21) The octal number equivalent to the hexadecimal number 5A is
(a) 132
(b) 90
(c) 112
(d) 88
22) The means of storing a large amount of data outside the main memory is
(a) Secondary store
(b) Accumulator
(c) Auxiliary store
(d) Primary store
23) A group of bits or characters ia
(a) Byte
(b) Data
(c) Field
(d) Word
24) The number of characters represented by a 7-bit code is
(a) 56
(b) 64
(c) 128
(d) 256
25) A half bite is known as
(a) Nibble
(b) Data
(c) Bit
(d) Half bite