Completed
Number Systems
Questions From This Challenge
Q1mcq1 mark
The binary number system uses which set of digits?
0 and 1 ✓
0 to 7
0 to 9
0 to 9 and A to F
Q2mcq1 mark
The hexadecimal number system uses a base of:
16 ✓
8
10
2
Q3mcq1 mark
What is the decimal equivalent of the binary number 1011?
11 ✓
13
9
10
Q4mcq1 mark
What is the binary equivalent of the decimal number 10?
1010 ✓
1001
1100
0110
Q5mcq1 mark
What is the octal equivalent of the decimal number 8?
10 ✓
8
12
08
Q6mcq1 mark
What is the decimal equivalent of the hexadecimal number 1A?
26 ✓
16
30
20
Q7mcq1 mark
In hexadecimal, which single digit represents the decimal value 12?
C ✓
12
A
D
Q8mcq1 mark
Which of these is the correct octal representation of decimal 9?
11 ✓
9
10
19
Q9mcq1 mark
Converting a binary number to its decimal equivalent involves:
Multiplying each bit by the corresponding power of 2 based on its position and summing the results ✓
Multiplying each bit by 10 and adding 1
Simply reading the binary digits as if they were decimal digits
Dividing the binary number by 8 repeatedly
Q10mcq1 mark
ASCII is a character encoding scheme that primarily represents:
English alphabets, digits, and common symbols using 7 or 8 bits per character ✓
Only mathematical symbols using 16 bits
All the world's writing systems using a single fixed-width encoding
Only Indian language scripts
Q11mcq1 mark
Unicode was introduced mainly to overcome which limitation of ASCII?
ASCII cannot represent characters from most of the world's languages/scripts ✓
ASCII uses too many bits per character
ASCII cannot represent numbers
ASCII is not compatible with any computer hardware
Q12mcq1 mark
UTF-8 is a Unicode encoding scheme notable for being:
A variable-width encoding that uses 1 to 4 bytes per character and stays backward-compatible with ASCII for the first 128 characters ✓
A fixed 2-byte encoding for every character
Used only for encoding numbers, not text
Identical to ASCII with no extensions
Q13mcq1 mark
ISCII is a character encoding scheme specifically designed to represent:
Indian language scripts ✓
European language scripts
Only English text
Binary machine instructions
Q14mcq1 mark
What is the binary equivalent of the decimal number 255?
11111111 ✓
11111110
10000001
11110000
Q15mcq1 mark
Compared to UTF-8, UTF-32 encodes every character using:
A fixed 4 bytes per character regardless of the character ✓
A variable number of bytes from 1 to 4
Exactly 1 byte per character always
No bytes; it stores characters as decimal numbers only