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Data Representation and Logic PYQs – Computer, SSC & Railway

13 Data Representation and Logic (Computer) questions asked in recent SSC and Railway exams, newest first, with exam, date & shift, answers and solutions.

📚 13 questionsSSC 0 · Railway 13
RRB NTPC UG CBT-1 2025-26 – 7 May 2026 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q1. Extended ASCII, an 8-bit evolution of the original 7-bit ASCII standard, supports international text by expanding the character set. How many total codes does it provide?

  1. (a) 512 codes for voice recordings
  2. (b) 128 codes limited to English letters
  3. (c) 256 codes including accented characters
  4. (d) 1024 codes for video compression
Answer & solution

Answer: (c) 256 codes including accented characters

Extended ASCII - 8-bit Character Encoding
Original ASCII: 7-bit → 2⁷ = 128 codes
Extended ASCII: 8-bit → 2⁸ = 256 codes
Additional 128 codes (128-255) include:
• Accented characters (é, ñ, ü)
• Special symbols and graphics
• International language support
Answer: Option 3 → 256 codes including accented characters
RRB NTPC GL CBT-1 2025-26 – 25 March 2026 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q2. Which of the following statements about ASCII is correct?

  1. (a) ASCII is a type of local area network
  2. (b) ASCII is used to store audio on a CD
  3. (c) ASCII represents characters using numeric codes
  4. (d) ASCII is a high-capacity optical disk format
Answer & solution

Answer: (c) ASCII represents characters using numeric codes

Topic: ASCII (American Standard Code for Information Interchange)
Key Facts:
ASCII is a character encoding standard that assigns numeric codes to characters.
It uses 7-bit binary numbers (0-127) to represent letters, digits, and symbols.
Example: 'A' = 65, 'a' = 97, '0' = 48
Analysis of Options:
Option 1: Incorrect - ASCII is not a network type
Option 2: Incorrect - ASCII is not for audio storage
Option 3:Correct- ASCII represents characters using numeric codes
Option 4: Incorrect - ASCII is not a disk format
Answer: Option 3 → ASCII represents characters using numeric codes
RRB NTPC GL CBT-1 2025-26 – 22 March 2026 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q3. The abbreviation ASCII is a critical computer standard used worldwide. The letter C in ASCII stands for Code, indicating that ASCII is a standard system for assigning a unique numerical value to every single character, which is known as a character _________________.

  1. (a) encoding scheme
  2. (b) memory component
  3. (c) input device
  4. (d) processing chip
Answer & solution

Answer: (a) encoding scheme

Topic: ASCII (American Standard Code for Information Interchange)
ASCIIis a character encoding standard that assigns unique numerical values to characters.
The full form is:American Standard Code for Information Interchange
It maps characters (letters, digits, symbols) to numbers (0-127 in standard ASCII).
This mapping system is called acharacter encoding scheme.
Answer: Option 1 → encoding scheme
RRB NTPC UG CBT-1 2024-25 – 3 September 2025 Shift 2 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q4. What does the abbreviation ASCII stand for?

  1. (a) Automated System Code for International Interfacing
  2. (b) Advanced Standard Communication for Information Integration
  3. (c) American Standard Code for Information Interchange
  4. (d) American Standard Code for Internet Information
Answer & solution

Answer: (c) American Standard Code for Information Interchange

RRB NTPC UG CBT-1 2024-25 – 3 September 2025 Shift 2 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q5. What does the abbreviation EBCDIC stand for?

  1. (a) Electronic Binary Code for Data Interchange Communication
  2. (b) Extended Binary Coded Decimal Interchange Code
  3. (c) Encoded Binary Character Data Interchange Code
  4. (d) Extended Binary Code for Digital Information Communication
Answer & solution

Answer: (b) Extended Binary Coded Decimal Interchange Code

RRB NTPC UG CBT-1 2024-25 – 29 August 2025 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q6. What does ASCII stand for?

  1. (a) American Standard Code for Information Interchange
  2. (b) Auxiliary System for Communication and Interchange
  3. (c) Advanced Standard Coding in Information Industry
  4. (d) Automated System for Computer Information Interchange
Answer & solution

Answer: (a) American Standard Code for Information Interchange

RRB NTPC UG CBT-1 2024-25 – 21 August 2025 Shift 2 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q7. What does the abbreviation ASCII stand for?

  1. (a) American Scientific Code for Internet Integration
  2. (b) American Standard Code for Information Interchange
  3. (c) Automatic System for Coding Interactive Interfaces
  4. (d) Advanced System for Computer Input and Integration
Answer & solution

Answer: (b) American Standard Code for Information Interchange

RRB NTPC UG CBT-1 2024-25 – 14 August 2025 Shift 2 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q8. What does the abbreviation ASCII stand for?

  1. (a) American Standard Code for Information Interchange
  2. (b) Analog Signal Coding Interface Index
  3. (c) Advanced Secure Communication Interface
  4. (d) Automated System for Computer Integrated Information
Answer & solution

Answer: (a) American Standard Code for Information Interchange

RRB NTPC GL CBT-1 2024-25 – 24 June 2025 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q9. Which of the following numbers is used to represent the ASCII value of the uppercase letter 'B'?

  1. (a) 65
  2. (b) 90
  3. (c) 97
  4. (d) 66
Answer & solution

Answer: (d) 66

RRB NTPC GL CBT-1 2024-25 – 18 June 2025 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q10. With reference to computing, what does ASCII stand for?

  1. (a) Algorithmic Standard Code for International Information
  2. (b) American Systematic Code for International Interoperability
  3. (c) American Standard Code for Information Interchange
  4. (d) American Standard Code for Information Integrity
Answer & solution

Answer: (c) American Standard Code for Information Interchange

RRB NTPC GL CBT-1 2024-25 – 9 June 2025 Shift 2 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q11. Which of the following statements is correct?

  1. (a) LAN supports networking over large geographic areas.
  2. (b) ASCII represents characters as numerical codes.
  3. (c) ASCII is primarily used for high-speed data transmission networks.
  4. (d) CD is a volatile storage medium.
Answer & solution

Answer: (b) ASCII represents characters as numerical codes.

RRB NTPC GL CBT-1 2024-25 – 6 June 2025 Shift 1 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q12. What is the primary purpose of the American Standard Code for Information Interchange (ASCII)?

  1. (a) To enable secure encryption of data for internet transmission
  2. (b) To design a graphical user interface for operating systems
  3. (c) To define a standardised set of codes for representing text and control characters
  4. (d) To create a programming language for text-based applications
Answer & solution

Answer: (c) To define a standardised set of codes for representing text and control characters

RRB NTPC GL CBT-1 2024-25 – 5 June 2025 Shift 3 · Computer codes (ASCII, Unicode, BCD, EBCDIC)

Q13. How many unique characters can be represented using the standard ASCII code?

  1. (a) 64
  2. (b) 512
  3. (c) 256
  4. (d) 128
Answer & solution

Answer: (d) 128

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