When a program forks and the child finishes before the parent, the kernel still keeps some of its information about the child in case the parent might need it ? for example, the parent may need to check the child?s exit status To be able to get this information, the parent calls `wait()?; In the interval between the child terminating and the parent calling `wait()?, the child is said to be a `zombie? (If you do `ps?, the child will have a `Z? in its status field to indicate this)
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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