Overview:
The CCNA exam covers the following interswitch connectivity topics:
2.5.a Trunk ports
2.5.b Add and remove VLANs on a trunk
2.5.c DTP - Dynamic Trunking Protocol
2.5.d VTP (v1&v2) - VLAN Trunking Protocol
2.5.e 802.1Q
2.5.f Native VLAN