At a particular instance, the memory of a computer appears as shown below. Apply the Memory Allocation Algorithms to find the free memory block used for a process with a new request of size 16 K. Last allocated Block 8K 17K 24K a) What will be the free memory block, if the First Fit algorithm is used? K b) What will be the free memory block, if the Worst Fit algorithm is used? K c) What will be the free memory block, if the Best Fit algorithm is used? K d) What will be the free memory block, if the Next Fit algorithm is used? K

At a particular instance, the memory of a computer appears as shown below. Apply the Memory Allocation Algorithms to find the free memory block used for a process with a new request of size 16 K. Last allocated Block 8K 17K 24K a) What will be the free memory block, if the First Fit algorithm is used? K b) What will be the free memory block, if the Worst Fit algorithm is used? K c) What will be the free memory block, if the Best Fit algorithm is used? K d) What will be the free memory block, if the Next Fit algorithm is used? K

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Description: At a particular instance, the memory of acomputer appears as shown below. Applythe Memory Allocation Algorithms to findthe free memory block used for a processwith a new request of size 16 K.Last allocated Block8K17K24Ka) What will be the free memor

C++ Programming: From Problem Analysis to Program Design

8th Edition

ISBN:9781337102087

Author:D. S. Malik

Publisher:D. S. Malik

Chapter12: Points, Classes, Virtual Functions And Abstract Classes

Section: Chapter Questions

Problem 19SA

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Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, what is the location of the next record in the array / data area:
Student information is being held in a data area, where each student record has the following format: The first nine bytes are the student number, held in ASCII The next byte is the course mark The next word is the section identifier There are well over three hundred such student records that have been loaded sequentially into memory starting at address $10000. The last record loaded is a dummy record with a section identifier of $FFFF, to show the end of the records. If a2 has the address of a student record, if using indexed addressing mode, what is the index value X such that X(a2) addresses the course mark?
2. Suppose the list of letters A, B, C, E, F, and G are stored in a contiguous block of memory cells. What activities are required to insert the letter D in the list, assuming that the list's alphabetical order is to be maintained?
AN EXAMPLE OF THE Dynamic Partitioning Memory Allocation Algorithm using First Fit is PRESENTED in the following table. Example for First-Fit TASK 1 2 3 4 5 BEST FIT SIZE STATE 50 EXECUTION 30 EXECUTION 120 WAIT 80 WATI 25 EXECUTION WORST FIT BLOCK SAWNP 1 2 3 4 5 P.D. EXPLAIN STEP AND CALCULATION TO DO THIS SIZE STATE 120 BUSY 80 BUSY 40 BUSY 50 FREE 30 FREE TASK 1 2 5 SIZE T. Then under the previous format and the same data is to perform the following two algorithms 50 30 25 WASTE 70 50 15 50 30 215 fragmentation FRAGMENTATION CALCULATIONS 元 50 15 70 135
You are required to make changes in the above programs and introduce the use of compaction where required. Write code to simulate Worst-Fit Algorithm TASK2: DESCRIPTION One of the simplest methods for memory allocation is to divide memory into several fixed-sized partitions. Each partition may contain exactly one process. In this multiple-partition method, when a partition is free, a process is selected from the input queue and is loaded into the free partition. When the process terminates, the partition becomes available for another process. The operating system keeps a table indicating which parts of memory are available and which are occupied. Finally, when a process arrives and needs memory, a memory section large enough for this process is provided. When it is time to load or swap a process into main memory, and if there is more than one free block of memory of sufficient size, then the operating system must decide which free block to allocate. Best-fit strategy chooses the block…
You are required to make changes in the above programs and introduce the use of compaction where required. Write code to simulate Worst-Fit Algorithm TASK2: DESCRIPTION One of the simplest methods for memory allocation is to divide memory into several fixed-sized partitions. Each partition may contain exactly one process. In this multiple-partition method, when a partition is free, a process is selected from the input queue and is loaded into the free partition. When the process terminates, the partition becomes available for another process. The operating system keeps a table indicating which parts of memory are available and which are occupied. Finally, when a process arrives and needs memory, a memory section large enough for this process is provided. When it is time to load or swap a process into main memory, and if there is more than one free block of memory of sufficient size, then the operating system must decide which free block to allocate. Best-fit strategy chooses the block…
6. Next-fit is an allocation algorithm that starts by using the first-fit algorithm, but it keeps track of the partition that was last allocated, so that it can start its next search from that exact spot instead of restarting the search with Block 1. In other words, it starts searching from the most recently allocated block when the next job arrives. Using the following configuration with jobs arriving in order (Job A, B, C, and D) and with blocks shown in order from low-order memory to high-order memory: Job List: Job Number Job A Job B Job C Job D Memory Requested 625K 44K 900K 220K Memory Block List: Memory Block Block 1 Block 2 Block 3 Block 4 Block 5 Memory Block Size 250K 900K 280K 200K 50K a. Indicate which memory blocks are allocated to each of the arriving jobs. b. Explain in your own words what advantages the next-fit algorithm could offer.
Student information is stored in a data area, and each student entry is formatted as follows:The first nine bytes are the student ID in ASCII format.The following byte is the course score.The following phrase is the section identifier. There are over 300 such student records in memory, which have been loaded consecutively beginning at address $10000. To indicate the conclusion of the records, the last record loaded is a dummy record with a section identifier of $FFFF. Create an assembler subroutine GetMax that searches the complete list for the highest mark. If there is a tie, the student with the highest score on the list should be found. The beginning address of the subroutine should be returned.
Job list: Job Number Memory Requested J1 700k J2 500k J3 740k Memory List Memory Block Size Block 1 610k (low - order memory) 850k Block 2 Block 3 700k (high - order memory) a.) Use the best-fit algorithm to allocate the memory blocks to the three arriving jobs b.) Use the first-fit algorithm to allocate the memory blocksto the three arriving jobs
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Find the PA of the memory location and its contents after the execution of thefollowing assuming that DS=1512h. MOV AL, 99h MOV [3518], AL
Using Worst Fit as our dynamic memory allocation strategy, which available block of memory would we allocate an object request that requires 32 bytes Occupied Free-50 Occupied Free-40 Occupied Free-32 Occupied Free-1,000 Free-50 Free-40 Free-32 Free-1,000 Not enough memory