Computer Networking A Top-Down Approach Featuring the Internet phần 8 docx

Computer Networking A Top-Down Approach Featuring the Internet phần 8 docx

Computer Networking A Top-Down Approach Featuring the Internet phần 8 docx

... phone application. The UDP segment is encapsulated in an IP datagram, and the IP datagram makes it way through the network towards the receiver. As the datagram wanders through the network, it passes ... TCP. Address translation is one of the more important gatekeeper services. Each terminal can have an alias address, such as the name of the person at the terminal, the...
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Computer Networking A Top-Down Approach Featuring the Internet phần 1 pptx

Computer Networking A Top-Down Approach Featuring the Internet phần 1 pptx

... by paying more a state of affairs that some (particularly Americans!) find odd. We'll take a look at state-of -the art Internet research that is aimed at changing this situation in Chapter ... Daytona Beach another gas station attendant also extracts the Orlando portion of the address and tells Joe that he should take I-4 directly to Orlando. Joe takes I-4 and gets off at...
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Computer Networking A Top-Down Approach Featuring the Internet phần 2 ppsx

Computer Networking A Top-Down Approach Featuring the Internet phần 2 ppsx

... proach%2 0Featuring% 2 0the% 2 0Internet/ protocol_stacks.htm (6 of 7)20/11/2004 15:51:44 ATMover (AAL), the ATM Layer, and the ATM Physical Layer: ATM Adaptation Layer (AAL) ATM Layer ATM Physical Layer ... i.e., no data loss. In particular, a loss of file data, or data in a financial transaction, can have devastating consequences (in the latter case, for either the bank or...
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Computer Networking A Top-Down Approach Featuring the Internet phần 3 doc

Computer Networking A Top-Down Approach Featuring the Internet phần 3 doc

... is almost identical to TCPServer.java. As with TCPServer.java, we import the java.io and java.net packages. In addition to these two packages we also import the java.util package, which contains ... sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, 987 6); clientSocket.send(sendPacket); DatagramPacket receivePacket = new DatagramPacket(receiveData, rece...
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Computer Networking A Top-Down Approach Featuring the Internet phần 4 ppt

Computer Networking A Top-Down Approach Featuring the Internet phần 4 ppt

... t = 15.0 08 msec. Assuming for simplicity that ACK packets are the same size as data packets and that the receiver can begin sending an ACK packet as soon as the last bit of a data packet is ... integrity of the data in the datagrams. With IP service, datagrams can overflow router buffers and never reach their destination, datagrams can arrive out of order, and bits in the da...
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Computer Networking A Top-Down Approach Featuring the Internet phần 5 potx

Computer Networking A Top-Down Approach Featuring the Internet phần 5 potx

... to "fragment" the data in the IP datagram among two or more smaller IP datagrams, and then send these smaller datagrams over the outgoing link. Each of these smaller datagrams is referred ... data, whereas packets for many wide-area links can carry no more than 576 bytes. The maximum amount of data that a link-layer packet can carry is called the MTU (maximum transfer...
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Computer Networking A Top-Down Approach Featuring the Internet phần 6 pot

Computer Networking A Top-Down Approach Featuring the Internet phần 6 pot

... each of the receivers. What are the drawbacks of this approach compared to the approach that provides native multicast support at the network layer? What are the advantages of this approach? 4) ... The unicast routers between A and B dutifully forward the unicast packet to B, blissfully unaware that the unicast datagram itself contains a multicast datagram. When th...
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Computer Networking A Top-Down Approach Featuring the Internet phần 7 pps

Computer Networking A Top-Down Approach Featuring the Internet phần 7 pps

... make Ethernet simple and cheap. But it also means that the stream of datagrams passed to the network layer can have gaps. If there are gaps due to discarded Ethernet frames, does the application-layer ... router. ATM in the entry router indexes an ATM table to determine the VCI for the VC that leads to the ATM destination address. AAL5 then creates ATM cells out of the IP d...
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Computer Networking A Top-Down Approach Featuring the Internet phần 9 pptx

Computer Networking A Top-Down Approach Featuring the Internet phần 9 pptx

... to authenticate Alice by verifying that the source address on the IP datagram carrying the authentication message matches Alice's well-known address. If so, then Alice would be authenticated. ... that: ● the sender of the data is as claimed, i.e., that the sender has signed the data and this signature can be checked ● the transmitted data has not been changed since th...
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