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
More questions
1. In the relational model, relationships between relations or tables are created by using:
Correct Answer: Object Repository means not a collection of objects it's a common repository for all the people (testing, developers) for seeing all the data in single login for example QA wants to see 5 testers works then he goes to each person login and see the data It's very difficult job for this we can use Object Repository
Correct Answer: The OSI Model is used as a reference model The primary reason the OSI model was created was so that different networks could inter-operate Hence, different networks could communicate