Pen questions from a software company

Pen questions of a company:

1. Briefly describe the basic features of OO in C ++.

2. int A [3] = {1, 2, 3}; int B = sizeof (a)/sizeof (A [0]); B = ?; Or: char * s = "hello"; sizeof (S) =? Strlen (S) =?

3. Why is the Windows window square rather than a circle?

4. In C ++ programs, if there is polymorphism, why is it generally slower than not using polymorphism?

5. How many stages are involved in the software development process? Which stage is the most important?

6. What types of relational databases do you know? Why is OODB not popular?

7. Why can Java programs be cross-platform ?. Net?

8. A server: 16 CPU/8 GB memory/WindowsXP. What is the maximum memory available for applications?

9. is a multi-threaded program faster than a single thread? Why?

10. How can I exchange the values of Two integer variables?

11. What is transaction processing in the database?

12. If the value of an address in the memory is 0x1000 and the value of 1 is 0x01, what is the integer corresponding to the address?

13. How can I estimate the workload of a software project?

14. Suppose there is a problem with the program of a foreign customer. How do you solve this problem?

15. What do you think of Microsoft?