Verizon Senior Devops Engineer Interview Questions and Answers for Freshers

Basic dsa and scalable scripting

Q1. Technical interview with the manager, just a flowy conversation
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Q1. Write a pipeline code for java project
Ans. 
Pipeline code for a Java project
• Use Jenkins or any CI/CD tool to create a pipeline for the Java project

• Define stages like build, test, package, deploy in the pipeline script

• Use tools like Maven or Gradle for building the project

• Integrate with version control system like Git for triggering the pipeline
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Q2. Write a python code to upload a content to s3
Ans. 
Python code to upload content to s3
• Use boto3 library to interact with AWS S3

• Create a S3 client using boto3

• Use the put_object method to upload content to S3
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Q1. Questions about python modules and syntaxes
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Q2. Questions on ansible modules and docker file
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Q1. Project discussion
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Q2. Difficulties faced on technical areas
Ans. 
Managing complex infrastructure configurations and troubleshooting issues with automation tools.
• Dealing with scalability challenges in cloud environments

• Troubleshooting issues with CI/CD pipelines

• Managing configuration drift in a large infrastructure

• Implementing security best practices in DevOps processes
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Q1. Salary discussion
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Q2. Process discussion
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Case study is quite practical based scenario

Q1. 1.Cannot mention interview question, but I was more on more hands on and production grade scenario.
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Q2. Scalibloty related to question
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Q1. Basic PHP Questions on Arrays, implode, explode function difference, include, require difference.etc
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Q2. Basics MySQL questions, asked some queries
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Q1. Asked questions based on payment gateway.
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Q1. Salary discussion, explained roles and responsibilities
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Q1. Technical Interview + Coding
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Q1. Technical Interview
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Q1. Find nth elements from last in linked list
Ans. 
Use two pointers to find the nth element from the end of a linked list.
• Use two pointers, one moving n steps ahead of the other

• When the first pointer reaches the end, the second pointer will be at the nth element from the end
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Q2. Difference between hashmap and concurrent hashmap
Ans. 
HashMap is not thread-safe while ConcurrentHashMap is thread-safe and allows concurrent access.
• HashMap is not thread-safe and can lead to ConcurrentModificationException if accessed by multiple threads simultaneously.

• ConcurrentHashMap allows concurrent access by multiple threads without the need for external synchronization.

• ConcurrentHashMap achieves thread-safety by dividing the map into segments, allowing multiple th...read more
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