# Describing common layer2 technologies
# Discovery Protocol (CDP & LLDP)
# CAM & TCAM Tables & Aging Time
# Standard & extended Vlans
# Static & dynamic trunking (ISL & 802.1Q)
# VTP Modes & Versions & Pruning
# Private Vlan (PVLAN)
# Static & Dynamic EtherChannel
# L2/L3 EtherChannel
# Etherchannel Load Sharing & Load Balancing
# Misconfig Guard
# Basic principles of STP variants
# STP stability Mechanisms
# Multiple Spanning Tree
# STP & Flex-Link Interoperability
# Inter-Vlan Routing (RoS & MLS)
# HSRP & VRRP & GLBP
# IP SLA & Advanced Object Tracking
# DHCP & DHCP Relay & DHCP Proxy
# SPAN & RSPAN & ERSPAN
# L2 & 802.1q Tunneling
# Fallback Bridging & Smartport Macros