[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] [X] [Z] UDP (User Datagram Protocol) 2nd 3rd 4th header 2nd unicast addresses unicast IPv4 addresses 2nd 3rd classes 2nd 3rd unicast IPv6 addresses 2nd aggregatable global 2nd IPv4-mapped IPv6 address 2nd link-local loopback address type site-local unspecified address type unshielded twisted-pair (UTP) unsolicited ARP messages unspecified address type unicast IPv6 address Update DNS Host Information Upon Client Request check box update triggers option RIPfv1 (Routing Information Protocol Version 1) updates dynamic DNS 2nd 3rd 4th 5th Urgent Pointer header field (TCP) use field (netstat r command) User Datagram Protocol (UDP) User DataGram Protocol (UDP) 2nd User Datagram Protocol (UDP) User DataGram Protocol (UDP) header 2nd utilities snoop NTP (Network Time Protocol) troubleshooting 2nd UTP (unshielded twisted-pair) |