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The sequence of requests for blocks of size 300, 25, 125, 50 can be satisfied if we use Either first fit orbest fit policy

Question

The sequence of requests for blocks of size 300, 25, 125, 50 can be satisfied if we use Either first fit or best fit policy

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Solution

Yes, the sequence of requests for blocks of size 300, 25, 125, 50 can be satisfied using either the First Fit or Best Fit policy.

Here's how:

  1. First Fit: This policy allocates the first block of memory that is large enough to hold the object. The operating system scans the list of memory blocks and assigns the first one that has enough space.

    For example, if we have a memory block of size 500, the first request (300) can be satisfied. The remaining memory block is of size 200. The next request (25) can also be satisfied, leaving a block of size 175. The third request (125) can be satisfied as well, leaving a block of size 50. The last request (50) can be satisfied exactly.

  2. Best Fit: This policy searches the entire list and allocates the smallest block of memory that is large enough to hold the object. The goal is to minimize the amount of memory wasted.

    For example, if we have memory blocks of sizes 500, 200, 150, and 100, the first request (300) can be satisfied by the block of size 500, leaving a block of size 200. The next request (25) can be satisfied by the block of size 100, leaving a block of size 75. The third request (125) can be satisfied by the block of size 200, leaving a block of size 75. The last request (50) can be satisfied by one of the blocks of size 75.

In both cases, the sequence of requests can be satisfied. However, the efficiency and amount of memory wasted can vary depending on the specific sizes and sequence of the memory blocks and requests.

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