what is OSI model. What is VLAN VTP STP BGP OSPF EIGRP

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The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

VLAN stands for Virtual Local Area Network and is used to segment network traffic.
VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol used to manage VLAN configurations across a network.
STP (Spanning Tree Protocol) is used to prevent loops in Ethernet networks.
BGP (Border Gateway Protocol) is a routing protocol used to exchange routing information between different autonomous systems.
OSPF (Open Shortest Path First) is a link-state routing protocol used to determine the best path for data packets in a network.
EIGRP (Enhanced Interior Gateway Routing Protocol) is a Cisco proprietary routing protocol that uses a composite metric based on bandwidth, delay, reliability, and load.

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