Aricent Interview of Monika Bisla

Written exam was same for all. For details regarding written, click here.

Interview
My interview started with my resume. The interviewer had a look at my resume and asked about my recent projects. I told him briefly.

Then he started with C questions like

• What will happen in this code :

main()
{
        main();
}

I replied with Segmentation Fault. Then he asked what is a segmentation fault? In which conditions segmentation fault can occur?

• Which loops are used in C language? Difference between while and do-while?
• Types of storage classes in C? Difference between auto, static, extern and global variables. What is their scope and where do they get stored in memory.
• How can we write structures in a text file and then retrieve it?
• Fopen and Fclose commands in C,  how they are implemented?
• OOPS concepts, What is polymorphism and types of polymorphism? What is function Overloading?
• Can we use sizeof() operator in #define preprocessors? If not, why?

After this he switched to Software Engg.

• SDLC(S/w develoopement life-cycle.)
• Various models? Why watrefall model is called waterfall? What is an Agile model?
• When we do requirement analysis, which is the most basic step?
• What is RISK? How do we do risk management? (he also asked, “Is joining Aricent a Risk”? :))
• What are various kind of testings? Unit Testing , Integration Testing, Regression Testing?
• When do we do all these testings during developement of software?

Switching to Operating Systems,

• How do we implement Cache?
• What is purging?
• What is a page fault? How do we handle it?
• What is a deadlock? Give an example.

After this, he asked about difference between Stack and queues and their applications? Which data structure do we use for recursion? Why stack is used for recursion?

Starting with Computer Networks,

• What is the difference between TCP and UDP? where are they used?
• Layers of ISO model, protocols used in application layer and transport layer.
• What is the difference between packet switching and circuit Switching? TCP and UDP use what?
• What is difference between http and https?
• Port number of FTP, HTTP?
• What is difference between a switch and a router? In which layer they are implemented? What are L2 and L3 switches?
• What is a VPN? Is it implemented using internet?
• What is VLAN?
• How do we implement a WAN?
• What is GSM? How it is implemented? Is it used for voice or data or both?
• What is GPRS? how it is implemented? Can we send voice packets on GPRS?

That's it. 

Overall, he covered all the topics.