PTC Software Developer interview questions

1. Intro 2. Which language do you like and would like to work on.(c and Java) 3. what is difference between abstraction and encapsulation .give example 4. what is threading? where is it used ? give example 5. On which platform have you done your academic projects.(java jsp and servlet) 6. Draw jsp and servlet lifecycle and explain 7. How can you load one webpage on existing webpage 8. will <mytag>hello</mytag> compile (html) and why? 9. some queries of database and diffrence between joins and their use 10. what is difference between dbms and rdbms