CBSE Class 9 Computer Science Number System MCQs

Question: Set of values used to represent different quantities is called
a) decimal system
b) number system
c) octal system
d) binary system
Answer: b

Question: Computer processes data in terms of ———— numbers
a) decimal
b) hexadecimal
c) binary
d) octal
Answer: c

Question: EBCDIC Stands for—————–
a) extensive binary coded decimal interchange code
b) Extended binary coded decimal interchange code
c) Excessive binary coded decimal interchange code
d) Extended binary coded digital interchange code
Answer: b

Question: House#678 is an example of
a) numeric data
b) Alphanumeric data
c) alphabetic data
(d) special data
Answer: b

Question: The data on which different arithmetic operations can be performed is called
a) numeric data
b) alphanumeric data
(c) text data
d) decimal data
Answer: a

Question: The hexadecimal number 100 is equal to
a) 0001000000
b) 256
c) 400
d) all of above
Answer: c

Question: ASCII Stands for—————–
a) American standard code for information interchange
b) American standard code for inward interchange
c) Amazon standard code for inward interchange
d) Amazon standard code for information interchange
Answer: a

Question: ASCII is ————- bit coding scheme
a) 4
b) 7
c) 8
d) 16
Answer: b

Question: 2‟s complement of 0101010 is
a) 1010110
b) 1010101
c) 0000011
d) none of the options
Answer: a

Question: In ASCII code ———— different characters can be represented
a) 128
b) 256
c) 512
d) 64
Answer: a