Interview Questions - Asked by different companies

TechnoSoft Solutions

1. FYP
2. WCF services
3. How to secure WCF?
4. What is Web services?
5. Abstract classes and interfaces (if we have 4 abstract methods. what is good? why we need two different approach. If I don't need multiple inheritance)
6. Abstraction (How it difference from C string library. In which we also call methods)
7. Difference between abstraction and encapsulation?
8. HTML table code (first columns were merge)
9. Find sum of max and second max in an array?
10. Join (inner or outer)
11. How garbage collector call and works?
12. Session handling in back-end
13. Strong points of yours
14. Weak points of yours
15. .net latest versions (.net, mvc, asp)
16. Unsafe code?
17. CLR
18. JIT
19. data types in C#
20. difference between primitive and reference type
21. float size
22. decimal size
23. yield keyword in C#
24. usafe code in C#
25. how to prevent class for inherit further
26. LINQ query
27. WCF services
28. array sort method use which algorithm
29. Data validation through data annotation
30. how to apply password match data annotation
31. Asyncronious call
32. data annotaion library name
33. Linq query for joins
34. IEnumeriable and Iqueryable
35. Task class in C#
36. viewBag, ViewData, TempData
37. LifeCycle of tempData
38. seed in entity framework
39. join (left or right)
40. code first approach function name
41. jQuery selector
42. two linked list intersect each other find point of intersection
43. find loop in linked list
44. 31 * 29 in mind
45. a frog fell into well, well has 30 stairs. He daily climb 4 stairs and fall 3 stairs. How many days he came out of well
46. Lahore to Karachi 20 telephone exchange one telephone exchange is damage find damage telephone exchange
47. can wcf service have different type of end points
48. in a from if the student select he is graduating than institute field become required through data annotation?
49. database schema(folder has folders + files and so on)

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Northbay Solutions

1. encapsulation
2. Composition & Aggregation ?
3. abstraction
4. abstract classes vs interfaces
5. can we use access identifier in interface?
6. overloading and overriding
7. there is another overloading which is? (operator overloading)
8. what is operator overloading?
9. deep copy/shallow copy
10. when content of an object change in deep copy does other also change?
11. All sorting algorithms & When to use which ?
12. Best sorting algorithm?
13. time complexity of best case of bubble sort?
14. which sorting algo is best in average case?
15. what is meant by space complexity?
16. database optimization (how many steps? usually we go through how many steps?)
17. advantages and disadvantages of normalization?
18. relational algebra in db?
19. Context Switching?
20. paging
21. deadlock conditions
22. two ropes problem. one rope burn in 60 minutes calculate 45 minutes from 2 ropes?
23. Divide cube into 8 pieces with 3 cuts?
24. produce 0,1,2,3,4,5,6,7 from rand5() function. each number should have equal probability?
25. input: My name is Furqan.
26. output: Furqan is name my.  (write program)
27. FYP

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Rolustech Dynamic IT Solution

1. composition vs aggregation vs association 
2. static binding, dynamic binding
3. overloading, overriding
4. static variable
5. abstract classes vs interfaces
6. what is necessary for a class who implements interface 
7. swap two variables without using anyother variable
8. find second maximum from an array
9. database join query
10. Android:
11. FYP
12. activity vs fragment
13. list View
14. adapter
15. layouts
16. web services
17. intent