OS Final Exam 2025 121-163 questions

The memory allocation scheme subject to "Internal" fragmentation is:

• Paging

• Fixed partitioning

• Segmentation

• Swapping

Any program, no matter how small, will occupy an entire partition results in:

• External fragmentation

• Internal fragmentation

• Segmentation fault

• Page fault

How to solve the problem of equal-size partitions?

• Use paging

• Use segmentation

• Unequal-size partitions

• Increase partition size

How to solve the problem of "external" fragmentation?

• Segmentation

• Compaction

• Paging

• Partitioning

A page fault:

• Happens when CPU overheats

• Is an access to a page not currently in memory

• Occurs when disk is full

• Happens during swapping

Which of the following statements is false?

• Internal fragmentation increases with small pages

• External fragmentation occurs in segmentation

• Page fault occurs when page is not in memory

• Compaction reduces fragmentation

Swapping:

• Moving processes between RAM and disk to manage memory

• Manages CPU instructions

• Increases cache size

• Handles interrupts

Which of the following is not true about memory management?

• Virtual memory helps large programs

• Virtual memory is used only in multi-user systems

• Paging avoids external fragmentation

• Segmentation can cause fragmentation

True or false: Segmentation suffers from external fragmentation?

• True

• False

True or false: Paging suffers from external fragmentation?

• True

• False