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WorksheetsNumber system
Total questions: 30
Worksheet time: 19mins
Which number system uses only the digits 0 and 1?
Decimal
Octal
Binary
Hexadecimal
The base (radix) of the octal number system is:
2
8
10
16
Which of the following is a valid hexadecimal digit?
9
G
H
8GH
What is the decimal equivalent of the binary number 1011?
9
10
11
12
What is the binary equivalent of the decimal number 13?
1100
1101
1110
1011
In binary addition, what is the sum of 1 + 1?
1
0
10
11
The process of collecting information from users to understand their needs is called:
Coding
Testing
Maintenance
Information gathering
Feasibility analysis mainly checks whether a project is:
Easy to code
Error-free
Well documented
Profitable and practical
A Data Flow Diagram (DFD) is used to represent:
Program logic
Data movement in a system
Database structure
Hardware layout
Input/output design focuses on:
Data storage
User interaction with the system
Software testing
Program debugging
The Software Development Life Cycle (SDLC) includes all EXCEPT:
Planning
Analysis
Design
Hacking
Which of the following is a valid octal number?
457
789
128
19
What is the hexadecimal equivalent of the decimal number 15?
E
F
D
10D
What is the decimal equivalent of the binary number 11001?
23
24
25
26
Which number system uses the digits 0–7?
Binary
Octal
Decimal
Hexadecimal
What is the binary equivalent of the octal number 7?
101
110
111
100
What is the result of binary addition: 101 + 11 = ?
1001
1000
1100
1110
How many hexadecimal digits are there?
10
16
15
AF
One octal digit is equivalent to three binary bits.
true
false
Both A and B
Cannot be determined
Hexadecimal number system is more compact than binary for representing large values.
True
False
Depends on the value
None of these
Binary division always produces an exact result without remainder.
True
False
None of the above
Only for odd numbers/even
The hexadecimal number system uses symbols A–F to represent values 10–15.
True
False
Only A–E
Only A–G
The first phase of the Software Development Life Cycle (SDLC) is:
Design
Planning
Coding
Testing
Information gathering is done mainly to:
Understand user requirements
Write program code
Design hardware
Test software
convert binary 101 to decimal
4
8
5
6
write decimal 14 as binary number
1100
1010
1110
1111
1010 + 0101 = binary addition?
10101
1010
1101
1111
1011 + 1011 = Bianry addition?
2022
10110
1110
1010
101 X 100 = Binary multiplication?
10100
10110
101100
101
DBMS stands for:
Data Backup Management System
Database Management System
Digital Base Management Software
Data Business Management System
