TCS-Technical Interview Questions:

•What is static variable?
•What does a pointer mean?
•What is a structure?
•What are the differences between structures and arrays?
•In header files whether functions are declared or defined?
•What are the differences between malloc() and calloc()?
•What are macros? what are its advantages and disadvantages?
•Difference between pass by reference and pass by value?
•What is static identifier?
•Where are the auto variables stored?
•Where does global, static, local, register variables, free memory and C Program instructions get stored?
•Difference between arrays and linked list?
•What are enumerations?
•What is a class?
•What is an object?
•What is the difference between an object and a class?
•What is the difference between class and structure?
•What is public, protected, private?
•What are virtual functions?
•What is friend function?
•What is a scope resolution operator?
•What do you mean by inheritance?
•What is abstraction?
•What is a data structure?
•What does abstract data type means?
•Evaluate the following prefix expression ” ++ 26 + – 1324″ (Similar types can be asked)
•Convert the following infix expression to post fix notation ((a+2)*(b+4)) -1 (Similar types can be asked)
•How is it possible to insert different type of elements in stack?
•Stack can be described as a pointer. Explain.
•Write a Binary Search program
•What is the difference between an Abstract class and Interface?
•What is user defined exception?
•What do you know about the garbage collector?
•What is the difference between java and c++?
•In an HTML form I have a button which makes us to open another page in 15 seconds. How will you do that?
•What is the difference between process and threads?
•What is update method called?
•Have you ever used HashTable and Directory?
•What are statements in Java?
•What is RMI?
•Explain about RMI Architecture?
•What are Servelets?
•What is the use of servlets?
•Explain RMI Architecture?
•How will you pass values from HTML page to the servlet?
•How do you load an image in a Servelet?
•What is purpose of applet programming?
•How will you communicate between two applets?
•What are the basic functions of an operating system?
•Explain briefly about, processor, assembler, compiler, loader, linker and the functions executed by them.
•What are the difference phases of software development? Explain briefly?
•Differentiate between RAM and ROM?
•What is DRAM? In which form does it store data?
•What is cache memory?
•What is hard disk and what is its purpose?
•Differentiate between Complier and Interpreter?
•What are the different tasks of Lexical analysis?
•What are the different functions of Syntax phase, Scheduler?

If you are a Electronics student some topics are suggested for you to be asked at the time of interview.Prepare the subject well but do not go so deep,but keep overview of all subjects.

•  Digital electronics basic
•  Diodes basic
•  Terms like amplifier, IC, filter (only the basic information)
• Some basics of C/C++
•  Difference between 8085 and 8086
• Communication basics
•  How does 1G, 2G, 3G, GSM, CDMA etc just basics
•  What is OSI layer model
•  What is LAN, WAN, MAN
•  Tell about Router and Topologies, TCP/IP model.

Some questions asked to Electronics Students during Technical Interview at Campus Recruitment in Jabalpur – 2011:

• What is MOSFET
• What is LCS
• What is LED TV
• Differentiate between LCD,LED and PLASMA.
• Explain working of an LCD and PLASMA TV.
• Draw the diagram of MOSFET
• What is norton’s theorem
• What is mobile communication
• Working of keypad in a mobile unit
• Call-generation through a mobile
• In a mobile how does * and # works or what is its use
• Explain LED.
• What is MATLAB