Suppose that you have a UNIX file system where the disk block size i take 32 bits (4 bytes), and the i-node contains 12 direct pointers, one pointer. Assume an index block is the same size as a data block (both data and it is never been accessed, we only assume the file's i-node i process wants to access to read the entire file into the memory, how

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
icon
Related questions
Question
Suppose that you have a UNIX file system where the disk block size is 4096 bytes. Disk addresses and file block pointers
take 32 bits (4 bytes), and the i-node contains 12 direct pointers, one single-indirect pointer and one double-indirect
pointer. Assume an index block is the same size as a data block (both 4096 Bytes). If there is a file having 50,000 bytes of
data and it is never been accessed, we only assume the file's i-node is in memory, but none of the rest of the file. If the user
process wants to access to read the entire file into the memory, how many I/O operations would be needed?
O
a. 15
O b. 12
O c. 14
O d. 13
Transcribed Image Text:Suppose that you have a UNIX file system where the disk block size is 4096 bytes. Disk addresses and file block pointers take 32 bits (4 bytes), and the i-node contains 12 direct pointers, one single-indirect pointer and one double-indirect pointer. Assume an index block is the same size as a data block (both 4096 Bytes). If there is a file having 50,000 bytes of data and it is never been accessed, we only assume the file's i-node is in memory, but none of the rest of the file. If the user process wants to access to read the entire file into the memory, how many I/O operations would be needed? O a. 15 O b. 12 O c. 14 O d. 13
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Arrays
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education