Operating System Programming and Technical

Q. What are the disadvantages of context switching?

A. Time taken for switching from one process to other is pure over head. Because the system does no
useful work while switching. So one of the solutions is to go for threading when ever possible.

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Operating System Other Question
Q. What is relative path and absolute path?

A. Absolute path-- Exact path from root directory.
Relative path-- Relative to the current path. Q. What is a data register and address register?

A. Data registers - can be assigned to a variety of functions by the programmer. They can be used with
any machine instruction that performs operations on data.
Address registers - contain main memory addresses of data and instructions or they contain a portion
of the address that is used in the calculation of the complete addresses.