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- 1. Multiple Choice
Convert decimal 47 to 8-bit binary
100100
2F
101111
00101111
- 2. Multiple Choice
A hexadecimal digit
Represents 2 binary digits
Represents 4 binary digits
Represents 6 binary digits
Represents 8 binary digits
- 3. Multiple Choice
In a hospital emergency room, patient records are accessed as the need arises.
Serial access is ideal
Serial and direct access are equally suitable
Direct access is ideal
None of the above are true
- 4. Multiple Choice
Most systems implement relational databases rather than flat files because
Relational databases involve less data redundancy
Relational databases make it easier to implement security measures
Relational databases are simpler to update
All of the above are true
- 5. Multiple Choice
When A = 0, B = 1 and C = 1
D = 0 and E = 0
D = 0 and E = 1
D = 1 and E = 0
D = 1 and E = 1
- 6. Multiple Choice
Which of the following is true about raster images?
They have a specific number of pixels
They are images composed of paths
They do not get blurry when enlarged
None of the above is true
- 7. Multiple Choice
We generally prefer 24-bit to 16-bit colour representation because
a 24-bit image has a higher resolution
24-bit representation can display many more colours
A 24-bit image has less colour depth
A 24-bit image takes up less storage space
- 8. Multiple Choice
This is a part-algorithm for a password-protected app. Which variable determines how many tries the user is given?
c
guess
password
none of the above
- 9. Multiple Choice
How many decisions are there in this flowchart?
1
2
3
4
- 10. Multiple Choice
If the user doesn't guess the password, what will be the end-condition for this loop?
guess = 3
guess = password
password = Year 9
c = 0
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