Zidio Development Software Trainee Intern Interview Questions and Answers

Q1. About the project that I have worked
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Q2. Technical Experience
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Q1. Databinding in android
Ans. 
Databinding in Android allows for easier connection between UI components and data sources.
• Databinding eliminates the need for findViewById() calls in your code.

• It allows for easier access to data in your layouts using data binding expressions.

• Databinding can improve code readability and reduce boilerplate code.

• Example:
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Q2. What is the packaging process in android
Ans. 
Packaging process in Android involves compiling the code, resources, and assets into an APK file for distribution.
• Compile the Java code into .class files

• Compile the resources (XML files, images, etc.) into a binary format

• Package all the compiled files into an APK file using the Android Asset Packaging Tool (AAPT)

• Sign the APK file with a private key for security

• Align the APK file for optimization
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Q3. What is an MVVM design pattern
Ans. 
MVVM is a design pattern that separates the user interface from the business logic and data model.
• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as an intermediary between the Model and View

• MVVM helps in achieving separation of concerns and easier unit testing
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Q1. Most of the question related to architecture and system design
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Q1. Face to face interview with director
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Aptitude questions with some basic coding questions

They have given 3 coding questions and some pseudo codings

Q1. Tell about your self
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Q2. Some coding questions
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Basic aptitude questions were asked of easy level.

Q1. Dbms , oops , C++ , sql , aws , powerpoint
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Aptitude questions were easy and basics

Q1. They asked about projects, SQL basics, oops concepts and about java concepts
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Q2. It was an easy and average interview
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Aptitude test was quite easy; it had normal intelligence questions as well as some math

The coding test consisted of 2 medium HackerRank questions in any language

Q1. I had a face-to-face virtual interview. The interview round went for 45 minutes. They asked all sort of questions, from JAVA to SQL to basic Python. Also, DSA questions were asked.
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Q2. Difference between Truncate, Delete and Drop
Ans. 
Truncate removes all rows from a table, Delete removes specific rows, and Drop deletes the entire table structure.
• Truncate is a DDL command that removes all rows from a table but keeps the table structure intact.

• Delete is a DML command that removes specific rows based on a condition.

• Drop is a DDL command that deletes the entire table structure along with all its data.

• Truncate is faster than Delete as it does not log in...read more
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Q3. Difference between Sets, Lists, Tuples
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Sets, Lists, and Tuples are all data structures in Python with different characteristics and use cases.
• Sets are unordered collections of unique elements. Example: {1, 2, 3}

• Lists are ordered collections of elements that can be modified. Example: [1, 2, 3]

• Tuples are ordered collections of elements that cannot be modified. Example: (1, 2, 3)
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Q1. Round 4 was another face-to-face interview with a senior.
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Q1. Modify the triger
Ans. 
Modify the trigger in the software system.
• Identify the current trigger functionality and the desired modification.

• Update the trigger logic or conditions as needed.

• Test the modified trigger to ensure it functions correctly.
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Q1. Hands on coding experience is must.
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Q2. Interviewers are itself not worthy of interviewing, some scrum master with below par knowledge interviewed me.
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Basic aptitude and reasoning questions. Along with one or two short coding questions

Q1. Questions based on your skills
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Q2. Questions based on your projects.
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Q3. Some general coding and technical questions which will show the skillset of the student
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Q1. General questions like why work here, will you give your best etc
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