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GlobalLogic Cloud Devops Engineer Interview Questions and Answers
23 Interview questions
Git rebase modifies the commit history while Git merge creates a new merge commit.
Git rebase rewrites the commit history by moving the entire feature branch to the tip of the master branch
Git merge creates a new merge commit that combines the changes from both branches
Rebasing is useful for keeping a linear commit history while merging is useful for combining multiple branches
Rebasing can cause conflicts if multip...
Jenkins pipeline automates the software delivery process by defining a set of steps and actions to be executed.
Pipeline is defined using a Jenkinsfile
Pipeline stages define the steps to be executed
Pipeline can include parallel stages and conditional steps
Pipeline can integrate with other tools like Git, Docker, and Kubernetes
Use 'docker exec -it <container_name> /bin/bash' to access a running Docker container's shell.
The command 'docker exec' allows you to run commands in a running container.
The '-it' flags are used to run the container in interactive mode with a terminal.
Replace '<container_name>' with the actual name or ID of your container.
Example: 'docker exec -it my_container /bin/bash' opens a bash shell in 'my_conta...
CMD and ENTRYPOINT are used to specify the command to run in a Docker container. ADD and COPY are used to add files to the container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing arguments to the docker run command.
ENTRYPOINT is similar to CMD, but it is not overridden by passing arguments to the docker run command. It is used to specify the main com...
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and distributes traffic based on content-based routing.
Network Load Balancer operates at the transport layer and distributes traffic based on IP protocol data.
Application Load Balancer is best suited for HTTP/HTTPS traffic, while Network Load Balanc...
CMD and ENTRYPOINT are used to specify the command to run in a Docker container. ADD and COPY are used to copy files into the container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing a command to docker run.
ENTRYPOINT is similar to CMD, but the command is not easily overridden. It is useful for creating a container that always runs the same command.
AD...
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and is used to distribute traffic to multiple targets based on the content of the request.
Network Load Balancer operates at the transport layer and is used to distribute traffic to multiple targets based on IP protocol data.
Application Load Balancer...
CMD and ENTRYPOINT are used to define the default command to run in a container. ADD and COPY are used to add files to a container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing a command to docker run.
ENTRYPOINT is similar to CMD, but it is not overridden by passing a command to docker run. It is used to define the main command that should be run in ...
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and distributes traffic based on content-based routing.
Network Load Balancer operates at the transport layer and distributes traffic based on IP protocol data.
Application Load Balancer is best suited for HTTP/HTTPS traffic, while Network Load Balanc...
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and is used to distribute traffic among multiple targets such as EC2 instances, containers, and IP addresses.
Network Load Balancer operates at the transport layer and is used to handle millions of requests per second while maintaining high throughpu...
GlobalLogic Cloud Devops Engineer Interview Experiences
2 interviews found
Anonymous
I appeared for an interview in Nov 2021.
(4 Questions)
Round duration - 50 Minutes
Round difficulty - Medium
This round was primarily focused on AWS and its applications like why and how do we use its different features and all.
- Q1. What are the different types of EC2 instances based on their costs?
- Ans.
Different types of EC2 instances based on costs include On-Demand Instances, Reserved Instances, and Spot Instances.
On-Demand Instances: Pay for compute capacity by the hour or second with no long-term commitments.
Reserved Instances: Reserved capacity for 1 or 3 years, offering significant discounts compared to On-Demand pricing.
Spot Instances: Bid on spare Amazon EC2 computing capacity, often available at a fraction o...
- Q2. What is Auto Scaling in AWS?
- Ans.
Auto Scaling in AWS is a feature that automatically adjusts the number of compute resources in response to changes in demand.
Automatically adjusts the number of EC2 instances based on traffic or performance metrics
Helps maintain application availability and reduce costs by scaling up or down as needed
Can be configured to scale based on CPU utilization, network traffic, or custom metrics
Example: Auto Scaling group can b...
- Q3. Can you explain Amazon EC2 in brief?
- Ans.
Amazon EC2 is a web service that provides resizable compute capacity in the cloud.
Amazon EC2 stands for Elastic Compute Cloud
It allows users to rent virtual servers on which to run their own applications
Users can choose from a variety of instance types with different CPU, memory, storage, and networking capacities
EC2 instances can be easily scaled up or down based on demand
Users only pay for the compute capacity they a...
- Q4. What is the use of lifecycle hooks in Auto Scaling?
- Ans.
Lifecycle hooks in Auto Scaling allow you to perform custom actions before instances launch or terminate.
Lifecycle hooks can be used to pause the instance launch process to perform custom actions, such as bootstrapping or configuration setup.
They can also be used to pause the instance termination process to allow for data backup or graceful shutdown.
By using lifecycle hooks, you can ensure that your instances are prope...
(7 Questions)
Round duration - 50 Minutes
Round difficulty - Medium
This round focused heavily on the fundamentals of Docker which was followed by some basic concepts from Git.
- Q1. What are Docker images?
- Ans.
Docker images are lightweight, standalone, executable packages that contain everything needed to run a piece of software.
Docker images are built from Dockerfiles, which specify the environment and dependencies needed for the software to run.
Images can be stored in Docker registries like Docker Hub for easy sharing and distribution.
Containers are created from Docker images and run as isolated processes on a host machine...
- Q2. What command can be run to import a pre-exported Docker image into another Docker host?
- Ans.
The command to import a pre-exported Docker image into another Docker host is 'docker load'.
Use the 'docker load' command followed by the file path of the exported image to import it into the new Docker host.
For example, 'docker load < exported_image.tar' will import the image from the file 'exported_image.tar'.
- Q3. What are Docker Namespaces?
- Ans.
Docker Namespaces are a feature in Docker that isolates containers from each other and the host system.
Namespaces provide a way to isolate processes, network, and filesystem for containers.
Examples of namespaces include PID (process IDs), NET (networking), and MNT (mount points).
Each container runs in its own set of namespaces, providing a level of isolation and security.
- Q4. What is the difference between CMD and ENTRYPOINT in a Dockerfile?
- Ans.
CMD specifies the default command to run when a container is started, while ENTRYPOINT specifies the executable to run when the container starts.
CMD can be overridden at runtime by passing arguments to docker run command
ENTRYPOINT cannot be overridden at runtime, but arguments can be passed to it using docker run command
CMD is often used for specifying the main application to run in the container
ENTRYPOINT is commonly ...
- Q5. Can you describe the lifecycle of a Docker container?
- Ans.
The lifecycle of a Docker container involves creation, running, pausing, stopping, and deletion.
Creation: Docker container is created from an image using 'docker run' command.
Running: Container is started and runs the specified application or service.
Pausing: Container can be paused using 'docker pause' command to temporarily stop its processes.
Stopping: Container can be stopped using 'docker stop' command, which halts...
- Q6. When should you use Git rebase or Git merge?
- Ans.
Git rebase is used to maintain a linear project history, while Git merge is used to combine branches.
Use Git rebase when you want to maintain a clean and linear project history.
Use Git merge when you want to combine branches while preserving the commit history.
Rebasing is useful for keeping feature branches up to date with the main branch.
Merging is useful for integrating changes from multiple branches into a single br...
- Q7. What do you know about git stash?
- Ans.
Git stash is a command in Git that temporarily shelves changes you've made to your working directory.
Git stash is used to save changes that are not ready to be committed yet.
It allows you to switch branches without committing changes.
You can apply the stashed changes later on using 'git stash apply'.
You can list all stashed changes with 'git stash list'.
You can remove stashed changes with 'git stash drop'.
(1 Question)
Round duration - 30 Minutes
Round difficulty - Easy
This was a typical HR round with some standard Behavioral questions.
- Q1. Can you tell me something about yourself?
Interview Preparation Tips
Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.
Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.
Skills evaluated in this interview
Interview Questionnaire
14 Questions
- Q1. AWS Services like Auto scaling groups,
- Q2. Load Balancer types , difference between application load balancer and network load balancer
- Ans.
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and is used to distribute traffic to multiple targets based on the content of the request.
Network Load Balancer operates at the transport layer and is used to distribute traffic to multiple targets based on IP protocol data.
Application Load Balancer supp...
- Q3. Route 53 routing policies
- Ans.
Route 53 routing policies determine how traffic is routed to your resources.
There are several routing policies available in Route 53, including simple, weighted, latency-based, geolocation-based, and failover.
Simple routing policy sends traffic to a single resource.
Weighted routing policy distributes traffic based on weights assigned to each resource.
Latency-based routing policy sends traffic to the resource with the l...
- Q4. Explain Jenkins pipeline of your Project
- Ans.
Jenkins pipeline automates the software delivery process by defining a set of steps and actions to be executed.
Pipeline is defined using a Jenkinsfile
Pipeline stages define the steps to be executed
Pipeline can include parallel stages and conditional steps
Pipeline can integrate with other tools like Git, Docker, and Kubernetes
- Q5. Docker Files. Difference between CMD and ENTRYPOINT ,ADD and COPY instructions
- Ans.
CMD and ENTRYPOINT are used to define the default command to run in a container. ADD and COPY are used to add files to a container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing a command to docker run.
ENTRYPOINT is similar to CMD, but it is not overridden by passing a command to docker run. It is used to define the main command that should be run in the c...
- Q6. Command to go inside docker container.
- Ans.
Use 'docker exec -it <container_name> /bin/bash' to access a running Docker container's shell.
The command 'docker exec' allows you to run commands in a running container.
The '-it' flags are used to run the container in interactive mode with a terminal.
Replace '<container_name>' with the actual name or ID of your container.
Example: 'docker exec -it my_container /bin/bash' opens a bash shell in 'my_container'...
- Q7. Branching strategy in your Project
- Q8. Difference between Git rebase and Git merge
- Ans.
Git rebase modifies the commit history while Git merge creates a new merge commit.
Git rebase rewrites the commit history by moving the entire feature branch to the tip of the master branch
Git merge creates a new merge commit that combines the changes from both branches
Rebasing is useful for keeping a linear commit history while merging is useful for combining multiple branches
Rebasing can cause conflicts if multiple de...
- Q9. Load Balancer types , difference between application load balancer and network load balancer
- Ans.
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and distributes traffic based on content-based routing.
Network Load Balancer operates at the transport layer and distributes traffic based on IP protocol data.
Application Load Balancer is best suited for HTTP/HTTPS traffic, while Network Load Balancer is...
- Q10. Docker Files. Difference between CMD and ENTRYPOINT ,ADD and COPY instructions
- Ans.
CMD and ENTRYPOINT are used to specify the command to run in a Docker container. ADD and COPY are used to copy files into the container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing a command to docker run.
ENTRYPOINT is similar to CMD, but the command is not easily overridden. It is useful for creating a container that always runs the same command.
ADD and...
- Q11. Load Balancer types , difference between application load balancer and network load balancer
- Ans.
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and is used to distribute traffic among multiple targets such as EC2 instances, containers, and IP addresses.
Network Load Balancer operates at the transport layer and is used to handle millions of requests per second while maintaining high throughput and...
- Q12. Docker Files. Difference between CMD and ENTRYPOINT ,ADD and COPY instructions
- Ans.
CMD and ENTRYPOINT are used to specify the command to run in a Docker container. ADD and COPY are used to add files to the container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing arguments to docker run.
ENTRYPOINT is similar to CMD, but the command is not overridden by passing arguments to docker run.
ADD and COPY are used to add files to the container. CO...
- Q13. Load Balancer types , difference between application load balancer and network load balancer
- Ans.
Application Load Balancer and Network Load Balancer are two types of load balancers used in cloud computing.
Application Load Balancer operates at the application layer and distributes traffic based on content-based routing.
Network Load Balancer operates at the transport layer and distributes traffic based on IP protocol data.
Application Load Balancer is best suited for HTTP/HTTPS traffic, while Network Load Balancer is...
- Q14. Docker Files. Difference between CMD and ENTRYPOINT ,ADD and COPY instructions
- Ans.
CMD and ENTRYPOINT are used to specify the command to run in a Docker container. ADD and COPY are used to add files to the container.
CMD is used to specify the default command to run when a container is started. It can be overridden by passing arguments to the docker run command.
ENTRYPOINT is similar to CMD, but it is not overridden by passing arguments to the docker run command. It is used to specify the main command ...
Interview Preparation Tips
1 Round - Technical Interview
2 Round - Technical interview with DevOps SME and Cloud architect
3 Round - Managerial Round
4 Round - Client interview
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
I appeared for an interview in Jan 2025.
(1 Question)
- Q1. Difference between deployment and statefull.
- Ans.
Deployment refers to the process of releasing a new version of software, while stateful refers to systems that retain data between sessions.
Deployment involves releasing new versions of software to servers or environments.
Stateful systems retain data between sessions, unlike stateless systems.
Stateful applications require more complex management and scaling compared to stateless applications.
Examples of stateful applic...
I appeared for an interview in Sep 2024, where I was asked the following questions.
- Q1. How to do blue green deployment in kubernetes
- Ans.
Blue-green deployment in Kubernetes allows seamless updates with minimal downtime by switching traffic between two identical environments.
Create two identical environments: 'blue' (current) and 'green' (new).
Deploy the new version of the application to the 'green' environment.
Use a Kubernetes Service to route traffic to the 'blue' environment initially.
Switch the Service to point to the 'green' environment once testing...
- Q2. How to create volumes dynamically in kubernetes
- Ans.
Dynamically creating volumes in Kubernetes involves using Persistent Volume Claims (PVCs) and Storage Classes.
Use a StorageClass to define the type of storage and its parameters.
Create a Persistent Volume Claim (PVC) that requests storage from the StorageClass.
Kubernetes will automatically provision a Persistent Volume (PV) based on the PVC.
Example of a StorageClass definition: ```yaml apiVersion: storage.k8s.io/v1 kin...
- Q3. Difference between load balancer and Ingress
- Ans.
Load balancers distribute traffic across servers, while Ingress manages external access to services in Kubernetes.
Load balancers operate at Layer 4 (Transport) or Layer 7 (Application) of the OSI model.
Ingress is specific to Kubernetes and provides HTTP routing to services based on rules.
Load balancers can be hardware-based (like F5) or software-based (like HAProxy).
Ingress controllers can use various backends, such as...
- Q4. AWS 3 tier architecture with autoscalling, route 53, ALB, RDS..How to sync RDS DB in both region
- Ans.
Syncing RDS databases across regions in AWS involves using read replicas or AWS Database Migration Service.
Use Amazon RDS Read Replicas to create a read replica in another region for low-latency reads.
Implement AWS Database Migration Service (DMS) for continuous data replication between RDS instances in different regions.
Consider using Amazon Aurora Global Database for multi-region, low-latency reads and writes.
Ensure ...
I applied via Naukri.com and was interviewed in Mar 2024. There were 2 interview rounds.
(2 Questions)
- Q1. Many questions on terraform
- Q2. Terraform cicd azure aks
(1 Question)
- Q1. Terraform cicd aks
I applied via Naukri.com and was interviewed in Mar 2021. There were 3 interview rounds.
Interview Questionnaire
1 Question
- Q1. Terraform, CI/CD definition, Git basic, Pipeline mostly in integration side
Interview Preparation Tips
I applied via Recruitment Consultant and was interviewed in Apr 2021. There were 4 interview rounds.
Interview Questionnaire
2 Questions
- Q1. Total 4 rounds excluding 1 assessment which is easy. 3 technical rounds and 1 HR round
- Q2. Asked about Terraform, Docker, Kubernetes and Jenkins
Interview Preparation Tips
Also, try to explain in a proper way how you contributed in present organization.
I applied via Walk-in and was interviewed in Jul 2021. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Python basics, SDLC,Cloud and ML
Interview Preparation Tips
(2 Questions)
- Q1. AWS concepts services used architecture for Kubernetes
- Ans.
AWS provides various services that can be used to build a scalable and reliable architecture for Kubernetes.
AWS Elastic Kubernetes Service (EKS) is a managed Kubernetes service that simplifies the deployment, management, and scaling of Kubernetes clusters.
AWS CloudFormation can be used to automate the provisioning of infrastructure resources for Kubernetes clusters.
AWS Identity and Access Management (IAM) can be used t...
- Q2. Jenkins CICD git
Skills evaluated in this interview
Selected
I appeared for an interview before May 2023.
(1 Question)
- Q1. DevOps Tool and Technologies
GlobalLogic Interview FAQs
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