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  2. Tier 1 network - Wikipedia

    en.wikipedia.org/wiki/Tier_1_network

    The subset representing Tier 1 networks is collectively understood in a loose sense, but not published as such. Common definitions of Tier 2 and Tier 3 networks: Tier 2 network: A network that peers for no charge with some networks, but still purchases IP transit or pays for peering to reach at least some portion of the Internet.

  3. Interface segregation principle - Wikipedia

    en.wikipedia.org/wiki/Interface_segregation...

    A typical violation of the Interface Segregation Principle is given in Agile Software Development: Principles, Patterns, and Practices [1] in 'ATM Transaction example' and in an article also written by Robert C. Martin specifically about the ISP. [6] This example discusses the User Interface for an ATM, which handles all requests such as a ...

  4. Python (programming language) - Wikipedia

    en.wikipedia.org/wiki/Python_(programming_language)

    Since 7 October 2024, Python 3.13 is the latest stable release, and it and, for few more months, 3.12 are the only releases with active support including for bugfixes (as opposed to just for security) and Python 3.9, [54] is the oldest supported version of Python (albeit in the 'security support' phase), due to Python 3.8 reaching end-of-life.

  5. Classless Inter-Domain Routing - Wikipedia

    en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

    The IP address in CIDR notation is always represented according to the standards for IPv4 or IPv6. The address may denote a specific interface address (including a host identifier, such as 10.0.0.1 / 8), or it may be the beginning address of an entire network (using a host identifier of 0, as in 10.0.0.0 / 8 or its equivalent 10 / 8).

  6. Software-defined networking - Wikipedia

    en.wikipedia.org/wiki/Software-defined_networking

    Software-defined networking (SDN) is an approach to network management that uses abstraction to enable dynamic and programmatically efficient network configuration to create grouping and segmentation while improving network performance and monitoring in a manner more akin to cloud computing than to traditional network management. [1]

  7. Internet service provider - Wikipedia

    en.wikipedia.org/wiki/Internet_service_provider

    Tier 2 ISPs depend on Tier 1 ISPs and often have their own networks, but must pay for transit or internet access to Tier 1 ISPs, but may peer or send transit without paying, to other Tier 2 ISPs. Tier 3 ISPs do not engage in peering and only purchase transit from Tier 2 and Tier 1 ISPs, and often specialize in offering internet service to end ...

  8. Autonomous system (Internet) - Wikipedia

    en.wikipedia.org/wiki/Autonomous_system_(Internet)

    This is an accepted version of this page This is the latest accepted revision, reviewed on 10 October 2024. Internet routing system An autonomous system (AS) is a collection of connected Internet Protocol (IP) routing prefixes under the control of one or more network operators on behalf of a single administrative entity or domain, that presents a common and clearly defined routing policy to ...

  9. Routing protocol - Wikipedia

    en.wikipedia.org/wiki/Routing_protocol

    A routing protocol shares this information first among immediate neighbors, and then throughout the network. This way, routers gain knowledge of the topology of the network . The ability of routing protocols to dynamically adjust to changing conditions such as disabled connections and components and route data around obstructions is what gives ...