Computer and Information Technology (Physics) Part-III

Total Questions: 50

21. Which of the following is a self complimenting code? [U.P. Lower Sub. (Mains) 2013]

Correct Answer: (b) 5211 code
Solution:

If a code is constructed in such a way that when we replace 1 by 0 and 0 by 1 in the 4-bit code representation of a digit, it is called a self-complementing code. For example, the (2421) and the (5211) codes are self- complementing.

A necessary condition for a self-complementing weighted code is that the sum of its weights be 9. Digit 8421 and 5421 codes are not self complimenting codes whereas 5211, 2421, 3321, 4311 are self complimenting.

22. The binary addition 1+1 will result in- [Uttarakhand Lower Sub. (Pre) 2010]

Correct Answer: (b) 0 with carry 1
Solution:

The binary addition of 1+1 is 0 and carry 1. Similarly the Binary addition of 0+0 results 0.

23. The memory of a computer is commonly expressed in terms of kilobytes or megabytes. A byte is made up of- [I.A.S. (Pre) 2000]

Correct Answer: (a) Eight binary digits
Solution:

The computer memory is expressed in kilobytes or megabytes or gigabytes. 1 byte equals to 8 binary digits (bits).

1 kilobyte = 1024 byte

1 megabyte = 1024 kilobyte

1 gigabyte = 1024 megabyte

1 terabyte = 1024 gigabyte

24. A collection of 8 bit is called: [Uttarakhand P.C.S. (Mains) 2002]

Correct Answer: (b) Byte
Solution:

The computer memory is expressed in kilobytes or megabytes or gigabytes. 1 byte equals to 8 binary digits (bits).

1 kilobyte = 1024 byte

1 megabyte = 1024 kilobyte

1 gigabyte = 1024 megabyte

1 terabyte = 1024 gigabyte

25. One byte equals to how many bits? [U.P.P.C.S. (Mains) 2006]

Correct Answer: (a) 8
Solution:

The computer memory is expressed in kilobytes or megabytes or gigabytes. 1 byte equals to 8 binary digits (bits).

1 kilobyte = 1024 byte

1 megabyte = 1024 kilobyte

1 gigabyte = 1024 megabyte

1 terabyte = 1024 gigabyte

26. One byte has- [M.P.P.C.S. (Pre) 2014]

Correct Answer: (a) 8-bits
Solution:

The computer memory is expressed in kilobytes or megabytes or gigabytes. 1 byte equals to 8 binary digits (bits).

1 kilobyte = 1024 byte

1 megabyte = 1024 kilobyte

1 gigabyte = 1024 megabyte

1 terabyte = 1024 gigabyte

27. How many bits are there in one byte? [M.P.P.C.S. (Pre) 2015]

Correct Answer: (b) 8
Solution:

The computer memory is expressed in kilobytes or megabytes or gigabytes. 1 byte equals to 8 binary digits (bits).

1 kilobyte = 1024 byte

1 megabyte = 1024 kilobyte

1 gigabyte = 1024 megabyte

1 terabyte = 1024 gigabyte

28. How many bits are there in a kilobyte? [Jharkhand P.C.S. (Pre) 2016]

Correct Answer: (d) 8192
Solution:

A byte contains 8 bit and 1 kilobyte (kb) contains 1024 bytes.

Like this-

1 Kilobyte = 1024 × 8 Bits = 8192 Bits.

Geopbyte containing 1024 Brontobytes is the largest storage unit.

29. The term bit is the short form of [U.P. Lower Sub. (Mains) 2013]

Correct Answer: (c) Binary Digit
Solution:

A bit (short for binary digit) is the smallest unit of data in a computer. A bit has a single binary value, either 0 or 1.

30. The length of a word in computers is measured by- [U.P.U.D.A./L.D.A. (Mains) 2010]

Correct Answer: (a) Bits
Solution:

The length of a word in computers is measured in bits.

8 Bits = 1 Byte

1024 Byte = 1 Kilobyte

1024 kilobyte = 1 Megabyte