ICTCampus

Free · Sinhala & English

A/L ICT unit tests — a free MCQ test for every unit

130 Paper I-style questions: 10 for each of the 13 examined units, 12 minutes each, marked the moment you finish.

Find the units costing you marks.

Sign in with your phone number — one SMS code, no password — and take as many as you like. Your best score on each unit is kept.

Start a free test

Try one now

Unit 3 · Converting binary fractions to decimal

What is the decimal value of 10110.101₂?

10110.101₂ හි දශම අගය කුමක්ද?

  1. (1)21.625
  2. (2)22.5
  3. (3)22.625
  4. (4)22.875
  5. (5)44.625
Show the answer

Answer: (3)

10110 = 16 + 4 + 2 = 22, and .101 = 0.5 + 0.125 = 0.625, so the value is 22.625.

10110 = 16 + 4 + 2 = 22; .101 = 0.5 + 0.125 = 0.625. එබැවින් අගය 22.625 වේ.

Grade 12

1. Concept of ICT — unit test

තොරතුරු හා සන්නිවේදන තාක්ෂණයේ සංකල්පය

What it asks

  • Data and information
  • Qualities of valuable information
  • Cloud computing service models
  • The IPO model
  • Open-source software
  • Data-gathering tools
  • Validation checks
  • Batch and real-time processing
  • ICT in healthcare
  • Legal and ethical issues of ICT
Take the Unit 1 test

2. Introduction to computer — unit test

පරිගණකය හැඳින්වීම

What it asks

  • Generations of computers
  • Classifying computers
  • Direct-entry input
  • Printers
  • Storage media
  • System buses
  • Address bus and memory size
  • Tracing the fetch-execute cycle
  • Memory hierarchy
  • RAM and ROM types
Take the Unit 2 test

3. Data representation — unit test

දත්ත නිරූපණය

What it asks

  • Converting binary fractions to decimal
  • Hexadecimal, octal and binary conversion
  • Two's complement
  • Signed number representations
  • ASCII codes
  • Character codes: BCD, ASCII, EBCDIC, Unicode
  • Unicode encodings and storage size
  • Subtraction by two's complement
  • Overflow
  • Bitwise operations and masks
Take the Unit 3 test

4. Fundamentals of digital circuits — unit test

සංඛ්‍යාංක පරිපථවල මූලිකාංග

What it asks

  • Logic gates and truth tables
  • Reading a logic circuit
  • Universal gates
  • De Morgan's laws
  • Boolean laws
  • Minterms and 3-variable K-maps
  • 4-variable K-maps: corners and wrap
  • Designing a circuit from a description
  • Half and full adders
  • Flip-flops and SR latches
Take the Unit 4 test

5. Computer operating system — unit test

පරිගණක මෙහෙයුම් පද්ධතිය

What it asks

  • Classifying operating systems
  • Main functions of an OS
  • Storage allocation methods
  • Reading a FAT
  • Process state transitions
  • Round robin scheduling
  • Process schedulers
  • Process control block (PCB)
  • Paging: virtual to physical address
  • Spooling
Take the Unit 5 test

6. Data communication and networking — unit test

High-yield

දත්ත සන්නිවේදනය හා පරිගණක ජාලකරණය

What it asks

  • Signal properties: wavelength
  • Choosing a transmission medium
  • Parity bit error detection
  • All-to-all connections
  • Subnetting: broadcast address
  • NAT and private addresses
  • Port numbers and multiplexing
  • The domain name system (DNS)
  • Network devices and OSI layers
  • Digital signatures and keys
Take the Unit 6 test

Grade 13

7. System analysis and design — unit test

High-yield

පද්ධති විශ්ලේෂණය හා සැලසුම

What it asks

  • System characteristics: feedback
  • Information system types: DSS
  • SDLC models: agile
  • Economic feasibility: payback period
  • Functional and non-functional requirements
  • DFD rules
  • Physical design: data dictionary
  • Testing: black-box and boundary data
  • Changeover methods: phased
  • Packaged systems: gap analysis
Take the Unit 7 test

8. Database management — unit test

High-yield

දත්ත සමුදාය කළමනාකරණය

What it asks

  • Structured and unstructured data
  • Degree and cardinality
  • Foreign keys and referential integrity
  • SQL: WHERE, GROUP BY and HAVING
  • SQL: inner join
  • ER diagrams: attribute types
  • EER: specialisation
  • Candidate, primary and alternate keys
  • Mapping an ER diagram to tables
  • Normalisation: transitive dependency
Take the Unit 8 test

9. Programming — unit test

High-yield

ක්‍රමලේඛනය

What it asks

  • Top-down design and stepwise refinement
  • Pseudocode: REPEAT … UNTIL loops
  • Programming paradigms
  • Program translators: the hybrid approach
  • Operators and precedence
  • Loops with break and continue
  • Functions: local and global scope
  • Lists, tuples, dictionaries and slicing
  • File handling: write, append and read
  • Bubble sort, pass by pass
Take the Unit 9 test

10. Web development — unit test

High-yield

වෙබ් සංවර්ධනය

What it asks

  • Static and dynamic websites
  • Navigation structures
  • HTML page structure
  • Hyperlinks: bookmarks
  • Tables: rowspan and colspan
  • CSS: the cascade and selectors
  • Web authoring tools (WYSIWYG)
  • HTML forms: radio buttons
  • PHP: arrays, foreach and joining strings
  • Website performance
Take the Unit 10 test

11. Internet of Things — unit test

වස්තූන්ගේ අන්තර්ජාලය (Internet of Things)

What it asks

  • Microcontroller and microprocessor
  • Arduino Uno board features
  • Reading an Arduino sketch
  • Analog reading to temperature (LM35)
  • Sensors and actuators
  • Definition of IoT
  • IoT architecture layers
  • Remote switch: the relay
  • IoT application: order of events
  • IoT security concerns
Take the Unit 11 test

12. ICT in business — unit test

ව්‍යාපාරවල තොරතුරු හා සන්නිවේදන තාක්ෂණය (ICT in business)

What it asks

  • Pure-brick, brick-and-click, pure-click
  • Reverse auction
  • ICT in business functions
  • E-commerce and e-business
  • Transaction types
  • Online payment security
  • E-commerce for and against
  • Mobile marketing
  • Customer databases and competitive advantage
  • Web advertising
Take the Unit 12 test

13. New trends and future directions of ICT — unit test

ICT හි නව ප්‍රවණතා සහ අනාගත දිශානතීන්

What it asks

  • Emotional computing
  • Types of machine learning
  • Man-machine and M2M coexistence
  • Expert systems
  • Characteristics of agents
  • Utility function
  • Multi-agent systems
  • Quantum computing: qubits
  • Nature-inspired computing: genetic algorithms
  • Beyond the von Neumann model
Take the Unit 13 test

Missed a topic? It is in the notes.

The Complete Short Notes cover every topic these tests ask, lesson by lesson, in Sinhala and English, with a mind map for every unit — certified and signed by Dr. Yasas.

See the Complete Short Notes

Questions students ask

Are the A/L ICT unit tests really free?

Yes. Every unit's test is free, as often as you like. You sign in with your phone number so your best score is kept and the result can tell you which topics to go back to; there is nothing to pay.

What are the questions like?

Paper I style: a stem, five options, one correct answer, no negative marking. Ten questions per unit, chosen so every lesson of the unit is asked, with a 12-minute clock — about the pace of the real paper.

Are the tests in Sinhala or English?

Both. Every question, option and explanation is written in Sinhala and English, and you can switch language at any point during the test.

What happens after the test?

You see your score, the right answer and the reason for every question, and the topics you missed. Each of those topics is covered in the Complete Short Notes for that unit.

More free A/L ICT resources

Finished your A/Ls? Campus ReadyA 12-week course in data, Python and research skills for the wait before university. Paid, with two intakes a year.