100+ Free Sri Lanka ICT Service Exam Practice Questions

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Sample Sri Lanka ICT Service Exam Practice Questions

Try these sample questions to test your Sri Lanka ICT Service Exam exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a computer system, which component temporarily holds data and instructions that the CPU is actively using?

A.Hard disk drive

B.Random Access Memory (RAM)

C.Read Only Memory (ROM)

D.Cache on the optical drive

Explanation: RAM is volatile primary memory that holds the data and instructions currently in use by the CPU, providing fast read/write access while the program runs.

2How many bytes are there in one kibibyte (KiB) as defined by the IEC binary standard?

A.1000 bytes

B.1024 bytes

C.8 bytes

D.1048576 bytes

Explanation: Under the IEC binary prefix standard, 1 kibibyte (KiB) equals 2^10 = 1024 bytes. The decimal kilobyte (kB) equals 1000 bytes.

3What is the decimal value of the binary number 1011?

A.9

B.11

C.13

D.15

Explanation: 1011 in binary equals (1x8) + (0x4) + (1x2) + (1x1) = 8 + 0 + 2 + 1 = 11 in decimal.

4Which logic gate outputs 1 (true) only when both of its inputs are 1?

A.OR gate

B.AND gate

C.NOT gate

D.XOR gate

Explanation: An AND gate outputs 1 only when all of its inputs are 1; with any input at 0 the output is 0.

5Which of the following is an example of system software rather than application software?

A.A spreadsheet program

B.A web browser

C.A device driver

D.A photo editor

Explanation: A device driver is system software that lets the operating system communicate with hardware. The other options are application software that users run to perform specific tasks.

6Which type of storage offers the fastest access speed but the smallest capacity in the memory hierarchy?

A.CPU registers

B.Main memory (RAM)

C.Solid-state drive

D.Magnetic tape

Explanation: CPU registers sit at the top of the memory hierarchy, offering the fastest access but the smallest capacity, holding only the data the CPU is operating on immediately.

7Which character encoding standard uses a single byte to represent 128 characters including English letters, digits, and control characters?

A.Unicode UTF-16

B.ASCII

C.EBCDIC

D.Base64

Explanation: ASCII uses 7 bits to represent 128 characters (stored in one byte), covering English letters, digits, punctuation, and control codes.

8In the fetch-decode-execute cycle, what does the program counter (PC) hold?

A.The result of the last arithmetic operation

B.The address of the next instruction to be fetched

C.The data being written to memory

D.The current contents of the accumulator

Explanation: The program counter stores the memory address of the next instruction the CPU will fetch, and it is incremented (or updated by a jump) as execution proceeds.

9What is the primary purpose of cache memory in a computer?

A.To provide permanent storage for the operating system

B.To reduce average data access time by storing frequently used data close to the CPU

C.To back up files in case of a power failure

D.To connect peripheral devices to the motherboard

Explanation: Cache is small, very fast memory between the CPU and main memory that holds frequently accessed data and instructions, reducing average access time.

10Which port standard is most commonly used today to connect external keyboards, mice, and flash drives to a personal computer?

A.USB

B.PS/2

C.Parallel (LPT)

D.Serial (RS-232)

Explanation: USB (Universal Serial Bus) is the dominant standard for connecting most modern peripherals, supporting hot-swapping and providing power.

About the Sri Lanka ICT Service Exam Exam

The Sri Lanka ICT Service Open Competitive Examination recruits officers to Grade III of Class 1 of the Sri Lanka Information and Communication Technology Service under the Ministry of Public Administration. It tests core ICT knowledge across computer fundamentals, operating systems, networking, databases, programming, software engineering, web technologies and information security, alongside general knowledge and reasoning aptitude.

Assessment

Written competitive examination with question papers covering Information and Communication Technology and general knowledge/aptitude; the exact number of papers, questions and marks is fixed in each Government Gazette notification.

Time Limit

Set per question paper in the official examination notification, typically a few hours in total across the papers.

Passing Score

Merit-based selection on total marks; candidates are ranked and chosen according to the number of vacancies, with no single fixed pass mark published.

Exam Fee

Application and examination fees are announced in the relevant Government Gazette and on the Department of Examinations portal; confirm the current amount before applying. (Ministry of Public Administration (Sri Lanka ICT Service), with the examination conducted by the Department of Examinations, Sri Lanka.)

Sri Lanka ICT Service Exam Exam Content Outline

12%

Computer Fundamentals and Hardware

Number systems, data representation, logic gates, CPU and memory hierarchy, storage and I/O devices.

10%

Operating Systems

OS functions, processes, scheduling, deadlock, virtual memory, file systems and Linux/Unix commands.

13%

Networking

OSI and TCP/IP models, IP addressing, subnetting, protocols, ports, routing and network devices.

11%

Databases and SQL

Relational model, keys, normalization, SQL queries and joins, transactions, indexing and NoSQL.

12%

Programming and Algorithms

Data structures, complexity, sorting, searching, control flow, recursion and OOP concepts.

Software Engineering and SDLC

SDLC, Agile, waterfall, UML basics, testing types and version control.

Web Technologies

HTML, CSS, JavaScript, HTTP, DNS, JSON and client-server architecture.

10%

Information Security

CIA triad, cryptography, firewalls, malware, phishing, authentication and secure transport.

IT Project Management and e-Government

Critical path, risk, cloud basics, Sri Lankan e-Government, ICTA and IT law.

General Knowledge and Reasoning

Logical reasoning, number series, arithmetic and percentage aptitude and ICT awareness.

How to Pass the Sri Lanka ICT Service Exam Exam

What You Need to Know

Passing score: Merit-based selection on total marks; candidates are ranked and chosen according to the number of vacancies, with no single fixed pass mark published.
Assessment: Written competitive examination with question papers covering Information and Communication Technology and general knowledge/aptitude; the exact number of papers, questions and marks is fixed in each Government Gazette notification.
Time limit: Set per question paper in the official examination notification, typically a few hours in total across the papers.
Exam fee: Application and examination fees are announced in the relevant Government Gazette and on the Department of Examinations portal; confirm the current amount before applying.

Keys to Passing

Complete 500+ practice questions
Score 80%+ consistently before scheduling
Focus on highest-weighted sections
Use our AI tutor for tough concepts

Sri Lanka ICT Service Exam Study Tips from Top Performers

1Build a strong base in core ICT fundamentals first, including number systems, the OSI/TCP-IP models, IP addressing and basic SQL, since these recur across most question papers.

2Practise networking subnetting and algorithm complexity questions deliberately, because they are commonly tested and benefit most from repeated timed practice.

3Do not neglect general knowledge, reasoning and Sri Lankan e-Government topics such as ICTA and the Computer Crimes Act, as these can be easy marks if revised.

Frequently Asked Questions

Who conducts the Sri Lanka ICT Service open competitive examination?

The examination is held under the Ministry of Public Administration for recruitment to the Sri Lanka ICT Service and is conducted by the Department of Examinations, Sri Lanka, on behalf of the appointing authority. Details for each cycle are published in the Government Gazette.

What subjects does the exam cover?

The written examination focuses on Information and Communication Technology, including computer fundamentals, operating systems, networking, databases, programming, software engineering, web technologies and information security, together with general knowledge and reasoning aptitude.

Is there a fixed pass mark for the exam?

Selection is merit-based on the total marks obtained at the written examination. There is no single fixed pass percentage published; candidates are ranked and selected according to the number of vacancies announced in the Gazette notification.

How can I find the official syllabus and application details?

Refer to the Government Gazette notification and the Ministry of Public Administration and Department of Examinations websites for the official syllabus, paper structure, fees and application procedure for the current recruitment cycle.