100+ AWS Cloud Engineer Interview Questions and Answers

S3 is ideal for scalable, durable object storage, while EBS and EFS serve different use cases for block and file storage.

• S3 is designed for storing and retrieving any amount of data from anywhere on the web, making it ideal for static website hosting.

• EBS provides block storage for EC2 instances, suitable for databases and applications requiring low-latency access.

• EFS offers scalable file storage for use with multiple EC2 instances, ideal for shared file systems and applicatio...read more

DDOS attack is a malicious attempt to disrupt normal traffic of a targeted server or network by overwhelming it with a flood of internet traffic.

• DDOS stands for Distributed Denial of Service

• Attackers use multiple devices to send a huge amount of traffic to the target server or network

• It can cause the server or network to crash or become unavailable to legitimate users

• Prevention measures include using firewalls, load balancers, and DDOS mitigation services

Interview questions for AWS Cloud Engineer including Python basics, OOP concepts, and video editing skills.

• Differentiate between C and Python

• Rate yourself in Python

• Types of data types in Python

• Difference between list and tuple in Python

• Number of operators in Python

• Object-oriented programming concepts

• Example of inheritance in Python

• Polymorphism in Python

• Program to print even numbers from 0-100 in Python

• Video editing skills using CyberLink PowerDirector 15 Ultimate

NAT gateway is a managed service that allows instances in a private subnet to connect to the internet.

• NAT gateway acts as a gateway for instances in a private subnet to access the internet.

• It provides a public IP address to instances in the private subnet.

• It helps in controlling the inbound and outbound traffic for instances in the private subnet.

• It is used in scenarios where instances in a private subnet need to access the internet but do not have a public IP address.

• It is a...read more

DR stands for Disaster Recovery. It involves implementing strategies and procedures to ensure business continuity in the event of a disaster.

• DR is the process of preparing for and recovering from a disaster that affects the availability of IT infrastructure and services.

• It includes creating backup systems, replicating data, and establishing failover mechanisms.

• DR plans should be regularly tested and updated to ensure effectiveness.

• AWS provides various services like AWS Backup...read more

There are 3 availability zones in Mumbai and 2 in Hyderabad regions.

• Mumbai region has 3 availability zones named ap-south-1a, ap-south-1b, and ap-south-1c.

• Hyderabad region has 2 availability zones named ap-south-2a and ap-south-2b.

• Availability zones are distinct locations within a region that are engineered to be isolated from failures in other availability zones.

Transit Gateway is a service that simplifies network architecture by allowing customers to connect their VPCs and on-premises networks.

• Transit Gateway acts as a hub that connects multiple VPCs and VPN connections.

• It simplifies network management by reducing the number of VPN connections needed.

• It supports inter-region peering, allowing VPCs in different regions to communicate with each other.

• It also supports Direct Connect Gateway, which allows customers to connect their on-p...read more

To connect on-prem to VPC, use VPN or Direct Connect.

• Create a virtual private gateway in VPC

• Create a customer gateway on-premises

• Create a VPN connection or Direct Connect

• Configure routing tables to allow traffic between on-prem and VPC

EC2 instances in AWS have root devices for the operating system and block devices for additional storage.

• EC2 instances have a root device that contains the operating system and boot volume.

• Block devices are additional storage volumes that can be attached to EC2 instances.

• Block devices can be either EBS volumes or instance store volumes.

• EBS volumes are persistent storage volumes that persist independently from the life of an instance.

• Instance store volumes are temporary storag...read more

There are several types of EC2 instances available in AWS to cater to different computing needs.

• There are general purpose instances like t2, m5, and m6g.

• There are compute optimized instances like c5 and c6g.

• There are memory optimized instances like r5 and x1e.

• There are storage optimized instances like i3 and d2.

• There are GPU instances like p3 and g4.

• There are FPGA instances like f1.

• There are instances for high performance computing like hpc6.

• There are instances for networking...read more

Creating a Kubernetes Cluster involves setting up master and worker nodes, configuring networking, and deploying applications.

• Set up a master node by installing Kubernetes control plane components like kube-apiserver, kube-controller-manager, kube-scheduler, and etcd.

• Set up worker nodes by installing kubelet and kube-proxy.

• Configure networking using a CNI plugin like Calico or Flannel.

• Deploy applications using kubectl or Helm charts.

• Monitor and manage the cluster using tools ...read more

Cloud is a network of remote servers that provide on-demand computing resources and services.

• There are three types of cloud: Public, Private, and Hybrid.

• Public cloud is owned and operated by third-party providers, like AWS, Azure, and Google Cloud.

• Private cloud is dedicated to a single organization and is managed internally or by a third-party.

• Hybrid cloud is a combination of public and private cloud.

• Examples of cloud services include Infrastructure as a Service (IaaS), Platf...read more

CMD is used to provide default command to run when container starts, while ENTRYPOINT is used to provide the main command to run when container starts.

• CMD can be overridden by passing arguments during container run, while ENTRYPOINT cannot be overridden.

• CMD can be used multiple times in a Dockerfile, with only the last one taking effect, while ENTRYPOINT can only be used once.

• CMD is often used for providing default parameters or options to the main command specified in ENTRYP...read more

Yes, I have experience with other cloud native applications.

• I have experience with Microsoft Azure and Google Cloud Platform.

• I have worked on deploying and managing applications on these platforms.

• I am familiar with the different services offered by these platforms and their pricing models.

• For example, I have used Azure App Service to deploy web applications and Google Cloud Storage for storing and retrieving data.

AWS services are a collection of cloud computing services provided by Amazon Web Services. EC2 instances are virtual servers in the cloud. S3 buckets are storage containers for data. Link validation of S3 bucket ensures data integrity and security.

• AWS services are a collection of cloud computing services provided by Amazon Web Services.

• EC2 instances are virtual servers in the cloud that can be easily scaled up or down based on demand.

• S3 buckets are storage containers for data...read more

To create a CI/CD pipeline, you need to define the steps for continuous integration and continuous deployment.

• Set up version control system (e.g. Git)

• Choose a CI/CD tool (e.g. Jenkins, CircleCI)

• Define build, test, and deployment stages

• Automate the process with scripts or configuration files

• Integrate with monitoring and alerting tools for feedback

I am familiar with various AWS services including compute, storage, databases, and networking solutions.

• EC2 (Elastic Compute Cloud) for scalable virtual servers.

• S3 (Simple Storage Service) for object storage and data backup.

• RDS (Relational Database Service) for managed relational databases like MySQL and PostgreSQL.

• Lambda for serverless computing and event-driven applications.

• VPC (Virtual Private Cloud) for creating isolated network environments.

Integrating Jenkins with Github allows for automated build and deployment processes.

• Install the Github plugin in Jenkins

• Create a new Jenkins job and link it to the Github repository

• Set up webhooks in Github to trigger Jenkins builds

• Configure Jenkins to pull code from Github and run build scripts

• Monitor build status and view logs in Jenkins dashboard

I have 5 years of experience working with AWS cloud services.

• 5 years of hands-on experience with AWS cloud services

• Proficient in setting up and managing EC2 instances, S3 storage, and VPCs

• Experience with AWS Lambda, RDS, IAM, and CloudFormation

• Worked on designing and implementing scalable and cost-effective cloud solutions

• Certified AWS Solutions Architect

EC2 is a virtual server in AWS, S3 is a storage service, subnets are network partitions, and internet gateway is a connection to the internet.

• EC2 is a virtual server that can be used to run applications and services

• S3 is a storage service that allows you to store and retrieve data

• Subnets are network partitions that allow you to segment your network

• Internet Gateway is a connection to the internet that allows your instances to communicate with the internet

IAM (Identity and Access Management) is used to securely control access to AWS services and resources.

• IAM allows you to create and manage users, groups, and roles to control who can access specific resources.

• It helps in setting permissions for users to access AWS services and resources.

• IAM enables you to set up multi-factor authentication for added security.

• It allows you to create and manage policies to define permissions for different users or groups.

• IAM helps in auditing an...read more

I have 5 years of experience in cloud and DevOps.

• 5 years of hands-on experience in designing, implementing, and managing cloud infrastructure on AWS

• Proficient in using DevOps tools like Jenkins, Docker, Kubernetes, and Terraform

• Experience in automating deployment processes, monitoring systems, and ensuring scalability and reliability

• Worked on projects involving CI/CD pipelines, infrastructure as code, and containerization

• Certifications like AWS Certified Solutions Architect o...read more

To terminate an instance, use the EC2 console or CLI. To delete an S3 bucket, use the S3 console or CLI.

• To terminate an instance using the EC2 console, select the instance and click on 'Actions' > 'Instance State' > 'Terminate'.

• To terminate an instance using the CLI, use the 'terminate-instances' command.

• To delete an S3 bucket using the S3 console, select the bucket and click on 'Delete'.

• To delete an S3 bucket using the CLI, use the 'delete-bucket' command.

Snapshot is a copy of an EBS volume at a point in time. Elastic IP is a static, public IPv4 address that can be associated with an instance.

• Snapshots are used for backup, disaster recovery, and migrating data between regions.

• Elastic IP allows an instance to maintain the same public IP address even if it is stopped and started again.

• Elastic IP can be associated with a network interface or a NAT gateway.

No, files cannot be directly stored in S3 Glacier

• S3 Glacier is designed for long-term archival storage of data

• Files must first be stored in S3 Standard or S3 Infrequent Access before transitioning to Glacier

• Transitioning to Glacier incurs additional costs and retrieval times

RESTful APIs enable communication between clients and servers using standard HTTP methods and status codes.

• REST stands for Representational State Transfer, a software architectural style.

• Uses standard HTTP methods: GET (retrieve), POST (create), PUT (update), DELETE (remove).

• API key is a unique identifier used to authenticate requests to an API.

• Common HTTP status codes include 200 (OK), 404 (Not Found), 500 (Internal Server Error).

• Example of an API key: '12345-abcde-67890-fgh...read more

Cloud computing involves various tasks like deployment, management, security, and optimization of cloud resources.

• Deployment of applications on cloud platforms (e.g., AWS, Azure).

• Management of cloud resources, including scaling and monitoring.

• Ensuring security and compliance of cloud environments.

• Cost optimization and budgeting for cloud services.

• Data backup and disaster recovery planning.

• Integration of cloud services with on-premises systems.