Dive into a comprehensive 30-minute video lecture on the IPv4 header as part of a free CCNA 200-301 course. Explore the various fields within the IPv4 header, including Version, IHL, DSCP, ECN, Total Length, Identification, Flags, Fragment Offset, Time To Live, Protocol, Header Checksum, Source/Destination IP Address, and Options. Gain practical insights through a Wireshark packet capture demonstration and reinforce your understanding with five quizzes. Perfect for aspiring network professionals preparing for the CCNA certification exam.