Unit 1 MCQ

1)    A ------------- System defines a set of values used to represent quantity.

a)Number     b)Digital

c)analog

          Ans :- a)

2)    Microprocessor   is  the -------------- of computer

a)hand    b)heart

c)Brain  d)leg

Ans:- c)

3)System Bus conatains-------

a)Address bus     b)Data bus

c)Control bus   d)All

Ans:- d)

4)Which is the first world’s Microprocessor

     a)Intel 4004    b)Motorola 68020

c)Intel 8008  d)None

Ans:- a)

5)Calculator are based on --------Microprocessor

a)4bit    b)16bit

c)32bit  d)64bit

Ans:-a)

6)Pentium can address -------- of memory

a)4 GB     b)128GB 

c)256GB   d)542GB

Ans:-a)

7)A nibble is a combination of-----bits

a)one    b)four

c)eight

Ans:-b)

8)word consist of-------bytes

a)2    b)4

c)5    d)8

Ans:-a)

9)The base used for octal number system is------

a)8    b)2

c)16  d)9

Ans:-a)

10)(13)10= (?)2

a)1101      b)1110

c)1100

Ans:-a)

11)Binary 1011.01=__________decimal

a)12.15    b)25.11

c)11.25    d)None

Ans: -c)

12)The 80386DX is a processor that supports______

a)8 bit data       b)16 bit data

c)32 bit data    d)all of above

Ans: -d)

13)The 80386DX has an address bus of_____

a)8 address line    b)16 address line

c)32 address line   d)64 address line

Ans;c)

     14)Access time is faster for_____

     a)ROM    b)SRAM

     c)DRAM  d)None

Ans:-b)

15)For the static RAM the maximum access time is about____

a)1ns       b)10ns

c)300ns   d)None

Ans:-b)

16)convert (2048)10 =( ?)6

a)13252        b)12252

c)13225        d)none

Ans:-a)

17)convert (10110)2 =(?)H

a)14   b)15

c)16   d)none

Ans:-c)

18)The memory management of 80386 supports

a)virtual memory     b)paging

c)four level of protection  d)all of above

Ans:-d)

19)The number of debug registers  that are available in 80386 , for hardware debugging and control is________

a)2      b)4

c)8      d)16

Ans:-c)

20)Operating Frequency of 80386DX is______

a)12 MHz and 20 MHz       b)20MHz   and  33 MHz

c)32 MHz and 12 MHz       d)all of above

Ans:-b)

21)Segmentation Unit allows segments of ________size at maximum

a)4Gbytes       b)6Mbytes

c)4Mbytes      d)6Gbytes

Ans:-a)

22) A new signal group on the 80486 Is the_______

a)PARITY     b)DP0-DP3

c)PCHK         d)all

Ans:-d)

23)Access time is faster for

a)ROM    b)SRAM

c)DRAM  d)none

Ans:-b)

24)In ADC 0808 if _______pin high enables output

a)EOC    b)I/P0-I/P7

c)SOC  d)OE

Ans:- d)

25)For the static RAM the write pulse width should be at least______

a)10ns    b)60ns

c)300ns   d)none

Ans:-b)

26)For the most Static RAM the maximum access time is about_____

a)1ns      b)10ns

c)100ns  d)none

Ans:-c)

27)which of the unit is not the part of the internal architecture of 80386?

a)Central Processing Unit    b)Memory Management Unit

c)Bus Interface Unit             d)None

Ans:-d)

28)80386 support which type of descriptor table from the following?

a)TDS     b)ADS

c)GDS   d)MDS

Ans:-c)

29)The Unit that increases the speed of all shift and rotate operation is______

a)Memory management unit   b)execution unit

c)instruction unit                     d)barrel Shifter

Ans:-d)

30)The memory management unit consists of______

a)segmentation unit   b)paging unit

c)segmentation & paging unit   d)none

Ans:-c)

31)Segmentation Unit allows____

a)maximum size of 4 GB segments

b)use of segment address components

c)use of offset address components

Ans:-d)

32)The unit that organizes the physical memory,in  terms of pages of 4 KB size each is_____

a)segmentation unit      b)execution unit

c)paging unit               d)instruction unit

Ans:-c)

33)Paging unit works under the control of _____

a)memory management unit   b)segmentation unit

c)execution unit          d)instruction unit

Ans:-b)

34)The signal which indicates to the CPU ,to fetch a data word for the coprocessor is_____

a)READY     B)NMI

C)HLDA     D)PEREQ

Ans:-d)



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