Sure! Here are the answers to the **AWS Services and Cloud Infrastructure** questions: ### **AWS Services and Cloud Infrastructure (50 Questions and Answers)** 1. **How do you configure Auto Scaling for EC2 instances in AWS?** - To configure Auto Scaling for EC2 instances, create an Auto Scaling group with a launch configuration or launch template that specifies the instance type, AMI, and other configurations. Set desired, minimum, and maximum capacity. Configure scaling policies based on CloudWatch metrics (like CPU utilization) to automatically adjust the number of instances. 2. **What are the differences between ALB and NLB, and when would you choose one over the other?** - ALB (Application Load Balancer) operates at Layer 7 (application layer) and is suitable for HTTP/HTTPS traffic, allowing for advanced routing, SSL termination, and WebSocket support. NLB (Network Load Balancer) operates at Layer 4 (transport layer) and is ideal for TCP traffic, providing high performanc
Linux Booting Process: The Linux booting process involves several stages: BIOS/UEFI initializes hardware, boot loader (GRUB) loads the kernel, kernel initializes hardware and mounts the root filesystem, and init/systemd starts essential processes. Systemd: Systemd is an initialization system and service manager in Linux. It's responsible for starting and managing system services, handling daemons, and managing system resources. Web Servers (Apache, Nginx, Tomcat): Web servers handle incoming requests and serve web content. Apache, Nginx, and Tomcat are popular choices. They listen on specific ports, process requests, and serve web pages, applications, or servlets. Linux Processes: Linux processes are running instances of programs. Each has a unique process ID (PID) and resources. They can communicate, spawn child processes, and be managed by signals. HTTP Proxies: HTTP proxies act as intermediaries between clients and servers, forwarding requests and responses. They can be use