Question 2: This diagram shows an example of memory configuration under dynamic partitioning, aftera number of placement and swapping-out operations have been carried out. Addresses go from left toright; gray areas indicate blocks occupied by processes; white areas indicate free memory blocks. Thelast process placed is 2-Mbyte and is marked with an X. Only one process was swapped out after that.4MM X 5M8M2M 4M3Ma. What was the maximum size of the swapped-out process?b. What was the size of the free block just before it was partitioned by X?C.A new 3-Mbyte allocation request must be satisfied next. Indicate the intervals of memorywhere a partition will be created for the new process under the following four placementalgorithms: best-fit, first-fit, next-fit, worst-fit. For each algorithm,

Certainly, I can provide a more detailed explanation of the memory configuration and the placement…

Answered: Question 2: This diagram shows an…

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

See similar textbooks

Similar questions

Consider a file system on a disk that has both logical and physical block sizes of 512 bytes. Assume that the information about each file is al ready in memory. For each of the three allocation strategies (contiguous, linked, and indexed), answer these questions: a. How is the logical-to-physical address mapping accomplished in this system? (For the indexed allocation, assume that a file is always less than 512 blocks long.) b. If we are currently at logical block 10 (the last block accessed was block 10) and want to access logical block 4, how many physical blocks must be read from the disk
Consider a fixed partitioning scheme with equal-size partitions of 2¹6 bytes and a total main memory size of 224 bytes. A process table is maintained that includes a pointer to a partition for each resident process. How many bits are required for the pointer?
Computer Science 17. Tree-structured directory design does not allow us to create links for a file or folder. Group of answer choices True/False 18. With the same amount of total data access, processes with larger working sets tend to run faster. True/False 19. A cache miss means that the requested data is not stored in the cache and must be fetched from the hard drive before the program can proceed.
An operating system follows a variable memory partitioning model. The system keeps track of empty blocks in a linked list in the order of their address, where each node stores the size of next empty block in the memory. Say that current state of the memory is hold by the linked list shown below, which tells that there are currently four empty blocks in the memory, and the size of first block is 12 byte etc. Assume that following memory block requests have been made in given order: 8 bytes, 2 bytes and 6 bytes. Draw the linked list to be changed after each block assignment by the following strategies [12.5p each]; (a) First Fit (c) Best Fit
Consider a pair of processes in a shared memory system such that process A updates a data structure, and then sets a flag to indicate that the update is completed. Process B monitors the flag, and starts processing the data structure only after it finds the flag is set. Explain the problems that could arise in a memory architecture where writes may be reordered, and explain how the sfence and lfence instructions can be used to ensure the problem does not occur.
4. The following is the memory configuration at a given point in time where dynamic partitioning scheme is used. The shaded areas indicate memory spaces already allocated to other processes, while the white spaces are holes (free memory spaces). The next FOUR (4) memory requests are 30M, followed by 50M, 20M and 40M (in order). Shade and indicate clearly which memory block will be allocated to each request using the first- fit and next-fit placement algorithms. (First-fit) 20M (Best-fit) 20M (Next-fit) 20M 1 80M 2 3 4 80M b. Given a process segment table as follows: Segment 0 80M (X is the lastest allocated block) 20M Base 496 1202 232 2359 1877 20M 20M Length 691 85 198 109 258 50M 50M 50M 10M 10M 10M X 30M 30M 30M Explain the basic use of segment table in process segmentation and its difference with paging. Give one example on how the information in the given process segment table is used.
2. Briefly outline the idea of the BestFit memory allocation strategy in the context of a variable partitioning scheme and explain its disadvantages.
Consider a paged virtual memory system in which a process is allocated with 4 frames. The contents of the page map table are given below with two frames being empty. PageActual frame address in memory 4 122 344 477 898 Assume that the order in which the pages appear is the order in which the pages were added to the table (i.e., Page 2 was accessed after Page 4) Assume that the subsequent page accessing is : 1,2,3,4,1,2,5 Using LRU page-replacement algorithm, What frame is accessed by Page 5. 477 O 344 122 O 898

Recommended textbooks for you

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)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

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)

Computer Science

ISBN:

9780134444321

Author:

Tony Gaddis

Publisher:

PEARSON

Digital Fundamentals (11th Edition)

Computer Science

ISBN:

9780132737968

Author:

Thomas L. Floyd

Publisher:

PEARSON

C How to Program (8th Edition)

Computer Science

ISBN:

9780133976892

Author:

Paul J. Deitel, Harvey Deitel

Publisher:

PEARSON

Database Systems: Design, Implementation, & Manag…

Computer Science

ISBN:

9781337627900

Author:

Carlos Coronel, Steven Morris

Publisher:

Cengage Learning

Programmable Logic Controllers

Computer Science

ISBN:

9780073373843

Author:

Frank D. Petruzella

Publisher:

McGraw-Hill Education

SEE MORE TEXTBOOKS