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. The time that elapses between the initiation of an operation and completion of
that operation is called.....
Correct : C. memory access time
12. Interrupts which are initiated by an instruction are ............
Correct : B. external
13. A semiconductor memory constructed using bipolar transistors or MOS transistor stores information in the form of a ......................
Correct : A. Flip-flop voltage levels
14. A simple way of performing I/O tasks is to use a method known
as ......................
Correct : A. program-controlled I/O
15. Memory access in RISC architecture is limited to instructions ........
Correct : C. STA and LDA
16. Striking key stores the corresponding character code in a 8-bit buffer register associated with the keyboard. This register is called as ........................
Correct : C. DATAIN
17. When the character is transferred to the processor, status control flag SIN is automatically cleared to ............................
Correct : A. zero
18. A microprogram written as string of 0's and 1's is a ...
Correct : D. binary microprogram
19. An exception conditions in a computer system by an event external to the CPU
is called .........
Correct : A. Interrupt
20. When the CPU detects an interrupt, it then saves its ...................
Correct : C. Current state
21. An exception condition in a computer system caused by an event external to the CPU is called ........
Correct : A. Interrupt
22. When the CPU detects an interrupt, it then saves its .............
Correct : C. Current State
23. A microprogram is sequencer perform the operation...
Correct : D. read and execute
24. A computer program that converts an entire program into machine language at one time is called
Correct : C. compiler
25. The unit which decodes and translates each instruction and generates the necessary enable signals for ALU and other units is called ..
Correct : C. control unit
26. State whether the following statement is True or False for cache memory.
i) Cache memories are high-speed buffers which are inserted between the processors and main memory.
ii) They can also be inserted between main memory and mass storage.
iii) It can be used as secondary memory.
Correct : C. i-True, ii-True, iii-False
27. The channel which handles the multiple requests and multiplexes the data transfers from these devices a byte at a time is known as .....
Correct : A. multiplexor channel
28. The address mapping is done, when the program is initially loaded is called ......
Correct : C. static relocation
29. State whether the following statement is True or False for PCI bus.
i) The PCI bus tuns at 33 MHZ and can transfer 32-bits of data(four bytes) every clock tick.
ii) The PCI interface chip may support the video adapter, the EIDE disk controller chip and may be two external adapter cards.
iii) PCI bus deliver the different throughout only on a 32-bit interface that other parts of the machine deliver through a 64-bit path.
Correct : C. i-True, ii-True, iii-False
30. The I/O processor has a direct access to ....................... and contains a number
of independent data channels.
Correct : A. main memory
31. The computer code for the interchange of information between terminal is ..
Correct : A. ASCII
32. SIMD stands for ....
Correct : A. Single Instruction Stream Over Multiple Data Streams
33. The NOR gate is complement of ..
Correct : B. OR gate
34. A .............. is a digital circuit that performs the inverse operation of decodes.
Correct : D. encoder
35. Pipelining increases the CPU instruction ..........
Correct : C. throughput
36. The ............... is a program whose function is to start the computer software
operating when power is turned on.
Correct : A. Bootstrap loader
37. .................. is concerned with the way the hardware components operate to
form computer system.
Correct : A. Computer organization
38. Devices that are used primarily to transport data between the processor and
the user are known as ....
Correct : C. Data presentation device
39. Which statement is valid about computer program?
Correct : D. All of the above
40. Access time is
Correct : A. Time to position the head over proper track
41. Memory unit that communicates directly with the CPU is called the ...........
Correct : A. Main memory
42. CISC stands for ................
Correct : C. Complex Instruction Set Computers
43. The communication between central system and the outside environment is done by
Correct : A. Input-output subsystem
44. The register that keeps track of the instructions in the program stored in memory is ..
Correct : B. Program counter
45. ................ is a small very speed register file maintained by the instruction fetch segment of the pipeline.
Correct : B. Loop buffer
46. In case of only one memory operand, when a second operand is needed, as in the case of an Add instruction, we use processor register called .........
Correct : D. source
47. Data transfer between the main memory and the CPU register takes place
through two registers namely .......
Correct : C. MAR and MDR
48. The pipeline operates on a stream of instruction by overlapping the phases of instruction cycle is ........
Correct : B. Instruction pipeline
49. The instruction that cause transfer of data from one location to another without changing the binary information content are ...
Correct : A. Data transfer instruction
50. The branch logic that provides decision making capabilities in the control unit is known as ..