A
b) ALU (Arithmetic Logic Unit)
a) Clock Speed
b) I/O Unit
a) 255
Scenario: An engineer needs to address 64KB of memory in a system. Which bit-size microprocessor should they use to handle this memory requirement effectively?
c) 16-bit
Scenario: A microprocessor handles a data word of 16 bits and needs to perform a multiplication. How many bytes are processed at a time by this processor?
b) 2 Bytes
Scenario: You are analyzing a system where two separate memory modules handle code and data independently. Which 8086 architectural feature supports this kind of operation?
c) Segment Registers
Scenario: During debugging, you notice the processor is not fetching the correct instruction from memory. Which component in the 8086 architecture is primarily responsible for instruction fetching?
b) Bus Interface Unit (BIU)
Scenario: In a multi-segmented memory model, an instruction accesses data from another segment. Which 8086 architectural component is involved in this cross-segment operation?
c) Bus Interface Unit
Scenario: An assembly language program needs to perform arithmetic operations. Which register is most likely used to store the result of an arithmetic computation?
a) AX
Scenario: A program needs to perform repeated iterations using a loop counter. Which register is best suited to control the loop iteration in the 8086 microprocessor?
c) CX
Scenario: An instruction fetch process requires the next instruction address. Which register plays a primary role in providing this address?
a) Instruction Pointer (IP)
Scenario: In a subroutine call, the return address is saved for later use. Which register works with the stack to hold this return address?
a) Stack Pointer (SP)
Scenario: A program manipulates data stored in memory, and the address of this data is dynamically calculated. Which registers can be combined to determine the effective address?
b) BP and SI
Scenario: An application developer is working with a register-based CPU that uses general-purpose and special-purpose registers. Which of the following best describes the 8086 programming model?
a) Register-Memory Model
Scenario: In a time-sensitive application, you require efficient data access. How does the use of registers in the 8086 programming model improve performance compared to memory operations?
a) Registers have faster access times than memory.
Scenario: A developer wants to optimize a program using the 8086 microprocessor. Which addressing mode allows the use of base registers and index registers to compute an address?
c) Indexed Addressing
Scenario: A stack-based operation requires accessing local variables. Which register is typically used to manage the stack frame in the 8086 programming model?
c) BP
Scenario: You need to manage a 1 MB memory space with an 8086 microprocessor. How is this memory space organized in terms of segments?
b) 16 segments of 64 KB each
Scenario: A programmer wants to directly access data in a specific memory segment. How is the segment address and offset combined to calculate the physical address?
b) (Segment Address × 16) + Offset Address
Scenario: The 8086 microprocessor uses overlapping segments for memory management. How much memory overlap can occur between two consecutive segments?
c) 16 KB
Scenario: You want to address a specific byte in a 1 MB memory space. How many bits are required for the complete physical address?
b) 20 bits
Scenario: A system requires large data manipulation in memory. How does segmentation in the 8086 microprocessor benefit this requirement?
c) Efficiently manages memory and data access
Scenario: In a large software project, different code segments are stored separately in memory. How does the segment register facilitate code management?
c) By holding the base address of a segment
Scenario: During system initialization, the processor needs to access the BIOS. Which segment register holds the address for accessing this low-level system code?
a) CS (Code Segment)