction to be executed?

• Accumulator

• Program Counter (PC)

• Instruction Register (IR)

• Stack Pointer (SP)

Which register is commonly used to store intermediate results of arithmetic operations?

• Stack Pointer (SP)

• Memory Data Register (MDR)

• Accumulator

• Instruction Register

Convert the decimal number -12 to binary using two's complement.

• 1001

• 1110

• 1101

• 1010

What role does the Instruction Register (IR) play in the Fetch-Decode-Execute cycle?

• It stores the address of the next instruction

• It temporarily holds the current instruction being executed

• It contains the result of the executed instruction

• It tracks the current address of the stack

What is the primary purpose of registers in a CPU?

• To store permanent data

• To perform arithmetic operations

• To provide fast, temporary storage for data and instructions

• To manage input and output operations