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Microprocessors Multiple Choice Questions | MCQs | Quiz

Microprocessor Interview Questions and Answers
Practice Microprocessor questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams.

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•   Machine Language Formats
•   8086 Addressing Modes
•   8086/8088 Instruction Set-1
•   8086/8088 Instruction Set-2
•   8086/8088 Instruction Set-3
•   Assembler Directives
•   Instructions Do's & Don'ts
•   Assembler Programming
•   Stack
•   8086/8088 Stack Structure
•   Interrupt Service Routines
•   8086/8088 Interrupt Cycle
•   Non Maskable Interrupt
•   Interrupt Programming
•   Macros
•   Timings & Delays
•   Semiconductor Interfacing
•   Dynamic RAM Interfacing
•   Interfacing I/O Ports
•   PIO 8255
•   8255 Operation Modes
•   Analog - Digital Converters
•   Stepper Motor Interfacing
•   8254 Interval Timer
•   8259A Interrupt Controller
•   8279 Keyboard Controller
•   8251 USART
•   8257 DMA Controller
•   DMA Transfer & Operations
•   8237 DMA Interface - 1
•   8237 DMA Interface - 2
•   High Storage Capacity
•   Interconnection Topologies
•   Software Aspects
•   Numeric Processor 8087 - 1
•   Numeric Processor 8087 - 2
•   8089 I/O Processor
•   Bus Arbitration & Control
•   Tightly Coupled Systems
•   Multi Microprocessor
•   80286 Salient Features
•   80286 Internal Architecture
•   80286 Signal Descriptions
•   Real Addressing Mode
•   PVAM - 1
•   PVAM - 2
•   Privilege
•   Protection
•   Special Operations
•   80286 System Configuration
•   Bus Hold & HLDA
•   Instruction Set Features - 1
•   Instruction Set Features - 2
•   80287 Math Coprocessor-1
•   80287 Math Coprocessor-2
•   80386DX Salient Features
•   ↓ 80386 ↓
•   Architecture & Signals
•   Register Organisation - 1
•   Register Organisation - 2
•   80386 Data Types
•   80386 Real Address Mode
•   Segmentation
•   Paging
•   80387 Coprocessor
•   80386 Instruction Set
•   80486DX Coprocessor
•   80586 (Pentium) Features
•   System Architecture
•   Intel MMX Architecture
•   MMX Data Types
•   MMX Instruction Set
•   Pentium-Pro & Pentium2 - 1
•   Pentium-Pro & Pentium2 - 2
•   Pentium 4 Features - 1
•   Pentium 4 Features - 2
•   Hyperthreading Technology
•   Pentium Hyperthreading
•   Formal Verification
•   Hybrid Architecture - 1
•   Hybrid Architecture - 2
•   8051 Architecture
•   8051 Register Set
•   8051 Interrupt & Stack - 1
•   8051 Interrupt & Stack - 2
•   8051 Addressing Modes
•   8051 Instruction Set - 1
•   8051 Instruction Set - 2
•   8051 Ports Interfacing - 1
•   8051 Ports Interfacing - 2
•   8051 Interrupt Structure
•   Serial Communication Unit
•   Power Control Register

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Microprocessors Questions and Answers – Salient Features of 80386DX

Posted on March 18, 2014 by Manish

This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Salient Features of 80386DX”.

1. The 80386DX is a processor that supports
a) 8-bit data operand
b) 16-bit data operand
c) 32-bit data operand
d) all of the mentioned
View Answer

Answer: d
Explanation: The 80386DX is a 32-bit processor that supports, 8-bit/16-bit/32-bit data operands.
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2. The 80386DX has an address bus of
a) 8 address lines
b) 16 address lines
c) 32 address lines
d) 64 address lines
View Answer

Answer: c
Explanation: The 80386, with its 32-bit address bus, can address up to 4 GB of physical memory.

3. The number of debug registers that are available in 80386, for hardware debugging and control is
a) 2
b) 4
c) 8
d) 16
View Answer

Answer: c
Explanation: The 80386 offers a set of total eight debug registers DR0-DR7, for hardware debugging and control.

4. The memory management of 80386 supports
a) virtual memory
b) paging
c) four levels of protection
d) all of the mentioned
View Answer

Answer: d
Explanation: The memory management section of 80386 supports the virtual memory, paging and four levels of protection, maintaining full compatibility with 80286.

5. The 80386 enables itself to organize the available physical memory into pages, which is known as
a) segmentation
b) paging
c) memory division
d) none of the mentioned
View Answer

Answer: b
Explanation: The concept of paging which is introduced in 80386, enables it to organize the available physical memory into pages of size 4 KB each, under the segmented memory.
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6. The 80386 consists of
a) on-chip address translation cache
b) instruction set of predecessors with upward compatibility
c) virtual memory space of 64TB
d) all of the mentioned
View Answer

Answer: d
Explanation: The 80386 has on-chip address translation cache, and the instruction set is upward compatible with all its predecessors.

7. 80386DX is available in a grid array package of
a) 64 pin
b) 128 pin
c) 132 pin
d) 142 pin
View Answer

Answer: c
Explanation: The 80386DX is available in a 132-pin grid array package.

8. The operating frequency of 80386DX is
a) 12 MHz and 20 MHz
b) 20 MHz and 33 MHz
c) 32 MHz and 12 MHz
d) all of the mentioned
View Answer

Answer: b
Explanation: The operating frequency of 80386DX is 20MHz and 33 MHz.

9. The 80386 in its protected mode, in its virtual mode of operation, can run the applications of
a) 8086
b) 80286
c) 80287
d) 80387
View Answer

Answer: a
Explanation: The 80386 can run the applications under protected mode, in its virtual 8086 mode of operation.

10. The 80386 in protected mode, supports all software written for
a) 8086 and 80287
b) 80286 and 80287
c) 80287 and 80387
d) 80286 and 8086
View Answer

Answer: d
Explanation: The 80386 in protected mode, supports all software written for 8086 and 80286 (to be executed under the control of memory management and protection abilities of 80386).
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Sanfoundry Global Education & Learning Series – Microprocessors.

Here’s the list of Best Reference Books in Microprocessors.

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Deep Dive @ Sanfoundry:

  1. C# Programming Examples on Files
  2. Java Programming Examples on Inheritance
  3. Object Oriented Programming Questions and Answers
  4. Operating System Questions and Answers
  5. Computer Organization & Architecture Questions and Answers
  6. Microprocessor Questions & Answers
  7. Microprocessors Questions and Answers – Numeric Coprocessor – 80486DX
  8. Embedded Systems Questions and Answers – Architecture of Embedded Systems
  9. Microprocessors Questions and Answers – 80286 Minimum System Configuration, Interfacing Memory and I/O Devices With 80286
  10. Microprocessors Questions and Answers – 80287 Math Coprocessor -2
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He is Linux Kernel Developer and SAN Architect and is passionate about competency developments in these areas. He lives in Bangalore and delivers focused training sessions to IT professionals in Linux Kernel, Linux Debugging, Linux Device Drivers, Linux Networking, Linux Storage & Cluster Administration, Advanced C Programming, SAN Storage Technologies, SCSI Internals and Storage Protocols such as iSCSI & Fiber Channel. Stay connected with him below:
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