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2. Packet Tracer - Wikipedia

   en.wikipedia.org/wiki/Packet_Tracer

   Packet Tracer is a cross-platform visual simulation tool designed by Cisco Systems that allows users to create network topologies and imitate modern computer networks.The software allows users to simulate the configuration of Cisco routers and switches using a simulated command line interface.

3. 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.

4. Cisco Networking Academy - Wikipedia

   en.wikipedia.org/wiki/Cisco_Networking_Academy

   Download QR code; Print/export Download as PDF; Printable version; In other projects ... Cisco Networking Academy or NetAcad is an online global educational program ...

5. 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]

6. Generic routing encapsulation - Wikipedia

   en.wikipedia.org/wiki/Generic_Routing_Encapsulation

   C (1 bit) Checksum bit. Set to 1 if a checksum is present. R (1 bit) Routing Bit. Set to 1 if Routing and Offset information are present. K (1 bit) Key bit. Set to 1 if a key is present. S (1 bit) Sequence number bit. Set to 1 if a sequence number is present. s (1 bit) Strict source route bit. Recur (3 bits) Recursion control bits. Flags (5 bits)

7. Cisco - Wikipedia

   en.wikipedia.org/wiki/Cisco

   Cisco Systems, Inc. (using the trademark Cisco) is an American multinational digital communications technology conglomerate corporation headquartered in San Jose, California. Cisco develops, manufactures, and sells networking hardware , software , telecommunications equipment and other high-technology services and products. [ 4 ]

8. Physical coding sublayer - Wikipedia

   en.wikipedia.org/wiki/Physical_Coding_Sublayer

   The physical coding sublayer (PCS) is a networking protocol sublayer in the Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet standards. It resides at the top of the physical layer (PHY), and provides an interface between the physical medium attachment (PMA) sublayer and the media-independent interface (MII).

9. 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 ...