a)Request Sequence: Allocate(D), Allocate(B), Allocate(F), Deallocate(D), Deallocate(F),Allocate(G), Allocate(I)First-fitThe best algorithm for this sequence of requests is:The amount of internal fragmentation (in KB) for this algorithm isBest-fitFirst-fitb)Request Sequence: Allocate(C), Allocate(E), Allocate(D), Allocate(A), Deallocate(C),Deallocate(D), Allocate(H), Allocate(F), Allocate(J)Best-fitThe best algorithm for this sequence of requests is:The amount of internal fragmentation (in KB) for this algorithm isFirst-fitWorst-fitc)Request Sequence: Allocate(I), Allocate(H), Allocate(G), Allocate(F), Allocate(D), Deallocate(I),Deallocate(G), Deallocate(D), Allocate(K), Allocate(E), Allocate(G), Allocate(A)Best-fitWorst-fitThe best algorithm for this sequence of requests is:The amount of internal fragmentation (in KB) for this algorithm isWorst-fit ProcessABCDEFGHI JKSize (in KB) 4.27.2 2.5 4.5 3 2.7 1.5|2|3.62.2|1Allocate(P) represents an allocation request by process P for the size shown in the above tableDeallocate(P) is used to indicate deallocating the memory allocated to process PTo represent memory, in square brackets, we use P to indicate a memory segment allocated to P andwe use an integer to indicate a contiguous free part of memory. For example, after the followingsequence of requests: Allocate(B), Allocate(G), Allocate(H), Deallocate(G) memory will look likethis:B8KBWe represent this memory by [B,2,H,4].free H2KB 2KBFor each of the following sequence of requests, apply the First-fit, Best-fit, and Worst-fit allocationschemes. Assume that for each algorithm, you always start at the beginning of the list and if there aremultiple possible equal-size holes that can be selected by an algorithm, the first one is selected. Showthe following:i. If all the requests can be satisfied, indicate the memory representation at the end of the sequence.If a request cannot be satisfied by an algorithm, indicate which request is this and the memoryrepresentation at this point. For example, consider adding the request Allocate(X) to theprevious example. The following are answer examplesIf X is requesting 6 KB the answer will be:[B,2,H,4] and Allocate(X) cannot be satisfiedIf X is requesting 3 KB, the answer will be[B,2,H,X,1]free4KBii. Which method is the best for this particular sequence, and the amount (in KB) of internalfragmentation at the end of the sequence for this best method.

Resource allocation in memory refers to the process of allocating memory resources to different…

Request Sequence: Allocate(D), Allocate(B), Allocate(F), Deallocate(D), Deallocate(F), Allocate(G), Allocate(I) First-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is Best-fit First-fit b) Request Sequence: Allocate(C), Allocate(E), Allocate(D), Allocate(A), Deallocate(C), Deallocate(D), Allocate(H), Allocate(F), Allocate(J) Best-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is First-fit Worst-fit c) Request Sequence: Allocate(I), Allocate(H), Allocate(G), Allocate(F), Allocate(D), Deallocate(I), Deallocate(G), Deallocate(D), Allocate(K), Allocate (E), Allocate(G), Allocate(A) Best-fit Worst-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is Worst-fit

Request Sequence: Allocate(D), Allocate(B), Allocate(F), Deallocate(D), Deallocate(F), Allocate(G), Allocate(I) First-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is Best-fit First-fit b) Request Sequence: Allocate(C), Allocate(E), Allocate(D), Allocate(A), Deallocate(C), Deallocate(D), Allocate(H), Allocate(F), Allocate(J) Best-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is First-fit Worst-fit c) Request Sequence: Allocate(I), Allocate(H), Allocate(G), Allocate(F), Allocate(D), Deallocate(I), Deallocate(G), Deallocate(D), Allocate(K), Allocate (E), Allocate(G), Allocate(A) Best-fit Worst-fit The best algorithm for this sequence of requests is: The amount of internal fragmentation (in KB) for this algorithm is Worst-fit

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

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//Algorithm should: /*NOT destroy any of the originally even-valued node. This means that the originally even-valued nodes should be retained as part of the resulting list. Destroy ONLY nodes that are originally odd-valued. Create new nodes and copy data between nodes ONLY when duplicating originally even-valued nodes. Only ONE new node should be created for each originally even-valued node. Creating pointer-to-node's (to provide temporary storage for node addresses) does not constitute creating new nodes or copying of items. NOT make any temporary copies of any of the data items (using any kind of data structures including but not limited to arrays, linked lists and trees). This means that the algorithm should largely involve the manipulation of pointers. Function must be iterative (NOT recursive) - use only looping construct(s), without the function calling itself (directly or indirectly). Function should not call any other functions to help in performing…