Basic networking concepts for Devops engineer

Here are some fundamental networking concepts that are important for a DevOps engineer:

1. IP Addressing:IPv4 and IPv6: Know the difference between IPv4 and IPv6 addresses, and understand their formats.Subnetting: Understand how to subnet IP addresses and allocate them efficiently.
2. Routing:Routing Tables: Know how routing tables work and how routers make decisions to forward packets.Static and Dynamic Routing: Understand the difference between static and dynamic routing, and be familiar with protocols like OSPF and BGP.
3. Switching:Layer 2 Switching: Understand how switches operate at the data link layer and make forwarding decisions based on MAC addresses.VLANs: Know how to configure and manage Virtual LANs for network segmentation.
4. Firewalls:Packet Filtering: Understand the basics of packet filtering and how firewalls use rules to allow or deny traffic.Stateful Inspection: Know how stateful firewalls keep track of the state of active connections.
5. Load Balancing:Types of Load Balancing: Understand different load balancing algorithms (e.g., Round Robin, Least Connections) and how they distribute traffic across servers.High Availability: Know how load balancing contributes to high availability.
6. DNS (Domain Name System):Name Resolution: Understand how DNS resolves domain names to IP addresses.Record Types: Be familiar with different DNS record types (A, CNAME, MX, etc.).
7. Protocols:TCP/IP: Have a solid understanding of the TCP/IP protocol suite.HTTP/HTTPS: Understand how web protocols work and the importance of secure connections (HTTPS).FTP, SSH, Telnet: Familiarize yourself with common protocols for file transfer and remote access.
8. Security:Network Security: Understand the basics of network security, including firewalls, intrusion detection/prevention systems, and VPNs.SSL/TLS: Know the importance of securing communications over the network.
9. Monitoring and Troubleshooting:Packet Capture: Know how to use tools like Wireshark for packet capture and analysis.Network Monitoring Tools: Familiarize yourself with tools like Nagios, Prometheus, or Grafana for monitoring network performance.
10. Automation and Scripting:Network Automation: Learn how to automate network configurations using tools like Ansible or Puppet.APIs: Understand how to interact with network devices through APIs.