a top down approach featuring the internet 5th edition pdf

... channel ❍ receiver read data from underlying channel Wait for call from above packet = make_pkt(data) udt_send(packet) rdt_send(data) extract (packet,data) deliver_data(data) Wait for call from below rdt_rcv(packet) sender receiver ... TCP and UDP application transport network data link physical application transport network data link physical network data link physical network data link physical network data link physical network data ... link physical application transport network data link physical network data link physical network data link physical network data link physical network data link physical network data link physical l o g i c a l ...

Ngày tải lên: 27/06/2014, 16:20

... stored audio and video 2) Streaming live audio and video 3) Real-time interactive audio and video Jitter is the variability of packet delays within the same packet stream 7: Multimedia Networking ... resolution audio stream as the redundant information ã for example, nominal stream PCM at 64 kbps and redundant stream GSM at 13 kbps. ã Whenever there is non-consecutive loss, the receiver can conceal ... is a positive constant. Remaining packets in talkspurt are played out periodically 7: Multimedia Networking 7-5 MM Networking Applications Fundamental characteristics: ❒ Typically delay...

Ngày tải lên: 27/06/2014, 16:20

... management agent data agent data agent data agent data managed device managed device managed device managed device managing entity data network management protocol definitions: managed devices contain managed objects ... whose data is gathered into a Management Information Base (MIB) managing entity Network Management 9- 15 SNMP protocol Two ways to convey MIB info, commands: agent data Managed device managing entity response agent data Managed ... management? ❒ Internet- standard management framework ❍ Structure of Management Information: SMI ❍ Management Information Base: MIB ❍ SNMP Protocol Operations and Transport Mappings ❍ Security and Administration ❒ ASN.1 ...

Ngày tải lên: 27/06/2014, 16:20

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:21

Ngày tải lên: 14/08/2014, 13:22

Ngày tải lên: 14/08/2014, 13:22

Ngày tải lên: 14/08/2014, 13:22

... SSL and TCP/IP Application TCP IP Normal Application Application SSL TCP IP Application with SSL ã SSL provides application programming interface (API) to applications ã C and Java ... “I am Alice” R MAC Transfer $1M from Bill to Susan MAC = f(msg,s,R) Defending against playback attack: nonce 73 Toy: Data Records ❒  Why not encrypt data in constant stream as we ... libraries/classes readily available 80 Real SSL: Handshake (1) Purpose 1.  Server authentication 2.  Negotiation: agree on crypto algorithms 3.  Establish keys 4.  Client authentication...

Ngày tải lên: 28/03/2014, 20:20