Consider a situation in which physical memory contains 62 page frame. How many number of bits will be required in physical and logical address, if a memory management system has 128 pages with 1024 bytes page size ? 

This question was previously asked in
NIELIT Scientific Assistant IT 5 Dec 2021 Official Paper
View all NIELIT Scientific Assistant Papers >
  1. 14 and 15 
  2. 15 and 16
  3. 16 and 17
  4. 14 and 16

Answer (Detailed Solution Below)

Option 4 : 14 and 16
Free
NIELIT Scientific Assistant Quantitative Aptitude Mock Test
0.9 K Users
20 Questions 20 Marks 30 Mins

Detailed Solution

Download Solution PDF

The correct answer is option 4) 14 and 16

Key Points

  • Page size = 1024 bytes → 210 bytes, so offset requires 10 bits.
  • Total number of pages = 128 → 27, so logical page number requires 7 bits.
  • Logical Address = Page Number + Offset → 7 + 10 = 17 bits.
  • Physical memory contains 62 page frames → Nearest power of 2 ≥ 62 is 64 → 26 page frames.
  • Physical Address = Frame Number + Offset → 6 + 10 = 16 bits.

Additional Information

  • Logical Address = bits required to uniquely identify each page (Page number) + Offset within page.
  • Physical Address = bits to identify the frame + Offset (same as in logical address).

Hence, the correct answer is: option 4) 14 and 16

Latest NIELIT Scientific Assistant Updates

Last updated on Jul 3, 2025

-> NIELIT Scientific Assistant answer key 2025 has been released at the official website. 

-> NIELIT Scientific Assistant admit card 2025 has been released. 

-> NIELIT Scientific Assistant city intimation slip 2025 has been released at the official website.

-> NIELIT Scientific Assistant exam 2025 is scheduled to be conducted on June 28. 

-> A total number of 113 revised vacancies have been announced for the post of Scientific Assistant in Computer Science (CS), Information Technology (IT), and Electronics & Communication (EC) streams.

-> Online application form, last date has been extended up to from 17th April 2025.

->The NIELT has revised the Essential Qualifications for the post of Scientific Assistant. Candidates must possess (M.Sc.)/ (MS)/ (MCA) / (B.E.)/ (B.Tech) in relevant disciplines.

 

-> The NIELIT Scientific Assistant 2025 Notification has been released by the National Institute of Electronics and Information Technology (NIELIT).

More Non Contiguous Questions

More Memory Management Questions

Get Free Access Now
Hot Links: teen patti cash game teen patti tiger teen patti winner