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  2. Cisco IOS - Wikipedia

    en.wikipedia.org/wiki/Cisco_IOS

    The Cisco IOS monolithic kernel does not implement memory protection for the data of different processes. The entire physical memory is mapped into one virtual address space. The Cisco IOS kernel does not perform any memory paging or swapping. Therefore the addressable memory is limited to the physical memory of the network device on which the ...

  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. Packet Tracer - Wikipedia

    en.wikipedia.org/wiki/Packet_Tracer

    However, due to functional limitations, it is intended by Cisco to be used only as a learning aid, not a replacement for Cisco routers and switches. [9] The application itself only has a small number of features found within the actual hardware running a current Cisco IOS version. Thus, Packet Tracer is unsuitable for modelling production networks.

  5. Cisco IOS XR - Wikipedia

    en.wikipedia.org/wiki/Cisco_IOS_XR

    Cisco IOS XR Line card running IOS XR. IOS XR is a release train of Cisco Systems ' widely deployed Internetwork Operating System (IOS) , used on their high-end Network Convergence System (NCS) and carrier-grade routers such as the ASR 9000 series and Carrier Routing System series of routers.

  6. Zillow predicts hottest housing markets of 2025: See which ...

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    Zillow's top 10 hottest housing markets of 2025. The primary reasons Buffalo was number one again, according to Zillow? Job and wage growth, relative affordability and demand that outweighs supply.

  7. NFL playoff scenarios Week 15: Vikings, Steelers, Texans have ...

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    With just one game down in Week 15, one NFL team's clinching scenario is already off the table. A tie between the Los Angeles Rams and San Francisco 49ers on Thursday night would have kept alive ...

  8. CDC warns of 'high' respiratory virus activity as cases ... - AOL

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    Respiratory illness activity – a measure of how often conditions like the common cold, flu, COVID-19, and respiratory syncytial virus are diagnosed – is currently "high" in the United States ...

  9. Cisco IOS XE - Wikipedia

    en.wikipedia.org/wiki/Cisco_IOS_XE

    IOS XE is a release train of Cisco Systems' widely deployed Internetworking Operating System (IOS), introduced with the ASR 1000 series. [2]It is built on Linux [3] [4] and provides a distributed software architecture that moves many operating system responsibilities out of the IOS process [5] [6] and has a copy of IOS running as a separate process. [7]