Computer Networks: Explain all layers in the OSI model and your understanding of these layers. HTTP status codes and their meaning, encryption and decryption techniques, and various protocols at different layers. Security assessment of a particular website. CDN, ARP, RARP, and various networking protocols. Common ports, such as SMTP use port 25. Use cases of TCP and UDP.

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Explanation of OSI model layers, HTTP status codes, encryption techniques, security assessment, networking protocols, common ports, and TCP/UDP use cases.

OSI model layers: Physical, Data Link, Network, Transport, Session, Presentation, Application
HTTP status codes: 200 OK, 404 Not Found, 500 Internal Server Error
Encryption techniques: AES, RSA, DES
Security assessment: Vulnerability scanning, Penetration testing, Security audits
Networking protocols: TCP/IP, HTTP, FTP, SMTP
Common ports: SMTP - port 25, HTTP - port 80, HTTPS - port 443
TCP use case: Reliable data transfer, connection-oriented
UDP use case: Fast data transfer, connectionless

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