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CCNA (Cisco Certified Network Associate) is an information technology (IT) certification from Cisco Systems. CCNA certification is an associate-level Cisco Career certification. Cisco exams have changed several times in response to changing IT trends.
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 ...
Cisco Networking Academy or NetAcad is an online global educational program product of American Cisco Systems. It started in California in 1997. It started in California in 1997. [1] [2] [3] [4]
Cisco Certified DevNet Professional; Migration guides to the newer certification exams are available from Cisco at its CCNP Migration Tools page. Required exams. Before February 2020 relevant entry-level certifications needed to be passed in advance if a candidate wanted to attempt the professional level exams.
Cisco completed its acquisition of Splunk in March as part of its efforts to reduce dependence on its core networking business. Including Splunk, revenue in Cisco's security segment jumped 36% in ...
1. Physical layer. In the IEEE 802 reference model of computer networking, the logical link control ( LLC) data communication protocol layer is the upper sublayer of the data link layer (layer 2) of the seven-layer OSI model. The LLC sublayer acts as an interface between the medium access control (MAC) sublayer and the network layer.
Linux distribution. Linux ( / ˈlɪnʊks / LIN-uuks) [11] is a family of open-source Unix-like operating systems based on the Linux kernel, [12] an operating system kernel first released on September 17, 1991, by Linus Torvalds.
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.
The Spanning Tree Protocol ( STP) is a network protocol that builds a loop-free logical topology for Ethernet networks. The basic function of STP is to prevent bridge loops and the broadcast radiation that results from them. Spanning tree also allows a network design to include backup links providing fault tolerance if an active link fails.
Open Shortest Path First ( OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS). OSPF gathers link state information from available routers and constructs a topology map of the ...