30+ Cloud Engineer Interview Questions and Answers for Freshers

Query to find employees with middle name 'Mohan' and salary over 2 lac.

• Use SELECT statement to retrieve data from employee table

• Use WHERE clause to filter employees with middle name 'Mohan' and salary over 2 lac

• Example: SELECT * FROM employee WHERE middle_name = 'Mohan' AND salary > 200000

I would use analogies and simple language to explain technical concepts to non-technical people.

• Use analogies to relate technical concepts to everyday experiences

• Avoid using technical jargon and use simple language

• Provide visual aids such as diagrams or flowcharts

• Encourage questions and feedback to ensure understanding

• Use real-life examples to illustrate technical concepts

Count common elements in two lists

• Iterate through both lists and count occurrences of each element

• Use a dictionary to store counts of elements in both lists

• Return the common elements and their counts

Cloud computing is the delivery of computing services over the internet.

• Cloud computing allows users to access and use computing resources on-demand, such as storage, processing power, and software applications.

• It eliminates the need for physical infrastructure and provides scalability, flexibility, and cost-effectiveness.

• Examples include cloud storage services like Dropbox, cloud-based productivity tools like Google Docs, and cloud platforms like Amazon Web Services (AWS).

Developed a cloud-based data analytics platform using Python and AWS services

• Used AWS Lambda functions for serverless computing

• Implemented data processing pipelines with AWS Glue and S3

• Utilized Python libraries like Pandas and NumPy for data analysis

GIT is a version control system used for tracking changes in code. Push and pull are commands used to sync code between repositories.

• GIT is used to manage and track changes in code

• Push command is used to upload changes to a remote repository

• Pull command is used to download changes from a remote repository

• Other GIT commands include commit, branch, merge, and clone

• GIT is commonly used in software development to collaborate on code with multiple team members

I have worked on AWS services such as EC2, S3, RDS, Lambda, and CloudFormation for various use cases.

• EC2 - for hosting applications and websites

• S3 - for storing and retrieving large amounts of data

• RDS - for managing relational databases

• Lambda - for serverless computing and running code without provisioning or managing servers

• CloudFormation - for automating the deployment of infrastructure as code

Blob immutability refers to the characteristic of not being able to be modified once created. It is commonly used for storing data that should not be altered.

• Blob immutability ensures data integrity by preventing unauthorized changes

• It is commonly used for storing sensitive data like audit logs, financial records, and legal documents

• Drawbacks include the inability to update or delete data once it is stored

Blob is a type of data storage in Azure Storage, and blob tier is a way to manage the access and cost of storing blobs.

• Blob is a type of object storage in Azure Storage used for storing unstructured data.

• Blob tier in Azure Storage allows you to manage the access and cost of storing blobs by specifying the access tier (hot, cool, or archive).

• Hot access tier is for frequently accessed data, cool access tier is for infrequently accessed data, and archive access tier is for rarel...read more

Hierarchical namespace is a way of organizing data in a tree-like structure for easier management and access.

• Hierarchical namespace organizes data in a tree structure with parent and child relationships.

• It helps in categorizing and managing data efficiently.

• Examples include file systems where folders contain files, and DNS where domain names are organized hierarchically.

ZRS and GRS are redundancy options in Azure Storage for data durability and availability.

• ZRS (Zone-redundant storage) replicates data across multiple availability zones within a region for high durability and availability.

• GRS (Geo-redundant storage) replicates data to a secondary region, providing data redundancy across regions for disaster recovery.

• ZRS is suitable for scenarios requiring high availability within a region, while GRS is ideal for disaster recovery and data res...read more

The big cloud providers are Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform (GCP), and IBM Cloud.

• Amazon Web Services (AWS) - the most popular cloud provider with a wide range of services

• Microsoft Azure - offers a hybrid cloud solution and integrates well with Microsoft products

• Google Cloud Platform (GCP) - known for its machine learning and data analytics capabilities

• IBM Cloud - offers a variety of cloud deployment models and specializes in enterprise-level ...read more

SQL query to convert case to upper, Union and Union all, Decorators, Generators

• Use the UPPER() function in SQL to convert case to upper

• UNION combines the result sets of two or more SELECT statements

• UNION ALL also combines the result sets of two or more SELECT statements, including duplicates

• Decorators in Python are used to modify or extend the behavior of functions or methods

• Generators in Python are functions that return an iterator object

The coding round was challenging but I managed to complete it within the given time.

• The coding round consisted of multiple programming questions.

• I had to write code for various scenarios such as sorting, searching, and data manipulation.

• I used my problem-solving skills to come up with efficient solutions.

• I made sure to test my code thoroughly before submitting it.

• Overall, it was a good experience and I learned a lot from it.

The candidate is asked to write code for generating Fibonacci series and finding the second largest number in an array.

• For Fibonacci series, start with 0 and 1, then add the previous two numbers to get the next number in the series.

• To find the second largest number in an array, sort the array in descending order and return the element at index 1.

Types of storage accounts include Blob storage, File storage, Table storage, and Queue storage, each with specific use cases.

• Blob storage: used for storing large amounts of unstructured data like images, videos, and documents

• File storage: used for file sharing in the cloud, supports SMB protocol

• Table storage: used for storing structured NoSQL data

• Queue storage: used for reliable messaging between application components

IaaS, SaaS, and PaaS are cloud computing models that provide different levels of infrastructure, platform, and software services.

• IaaS (Infrastructure as a Service) provides virtualized computing resources over the internet, such as servers, storage, and networking.

• PaaS (Platform as a Service) provides a platform for developing, testing, and deploying applications without the need for infrastructure management.

• SaaS (Software as a Service) provides software applications over th...read more

Azure Active Directory is a cloud-based identity and access management service provided by Microsoft.

• Cloud-based identity and access management service

• Allows users to sign in and access resources

• Integrates with various Microsoft services like Office 365

• Provides single sign-on capabilities

• Supports multi-factor authentication

A resource group is a logical container in Azure that holds related resources for an application or solution.

• Resource groups help manage and organize resources in Azure.

• Resources within a resource group can be managed collectively, such as applying tags or permissions.

• Resource groups can be used to deploy, manage, and monitor resources as a group.

• Resource groups can span multiple regions and subscriptions.

• Deleting a resource group will also delete all resources within it.

VNet stands for Virtual Network in Azure. It allows you to securely connect Azure resources together.

• VNet is a representation of your own network in the cloud.

• It allows you to control your own IP address range, DNS settings, security policies, and route tables.

• You can connect VNets together, or connect an on-premises network to a VNet using VPN or ExpressRoute.

• VNets are isolated from each other to ensure secure communication.

• Azure resources like VMs, App Services, and databas...read more

OOPS (Object-Oriented Programming) concept is a programming paradigm based on the concept of objects.

• OOPS focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation, inheritance, polymorphism, and abstraction are key principles of OOPS.

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

• Inheritance allows one class to inherit properties and behavior from another class.

• Polymorphism enables objects to...read more

Pros and cons of cloud computing

• Pros: scalability, cost-effectiveness, flexibility, automatic updates

• Cons: security concerns, dependency on internet connection, potential downtime

Azure VM is a virtual machine offered by Microsoft Azure cloud computing platform.

• Azure VM allows users to create and manage virtual machines in the cloud.

• Users can choose from a variety of VM sizes and configurations based on their needs.

• Azure VMs can run Windows or Linux operating systems.

• Users can easily scale up or down their VMs based on demand.

• Azure VMs can be used for a wide range of applications, from development and testing to production workloads.

Opps in Java stands for Object-Oriented Programming concepts.

• Opps in Java refers to the principles of Object-Oriented Programming such as Inheritance, Encapsulation, Polymorphism, and Abstraction.

• It allows for creating modular, reusable, and maintainable code by organizing data and behavior into objects.

• Example: Creating classes and objects, using inheritance to create subclasses, and implementing interfaces.

SQL query to find duplicates in a table

• Use GROUP BY and HAVING clause to identify duplicates

• Select the columns you want to check for duplicates

• Use COUNT() function to count the occurrences of each group

My daily work procedure involves monitoring and maintaining cloud infrastructure, troubleshooting issues, and implementing new solutions.

• Check system logs and alerts for any issues

• Respond to any incidents or service requests

• Collaborate with development teams to deploy new applications

• Implement security measures to protect data and systems

• Perform regular backups and disaster recovery tests

Tools used in cloud computing for managing and deploying applications and infrastructure.

• Amazon Web Services (AWS)

• Microsoft Azure

• Google Cloud Platform (GCP)

• Docker

• Kubernetes

• Ansible

• Terraform

• Jenkins

• Git

• Nagios

There are three types of cloud: public, private, and hybrid.

• Public cloud: owned and operated by third-party providers, accessible to anyone with internet access.

• Private cloud: owned and operated by a single organization, used exclusively by that organization.

• Hybrid cloud: a combination of public and private clouds, allowing organizations to take advantage of the benefits of both.