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Basics : Common Networking terms

Access Point:Access points are way stations in a wireless LAN that are connected to an Ethernet hub or server. Users can roam within the range of access points and their wireless device connections are passed from one access point to…
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The Cisco Three-Layered Hierarchical Model

The Cisco Three-Layered Hierarchical Model Cisco has defined a hierarchical model which simplifies the task of building a reliable, scalable, and less expensive hierarchical internetwork because rather than focusing on packet construction, it focuses on the three functional areas, or…
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What is the difference between the ip default-gateway, ip default-network, and ip route 0.0.0.0/0 commands?

Question: What is the difference between the ip default-gateway, ip default-network, and ip route 0.0.0.0/0 commands? A. The ip default-gateway command is used when IP routing is disabled on the router. This command serves non-routing network device that need to reach…
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Difference between Linkstate and distance vector protocols

Dynamic Routing Dynamic routing protocols can dynamically respond to changes in the network.  The routing protocol is configured on each router and the routers learn about both each other and remote networks. A dynamic routing table is created, maintained, and…
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How to configure Static Routes,Default routes,Floating static routes

Static Routes A static routing table is created, maintained, and updated by a network  administrator, manually. A static route to every network must be configured on every router for full connectivity. This provides a greater control  for administrator over routing,but…
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Bridge protocol data unit (BPDU)

Bridge protocol data unit (BPDU)   Switches running spanning-tree, exchange information with a special message called the (BPDU) bridge protocol data unit. BPDU is a data message transmitted across a local area network to detect loops in network topologies. A…
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OSPF Network Types

OSPF Network Types OSPF’s functionality is different across several different network topology types. They are mentioning below Broadcast Multi-Access – indicates a topology where broadcast occurs. OSPF will elect DRs and BDRs. Traffic to DRs and BDRs is multicast to…
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Spanning-tree protocol Notes with Interview Questions

spanning-tree protocol (STP) What is Spanning tree ? spanning-tree protocol  is a protocol used in switching network to create a loop-free topology. STP is enabled by default on all VLANs on Catalyst switches. STP switches send BPDU’s (Bridge Protocol Data…
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