Computer Organization

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Computer Organization

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Topic Questions: 23
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Open its course - Computer Organization

Multiple Choice Questions for Computer Organization

1 WHich hazards arise when an instruction depends on the results of a previous instruction in a way that is exposed by the overlapping of instructions in pipeline.
1. Control
2. Data
3. Structural
4. No
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2 FPGA stands for
1. Fast Programming Got Assembly
2. Fourier Pragramming Gate Array
3. Field Programmable Gate Array
4. None of Above
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3 Which of the following instructions change the contents of the source operand
1. CMP
2. XCHG
3. MOV
4. SWAP
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4 In the instruction WORD1 DW 00FFH, the High byte of WORD1 contains
1. 00
2. FF
3. 0F
4. 00FF
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5 8. A ______________ register contains the address of the next instruction.
1. DX
2. DS
3. IP
4. CX
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6 The 8086 processor assigns __________ bit physical address to its memory location
1. 24
2. 20
3. 16
4. 8
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7 The unsigned jumps operate on which of the following?
1. PF and SF
2. ZF, OF and SF
3. ZF, CF
4. SF, OF
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8 To assign a constant to a name, ________ pseudo-op is used.
1. ENDP
2. MAIN PROC
3. DW
4. EQU
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9 SAR (operation) operates like SHR (operation), except that the value of the ___________ bit/bits is/are preserved.
1. None
2. Most significant
3. Both least and most significant
4. Least significant
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10 If AX = FFFFh (-1) and CL =3, the instruction SAL AX, CL will yield _____________
1. 4
2. -8
3. 8
4. -4
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11 There are __________ categories of unconditional jumps
1. 4
2. 0
3. 2
4. 3
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12 If CX contains zero when the LOOP is entered, the LOOP instruction cause CX to be decremented to FFFFh. _________________ jump is used to avoid such condition.
1. JG
2. JNLE
3. JCXZ
4. JNZ
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13 If AL (register) contains even number, ___________ mask is used to test whether or not it is even or odd number
1. 10000000
2. 00000001
3. 00000010
4. 00000000
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14 If 'b' represents a bit (0 or 1) then b AND 1 =
1. 0
2. b
3. ~b
4. 1
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15 In ______________loop the condition is checked at the top of the loop. If condition is false, the program goes on to whatever follows.
1. Repeat
2. For
3. While
4. None
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16 The range of signed numbers that can be stored in a byte is
1. -32768 to 32767
2. -128 to 127
3. -127 to 128
4. 0-65535
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17 Function 01h of DOS interrupt is used for
1. Single character output
2. Single character input
3. Dos exit
4. String output
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18 The address of code segment begins at address
1. 0F8A:0000
2. 0F89:0000
3. 0F69:0000
4. 0F88:0000
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19 In the instruction MOV CX, 05H; initialize counter, the operand is/are.
1. MOV CX
2. MOV CX,05H
3. CX, 05H
4. CX
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20 In FLAGS register, the status flags are located in bit position
1. 8,9 and 10
2. 0,1,2,3,4,5
3. 0,2,4,6,7,9,11
4. 0,2,4,6,7,11
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21 When an instruction is read from the memory, it is called
1. Memory Read cycle
2. Fetch cycle
3. Instruction cycle
4. Memory write cycle
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22 An instruction pipeline can be implemented by means of
1. LIFO buffer
2. FIFO buffer
3. Stack
4. None of the above
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23 One memory with a global address space and many CPU’s is called the
1. Global Memory Architecture
2. Shared Memory Architecture
3. Network Memory Architecture
4. All of the above
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Computer Organization

Multiple Choice Questions for Computer Organization

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