1. OSI Ref Model/TCP-IP Model
· Explanation of each layer
· Protocols at each layer
2. ARP
· Packet structure ARP, GARP
· Diff between ARP & GARP
3. Ethernet Frame
· Fields in Ethernet II frame
· Size of Ethernet Frame
· LLC & MAC Sublayer
4. IP
· Fields in IP header
· Importance of Identification field, Flags, Fragment Offset
· Fragmentation-Importance, Detailed understanding of how packet is reassembled
· Path MTU Discovery
5. TCP
· 3 way handshake
· Parameters Informed, negotiated in TCP