Chapter 2 questions PCOS
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| show | Each program to be processed was loaded in its entirety into memory and allocated as much contiguous space in memory as it needed
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| show | sequentially
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| In the algorithm to load a job in a single-user system, the program counter is initially set to ____. | show 🗑
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| Fixed partitions are also called ____ partitions. | show 🗑
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| ____ is the first step in the algorithm to load a job in a fixed partition. | show 🗑
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| In the partition scheme, the table that the Memory Manager uses to keep track of jobs is composed of the ____. | show 🗑
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| show | when jobs have the same size
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| show | External fragmentation
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| show | first-fit memory allocation
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| ____ has the least wasted space and the smallest partition fitting the requirements. | show 🗑
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| ____ is how memory is deallocated in a fixed partition scheme. | show 🗑
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| In a dynamic partition scheme, ____, is how the Memory Manager deallocates a block that is between two other free blocks. | show 🗑
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| When memory is deallocated, an entry can be removed from the free list by creating a(n) ____. | show 🗑
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| A(n) ____ in the busy list occurs when a memory block between two other busy memory blocks is returned to the free list. | show 🗑
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| show | compaction
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| The operating system can tell the ____ of each group of digits by its location in the line and the operation code. | show 🗑
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| The ____ contains the value that must be added to each address referenced in the program so it will be able to access the correct memory addresses after relocation. | show 🗑
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| ____ is the actual memory address for a job that starts at 18K | show 🗑
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| show | overhead
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| One approach to performing compaction is to do it when a certain ____ of memory becomes busy. | show 🗑
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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