30 Questions
Question 1
Multiple Choice
What is hexadecimal often referred to as, based on its number of symbols?
Question 2
Multiple Choice
Which set of symbols is used in the hexadecimal numbering system?
Question 3
Multiple Choice
What is a primary use for hexadecimal numbers in computing, as mentioned in the study material?
Question 4
Multiple Choice
What is the smallest unit of data in computing, represented by a 0 or a 1?
Question 5
Multiple Choice
A group of 8 bits is called a:
Question 6
Multiple Choice
Which numbering system uses only the digits 0 and 1 and is referred to as BASE-2?
Question 7
Multiple Choice
What is the numbering system with 10 symbols (0-9) often referred to as BASE-10?
Question 8
Multiple Choice
To convert a binary number to denary, what is the general method?
Question 9
Multiple Choice
Convert the binary number 0011 to denary.
Question 10
Multiple Choice
What is the denary equivalent of the binary number 10101000?
IB Comp Sci Unit 2 Review
Flashcards generated with inquiziti.com. Cut along the dashed lines. Fold in half on the solid line.
What is hexadecimal often referred to as, based on its number of symbols?
BASE-16 numbering
Which set of symbols is used in the hexadecimal numbering system?
0123456789ABCDEF
What is a primary use for hexadecimal numbers in computing, as mentioned in the study material?
Representing very large numbers quickly, such as in colour representation.
What is the smallest unit of data in computing, represented by a 0 or a 1?
Bit
A group of 8 bits is called a:
Byte
Which numbering system uses only the digits 0 and 1 and is referred to as BASE-2?
Binary
What is the numbering system with 10 symbols (0-9) often referred to as BASE-10?
Denary/Decimal
To convert a binary number to denary, what is the general method?
Assign powers of 2 to each binary digit from right to left, then sum the powers where there is a '1'.
Convert the binary number 0011 to denary.
3
What is the denary equivalent of the binary number 10101000?
168
Convert the binary number 01100101 to its denary equivalent.
101
What is the denary value of the binary number 1111?
15
Which method is commonly used to convert a denary number to binary?
Repeatedly divide the denary number by 2, recording the remainders from bottom up.
Convert the denary number 5 to its 4-bit binary equivalent.
0101
What is the 8-bit binary representation of the denary number 95?
01011111
Convert the denary number 12 to its 4-bit binary equivalent.
1100
What is the 8-bit binary representation of the denary number 28?
00011100
How do you convert a hexadecimal number like '5F' to denary?
Convert each hex digit to its 4-bit binary equivalent, combine them, then convert the resulting binary to denary.
Convert the hexadecimal number 5F to denary.
95
What is the denary equivalent of the hexadecimal number A?
10
Convert the hexadecimal number 1A to denary.
26
What is the denary equivalent of the hexadecimal number C?
12
What is a common way to convert a denary number to hexadecimal?
Repeatedly divide the denary number by 16, taking the remainders and converting them to hexadecimal digits from last to first.
Convert the denary number 11 to its hexadecimal equivalent.
B
What is the hexadecimal equivalent of the denary number 255?
FF
How do you convert a binary number to hexadecimal?
Group the binary digits into sets of four (nibbles) from right to left, then convert each nibble to its corresponding hexadecimal digit.
Convert the binary number 01001011 to hexadecimal.
4B
What is the hexadecimal equivalent of the binary number 1100111010011010?
CE9A
What is the method for converting a hexadecimal number to binary?
Convert each hexadecimal digit into its 4-bit binary equivalent.
Convert the hexadecimal number A5 to binary.
10100101