1. Control Unit acts as the central nervous system of the computer.
Correct : A. true
2. What does MBR stand for?
Correct : D. memory buffer register
3. In the instruction ADD A, B, the answer gets stored in
Correct : B. a
4. What does PC stand for?
Correct : B. program counter
5. Which of the following holds the last instruction fetched?
Correct : D. ir
6. The portion of the processor which contains the hardware required to fetch the operations is
Correct : A. datapath
7. Causing the CPU to step through a series of micro operations is called
Correct : C. sequencing
8. The functions of execution and sequencing are performed by using
Correct : C. control signals
9. What does D in the D-flip flop stand for?
Correct : C. delay
10. What is the high speed memory between the main memory and the CPU called?
Correct : B. cache memory
11. Cache Memory is implemented using the DRAM chips.
Correct : B. false
12. Whenever the data is found in the cache memory it is called as
Correct : A. hit
13. LRU stands for
Correct : C. least recently used
14. When the data at a location in cache is different from the data located in the main memory, the cache is called
Correct : B. inconsistent
15. Which of the following is not a write policy to avoid Cache Coherence?
Correct : B. write within
16. Which of the following is an efficient method of cache updating?
Correct : A. snoopy writes
17. In mapping, the data can be mapped anywhere in the Cache Memory.
Correct : A. associative
18. The number of sign bits in a 32-bit IEEE format is
Correct : A. 1
19. The transfer between CPU and Cache is
Correct : B. word transfer
20. Computer has a built-in system clock that emits millions of regularly spaced electric pulses per called clock cycles.
Correct : A. second
21. It takes one clock cycle to perform a basic operation.
Correct : A. true
22. The operation that does not involves clock cycles is
Correct : A. installation of a device
23. The number of clock cycles per second is referred as
Correct : A. clock speed
24. CISC stands for
Correct : B. complex instruction set computer
25. Which of the following processor has a fixed length of instructions?
Correct : B. risc
26. Processor which is complex and expensive to produce is
Correct : C. cisc
27. The architecture that uses a tighter coupling between the compiler and the processor is
Correct : A. epic
28. MAR stands for
Correct : A. memory address register
29. A circuitry that processes that responds to and processes the basic instructions that are required to drive a computer system is
Correct : D. processor
30. Any electronic holding place where data can be stored and retrieved later whenever required is
Correct : A. memory
31. Cache memory is the onboard storage.
Correct : A. true
32. Which of the following is the fastest means of memory access for CPU?
Correct : A. registers
33. The memory implemented using the semiconductor chips is
Correct : B. main
34. Size of the memory mainly depends on the size of the address bus.
Correct : A. main
35. Which of the following is independent of the address bus?
Correct : A. secondary memory
36. storage is a system where a robotic arm will connect or disconnect off- line mass storage media according to the computer operating system demands.
Correct : C. tertiary
37. What is the location of the internal registers of CPU?
Correct : B. on-chip
38. If M denotes the number of memory locations and N denotes the word size, then an expression that denotes the storage capacity is
Correct : A. m*n
39. The operation that does not involves clock cycles is
Correct : A. installation of a device
40. The number of clock cycles per second is referred as
Correct : A. clock speed
41. CISC stands for
Correct : B. complex instruction set computer
42. Processor which is complex and expensive to produce
Correct : C. cisc
43. The architecture that uses a tighter coupling between the compiler and the processor.
Correct : A. epic
44. HLDA stands for
Correct : C. hold acknowledgement
45. Word length of a personal computer
Correct : C. 8 bits
46. Winchester disks are a type of
Correct : B. magnetic disks
47. Bernoulli disks are a type of magnetic floppy disks.
Correct : B. false
48. A plug and play storage device that simply plugs in the port of a computer is
Correct : A. flash drive
49. What does USB stand for?
Correct : C. universal serial bus
50. A device similar to a flash drive
Correct : A. memory card
51. What does RAID stand for?
Correct : A. redundant array of independent disks
52. A set of hard disk drives with a controller mounted in a single box, forming a single large storage unit is
Correct : A. disk array
53. The process in which a file is partitioned into smaller parts and different parts are stored in different disks is
Correct : C. stripping
54. Which of the following uses multiple hard disk platters mounted on a single central shift?
Correct : C. disk packs
55. Which of the following is not a magnetic disk?
Correct : D. flash
56. The software substituted for hardware and stored in ROM.
Correct : C. firmware
57. Middleware has enabled the production of various types of smart machines having microprocessor chips with embedded software.
Correct : B. false
58. A “glue” between client and server parts of application.
Correct : A. middleware
59. MOM stands for?
Correct : A. message oriented middleware
60. Storage of firmware is
Correct : D. rom
61. DNS stands for?
Correct : A. domain name system
62. A software that lies between the OS and the applications running on it.
Correct : B. middleware
63. A type of middleware that allows for between the built-in applications and the real- time OS?
Correct : D. embedded middleware
64. What is the other name for object middleware?
Correct : C. object request broker
65. The calls certain procedures on remote systems and is used to perform synchronous or asynchronous interactions between systems.
Correct : B. rpc
66. Which module gives control of the CPU to the process selected by the short-term scheduler?
Correct : A. dispatcher
67. In priority scheduling algorithm
Correct : A. cpu is allocated to the process with highest priority
68. The interval from the time of submission of a process to the time of completion is termed as
Correct : B. turnaround time
69. Which scheduling algorithm allocates the CPU first to the process that requests the CPU first?
Correct : A. first-come, first-served scheduling
70. Which algorithm is defined in Time quantum?
Correct : B. round robin scheduling algorithm
71. Process are classified into different groups in
Correct : D. multilevel queue scheduling algorithm
72. Which one of the following can not be scheduled by the kernel?
Correct : B. user level thread
73. CPU scheduling is the basis of
Correct : B. multiprogramming operating systems
74. With multiprogramming is used productively.
Correct : A. time
75. What are the two steps of a process execution?
Correct : B. cpu & i/o burst
76. An I/O bound program will typically have
Correct : C. many very short cpu bursts
77. A process is selected from the queue by the scheduler, to be executed.
Correct : C. ready, short term
78. In the following cases non – preemptive scheduling occurs?
Correct : B. when a process goes from the running state to the waiting state
79. The switching of the CPU from one process or thread to another is called
Correct : D. all of the mentioned
80. What is Dispatch latency?
Correct : C. the time to stop one process and start running another one
81. Scheduling is done so as to
Correct : A. increase cpu utilization
82. Scheduling is done so as to
Correct : A. increase the throughput
83. What is Turnaround time?
Correct : D. the total time from the completion till the submission of a process
84. Scheduling is done so as to
Correct : B. decrease the turnaround time
85. What is Waiting time?
Correct : B. the total time spent in the ready queue
86. Scheduling is done so as to
Correct : C. decrease the waiting time
87. What is Response time?
Correct : B. the total time taken from the submission time till the first response is produced
88. Round robin scheduling falls under the category of
Correct : B. preemptive scheduling
89. With round robin scheduling algorithm in a time shared system
Correct : A. using very large time slices converts it into first come first served scheduling algorithm
90. The portion of the process scheduler in an operating system that dispatches processes is concerned with
Correct : A. assigning ready processes to cpu
91. Complex scheduling algorithms
Correct : A. are very appropriate for very large computers
92. What is FIFO algorithm?
Correct : B. first executes the job that came in first in the queue
93. The strategy of making processes that are logically runnable to be temporarily suspended is called
Correct : B. preemptive scheduling
94. What is Scheduling?
Correct : A. allowing a job to use the processor
95. There are 10 different processes running on a workstation. Idle processes are waiting for an input event in the input queue. Busy processes are scheduled with the Round- Robin time sharing method. Which out of the following quantum times is the best value for small response times, if the processes have a short runtime, e.g. less than 10ms?
Correct : A. tq = 15ms
96. Orders are processed in the sequence they arrive if rule sequences the jobs.
Correct : C. first come, first served
97. Which of the following algorithms tends to minimize the process flow time?
Correct : B. shortest job first
98. Under multiprogramming, turnaround time for short jobs is usually and that for long jobs is slightly
Correct : B. shortened; lengthened
99. Which is the most optimal scheduling algorithm?
Correct : B. sjf – shortest job first
100. The real difficulty with SJF in short term scheduling is
Correct : B. knowing the length of the next cpu request