Section: Module 5: OSI Reference Model | Fundamental of Computer Networking | NUEL

Section outline

- Select activity OSI Reference Model
  
  OSI Reference Model Book
  
  Students must
  
  Mark as done
- Select activity Network Security Basics
  
  Network Security Basics Page
  
  Students must
  
  Mark as done
  
  Network Security Basics
  
  1. Authentication & Encryption
  
  Authentication verifies identities using passwords, tokens, or certificates to ensure only authorized users or devices gain access rusheelraj.pythonanywhere.com+13vocal.media+13trendmicro.com+13.
  
  Encryption scrambles data to keep it confidential and ensure integrity:
  
  Symmetric (e.g., AES): same key for encryption & decryption.
  
  Asymmetric (e.g., RSA): uses public/private key pairs