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2. Cisco certifications - Wikipedia

   en.wikipedia.org/wiki/Cisco_certifications

   Cisco Certifications are the list of the Certifications offered by Cisco Systems.There are four to five (path to network designers) levels of certification: Associate (CCNA/CCDA), Professional (CCNP/CCDP), Expert (CCIE/CCDE) and recently, Architect (CCAr: CCDE previous), as well as nine different paths for the specific technical field; Routing & Switching, Design, Industrial Network, Network ...

3. CCNA - Wikipedia

   en.wikipedia.org/wiki/CCNA

   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. Cisco - Wikipedia

   en.wikipedia.org/wiki/Cisco

   Cisco Systems was founded in December 1984 by Leonard Bosack and Sandy Lerner, two Stanford University computer scientists who had been instrumental in connecting computers at Stanford. They pioneered the concept of a local area network (LAN) being used to connect distant computers over a multiprotocol router system.

5. 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. Packet Tracer makes use of a drag and drop user ...

6. VLAN hopping - Wikipedia

   en.wikipedia.org/wiki/VLAN_hopping

   VLAN hopping is a computer security exploit, a method of attacking networked resources on a virtual LAN (VLAN). The basic concept behind all VLAN hopping attacks is for an attacking host on a VLAN to gain access to traffic on other VLANs that would normally not be accessible. There are two primary methods of VLAN hopping: switch spoofing and ...

7. CCIE Certification - Wikipedia

   en.wikipedia.org/wiki/CCIE_Certification

   An example CCIE ceramic plaque. The Cisco Certified Internetwork Expert, or CCIE, is a technical certification offered by Cisco Systems.The Cisco Certified Internetwork Expert (CCIE) and Cisco Certified Design Expert (CCDE) certifications were established to assist the industry in distinguishing the top echelon of internetworking experts worldwide and to assess expert-level infrastructure ...

8. Fix problems signing into your AOL account - AOL Help

   help.aol.com/articles/help-signing-in

   Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Having trouble signing in? Find out how to identify and correct common sign-in issues like problems with your username and password, account locks, looping logins, and other account access errors.

9. Ethernet frame - Wikipedia

   en.wikipedia.org/wiki/Ethernet_frame

   Ethernet II frame, or Ethernet Version 2, [g] or DIX frame is the most common type in use today, as it is often used directly by the Internet Protocol. Novell raw IEEE 802.3 non-standard variation frame; IEEE 802.2 Logical Link Control (LLC) frame; IEEE 802.2 Subnetwork Access Protocol (SNAP) frame