Among the following options which are the five main components of a communication system:
✓
Message sender receiver medium protocol
B
Message sender receiver network wire
C
Sender receiver protocol signal computer
D
Sender receiver wire signal computer
💡 Explanation: The five main components of a communication system are: Message Sender Receiver Medium and Protocol.
If you are asked to classify computers based on their size which of the following correctly represents this classification:
A
Analog Digital Hybrid
B
General purpose Special purpose
✓
Mainframe mini frame supercomputer microcomputer
D
Core2 Core2 duo Core i3
💡 Explanation: Computers classified by size include Mainframe mini frame supercomputer and microcomputer.
Which computing device belongs to the first generation of computers?
A
IBM 7094
✓
Electronic Numerical Integrator and Calculator (ENIAC)
C
IBM 1401
D
Intel Pentium-I
💡 Explanation: ENIAC (Electronic Numerical Integrator and Calculator) was one of the first electronic general-purpose computers belonging to the first generation.
To uniquely identify a record in a table we need a __________ key.
A
Foreign key
B
Composite key
✓
Primary key
D
Table key
💡 Explanation: A Primary key uniquely identifies each record in a database table.
Select an option of a user interface that is more user-friendly than the other provided options:
A
MS DOS
B
Apple DOS
✓
GUI
D
Linux terminal
💡 Explanation: GUI (Graphical User Interface) is the most user-friendly as it uses icons and visual elements unlike text-based DOS or terminal interfaces.
Which one of the following could be a line of code from Machine Language programming?
A
print("Hello world")
B
cout<<"Hello world"
C
Move 1 A
✓
10101110111101111
💡 Explanation: Machine language uses binary code (0s and 1s). The binary sequence is the only machine language option given.
To use a spreadsheet we use __________ software.
A
MS PowerPoint
B
MS Word
C
MS Access
✓
MS Excel
💡 Explanation: MS Excel is the spreadsheet application used for data analysis calculations and creating spreadsheets.
Among the following which one is NOT a function of an operating system:
A
Booting
B
Memory management
C
I/O management
✓
Text editing
💡 Explanation: Text editing is done by application software not the operating system. OS functions include booting memory and I/O management.
Which of the following options is a branch of Artificial Intelligence (AI)?
A
Programming
✓
Machine learning
C
Deep thinking
D
Microprocessors
💡 Explanation: Machine learning is a branch of AI that enables systems to learn and improve from experience automatically.
To store a person's address in a table which data type should you use?
A
Integer
✓
String
C
Character
D
Floating point
💡 Explanation: A String data type is used to store text data like addresses which contain letters numbers and special characters.
Open System Interconnection (OSI) model is a conceptual model with _______ layers.
A
5
✓
7
C
4
D
6
💡 Explanation: The OSI model has 7 layers: Physical Data Link Network Transport Session Presentation and Application.
Which of the following is NOT a web design tool?
A
WordPress
B
Figma
C
Wix
✓
Oracle
💡 Explanation: Oracle is a database management system not a web design tool. WordPress Figma and Wix are all web design tools.
The average income of one group of 6 persons is Rs. 50000 and the average of another group of 4 persons is Rs. 75000. The total income of:
A
1st group is greater than the 2nd
✓
2nd group is greater than the 1st
C
1st and 2nd groups are same
D
1st group is half of the 2nd group
💡 Explanation: Group 1 total = 6×50000 = 300000. Group 2 total = 4×75000 = 300000. Both groups have equal total income so 2nd group is greater per person but total is same - option C is correct.
Two events with equal chances of happening are called:
A
Simple events
B
Disjoint events
✓
Equally likely events
D
Equal events
💡 Explanation: Equally likely events are those that have the same probability of occurring.
A sentence having one or more unknowns is called:
A
True Sentence
B
False Sentence
✓
Open Sentence
D
Closed Sentence
💡 Explanation: An open sentence contains one or more variables (unknowns) and cannot be determined true or false without knowing the variable.