Computer Organization and Architecture 2018 question

Sub Code: - 1618304



Time : 3Hrs

Sem. III(New)


Full Marks : 70

Pass marks : 28


Group A

Choose the most suitable answer from the following options: -   (1*20=20)

(i) A group of bits that tell the computer to perform a specific operation in known as

(a) Instruction code
(b) Micro operation
(c) Accumulator
(d) Register

(ii) An address is main memory is called

(a) Physical address
(b) Logical address
(c) Memory address
(d) Word address

(iii) A register capable of shifting its binary information either to left is called a:-

(a) Parallel register
(b) Serial Register
(c) Shift register
(d) Storage register

(iv) Which the following are not a machine instructions

(a) MOV
(b) ORG
(c) END
(d) Both(a) and (b) 

(v) Memory unit accessed by content is called 

(a) ROM
(b) Programmable memory
(c) Virtual memory
(d) Associative Memory

(vi) In a system, which has 32 register the register id is_____ long

(a) 16 bits
(b) 8 bits
(c) 5 bits
(d) 6 bits

(vii) The two phase of executing an instruction are:-

(a) Decoding and storage
(b) Fetching and executing
(c) Decode and fetch
(d) None of these

(viii) The addressing mode which makes use of id-direction pointer is____________

(a) Indirect addressing mode
(b) Index addressing mode
(c) Relative addressing mode
(d) Offset addressing mode

(ix) The addressing mode, which uses the PC instead f a general purpose register is___________

(a) Indexed with offset
(b) Relative 
(c) Direct 
(d) Both(a) and (b)

(x) The addressing mode, where you directly specify the operand value is_______

(a) Register - direct
(b) Immediate
(c) Definite
(d) Relative

(xi) __________ converts the programs written in assembly language into machine language instructions.

(a) Compiler
(b) Interpreter 
(c) Assemble
(d) Converter

(xii) The instruction like Mov and ADD are called as_______

(a) Opcode
(b) Operators
(c) Commands
(d) None of these

(xiii) The interrupt- request line is a part of the 

(a) Data line
(b) Control line
(c) Address line
(d) None of these

(xiv) The DMA transfer are performed by a control circuit called as 

(a) Device interface
(b) DMA Controller
(c) Data controller
(d) Over lookers

(xv) The DMA controller has__________ registers

(a) 4
(b) 2
(c) 3
(d) 1

(xvi) The controller is connected to the ______

(a) Processor bus
(b) System bus
(c) External bus
(d) None of these

(xvii) The register of the controller are_______

(a) 64 bits
(b) 24 bits
(c) 32 bits
(d) 16 bits

(xviii) A collection of lines that connects several devices is called_________

(a) BUS
(b) Peripheral devices
(c) Both (a) and (b)
(d) Internal wires

(xix) Memory address refers to the successive memory words and the machine is called as

(a) Word addressable
(b) Byte addressable
(c) Bit addressable
(d) None of these

(xx) An exception conditions is a computer in a computer system by an external to the CPU is called

(a) Interrupt
(b) Halt
(c) Wait
(d) Process



Answer all Five Questions: -                         (5*4=20) 



2. Discuss about associative memory in brief?


What do you mean by locality of reference?

3. Define pipelining processing in brief?


Draw the basic functional unit of a computer?

4. Differentiate between Hardwired and micro programmed control


Mention the different types of instruction format?

5. Discuss and explain special gates in brief?


Draw and explain the multiplexer in brief?

6. Discuss about Universal gate in brief?


Differentiate between RISC and CISC?

Group:- "C"

Answer all Five Questions: -                         (5*6=30) 


7. What do you mean by Cache memory? Explain different types of cache mapping?


Explain different types of hazards that occur in a pipeline?

8. Describe the data transfer method using DMA .


What do you mean by virtual memory? Discuss how paging helps in implementing virtual memory.

9. Explain about different types of Micro Instruction in details?


Compare paging and segmentation mechanisms for the virtual memory?

10. Explain the Booth's algorithm for multiplication of two signed numbers with examples?


What is Interrupt? Explain different types of Interrupt signal in brief?

11. What is register? Explain various mode of Register with block diagram?


What is Counter? Explain in details about various types of counters? 




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