• Computer networks: a systems approach - Chapter 8: Network securityComputer networks: a systems approach - Chapter 8: Network security

    We have discussed privacy and security issues in the network We have discussed different authentication protocols We have discussed different key distribution protocols We have discussed different cipher techniques Classical and Public-Key We have discussed some examples of secured systems PGP, SSH, IPSec

    ppt72 trang | Chia sẻ: nguyenlam99 | Ngày: 10/01/2019 | Lượt xem: 1404 | Lượt tải: 0

  • Computer networks: a systems approach - Chapter 7: End - To - end dataComputer networks: a systems approach - Chapter 7: End - To - end data

    Video Compression (MPEG) Frame Types MPEG takes a sequence of video frames as input and compresses them into three types of frames, called I frames (intrapicture), P frames (predicted picture), and B frames (bidirectional predicted picture). Each frame of input is compressed into one of these three frame types. I frames can be thought of as ref...

    ppt57 trang | Chia sẻ: nguyenlam99 | Ngày: 10/01/2019 | Lượt xem: 1403 | Lượt tải: 0

  • Computer networks: a systems approach - Chapter 6: Congestion control and resource allocationComputer networks: a systems approach - Chapter 6: Congestion control and resource allocation

    We have discussed different resource allocation mechanisms We have discussed different queuing mechanisms We have discussed TCP Congestion Control mechanisms We have discussed Congestion Avoidance mechanisms We have discussed Quality of Services

    ppt125 trang | Chia sẻ: nguyenlam99 | Ngày: 10/01/2019 | Lượt xem: 1349 | Lượt tải: 0

  • Computer networks: a systems approach - Chapter 5: End - To - end protocolsComputer networks: a systems approach - Chapter 5: End - To - end protocols

    We have discussed how to convert host-to-host packet delivery service to process-to-process communication channel. We have discussed UDP We have discussed TCP

    ppt48 trang | Chia sẻ: nguyenlam99 | Ngày: 10/01/2019 | Lượt xem: 1176 | Lượt tải: 0

  • Computer networks: a systems approach - Chapter 4: Advanced internetworkingComputer networks: a systems approach - Chapter 4: Advanced internetworking

    Route optimization in Mobile IP The route from the sending node to mobile node can be significantly sub-optimal One extreme example The mobile node and the sending node are on the same network, but the home network for the mobile node is on the far side of the Internet Triangle Routing Problem Solution Let the sending node know the care-of-ad...

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  • Computer networks: a systems approach - Chapter 3: InternetworkingComputer networks: a systems approach - Chapter 3: Internetworking

    We have looked at some of the issues involved in building scalable and heterogeneous networks by using switches and routers to interconnect links and networks. To deal with heterogeneous networks, we have discussed in details the service model of Internetworking Protocol (IP) which forms the basis of today’s routers. We have discussed in details ...

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  • Computer networks: a systems approach - Chapter 2: Getting connectedComputer networks: a systems approach - Chapter 2: Getting connected

    We introduced the many and varied type of links that are used to connect users to existing networks, and to construct large networks from scratch. We looked at the five key issues that must be addressed so that two or more nodes connected by some medium can exchange messages with each other Encoding Framing Error Detecting Reliability Multipl...

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  • Computer networks: a systems approach - Chapter 1: FoundationComputer networks: a systems approach - Chapter 1: Foundation

    We have identified what we expect from a computer network We have defined a layered architecture for computer network that will serve as a blueprint for our design We have discussed the socket interface which will be used by applications for invoking the services of the network subsystem We have discussed two performance metrics using which we c...

    ppt51 trang | Chia sẻ: nguyenlam99 | Ngày: 10/01/2019 | Lượt xem: 1113 | Lượt tải: 0

  • Finding minimal neural networks for business intelligence applicationsFinding minimal neural networks for business intelligence applications

    Prediction of US Dollar versus Deutsche Mark by Craven and Shavlik (I i l J l f N l S V l 8 N 4 A 1997 373 384 Thank you! nternat ona ourna o eura ystems, o . , o. , ugust , ‐ . • Number of input attributes: 69. • 12 inputs represent information from the time‐series, e.g. relative strength index, skewness, point and figure chart indicators. ...

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  • Midterm review cryptography và network securityMidterm review cryptography và network security

    PKI - Public Key Infrastructure ▫ X.509 Authentication service ▫ Based on asymmetric cryptography ▫ Basic function - authentication of public keys ▫ Achieved by signing public keys ▫ Public key certificates issued by certifying authorities (CA) ▫ Permits different public key algorithms ▫ Revocation of certificates

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