deVops pathshala Blog – Notes for Me & You

  1. Basic Level EC2 Interview Questions ये वो सवाल हैं जो किसी भी fresher या beginner से ज़रूर पूछे जाते हैं। 1.What is Amazon EC2? 2.What are the benefits of using EC2? 3.What is the difference between EC2 and a physical server? 4.What are EC2 instance types? Name a few. 5.What is an AMI (Amazon Machine Image)? 6.How do you launch an EC2 instance? 7.What is the difference between On-Demand, Reserved, and Spot Instances? 8.What is the difference between EBS and Instance Store? 9.What is Elastic IP in EC2? 10.What is the default limit of EC2 instances per region? 11.Can we stop and restart a Spot Instance? 12.How to connect to EC2 instance using SSH? 13.What is Key Pair in EC2? 14.What is the difference between public and private IP? 15.What is the difference between rebooting and stopping an EC2 instance? 2. Intermediate Level EC2 Interview Questions ये तब पूछे जाते हैं जब interviewer देखना चाहता है कि आपको practical और configuration का knowledge है। 16.What is the difference betw...

  VPC:-   A VPC (Virtual Private Cloud) in AWS is a private, isolated network you create in the AWS cloud to launch and manage your resources like EC2 instances, databases, etc.  Think of it as your own private data center inside AWS, where you have full control over:   • IP address ranges (CIDR blocks)  • Subnets (public & private)   • Routing (via route tables)  • Internet access (via Internet Gateway or NAT Gateway)   • Security (via security groups & network ACLs) Example    • Suppose you rent a building (AWS Cloud).   • Inside it, you design your own office layout (VPC).   • You decide rooms (subnets), doors (gateways), and locks (security groups). Key Features of VPC    1. Isolated Environment – Your VPC is separated from other AWS users’ networks.  2. Customizable IP Range – You choose IPv4/IPv6 address range.  3. Multiple Subnets – Create public and private subnets. ...