1. A collection of lines that connects several devices is called ..............
Correct : A. bus
2. A complete microcomputer system consist of ...........
Correct : D. all of the above
3. PC Program Counter is also called ...................
Correct : A. instruction pointer
4. In a single byte how many bits will be there?
Correct : A. 8
5. CPU does not perform the operation ..................
Correct : A. data transfer
6. The access time of memory is ............... the time required for performing any single CPU operation.
Correct : A. longer than
7. Memory address refers to the successive memory words and the machine is called as ............
Correct : A. word addressable
8. A microprogram written as string of 0's and 1's is a .............
Correct : D. binary micro-program
9. A pipeline is like ....................
Correct : A. an automobile assembly line
10. Data hazards occur when .....................
Correct : B. pipeline changes the order of read/write access to operands
11. Processors of all computers, whether micro, mini or mainframe must have
Correct : D. all of above
12. What is the control unit's function in the CPU?
Correct : D. to decode program instruction
13. What is meant by a dedicated computer?
Correct : B. which is assigned to one and only one task
14. Which of the following code is used in present day computing was developed by IBM corporation?
Correct : D. ebcdic code
15. When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the
Correct : D. stack
16. A microprogram written as string of 0's and 1's is a
Correct : D. binary microprogram
17. Interrupts which are initiated by an instruction are
Correct : B. external
18. Memory access in RISC architecture is limited to instructions
Correct : C. sta and lda
19. From where interrupts are generated?
Correct : D. i/o devices
20. The output of a gate is low when at least one of its input is low . It is true for
Correct : A. and gate
21. Which one of the following is most suitable to make a parity checker
Correct : C. exclusive- or gate
22. What is the minimum number of flip-flops required in a counter to count 100 pulses?
Correct : B. seven
23. For a RS flip-flop constructed with NAND gates and input R=1 and s=1 the state is
Correct : D. unused state
24. The advantage of RISC processor over CISC processor is that
Correct : B. an instruction can be executed in one cycle
25. Which of the following is true about interrupts?
Correct : A. they are generated when memory cycles are stolen
26. Te devices connected to a microprocessor can use the data bus:
Correct : C. only when it’s sending or receiving data
27. Intel 8080 microprocessor has an instruction set of 91 instruction. The opcode to implement this instruction set should be at least
Correct : C. 7 bit long
28. Dynamic RAMs are best suited to
Correct : A. slow system
29. Intel Pentium CPU is a
Correct : A. risc based
30. A modem is used to link up two computers via
Correct : C. both of the above
31. The maximum integer which can be stored on a 8 bit accumulator is
Correct : C. 255
32. In a system with a 16 bit address bus, what is the maximum number of 1K byte memory devices it could contain
Correct : C. 256
33. Which of the following memories in a computer is volatile?
Correct : A. ram
34. A peripheral is
Correct : C. any physical device connected to the computer
35. How many bits do you think will be adequate to encode individual character in Devnagari script
Correct : D. 10
36. Which of the following bus is used to transfer data from main memory to peripheral device?
Correct : C. data bus
37. To provide increased memory capacity for operating system, the
Correct : A. virtual memory is created
38. CD -RAW is
Correct : B. output device only
39. Which of the following require large computer memory?
Correct : D. all of the above
40. Which major development led to the production of microcomputers?
Correct : D. integrated circuits
41. In immediate addressing the operand is placed
Correct : B. after opcode in the instruction
42. The 16- bit registers in 8085 is
Correct : C. stack pointer and program counter
43. Instruction pipelining has minimum stages
Correct : B. 2
44. Systems that do not have parallel processing capabilities are
Correct : A. sisd
45. The word size of the microprocessor refers to
Correct : B. the amount of a information that can be stored in a cycle
46. How many address lines are needed to address each memory location in a 2048X 4 memory chip?
Correct : B. 11
47. Pipelining strategy is called implement
Correct : B. instruction prefetch
48. The concept of pipelining is most effective in improving performance if the tasks being performed in different stages :
Correct : B. require about the same amount of time
49. Which Algorithm is better choice for pipelining?
Correct : C. merge-sort algorithm
50. The expression 'delayed load' is used in context of
Correct : C. pipelining
51. Parallel processing may occur
Correct : C. both[a] and [b]
52. The cost of a parallel processing is primarily determined by :
Correct : C. circuit complexity
53. An instruction to provide small delay in program
Correct : B. nop
54. Characteristic of RISC (Reduced Instruction Set Computer) instruction set is
Correct : C. one instruction per cycle
55. In daisy-chaining priority method, all the devices that can request an interrupt are connected in
Correct : B. serial
56. Which one of the following is a characteristic of CISC (Complex Instruction Set Computer)
Correct : B. variable format instructions
57. During the execution of the instructions, a copy of the instructions is placed in the ______ .
Correct : D. cache
58. Two processors A and B have clock frequencies of 700 Mhz and 900 Mhz respectively. Suppose A can execute an instruction with an average of 3 steps and B can execute with an average of 5 steps. For the execution of the same instruction which processor is faster ?
Correct : A. a
59. A processor performing fetch or decoding of different instruction during the execution of another instruction is called ______ .
Correct : B. pipe-lining
60. For a given FINITE number of instructions to be executed, which architecture of the processor provides for a faster execution ?
Correct : C. super-scalar
61. The clock rate of the processor can be improved by,
Correct : D. all of the above
62. An optimizing Compiler does,
Correct : B. takes advantage of the type of processor and reduces its process time.
63. The ultimate goal of a compiler is to,
Correct : A. reduce the clock cycles for a programming task.
64. SPEC stands for,
Correct : C. system performance evaluation corporation.
65. As of 2000, the reference system to find the performance of a system is _____ .
Correct : A. ultra sparc 10
66. The average number of steps taken to execute the set of instructions can be made to be less than one by following _______ .
Correct : C. super-scaling
67. If a processor clock is rated as 1250 million cycles per second, then its clock period is ________ .
Correct : D. 8 * 10 ^ -10 sec
68. If the instruction, Add R1,R2,R3 is executed in a system which is pipe-lined, then the value of S is (Where S is term of the Basic performance equation)
Correct : C. ~1
69. CISC stands for,
Correct : C. complex instruction set computer
70. As of 2000, the reference system to find the SPEC rating are built with _____ Processor.
Correct : B. ultra sparc -iii 300mhz
71. The CISC stands for
Correct : D. complex instruction set computer
72. The Sun micro systems processors usually follow _____ architecture.
Correct : D. risc
73. The iconic feature of the RISC machine among the following are
Correct : C. having a branch delay slot
74. Both the CISC and RISC architectures have been developed to reduce the______.
Correct : C. semantic gap
75. Out of the following which is not a CISC machine.
Correct : D. motorola a567
76. Pipe-lining is a unique feature of _______.
Correct : A. risc
77. In CISC architecture most of the complex instructions are stored in _____.
Correct : D. transistors
78. Which of the architecture is power efficient?
Correct : B. risc
79. It is the simultaneous use of multiple
compute resources to solve a computational problem
Correct : A. Parallel computing
80. Parallel Execution
Correct : B. Execution of a program by more than one task, with each task being able to execute the same or different statement at the same moment in time
81. Scalability refers to a parallel system’s (hardware and/or software) ability
Correct : B. To demonstrate a proportionate increase in parallel speedup with the addition of more processors
82. Parallel computing can include
Correct : C. Combination of both A and B
83. Serial Execution
Correct : A. A sequential execution of a program, one statement at a time
84. Shared Memory is
Correct : A. A computer architecture where all processors have direct access to common physical memory
85. Distributed Memory
Correct : B. It refers to network based memory access for physical memory that is not common
86. Parallel Overhead is
Correct : B. The amount of time required to coordi- nate parallel tasks. It includes factors such as: Task start-up time, Synchro- nizations, Data communications.
87. Massively Parallel
Correct : B. The amount of time required to coordinate parallel tasks. It includes factors such as: Task start-up time, Synchronizations, Data communications.
88. Fine-grain Parallelism is
Correct : B. Here relatively small amounts of computational work are done between communication events
89. In shared Memory
Correct : B. Changes in a memory location effected by one processor are visible to all other processors
90. In shared Memory:
Correct : A. Here all processors access, all memory as global address space
91. In shared Memory
Correct : A. Multiple processors can operate independently but share the same memory resources
92. In designing a parallel program, one has to break the problem into discreet chunks of work that can be distributed to multiple tasks. This is known as
Correct : D. Both A and B
93. Latency is
Correct : C. It is the time it takes to send a minimal (0 byte) message from one point to other point
94. Domain Decomposition
Correct : A. Partitioning in that the data associated with a problem is decompose(D) Each parallel task then works on a portion of the dat(A)
95. Functional Decomposition:
Correct : B. Partitioning in that, the focus is on the computation that is to be performed rather than on the data manipulated by the computation. The problem is decomposed according to the work that must be done. Each task then performs a portion of the overall work.
96. Synchronous communications
Correct : A. It require some type of “handshaking” between tasks that are sharing dat(A) This can be explicitly structured in code by the programmer, or it may happen at a lower level unknown to the pro- grammer.
97. Collective communication
Correct : A. It involves data sharing between more than two tasks, which are often specified as being members in a common group, or collective.
98. Point-to-point communication referred to
Correct : B. It involves two tasks with one task acting as the sender/producer of data, and the other acting as the receiver/consumer.*
99. Uniform Memory Access (UMA) referred to
Correct : A. Here all processors have equal access and access times to memory
100. Asynchronous communications
Correct : C. It allows tasks to transfer data independently from one another.