Operating Systems - Interview Questions and Answers

For load-time dynamic linking: Load module to be loaded is read into memory. Any reference to a target external module causes that module to be loaded and the references are updated to a relative address from the start base address of the application module.

With run-time dynamic loading: Some of the linking is postponed until actual reference during execution. Then the correct module is loaded and linked.

With demand paging, a page is brought into memory only when a location on that page is actually referenced during execution. With pre-paging, pages other than the one demanded by a page fault are brought in. The selection of such pages is done based on common access patterns, especially for secondary memory devices.

Yes.

Page swapping or page replacements are called page cannibalizing.

1. Increased speed and memory capacity of microprocessors together with the support fir virtual memory and
2. Growth of client server computing

1. Hardware abstraction layer
2. Kernel
3. Subsystems
4. System Services.