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Question 1 of 60

1. What is not a main structural element of a computer system?

Select one of the following:

● Operating system
● System Bus
● I/O Modules
● Main Memory
● Processor

Explanation

Question 2 of 60

2. Which of the following registers are used by the processor to exchange data
with memory?

Select one of the following:

● I/OAR and I/OBR
● Program status word
● PC and IR
● MAR and MBR

Explanation

Question 3 of 60

3. Which of the following registers are used by the processor to exchange data
with input/output module?

Select one of the following:

● I/OAR and I/OBR
● Program status word
● PC and IR
● MAR and MBR

Explanation

Question 4 of 60

4. Which of the following element of a computer system controls the operation of
the computer and performs its data processing functions?

Select one of the following:

● Processor
● I/O modules
● Main memory
● System bus

Explanation

Question 5 of 60

5. Which of the following element of a computer system stores data and
programs?

Select one of the following:

● I/O modules
● Processor
● System bus
● Main memory

Explanation

Question 6 of 60

6. Which of the following provides for communication among elements of a
computer system?

Select one of the following:

● I/O modules
● Processor
● System bus
● Main memory

Explanation

Question 7 of 60

7. Which of the following element of a computer system moves data between the
computer and its external environment?

Select one of the following:

● I/O modules
● System bus
● Processor
● Main memory

Explanation

Question 8 of 60

8. The processor contains a single data register, called

Select one of the following:

● AC
● IR
● PC
● PSW

Explanation

Question 9 of 60

9. This register specifies a particular input/output device

Select one of the following:

● I/OBR
● Memory buffer register
● I/OAR
● Memory address register

Explanation

Question 10 of 60

10. This register is used for the exchange of data between an I/O module and the
processor

Select one of the following:

● I/OBR
● Memory buffer register
● I/OAR
● Memory address register

Explanation

Question 11 of 60

11. This register contains the data to be written into memory or which receives the
data read from memory

Select one of the following:

● I/OBR
● memory address register
● memory buffer register
● I/OAR

Explanation

Question 12 of 60

12. This register specifies the location in memory for the next read or write

Select one of the following:

● I/OBR
● Memory buffer register
● I/OAR
● Memory address register

Explanation

Question 13 of 60

13. Index register, segment register, and stack register are example of:

Select one of the following:

● Address register
● Memory register
Memory buffer register
Memory quality register

Explanation

Question 14 of 60

14. Which register contains the address of the next instruction to be fetched?

Select one of the following:

● process counter
● program counter
● execution register
● instruction register

Explanation

Question 15 of 60

15. Which register contains the instruction most recently fetched?

Select one of the following:

● process counter
● program counter
● execution register
● instruction register

Explanation

Question 16 of 60

16. Which register contains condition codes set by the processor hardware as the
result of operations?

Select one of the following:

● Stack pointer
● Program status word
● Accumulator
● Program counter

Explanation

Question 17 of 60

17. The figure 1.4.
1. What is the address of the instruction that is being executed?

Select one of the following:

301
● 941
● 302
● 940

Explanation

Question 18 of 60

17.2. What is the address of the instruction that is being executed?

Select one of the following:

301
● 941
● 302
● 940

Explanation

Question 19 of 60

17.3. What is the address of the instruction that is being executed?

Select one of the following:

● 301
● 941
● 302
● 940

Explanation

Question 20 of 60

17.4. What is the address of the instruction that will be executed next?

Select one of the following:

301
● 941
● 302
● 940

Explanation

Question 21 of 60

17.5. Instruction in the IR will:

Select one of the following:

Load 3 to AC from the memory
● Add 2 to AC from the memory
● Store 3 to AC from the memory
● Add 3 to AC from the memory

Explanation

Question 22 of 60

17.6. Instruction in the IR will:

Select one of the following:

● Load 3 to AC from the memory
● Add 2 to AC from the memory
● Store 3 to AC from the memory
● Add 3 to AC from the memory

Explanation

Question 23 of 60

17.7. Instruction in the IR will:

Select one of the following:

● Store content of AC to the memory
● Add 3 to the memory location from AC
● Store 5 to AC from the memory
● Add 2 to the memory location from AC

Explanation

Question 24 of 60

17.8. What is the memory location of the data that is addressed in the instruction?

Select one of the following:

● 301
● 941
● 302
● 940

Explanation

Question 25 of 60

17.9. What is the memory location of the data that is addressed in the instruction?

Select one of the following:

301
● 941
● 302
● 940

Explanation

Question 26 of 60

17.10. What is the memory location of the data that is addressed in the
instruction?

Select one of the following:

● 301
● 941
● 302
● 940

Explanation

Question 27 of 60

18. The fetched instruction is loaded into the

Select one of the following:

● PC
● Memory
● Accumulator
● IR

Explanation

Question 28 of 60

19. At the beginning of each instruction cycle, the processor fetches an instruction
from the memory. The address of the instruction is held in

Select one of the following:

● PC
● MAR
● MBR
● IR

Explanation

Question 29 of 60

20. The processor is executing ‘Load AC from memory’ instruction. Choose the
correct micro-instructions:

Select one of the following:

● PC -> MAR
M -> MBR
MBR -> IR
IR -> MBR
M -> MAR
MAR -> AC
● PC -> MAR
M -> MBR
MBR -> IR
IR -> MAR
M -> MBR
MBR -> AC
● PC -> MBR
M -> MAR
MAR -> IR
IR -> MAR
M -> MBR
MBR -> AC
● PC -> MAR
M -> MBR
MBR -> AC
IR -> MAR
M -> MBR
MBR -> AC

Explanation

Question 30 of 60

21.1 Choose the micro-instructions that reflect instruction execution stage shown
in the figure below: (четыре вопроса в одном)четыре вопроса в одном))

Select one of the following:

● PC -> MAR 303
M -> MBR 2941
MBR -> IR 2941
● IR -> MAR 2941
AC -> MBR 0005
MBR -> M 0005
● IR -> MAR 941
AC -> MBR 0005
MBR -> M 0005
● IR -> MAR 303
M -> MBR 0005
MBR -> M 0005

Explanation

Question 31 of 60

21.2 Choose true version?

Select one of the following:

● IR -> MAR 941
M -> MBR 0002
MBR ->AC 0005
● PC -> MAR 302
M -> MBR 2941
MBR -> IR 2941
● IR -> MAR 941
M -> MBR 0002
MBR -> AC 0002
● PC -> MAR 301
M -> I/OBR 5941
I/OBR 5941

Explanation

Question 32 of 60

21.3 Choose true version?

Select one of the following:

PC -> MAR 301
M -> MBR 6941
MBR -> IR 5941
● IR -> MAR 941
AC -> MBR 0003
MBR -> M 0003
● IR -> MAR 941
M -> MBR 0002
MBR -> AC 0002
● PC -> MAR 301
M -> MBR 5941
MBR -> IR 5941

Explanation

Question 33 of 60

Choose true version?

Select one of the following:

● PC -> MAR 300
M -> MAR 1940
MBR -> IR 1940
● PC -> MAR 300
M -> MBR 1940
MBR -> IR 1940
● M -> MAR 300
M -> MBR 1940
MBR -> IR 1940
● PC -> MAR 301
M -> MBR 1940
MBR -> IR 1940

Explanation

Question 34 of 60

22. When an I/O device completes an I/O operation, the device issues an interrupt
signal to the processor and then:

Select one of the following:

● The processor finishes execution of the current instruction before
responding to the interrupt
● The processor saves information needed to resume the current program
at the point if interrupt
● The processor loads the program counter with the entry location of the
interrupt-handling routine
● The processor stops execution of the current instruction without finishing
it and responds to the interrupt

Explanation

Question 35 of 60

23. When the time required for the I/O operation is less that the time to complete
the execution of instructions between write operations in the user program, it
is:

Select one of the following:

● Short I/O wait
● Long I/O wait
● Slow I/O wait
● Fast I/O wait

Explanation

Question 36 of 60

24. When the time required for the I/O operation will take much more time than
executing a sequence of user instructions, it is:

Select one of the following:

● Short I/O wait
● Fast I/O wait
● Long I/O wait
● Slow I/O wait

Explanation

Question 37 of 60

25. Most I/O devices are:

Select one of the following:

● much slower than the processor
● much processor than the slower
both

Explanation

Question 38 of 60

26. If there no interrupts, after each write operation, the processor must:?????

Select one of the following:

● Pause and remain idle until the I/O operation finishes
● Save the PSW and PC onto control stack
● Finish execution of current instruction
● Load new PC value

Explanation

Question 39 of 60

27. The processor determined that there is a pending interrupt and sent an
acknowledgement signal to the device that issued the interrupt. Then, the
processor:

Select one of the following:

The processor tests for a pending interrupt request, determines that there is one, and
sends an acknowledgment signal to the device that issued the interrupt.The
acknowledgment allows the device to remove its interrupt signal
жай гана ана сурактты зубри и все) Удачи

Explanation

Question 40 of 60

28. The figure 1.5, 1.8, 1.9, 1.12, 1.13, 1.14, 1.19: (четыре вопроса в одном)м)ного вопросов в одном))
1. The following figure demonstrates:

Select one of the following:

Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 41 of 60

28,2. The following figure demonstrates:

Select one of the following:

Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 42 of 60

28,3. The following figure demonstrates:

Select one of the following:

Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 43 of 60

28,4. The figure a) demonstrates the program timing diagram for:

Select one of the following:

Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 44 of 60

28,5. The figure b) demonstrates the program timing diagram for

Select one of the following:

● Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 45 of 60

28,6. The figure a) demonstrates the program timing diagram for:

Select one of the following:

● Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 46 of 60

28,7. The figure b) demonstrates the program timing diagram for

Select one of the following:

Interrupts; fast I/O wait
● Interrupts; short I/O wait
● Interrupts; long I/O wait
● No interrupts
● Interrupts; slow I/O wait

Explanation

Question 47 of 60

28,8. The figure below shows

Select one of the following:

Parallel interrupt processing
● Nested interrupt processing
● Sequential interrupt processing
● Parent-child interrupt processing

Explanation

Question 48 of 60

28,9. The figure below shows

Select one of the following:

Parallel interrupt processing
● Nested interrupt processing
● Sequential interrupt processing
● Parent-child interrupt processing

Explanation

Question 49 of 60

28,10. The figure below shows

Select one of the following:

Parallel interrupt processing
● Nested interrupt processing
● Sequential interrupt processing
● Time Sequence of Multiple Interrupts

Explanation

Question 50 of 60

28,11. As one goes down the memory hierarchy

Select one of the following:

● increasing frequency of access to the memory by the processor
● increasing capacity
● decreasing access time
● increasing cost per bit

Explanation

Question 51 of 60

28,12. The given flowchart is an example of:

Select one of the following:

● Manual memory access
● Programmed I/O
● Interrupt-driven I/O
● Direct memory access (DMA)

Explanation

Question 52 of 60

28,13. The given flowchart is an example of:

Select one of the following:

● Manual memory access
● Programmed I/O
● Interrupt-driven I/O
● Direct memory access (DMA)

Explanation

Question 53 of 60

28,14. The given flowchart is an example of:

Select one of the following:

● Manual memory access
● Programmed I/O
● Interrupt-driven I/O
● Direct memory access (DMA)

Explanation

Question 54 of 60

29. Complete the relationship concerning the memory systems: faster access time
–

Select one of the following:

● smaller cost per bit
● faster access speed
● greater cost per bit
● lower capacity

Explanation

Question 55 of 60

30. Complete the relationship concerning the memory systems: greater capacity –

Select one of the following:

● smaller cost per bit
● faster access speed
● greater cost per bit
● lower capacity

Explanation

Question 56 of 60

31. Complete the relationship concerning the memory systems: greater capacity –

Select one of the following:

● faster access speed
● greater cost per bit
● slower access time
● lower capacity

Explanation

Question 57 of 60

33. The smaller, more expensive, faster memory is:

Select one of the following:

● Register
● Main memory
● Cache
● Disk drive

Explanation

Question 58 of 60

34. If the accessed word is found in the faster memory, that is defined as a:

Select one of the following:

● evrika
● hit
● win
● bingo

Explanation

Question 59 of 60

35. If the accessed word is not found in the faster memory, that is defined as a:

Select one of the following:

● Loss
● zero
● miss
● ricochet

Explanation

Question 60 of 60

36. This type of memory is nonvolatile:

Select one of the following:

● Main memory
● Cache
● Secondary memory
● Register

Explanation

Check answer

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Question 1 of 60

1. What is not a main structural element of a computer system?

Select one of the following:

Explanation

Question 2 of 60

2. Which of the following registers are used by the processor to exchange data with memory?

Select one of the following:

Explanation

Question 3 of 60

3. Which of the following registers are used by the processor to exchange data with input/output module?

Select one of the following:

Explanation

Question 4 of 60

4. Which of the following element of a computer system controls the operation of the computer and performs its data processing functions?

Select one of the following:

Explanation

Question 5 of 60

5. Which of the following element of a computer system stores data and programs?

Select one of the following:

Explanation

Question 6 of 60

6. Which of the following provides for communication among elements of a computer system?

Select one of the following:

Explanation

Question 7 of 60

7. Which of the following element of a computer system moves data between the computer and its external environment?

Select one of the following:

Explanation

Question 8 of 60

8. The processor contains a single data register, called

Select one of the following:

Explanation

Question 9 of 60

9. This register specifies a particular input/output device

Select one of the following:

Explanation

Question 10 of 60

10. This register is used for the exchange of data between an I/O module and the processor

Select one of the following:

Explanation

Question 11 of 60

11. This register contains the data to be written into memory or which receives the data read from memory

Select one of the following:

Explanation

Question 12 of 60

12. This register specifies the location in memory for the next read or write

Select one of the following:

Explanation

Question 13 of 60

13. Index register, segment register, and stack register are example of:

Select one of the following:

Explanation

Question 14 of 60

14. Which register contains the address of the next instruction to be fetched?

Select one of the following:

Explanation

Question 15 of 60

15. Which register contains the instruction most recently fetched?

Select one of the following:

Explanation

Question 16 of 60

16. Which register contains condition codes set by the processor hardware as the result of operations?

Select one of the following:

Explanation

Question 17 of 60

17. The figure 1.4. 1. What is the address of the instruction that is being executed?

Select one of the following:

Explanation

Question 18 of 60

17.2. What is the address of the instruction that is being executed?

Select one of the following:

Explanation

Question 19 of 60

17.3. What is the address of the instruction that is being executed?

Select one of the following:

Explanation

Question 20 of 60

17.4. What is the address of the instruction that will be executed next?

2. Which of the following registers are used by the processor to exchange data
with memory?

3. Which of the following registers are used by the processor to exchange data
with input/output module?

4. Which of the following element of a computer system controls the operation of
the computer and performs its data processing functions?

5. Which of the following element of a computer system stores data and
programs?

6. Which of the following provides for communication among elements of a
computer system?

7. Which of the following element of a computer system moves data between the
computer and its external environment?

10. This register is used for the exchange of data between an I/O module and the
processor

11. This register contains the data to be written into memory or which receives the
data read from memory

16. Which register contains condition codes set by the processor hardware as the
result of operations?

17. The figure 1.4.
1. What is the address of the instruction that is being executed?

17.10. What is the memory location of the data that is addressed in the
instruction?

19. At the beginning of each instruction cycle, the processor fetches an instruction
from the memory. The address of the instruction is held in

20. The processor is executing ‘Load AC from memory’ instruction. Choose the
correct micro-instructions:

21.1 Choose the micro-instructions that reflect instruction execution stage shown
in the figure below: (четыре вопроса в одном)четыре вопроса в одном))

22. When an I/O device completes an I/O operation, the device issues an interrupt
signal to the processor and then:

23. When the time required for the I/O operation is less that the time to complete
the execution of instructions between write operations in the user program, it
is:

24. When the time required for the I/O operation will take much more time than
executing a sequence of user instructions, it is: