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  2. Object–relational impedance mismatch - Wikipedia

    en.wikipedia.org/wiki/Object–relational...

    Object–relational impedance mismatch is a set of difficulties going between data in relational data stores and data in domain-driven object models. Relational Database Management Systems (RDBMS) is the standard method for storing data in a dedicated database, while object-oriented (OO) programming is the default method for business-centric design in programming languages.

  3. IP in IP - Wikipedia

    en.wikipedia.org/wiki/IP_in_IP

    The inner header TTL is decremented before encapsulation and is not changed in decapsulator. The outer header TTL is set to value such that the datagram is delivered to tunnel end point. Protocol: 8 bits This field indicates the transport layer protocol of the datagram following this header. The value is set to 4 for IP in IP.

  4. Mismatch loss - Wikipedia

    en.wikipedia.org/wiki/Mismatch_loss

    Mismatch loss in transmission line theory is the amount of power expressed in decibels that will not be available on the output due to impedance mismatches and signal reflections. A transmission line that is properly terminated, that is, terminated with the same impedance as that of the characteristic impedance of the transmission line, will ...

  5. Duplex mismatch - Wikipedia

    en.wikipedia.org/wiki/Duplex_mismatch

    The effect of a duplex mismatch is a link that operates inefficiently. Duplex mismatch may be caused by manually setting two connected network interfaces at different duplex modes or by connecting a device that performs autonegotiation to one that is manually set to a full duplex mode. [1]

  6. Separation of concerns - Wikipedia

    en.wikipedia.org/wiki/Separation_of_concerns

    Encapsulation is a means of information hiding. [2] Layered designs in information systems are another embodiment of separation of concerns (e.g., presentation layer, business logic layer, data access layer, persistence layer). [3] Separation of concerns results in more degrees of freedom for some aspect of the program's design, deployment, or ...

  7. AOL

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  8. Generic routing encapsulation - Wikipedia

    en.wikipedia.org/wiki/Generic_Routing_Encapsulation

    Generic routing encapsulation (GRE) is a tunneling protocol developed by Cisco Systems that can encapsulate a wide variety of network layer protocols inside virtual point-to-point links or point-to-multipoint links over an Internet Protocol network.

  9. AOL Mail - AOL Help

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.