Midterm Topics

NET-215 MidTerm Study Guide

Midterm is:

Network Protocols Overview

• Definition of a Network Protocol
• Definition of Protocol Suite
• Network Layer Models: Types and Benefits
• OSI Model: Order and basic purpose of the 7 layers
• Encapsulation: The role of “headers”

Ethernet and ARP

• Ethernet Frame Format
• MAC Address format and OUI
• Need for Layer2-Layer 3 Address Resolution
• Address Resolution Protocol - Order of Request
• ARP general message format
• ARP and Default Gateways
• ARP Bandwidth and Performance Issues
• ARP Caching
• Security concerns with MAC Spoofing
• Security concerns with ARP Spoofing
• General ARP Spoofing mitigation methods

Layer 3- Internet Protocol (IPv4)

• IP Important Functions
• IP Header Fields
• Time-to-Live
• Routing Principles
• Routing Tables
• Need for Routing Protocols
• Distance Vector vs. Link State Routing Protocols
• Interior Gateway vs. Exterior Gateway Routing Protocols

Layer 3 - NAT

• Purpose of NAT
• Functions of a NAT'ing Router
• IP Masquerading
• Port-Address-Translation (PAT)

Layer 3 - IPv6

• IPv6 address format (size, colon hex, zero compression, leading zeros)
• IPv6 Standard Subnetting (16-bit ID)
• IPv6 Header and differences with IPv4
• Creating an IPv6 address using SLAAC/EUI-64

Subnetting

• Following table will be provided- KNOW how to use it!
  • NET215-VLSM-Tablefor Midterm.pdf
• IP addresses for broadcast and network itself
• Useable host IP ranges per subnet
• CIDR and standard Subnet Mask notation