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Computer Organization and Architecture (COA) Objective Question Bank-Unit-2
1. Which register is a general purpose processing register.
A . AC
B . PC
C . AR
D . DR
2. The jump and call operations depend on the value of the
A . BR field
B . CD Field
C . AD Field
D . OP Field
3. The microinstructions are divided into how many functional Fields.
A . Four
B . One
C . Three
D . Two
4.The control unit has a ___________________and_______________________.
A . ALU & MU
B . ALU & Registors
C . Micro programmed Control & Hardwired Control
D . controlmemory and mainmemory
5. A computer that employs a micro programmed control unit will have separated into _____________________ and _______________________.
A . Hardware and Software
B . Hardwired control and Micro Programmed Control
C . Both a&b
D . None of the above
6. In the case of, Zero-address instruction method the operands are stored in ______________________
A . Registers
B . Accumulators
C . Push down stack
D . Cache
7. The addressing mode which makes use of in-direction pointers is ______________________
A . Indirect addressing mode
B . Index addressing mode
C . Relative addressing mode
D . Offset addressing mode
8.The addressing mode/s, which uses the PC instead of a general purpose register is ____________________
A . Indexed with offset
B . Relative
C . direct
D . both Indexed with offset and direct
9.The addressing mode, where you directly specify the operand value is ____________________________
A . Immediate
B . Direct
C . Definite
D . Relative
10.._____ addressing mode is most suitable to change the normal sequence of execution of instructions.
A . Relative
B . Indirect
C . Index with Offset
D . Immediate
11..Which addressing mode execute its instructions within CPU without the necessity of reference memory for operands?
A . Implied Mode
B . Immediate Mode
C . Direct Mode
D . Register Mode
12..How is the effective address of base-register calculated?
A . By addition of index register contents to the partial address in instruction
B . By addition of implied register contents to the partial address in instruction
C . By addition of index register contents to the complete address in instruction
D . By addition of implied register contents to the complete address in instruction
13..EA stands for:
A . Effective add
B . Effective absolute
C . Effective address
D . End address
14..In which addressing the operand is actually present in instruction:
A . Immediate addressing
B . Direct addressing
C . Register addressing
D . None of these
15..In which addressing the simplest addressing mode where an operand is fetched from memory is_____:
A . Immediate addressing
B . Direct addressing
C . Register addressing
D . None of these
16..which addressing is a way of direct addressing:
A . Immediate addressing
B . Direct addressing
C . Register addressing
D . None of these
17..In which mode the main memory location holds the EA of the operand:
A . Immediate addressing
B . Direct addressing
C . Register addressing
D . Indirect addressing
18..Which control refers to the track of the address of instructions:
A . Data control
B . Register control
C . Program control
D . None of these
19..In program control the instruction is set for the statement in a:
A . Parallel
B . Sequence
C . Both
D . None
20..How many types of unconditional jumps used in program control are follows:
A . 1
B . 2
C . 3
D . 4
21..Which carry is similar to rotate without carry operations:
A . Rotate carry
B . Rotate through carry
C . Both
D . None
22..In the case of a left arithmetic shift , zeros are Shifted to the ______:
A . Left
B . Right
C . Up
D . Down
23..In the case of a right arithmetic shift the sign bit values are shifted to the_____:
A . Left
B . Right
C . Up
D . Down
24..In micro-programmed approach, the signals are generated by ______
A . Machine instructions
B . System programs
C . Utility tools
D . None of the mentioned
25..A word whose individual bits represent a control signal is ______
A . Command word
B . Control word
C . Co-ordination word
D . Generation word
Relevant Materials :
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-1 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-2 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-3 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-4 - [ COA ]
☞ Computer Organization and Architecture (COA) Objective Question Bank-Unit-5 - [ COA ]
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