American Express Devops Engineer Interview Questions and Answers

3 ques at time in coding round with mid level difficulty

Q1. 2 coding questions on dsa
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Q1. Manager interview
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Q1. Explain ingress
Ans. 
Ingress is a Kubernetes resource that manages external access to services within a cluster.
• Ingress allows you to route external HTTP and HTTPS traffic to services based on defined rules.

• It acts as a layer 7 load balancer for routing traffic to different services within the cluster.

• Ingress controllers like Nginx or Traefik are used to implement and manage Ingress resources.

• TLS termination, path-based routing, and host-b...read more
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Q2. How do you reduce docker image size
Ans. 
To reduce docker image size, remove unnecessary files, use multi-stage builds, minimize layers, and use smaller base images.
• Remove unnecessary files and dependencies

• Utilize multi-stage builds to separate build dependencies from runtime dependencies

• Minimize the number of layers in the Dockerfile

• Use smaller base images like Alpine instead of larger ones like Ubuntu
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Q1. Basic Azure questions, CI /Cd details
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Q1. Behavioral questions
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Q1. Where do you see yourself in 5 years?
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Q2. Why should we hire you?
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Q3. What are your salary expectations?
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Q4. What is your family background?
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Q1. Write ansible to copy files from machine to another
Ans. 
Use Ansible playbook to copy files from one machine to another
• Create an Ansible playbook with tasks to copy files

• Use the 'copy' module in Ansible to copy files

• Specify source and destination paths in the playbook

• Run the playbook using 'ansible-playbook' command
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Q1. Devops basics questions
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Q2. Terraform, projects you have worked in previous organisation, middleware ( as they have mostly legacy systems)
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Q3. Basic shell sxripting related questions
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Q1. Explain Transite gatewat
Ans. 
Transit gateway is a service that enables customers to connect their VPCs and on-premises networks through a central hub.
• Transit gateway simplifies network architecture by allowing multiple VPCs to connect to it, reducing the need for complex peering relationships.

• It supports VPN connections, Direct Connect gateways, and inter-region peering.

• Transit gateway can also be used to connect on-premises networks to multiple V...read more
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Q2. What is VPC and explain this
Ans. 
VPC stands for Virtual Private Cloud, a virtual network dedicated to your AWS account.
• VPC allows you to create a logically isolated section of the AWS Cloud where you can launch resources in a virtual network.

• You have complete control over your virtual networking environment, including selection of your own IP address range, creation of subnets, and configuration of route tables and network gateways.

• VPC helps in improv...read more
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Q3. Gateway endpoint
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Q4. Transit gateway
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Q5. Kuber native architecture
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