Lesson 1.2.4
1.2.4 Data storage Quiz: OCR Computer Science, Unit 2
20 questions
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Lesson 1.2.4, Data storage: 20 multiple choice questions for the OCR GCSE Computer Science (J277), Unit 2: Memory and storage, written with Revision Ninja.
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The 20 questions
-
What is the highest denary value an 8-bit binary number can represent?
- 128
- 256
- 127
- 255
-
What is the denary value of binary 00000101?
- 5
- 10
- 4
- 6
-
What is hexadecimal FF in denary?
- 240
- 15
- 16
- 255
-
What denary value does the hexadecimal digit B represent?
- 10
- 11
- 13
- 12
-
Which bit has the largest place value in an 8-bit binary number?
- Eighth bit
- Leftmost bit
- Rightmost bit
- Middle bit
-
What is the mathematical effect of shifting a binary number one place left?
- Multiply by 2
- Add 2
- Square it
- Divide by 2
-
What is 00000101 + 00000011 in binary?
- 00001000
- 00000110
- 00010000
- 00001110
-
What occurs when 11111111 plus 00000001 is calculated within 8 bits?
- Logic error
- Overflow error
- Underflow error
- Syntax error
-
What is 00000011 shifted one place to the left?
- 00001100
- 00000001
- 11000000
- 00000110
-
What is 00001000 shifted two places to the right?
- 00100000
- 00000100
- 00000010
- 00001010
-
What is denary 200 written in 8-bit binary?
- 11001000
- 10101000
- 11010000
- 11001100
-
What is hexadecimal 3F in denary?
- 48
- 63
- 51
- 75
-
What is denary 45 in hexadecimal?
- 2D
- D2
- 3D
- 2E
-
Which 8-bit binary number is the same as the 4-bit binary number 1010?
- 11111010
- 00001010
- 00010100
- 10100000
-
In ASCII, the code for 'A' is 65 and each following letter is one higher. What is the denary code for 'C'?
- 97
- 68
- 66
- 67
-
How many different characters can an 8-bit character set represent?
- 512
- 256
- 255
- 128
-
Will 60 and 75 overflow when added together in 8-bit binary?
- Sometimes
- Only if signed
- Yes
- No
-
Which 8-bit binary number represents denary 26?
- 00110101
- 11010111
- 00011010
- 11010000
-
Binary 00110010 is shifted three places to the right. What is the result?
- 01100100
- 00110010
- 00000011
- 00000110
-
What is the denary value of hexadecimal AA?
- 186
- 160
- 165
- 170
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