'2nd packet' diaporamas de présentation

TCP/IP Internal

TCP/IP . TCP/IP Internal. TCP/IP . Learning outcome. Application layer HTTP, FTP, TELNET, POP3, SMTP, IMAP, DNS protocols Transport layer TCP and UDP TCP and UDP segment Opening and closing connections Flow control Reliable data transmission Internet layer IP , ICMP, ARP and RARP

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www.mathxtc.com

970 views • 68 slides

From Computer Networking: A Top Down Approach Featuring the Internet by Jim Kurose, Keith Ross Addison-Wesley,

From Computer Networking: A Top Down Approach Featuring the Internet by Jim Kurose, Keith Ross Addison-Wesley, . A note on the use of these ppt slides:

941 views • 32 slides

rdt2.1: sender, handles garbled ACK/NAKs

Wait for ACK or NAK 0. Wait for call 1 from above. Wait for ACK or NAK 1. rdt2.1: sender, handles garbled ACK/NAKs. rdt_send(data). sndpkt = make_pkt(0, data, checksum) udt_send(sndpkt). rdt_rcv(rcvpkt) && ( corrupt(rcvpkt) || isNAK(rcvpkt) ). Wait for call 0 from above.

989 views • 22 slides

rdt2.2: a NAK-free protocol

same functionality as rdt2.1, using ACKs only instead of NAK, receiver sends ACK for last pkt received OK receiver must explicitly include seq # of pkt being ACKed duplicate ACK at sender results in same action as NAK: retransmit current pkt. rdt2.2: a NAK-free protocol.

384 views • 20 slides

About your assignment

About your assignment 5 -layers Model Application Layer (HTTP, DNS, . . .) TCP Layer (add sequence number to packets) IP Layer (for addressing) Data Link Layer (Ethernet, PPP) Physical Layer (wire, wireless, optical fibre, . . . ) Hacking Common security problems virus

668 views • 12 slides