Arista Networks Softwaretest Engineer Interview Questions and Answers

Dsa round on hackerrank

Q1. Dsa and technical round
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Q2. Tree transversal
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Very good but easy
easy question long question

Q1. Java codingg on sql programming
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Q2. Colection framework java concept
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Q1. Data structure algorithm questions related to various scenarios
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Q2. DS Algo related questions which revolved around different scenarios
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Difficult online round

Q1. Arrays from neetcode
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Arrays are a collection of strings in programming used to store multiple values under a single variable name.
• Arrays are declared using square brackets []

• Each element in an array is accessed by its index, starting from 0

• Example: var fruits = ['apple', 'banana', 'orange']
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Q2. Linked list from neetcode
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Q1. Trees in neet code
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Trees in neet code refer to the implementation of tree data structures in coding challenges on the platform NeetCode.
• Trees are a common data structure used in coding challenges to represent hierarchical relationships between data.

• Common tree operations include traversal (inorder, preorder, postorder), insertion, deletion, and searching.

• Examples of tree-related coding challenges on NeetCode include implementing a binary...read more
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Q2. Trees in leet code
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Trees in leetcode are a common topic for coding interviews, involving various tree traversal and manipulation techniques.
• Understand different tree traversal methods like inorder, preorder, and postorder.

• Learn about common tree algorithms like finding the height, diameter, and lowest common ancestor.

• Practice solving tree-related problems on leetcode to improve your skills.
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Q1. Java basics , oops , spring
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Q1. Manger round basics behavior
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Q1. Find the min and max from List of Integers using java 8 streams.
Ans. 
Find min and max from List of Integers using Java 8 streams.
• Use the `stream()` method on the List to create a stream of integers.

• Use the `min()` method to find the minimum value.

• Use the `max()` method to find the maximum value.
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Q2. Find 2nd largest element using java 8 streams from list of integers.
Ans. 
Find 2nd largest element using Java 8 streams from a list of integers.
• Sort the list of integers in descending order using streams.

• Skip the first element to get the second largest element.
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Q3. Given a Product class and some ArrayList data Find which products has price greater than 200 using java 8 streams?. Find which products having maximum price?
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Q4. Increase a value of List of Integers by *2 and written new list.
Ans. 
Increase the values of a list of integers by 2 and create a new list.
• Iterate through the list of integers

• For each integer, add 2 to its value

• Create a new list with the updated values
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Q5. What are the java new features?
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Java has introduced several new features in recent versions.
• Java 8 introduced lambda expressions, which allow for functional programming.

• Java 8 also introduced the Stream API for processing collections of data.

• Java 9 introduced the module system, which provides better encapsulation and modularity.

• Java 10 introduced local variable type inference, allowing the omission of explicit type declarations.

• Java 11 introduced the...read more
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Q6. @Components vs @Repository
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The @Component and @Repository annotations are used in Spring Framework for different purposes.
• Both annotations are used to define beans in the Spring container.

• @Component is a generic stereotype annotation for any Spring-managed component.

• @Repository is a specialization of @Component used for DAO classes.

• The @Repository annotation provides additional exception translation for data access exceptions.

• Using @Repository i...read more
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Q7. @SpringBootApplication
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Q8. @Entity explain?
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The @Entity annotation is used in Java to mark a class as an entity, which represents a table in a relational database.
• The @Entity annotation is part of the Java Persistence API (JPA) and is used in object-relational mapping (ORM) to map Java objects to database tables.

• It is typically used in conjunction with other JPA annotations like @Table, @Column, and @Id.

• The @Entity annotation is used to define the entity name, s...read more
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Q9. How the database is configure?
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The database is configured by setting up the necessary parameters and configurations to ensure proper functioning and performance.
• Database configuration involves defining the database schema, tables, and relationships.

• It includes setting up indexes and constraints for data integrity.

• Configuring database security measures like user access control and permissions.

• Tuning database performance by optimizing query execution ...read more
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Q10. What is Dockerfile?
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Dockerfile is a text file that contains instructions to build a Docker image.
• Dockerfile is used to automate the creation of Docker images.

• It specifies the base image, dependencies, environment variables, and commands to run.

• Each instruction in the Dockerfile creates a new layer in the image.

• Dockerfile can be version controlled and shared to ensure consistent builds.

• Example: FROM ubuntu:latest RUN apt-get update && apt-...read more
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Q11. Explain CI CD and your project deployment.
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CI/CD is a software development practice that enables frequent and automated code integration, testing, and deployment.
• CI/CD stands for Continuous Integration and Continuous Deployment.

• It involves automating the process of integrating code changes, running tests, and deploying the application.

• CI/CD helps in reducing manual errors, improving code quality, and increasing development speed.

• Tools like Jenkins, GitLab CI/CD...read more
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Q12. What is mutable classes in java? How to create?
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Mutable classes in Java are classes whose state can be modified after creation.
• Mutable classes allow changing their internal state

• They can have mutable fields or methods that modify their state

• To create a mutable class, define fields with non-final modifiers

• Provide public methods to modify the state of the class
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Q1. Yet to sChedule
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Q1. What is tuple and list
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Tuple and list are data structures in Python. Tuple is immutable and ordered, while list is mutable and ordered.
• Tuple is immutable, meaning its elements cannot be changed after creation

• List is mutable, meaning its elements can be changed after creation

• Tuple is ordered, meaning it maintains the order of elements

• List is ordered, meaning it maintains the order of elements

• Example of tuple: (1, 2, 3)

• Example of list: [1, 2,
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