INTEL Feature MCQ Quiz – Objective Question with Answer for Features of INTEL

1. What are the three stages included in pipelining of 80386?

A. Fetch, decode, execute
B. Fetch, execute, decode
C. Execute, fetch, decode
D. Decode, execute, fetch

Answer: a

The instruction can execute in a single cycle which is done by pipelining the instruction flow. The address calculations are performed as the instruction proceeds down the line. Pipelining may take several cycles, an instruction can potentially be started and completed on every clock edge, thus achieving the single-cycle performance.


2. How instructions and data are accessed to pipeline stages of the 80486 processor?

A. Through an internal unified cache
B. Through external unified cache
C. Through external cache
D. Through multiple caches

Answer: a

In order to have instructions and data in the pipeline, the 80486 has an internal unified cache to contain both data and instructions. This helps in the independency of the processor on external memory.


3. Which of the following processor possesses a similar instruction of 80486?

A. 8086
B. 80286
C. 80386
D. 8080

Answer: c

The instruction set is the same as that of 80386 but there are some additional instructions available when the processor is in protected mode.

4. What are the two external interrupt signals in 80386?

A. IV and NMI
C. INTR and IV
D. PC and NMI

Answer: b

The 80386 has two external interrupt signals which allow external devices to interrupt the processor. The INTR input creates a maskable interrupt while the NMI creates a non-maskable interrupt.


5. How many bit vector number is used in an interrupt cycle of 80386?

A. 4
B. 8
C. 16
D. 32

Answer: b

While an interrupt cycle is running, the processor possesses two interrupts to acknowledge bus cycles and reads an 8-bit vector number. This vector is then used to locate, within the vector table and it has the address of the corresponding interrupt service routine. NMI is automatically assigned as vector number 2.

6. In how many modes does 80386 can run?

A. 2
B. 4
C. 3
D. 5

Answer: c

The 80386 can run in three different modes: the real mode, the protected mode, and a virtual mode. In real mode, the size of each segment is limited to 64 Kbytes and in protected mode, the largest segment size is increased to 4 Gbytes and the virtual mode is a special version of the protected mode.


7. How many bit flag registers does 80386 have?

A. 8
B. 16
C. 32
D. 64

Answer: c

The 32-bit flag register possesses the normal carry zero, auxiliary carry, parity, sign, and overflow flags.


8. Which processor is the derivative of 80386DX?

A. 80387
B. 80386SX
C. 80386 DDX
D. 8087

Answer: b

The derivative of the 80386DX is called the 80386SX which provides the same architecture and lowers cost. To minimize the cost value, it uses an external 16-bit data bus and a 24-bit memory bus.


9. Which of the following is a portable device of Intel?

A. 80386DX
B. 8087
C. 80386SL
D. 80386SX

Answer: c

Intel has 80386SL as the portable PC which helps in controlling power and increases the power efficiency of the processor.


10. Which of the processor has a 5 stage pipeline?

A. 80386
B. 80486
C. 80286
D. 80386DX

Answer: b

80486 has a five-stage pipeline ALU. These include fetch, decode, execute, memory access, and write back. This helps in accessing instruction faster and thus makes the processor faster. 80386DX has a three-stage pipelining which only includes fetching, decoding and execution.

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