ICT Revision MCQ Series 3. Data Representation Methods

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ICT Revision MCQ Series – Master Your Knowledge with Interactive Questions

Introduction In today’s fast-paced learning environment, multiple-choice questions (MCQs) have become a powerful tool for quick revision and self-assessment. Our Revision MCQ Series is designed to help students reinforce their understanding of key concepts through well-structured MCQs.

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ICT Revision MCQ Series 3. Data Representation Methods
This quiz assesses your knowledge of Grade 10 ICT lessons and serves as a revision test for your O/L examination preparation. It helps reinforce key concepts and improve your understanding of important ICT topics.
Perfect for:
Sri Lankan OL ICT students revising core concepts.
Building a strong foundation for exams and practical applications.
Good luck! 🖥️📊

1 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the hexadecimal equivalent of the decimal number 255?
FF
EE
DD
CC

255 in decimal is FF in hexadecimal (15?16 + 15?1 = 255).
2 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the binary equivalent of the decimal number 25?
11001
10101
11100
10011

25 in decimal is 11001 in binary (16 + 8 + 1 = 25).
3 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following storage devices has the fastest access speed?
Cache
Hard Disk
RAM
USB Drive

Cache memory has the fastest access speed due to its proximity to the CPU.
4 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Convert the binary number 1110110111101111? into a hexadecimal number.
EDF??
FDE??
DEF??
EFD??

Group the binary digits into sets of four from right to left: 1110 1101 1110 1111. Convert each group to hex.
5 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Match the following number systems with their base values.
(a-2, b-1, c-4, d-3)
(a-1, b-2, c-3, d-4)
(a-4, b-3, c-2, d-1)
(a-3, b-4, c-1, d-2)

Binary is base 2, decimal is base 10, hexadecimal is base 16, and octal is base 8.
6 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is NOT a unit of data storage measurement?
Pixel
Bit
Byte
Terabyte

A pixel is a unit of display resolution, not data storage.
7 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the decimal equivalent of the octal number 47?
39
47
55
63

47 in octal is 39 in decimal (4?8 + 7?1 = 39).
8 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the correct order of data storage capacities from smallest to largest?
Bit, Byte, Kilobyte, Megabyte, Gigabyte, Terabyte
Byte, Bit, Kilobyte, Megabyte, Gigabyte, Terabyte
Bit, Byte, Megabyte, Kilobyte, Gigabyte, Terabyte
Byte, Bit, Megabyte, Kilobyte, Gigabyte, Terabyte

The correct order is Bit < Byte < Kilobyte < Megabyte < Gigabyte < Terabyte.
9 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is NOT a coding system used in computers?
JPEG
ASCII
Unicode
BCD

JPEG is an image compression format, not a coding system for text.
10 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Match the following units of measurement with their approximate sizes.
(a-1, b-2, c-3, d-4)
(a-2, b-1, c-4, d-3)
(a-3, b-4, c-1, d-2)
(a-4, b-3, c-2, d-1)

A bit is the smallest unit, a byte is 8 bits, a kilobyte is 1,024 bytes, and a megabyte is 1,024 kilobytes.
11 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is NOT a unit of data storage capacity?
Hertz
Kilobyte
Megabyte
Gigabyte

Hertz is a unit of frequency, not data storage.
12 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the hexadecimal equivalent of the binary number 11011011?
DB
BC
CD
DA

11011011 in binary is DB in hexadecimal (D = 13, B = 11).
13 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is NOT a method of data representation in computer systems?
Analog
Binary
Decimal
Hexadecimal

Computers use digital systems, which rely on binary, decimal, and hexadecimal representations, not analog.
14 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the decimal equivalent of the hexadecimal number A3?
163
153
173
183

A3 in hexadecimal is 163 in decimal (A = 10, 10?16 + 3?1 = 163).
15 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Convert the binary number 1110110111101111? into an octal number.
16737?
15677?
17657?
14767?

Group the binary digits into sets of three from right to left: 111 011 011 110 111. Convert each group to octal.
16 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following statements about number systems are true?
(a) and (b)
(a) and (c)
(b) and (d)
(a) and (d)

Binary is fundamental in computers, and hexadecimal simplifies binary. Octal is less common, and decimal is not the only system used in programming.
17 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
ICT is used in various sectors. In education, it enables ___________ learning. In business, it facilitates communication through ___________. In healthcare, it manages patient records with ___________. For government services, it improves citizen access via ___________.
remote, email, databases, websites
physical, meetings, paper, queues
traditional, memos, filing cabinets, offices
classroom, phones, folders, counters

ICT enables remote learning, email communication, database management, and online government services.
18 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Convert the binary number 1110110111101111? into a decimal number.
60927??
61235??
60783??
61439??

Multiply each binary digit by powers of 2 and sum the values.
19 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
The binary number system uses ___________ to represent data. In contrast, the decimal system uses ___________ . The hexadecimal system uses ___________ , and the octal system uses ___________ .
0 and 1, 0-9, 0-9 and A-F, 0-7
0-9, 0 and 1, 0-7, 0-9 and A-F
0 and 1, 0-7, 0-9, 0-9 and A-F
0-9, 0-7, 0 and 1, 0-9 and A-F

Binary uses 0 and 1, decimal uses 0-9, hexadecimal uses 0-9 and A-F, and octal uses 0-7.
20 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following statements about number systems are true?
All of the above
(a), (b), and (c)
(b), (c), and (d)
(a), (c), and (d)

Binary uses base 2, octal uses base 8, hexadecimal uses base 16, and decimal uses base 10.
21 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Convert the binary number 101101101101? into an octal number.
5555?
5655?
5565?
6555?

Group the binary digits into sets of three from right to left: 101 101 101 101. Convert each group to octal.
22 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the binary equivalent of the hexadecimal number 2F?
101111
101011
110111
111011

2F in hexadecimal is 00101111 in binary (2 = 0010, F = 1111).
23 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following coding systems supports the most characters?
Unicode
ASCII
EBCDIC
BCD

Unicode supports over a million characters, far more than ASCII, EBCDIC, or BCD.
24 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Convert the binary number 101101101101? into a hexadecimal number.
B6D??
D6B??
6DB??
BD6??

Group the binary digits into sets of four from right to left: 1011 0110 1101. Convert each group to hex.
25 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is NOT a method for converting decimal to binary?
Multiplication by 2
Division by 2
Subtraction of powers of 2
Using a conversion table

Multiplication by 2 is not a method for converting decimal to binary.
26 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following is the largest storage capacity?
1024 Gigabytes
1 Terabyte
1024 Megabytes
1024 Kilobytes

1024 Gigabytes equals 1 Terabyte, which is larger than 1024 Megabytes or 1024 Kilobytes.
27 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
What is the octal equivalent of the binary number 101101?
55
45
65
75

101101 in binary is 55 in octal (101 = 5, 101 = 5).
28 / 28
Category: Revision MCQ OL Grade 10 Lesion 3
Select Your Preferred Language 😊
Which of the following storage devices has the smallest capacity?
Cache
RAM
Hard Disk
USB Drive

Cache memory has the smallest capacity compared to RAM, hard disks, and USB drives.
Your score is
0%

Table of Contents

3. Investigates the Methods Used to Represent Data in Computer Systems

3.1 Uses the binary number system to represent data in computer systems.
- Methods of data representations: 1 and 0 to represent two states, Binary number system
3.2 Converts decimal numbers to Binary, Octal, and Hexadecimal.
- Number systems: Decimal, Binary, Octal, Hexadecimal
- Methods for number systems conversions
3.3 Converts Binary numbers to Decimal, Octal, and Hexadecimal numbers and vice versa.
- Methods for conversions (positive integers only)
3.4 Determines the capacity of data storage.
- Units of measurement: Bit, Byte, Kilo Byte, Mega Byte, Giga Byte, Tera Byte
- Order of capacities of different storage devices: Cache, RAM, ROM, Hard Disk, Compact Disk, USB Drives
3.5 Explores coding systems in computers.
- BCD, EBCDIC, ASCII, Unicode

Why Use MCQs for Learning?

MCQs are a great way to evaluate your understanding of a subject in a structured manner. Here’s why they are effective:

Quick and Efficient – MCQs allow for rapid assessment of knowledge.
Engaging and Interactive – They keep learning interesting and encourage active participation.
Memory Retention – Answering questions enhances recall and reinforces concepts.
Instant Feedback – You can immediately check your answers and improve your understanding.

Tips MCQ-Based Exams

To score well in MCQ exams, follow these strategies:

Understand the Concepts – Don’t just memorize answers; understand the logic behind them.
Eliminate Wrong Options – Narrow down choices by eliminating incorrect answers.
Time Management – Avoid spending too much time on one question.
Practice Regularly – Consistent practice improves accuracy and speed.
Read Carefully – Pay attention to tricky words like not, always, and except.

Conclusion

The Revision MCQ Series is your go-to resource for mastering concepts efficiently. Keep practicing with Lesson 1 questions and stay tuned for upcoming lessons. Your success starts with consistent revision and smart study techniques!

FAQs

1. How can MCQs help in learning? MCQs improve retention, provide quick assessment, and make learning engaging.

2. Can I find more lessons in this series? Yes! We regularly update the Revision MCQ Series with new lessons. Stay tuned!

3. How should I prepare for MCQ-based exams? Understand concepts, practice regularly, manage time well, and eliminate wrong answers.

4. Where can I access more MCQs? You can find additional MCQs on our website or in upcoming blog posts.

5. Is this MCQ series suitable for all students? Yes! Whether you’re a beginner or an advanced learner, this series is designed to help everyone improve their knowledge.

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ICT Revision MCQ Series 3. Data Representation Methods

3. Investigates the Methods Used to Represent Data in Computer Systems

Why Use MCQs for Learning?

Tips MCQ-Based Exams

Conclusion

FAQs

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