Different question and answers for the post of Assistant Programmer

Question : What is Traceability  matrix?



Answer : Traceability matrix is a documents which define or shown the relationship between the test cases and requirements and also shown the requirements proposed by the clients and their traceability in a single documents.

Question : how many layers in the OSI model and what are they?

Answer : There are 7 layers in the OSI model and they are :
       
           

           

               1.Application layer
               2.Presentation layer
               3.Session layer
               4.Transport layer
               5.Network layer
               6.Data Link Layer
               7. Physical layer

           





Question : What is a protocol?       

Answer : Protocol is a special set of rules to communicate with two network devices.

Question : What is a tautology in truth tables?
Answer : Construct a truth table for the formula . A tautology is a formula which is "always true" --- that is, it is true for every assignment of truth values to its simple components. You can think of a tautology as a rule of logic. The opposite of atautology is a contradiction, a formula which is "always false".


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