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  2. Cisco certifications - Wikipedia

    en.wikipedia.org/wiki/Cisco_certifications

    The CCIE consists of a written exam and a "lab" exam (in each track). The written exam acts as a prerequisite of the lab exam and has a cost of $400 per attempt. The written exam consists of 100 questions that must be completed within 2 hours. Upon passing the written exam, the candidate has eighteen months to take the lab exam.

  3. CCNA - Wikipedia

    en.wikipedia.org/wiki/CCNA

    CCNA (Cisco Certified Network Associate) is an entry-level information technology (IT) certification offered by Cisco Systems. CCNA certification is widely recognized in the IT industry as the foundational step for careers in IT positions and networking roles. [1] [2] Cisco exams routinely change in response to evolving IT trends. [3]

  4. Windows Vista networking technologies - Wikipedia

    en.wikipedia.org/wiki/Windows_Vista_networking...

    Windows Vista classifies the networks it connects to as either Public, Private or Domain and uses Network Location Awareness to switch between network types. Different network types have different firewall policies. An open network such as a public wireless network is classified as Public and is the most restrictive of all network settings. In ...

  5. Data link layer - Wikipedia

    en.wikipedia.org/wiki/Data_link_layer

    Inter-network routing and global addressing are higher-layer functions, allowing data-link protocols to focus on local delivery, addressing, and media arbitration. In this way, the data link layer is analogous to a neighborhood traffic cop; it endeavors to arbitrate between parties contending for access to a medium, without concern for their ...

  6. Ethernet - Wikipedia

    en.wikipedia.org/wiki/Ethernet

    Advanced networking features also ensure port security, provide protection features such as MAC lockdown [47] and broadcast radiation filtering, use VLANs to keep different classes of users separate while using the same physical infrastructure, employ multilayer switching to route between different classes, and use link aggregation to add ...

  7. IEEE 802.1X - Wikipedia

    en.wikipedia.org/wiki/IEEE_802.1X

    IEEE 802.1X is an IEEE Standard for port-based network access control (PNAC). It is part of the IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN.

  8. Service-oriented architecture - Wikipedia

    en.wikipedia.org/wiki/Service-oriented_architecture

    In communications systems, for example, little development of solutions that use truly static bindings to talk to other equipment in the network has taken place. By embracing a SOA approach, such systems can position themselves to stress the importance of well-defined, highly inter-operable interfaces.

  9. PCI Express - Wikipedia

    en.wikipedia.org/wiki/PCI_Express

    On 6 October 2021, the PCI Express 6.0 revision 0.9 specification (a "final draft") was released. [106] On 11 January 2022, PCI-SIG officially announced the release of the final PCI Express 6.0 specification. [107] On 18 March 2024, Nvidia announced Nvidia Blackwell GB100 GPU, the world's first PCIe 6.0 GPU. [108]