Basic Interview questions on Computer Science subject.

Basic questions asked to Computer Science student in the Job Interview or Group Discussion / Personal interview. 

• What is the advantage of Win NT over Win 95?
• Explain polymorphism and inheritance. Give real life example.
• What is gate way used for?
• How is linked list implemented?
• What is semaphore?
• In binary search tree which traversal is used for getting ascending order values?
• What are Device drivers used for?
• Explain fork as applied in Unix?
• In Unix, what does profile contain?
• In Unix, what is echo used for?
• In Unix, where does "IS" store contents?
• How is relocatable code generated in an assembler?
• What does 'calloc' do? How is it different from 'malloc'?
• What is the scope of a global variable that is declared as static?
• How many flip-flops do you require for modulo 19 counter?
• A ring counter's initial state is 01000. After how many clock cycles will it return to the initial state?
• Explain virtual functions in C++?
• What is the number of address lines required for 1-MB memory?
• What is the minimum number of IP addresses required for a router?
• What are disadvantage of pcm?
• Explain the Shannon Hartley theorem?
• What is microwave propagation along the curvature of earth called?
• What is used for knowing its own IP address?
• Write a program to swap two variables without using a temporary variable.
• Write a program for reversing the given string.
• Write a C program to find whether a stack is progressing in forward or reverse direction.
• Write a C program that reverses the linked list.
• Define function. Explain function arguments.
• C passes by value or by reference?
• Difference between my-stropy and stropy?
• What does a compiler do?
• How much information can be stored in 1 byte of an IBM pc compatible?
• What is the language used for Artificial Intelligence?
• What is piggy backing?
• Explain the difference between micro kernel, and macro kernel.
• Give an example of micro kernel.
• What is a real-time system?
• What is the difference between Hard and Soft real-time systems?
• What is mission critical system?
• What is the important aspect of a real-time system?
• What is software life cycle?
• What are the differences between Pascal and C?
• Which are the different computer architectures?
• What is the requirement in MIMD?
• What is the difference between RISC and CISC processors?
• What is the difference between loosely coupled and tightly coupled systems?
• What is an open system?
• Which are the different phases in software life cycle?
• How much time is spent usually in each phase and why?
• Why is analysis and testing phases very important?
• What is testing?
• Which are the different types of testing?
• What is unit testing, integration testing etc?
• Have you worked in Windows? What is the difference you have seen from a DOS environment?
• How does Win Main look like?
• How are the messages processed in Windows?
• Have you done any network programming?
• Why networks are layered? What is the advantage of that?
• How many layers are there in OSI?
• Are you familiar with network topologies?
• Which are the different network topologies?
• Give an example of bus type network.
• What is the band width of Ethernet?
• Explain the advantage and disadvantage of Ethernet.
• Which is the protocol used in Ethernet?
• Can all recursive programs be written iteratively?
• What should you do to ensure that one program doesn't corrupt another program in a multi-program environment?
• What is SQL?
• What's the advantage of SRAM over DRAM?
• What is method used for disk searching?
• Which feature does C++ have that C does not have?
• What is the difference between synchronous and asynchronous transmission?
• What does quality factor indicate?
• What is difference in IRET and RET statements of 8086?
• What is the difference between C and C++?
• What is the purpose of hashing?
• Define avalanche diode multiplication?
• What is coupling?
• What does CONNECT BY mean?
• What is DHCP used for?
• Explain Codd's rule related to database?
• What is RSA?
• What is the use of global static variable in C?
• Define functional dependency.
• What is the command to initiate the Windows?
• In Unix, how does inter process communication take place?
• Which was the first super computer built in India?
• Whose product is Power PC 89? What is meant by QUEUE?
• What is meant by STACK?
• What is the difference between 80286 and 80287?
• What is meant by recursion?
• What is the difference between Macro and ordinary definition?
• What is the difference between Class and Structure?
• Describe VRTX in a few words.
• How does the scheduler know the time when it should be scheduled?
• What is deadlock? How do you avoid it?
• What is runtime locatable code?
• What is volatile register definition in C?
• How is semaphore variable different from variable?
• What is Dynamic allocation?
• Give the difference between monolithic and microlithic kernel.
• In Unix what is the difference between select and poll?
• What is a finite Automata?
• What is Turning machine?
• What is binary search, traversal, hashing etc?
• What is waterfall model, prototype model etc?
• What is indexing in databases?
• What is atomicity?
• Write recursive programs to calculate factorial in C++.
• What is the best data structure to store the process information in a real time operating system?
• What is a semaphore?