Basics of Computer Architecture Solved MCQs

1.

RTL stands for:

A. Random transfer language
B. Register transfer language
C. Arithmetic transfer language
D. All of these
Answer» B. Register transfer language
2.

Which operations are used for addition, subtraction, increment, decrement and complement function:

A. Bus
B. Memory transfer
C. Arithmetic operation
D. All of these
Answer» D. All of these
3.

The method of writing symbol to indicate a provided computational process is called as a:

A. Programming language
B. Random transfer language
C. Register transfer language
D. Arithmetic transfer language
Answer» A. Programming language
4.

Which language is termed as the symbolic depiction used for indicating the series:

A. Random transfer language
B. Register transfer language
C. Arithmetic transfer language
D. All of these
Answer» B. Register transfer language
5.

The register that includes the address of the memory unit is termed as the :

A. MAR
B. PC
C. IR
D. None of these
Answer» A. MAR
6.

In register transfer the processor register as:

A. MAR
B. PC
C. IR
D. RI
Answer» D. RI
7.

How many types of micro operations:

A. 2
B. 4
C. 6
D. 8
Answer» B. 4
8.

Which are the operation that a computer performs on data that put in register:

A. Register transfer
B. Arithmetic
C. Logical
D. All of these
Answer» D. All of these
9.

In memory read the operation puts memory address on to a register known as :

A. PC
B. ALU
C. MR
D. All of these
Answer» C. MR
10.

Which operation puts memory address in memory address register and data in DR:

A. Memory read
B. Memory Write
C. Both
D. None
Answer» B. Memory Write
11.

In the following indexed addressing mode instruction, MOV 5(R1), LOC the effective address is              

A. EA = 5+R1
B. EA = R1
C. EA = [R1]
D. EA = 5+[R1]
Answer» D. EA = 5+[R1]
12.

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
Answer» A. Indirect addressing mode
13.

           addressing mode is most suitable to change the normal sequence of execution of instructions.

A. Relative
B. Indirect
C. Index with Offset
D. Immediate
Answer» A. Relative
14.

The effective address of the following instruction is MUL 5(R1,R2).

A. 5+R1+R2
B. 5+(R1*R2)
C. 5+[R1]+[R2]
D. 5*([R1]+[R2])
Answer» C. 5+[R1]+[R2]
15.

The addressing mode, where you directly specify the operand value is                

A. Immediate
B. Direct
C. Definite
D. Relative
Answer» A. Immediate
16.

Which of the following register is used in the control unit of the CPU to indicate the next instruction which is to be executed ?

A. Accumulator
B. Index register
C. Instruction decoder
D. Program counter
Answer» D. Program counter
17.

If a processor does not have any stack pointer register, then

A. It cannot have subroutine call instruction
B. It can have subroutine call instruction, but no nested subroutine
C. Nested subroutine calls are possible, but interrupts are not
D. All sequences of subroutine calls and also interrupts are
Answer» D. All sequences of subroutine calls and also interrupts are
18.

The Sun micro systems processors usually follow            architecture.

A. CISC
B. ISA
C. ULTRA SPARC
D. RISC
Answer» D. RISC
19.

Which of the architecture is power efficient?

A. CISC
B. RISC
C. ISA
D. IANA
Answer» B. RISC
20.

The master indicates that the address is loaded onto the BUS, by activating signal.

A. MSYN
B. SSYN
C. WMFC
D. INTR
Answer» A. MSYN
21.

In IBM’s S360/370 systems lines are used to select the I/O devices.

A. SCAN in and out
B. Connect
C. Search
D. Peripheral
Answer» A. SCAN in and out
22.

The transmission on the asynchronous BUS is also called            

A. Switch mode transmission
B. Variable transfer
C. Bulk transfer
D. Hand-Shake transmission
Answer» D. Hand-Shake transmission
23.

The BUS that allows I/O, memory and Processor to coexist is                

A. Attributed BUS
B. Processor BUS
C. Backplane BUS
D. External BUS
Answer» C. Backplane BUS
24.

The chip can be disabled or cut off from an external connection using              

A. Chip select
B. LOCK
C. ACPT
D. RESET
Answer» A. Chip select
25.

The less space consideration as lead to the development of (for large memories).

A. SIMM’s
B. DIMS’s
C. SRAM’s
D. Both SIMM’s and DIMS’s
Answer» D. Both SIMM’s and DIMS’s
26.

The reason for the implementation of the cache memory is                  

A. To increase the internal memory of the system
B. The difference in speeds of operation of the processor and memory
C. To reduce the memory access and cycle time
D. All of the mentioned
Answer» B. The difference in speeds of operation of the processor and memory
27.

The correspondence between the main memory blocks and those in the cache is given by                    

A. Hash function
B. Mapping function
C. Locale function
D. Assign function
Answer» B. Mapping function
28.

The approach where the memory contents are transferred directly to the processor from the memory is called              

A. Read-later
B. Read-through
C. Early-start
D. None of the mentioned
Answer» C. Early-start
29.

The algorithm to remove and place new contents into the cache is called                

A. Replacement algorithm
B. Renewal algorithm
C. Updation
D. None of the mentioned
Answer» A. Replacement algorithm
30.

Consider a memory organised into 8K rows, and that it takes 4 cycles to complete a read operation. Then the refresh overhead of the chip is              

A. 0.0021
B. 0.0038
C. 0.0064
D. 0.0128
Answer» B. 0.0038
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