File compression: It is the process of shrinking a file in order to reduce the actual size of the file. This is done in order to free up spaces on the storage media. It is easy for the user to attach the compressed file to e-mail which reduces the time required for the file transmission. Compressed files are also called as zipped files. If a person gets a compressed file, then he/ she should unzip the file in order to get the original form.

Question

6. What is Race condition? How to prevent it? [2 marks] 7. How many synchronization methods do you know and compare the differences. [2 marks] 8. Explain what are the “mutual exclusion”, “deadlock”, “livelock”, and “eventual entry”, with the traffic intersection as an example like dinning philosophy. [2 marks] 9. For memory allocation, what are the difference between internal fragmentation and external fragmentation. Explain with an example. [2 marks] 10. How can the virtual memory map to the physical memory. Explain with an example. [2 marks]

Answer 1

Question

Chapter 4, Problem 2.3E

Program Plan Intro

File compression:

It is the process of shrinking a file in order to reduce the actual size of the file. This is done in order to free up spaces on the storage media.

It is easy for the user to attach the compressed file to e-mail which reduces the time required for the file transmission.

Compressed files are also called as zipped files.

If a person gets a compressed file, then he/ she should unzip the file in order to get the original form.

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