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ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test MCQs With Answers
Question # 1
Data is represented on a computer by means of a two-state on/off system called
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the octal system
the binary system
a word
ROM
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Question # 2
Number 375
10
is equivalent in binary system to.
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101110101
100110101
101110111
101110011
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Question # 3
The digits used for hexadecimal number system are.
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A through Z
1 through 16
0 through 15
0 through 9 and A through F
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Question # 4
What is the octal equivalent of the binary system :10111101.?
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675
8
275
8
572
8
573
8
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Question # 5
Base 8 is often used in computing because.
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there are 8 bit in a byte
calculations become easier by using base 8
electronic circuits can be made econmically
it can represent long strings of binary 1's an 0's in a more compact form
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Question # 6
The number 10000 would appear just immediately after.
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FFFF (hex)
1111 (binary)
7777 (octal)
all of the above
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Question # 7
The number ABC in Hexadecimal system is equivalent to which number in decimal system.
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A x 100 + B x 10 + C x 1
10 x 100 + 11 x 10 + 12
10 x 16 + 11 x 16 + 12
10 x 256 + 11 x 16 + 12
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Question # 8
A letter, number, or a special character is represented by a.
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bit
kilobyte
byte
megabyte
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Question # 9
The hexadecimal number system is widely used in analyzing and programming in.
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analog computers
binary computers
decimal computers
micro computers
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Question # 10
Four-digit binary number 1011 is represented in the decimal system by.
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7
9
11
13
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