Jio Software Developer Interview Questions, Process, and Tips

Round duration - 60 Minutes
Round difficulty - Medium

It was an online exam , window was open for 24 hrs.

Round duration - 60 Minutes
Round difficulty - Hard

Given multiple problems, have to find an optimized solution for the problem statements.

Q1. What are the best practices for building a product in system design?
Ans. 
Best practices for building a product in system design include defining requirements, modular design, scalability, testing, and monitoring.
• Define clear requirements and goals before starting the design process.

• Use modular design to break down the system into smaller, manageable components.

• Design for scalability to ensure the system can handle increased load or users.

• Implement thorough testing at each stage of developme...read more
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Round duration - 30 Minutes
Round difficulty - Easy

DSA and javasciript questions

Q1. Questions on closure, javascript event loop, promises, async await, callbacks,
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Q1. Why looking for job change?
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Q1. What are the storage classes in C.
Ans. 
C has four storage classes: auto, register, static, and extern.
• Auto: default storage class for local variables

• Register: stores variables in CPU registers for faster access

• Static: retains value between function calls

• Extern: used to access global variables across multiple files
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Q2. How does static and extern differ from one another
Ans. 
Static and extern are storage classes in C/C++ with different functionalities.
• Static variables have a local scope but retain their value between function calls.

• Extern variables are declared outside a function and can be accessed by other files.

• Static functions can only be called within the same file they are declared in.

• Extern functions are declared in one file and can be used in other files.

• Static classes and function...read more
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Q3. How you can send one file from one system to another using C program?
Ans. 
Use sockets to establish a connection between two systems and transfer the file using file I/O operations.
• Create a socket on the sender system using socket() function.

• Bind the socket to a port using bind() function.

• Establish a connection to the receiver system using connect() function.

• Open the file to be transferred using fopen() function.

• Read the file contents using fread() function.

• Send the file contents using send()...read more
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Q4. What is half duplex and full duplex ?
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Q5. What is serial protocol?
Ans. 
Serial protocol is a communication protocol used to transmit data between devices one bit at a time.
• Serial protocol is used in many applications such as RS-232, SPI, I2C, and USB.

• It is a simple and reliable way to transmit data over a long distance.

• Serial protocol can be synchronous or asynchronous.

• It is commonly used in embedded systems and communication between microcontrollers and sensors.
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Q6. Write a program to store data in a file block by block, each block containing 100 bytes. Reserve first 4 bytes for reading index, second four bytes for writing index. Here index is the block index which is...read more
Ans. 
Program to store data in file block by block with 100 bytes per block and first 4 bytes for reading index and second 4 bytes for writing index.
• Use file handling functions to read and write data to file

• Use a loop to write data block by block

• Use a counter to keep track of block index

• Use bitwise operators to extract index from first 4 bytes
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