Veritas Technologies Interview Question

Technical Interview1: OS: 1.What is OS? 2.What is difference between process and thread? 3.Process Life-Cycle? 4.Virtual Memory and Demand Paging? 5.Difference between Mutex and Semaphore? 6.What is thrashing? 7.Belady's Anomaly and types of scheduling processes? 8.Realtime scenarios of OS were given, interviewer was asking about what will happen at this stage?Whether it will generate trap or system will hang a while or it will ignore the issue? DSA: 1.Write code on Insert node after given position in doubly linked list? 2.Remove duplicates in String?(Focus was on Complexity) 3.Find which bits are set in given number? 4.Find whether specified bit is set or not in given number? 5.Find o/p questions(operator precedence)? 6.Properties of Binary Tree? C&C++: 1.What do you mean by storage classes in C and their types? 2.What is union and difference between union and structure?Real time use of union and structure? 3.General overview of Object orientation? Technical Interview2: No questions on OS DSA: Compilable code on 1.Binary Traversals- Preorder and Inorder(iterative as well as recursive)? 2.Stack reverse with temporary as well as recursion? 3.Find longest palindrome in given string? 4.find all palindromes in given string(Of all which I failed to implement correctly)? C&C++&JAVA: 1.Object oriented concepts(Virtual functions, Friend functions,Scope resolution) 2.Why multiple inheritance is not supported in JAVA? 3.Difference between C and C++? Projects: 1.Only general overview of project(Hushh...God saved me!! Not the code again) 2.Project contribution and unique thing in project you implemented? Puzzles: 1.Lot of puzzles, but was frequently asked. HR Interview: 1.Tell me about yourself? 2.Why Veritas? 3.Family background? 4.Further studies(MS or M.tech)? 5.Strengths and weaknesses? 6.What you expect from Veritas? 7.Do you have any question for us?(Fixed one..So prepare and study well the company website)