PPT Slide
?????TCP uses the 2 MSL wait during connection setup to avoid confusion between multiple connection incarnations.
Yes. MSL= maximum segment lifetime. 2 MSL wait assures TCP that segments belonging to the earlier incarnation have been flushed from the network.
???? Telephony does not require ARP because it does not have multiple levels of addresses and runs over point-to-point links.
True. ARP is necessary only when there is a “resolution” problem which occurs due to the overlay model of internetworking. Point-to-point links don’t need addresses at the link level.
????When the header checksum fails at a router, the IP packet is dropped and an error message is sent to the source.
No. IP does not send error messages. And even ICMP does not send error messages for this particular error case.