Jio Interview Questions, Process, and Tips

Q1. What is DWDM and components used in DWDM?
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Q2. Difference between DWDM and CWDM?
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Q1. What is your current salary?
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Q2. What is your expectations?
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Q3. Why are you leaving current company?
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Q1. SOLID Principle
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Q2. Singlton is good or bed
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Q3. Concept of Closure
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Closure is a function that captures variables from its surrounding scope, allowing them to be accessed even after the function has finished executing.
• Closure allows functions to access variables from their parent functions even after the parent functions have finished executing.

• It helps in maintaining state in asynchronous operations.

• Example: A function returning another function that uses variables from the outer func
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Q1. Architecture based Question
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Q2. What is URLSession, Explain with code
Ans. 
URLSession is a class in iOS that allows you to make network requests and handle responses.
• URLSession is used to create tasks for fetching data from the internet.

• It supports various types of tasks such as data tasks, download tasks, and upload tasks.

• You can configure URLSession with URLSessionConfiguration to customize its behavior.

• Example: URLSession.shared.dataTask(with: url) { (data, response, error) in }
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Q3. What is codable?
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Codable is a protocol in Swift that allows for easy encoding and decoding of data types to and from external representations.
• Codable protocol is used to convert custom data types to and from external formats like JSON, plist, etc.

• It combines Encodable and Decodable protocols, making it easier to work with data serialization and deserialization.

• Example: struct Person: Codable { var name: String }

• Example: let jsonData =
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Q4. Array based program
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Program to manipulate an array of strings
• Use built-in array methods like push, pop, shift, unshift, splice for manipulation

• Iterate through the array using loops like for loop or forEach

• Use array methods like filter, map, reduce for more complex operations
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Time and work coding and decoding

Q1. Tall me sometime about yourself What is your Hobbies
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Q2. Tall me something about yourself
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Q1. Regarding your past experience and your ability to work under work pressure
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Q2. What do you know about jio and the services provided the customers
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General knowledge and telecom background questions and job description related

Q1. Why you want to change the job
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Q2. When will you join can you join immediately
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