Static routing, OSPF areas and LSAs, EIGRP metrics, BGP path attributes, administrative distance and route selection.
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- What is static routing?
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Manual configuration of routes by an administrator without the use of dynamic routing protocols
- What is the administrative distance of a static route?
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1 (or 0 if it is directly connected to the destination)
- When is static routing most appropriate?
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In small, stable networks with simple, unchanging topology
- What is the basic Cisco IOS command to create a static route?
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ip route [destination-network] [subnet-mask] [next-hop-ip-or-exit-interface]
- What does OSPF stand for?
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Open Shortest Path First
- What is the routing algorithm used by OSPF?
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Dijkstra's Shortest Path First (SPF) algorithm
- What is an OSPF area?
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A logical grouping of OSPF routers used to optimize network performance and reduce overhead
- What is OSPF Area 0?
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The backbone area that connects all other areas and handles inter-area routing
- What is an LSA in OSPF?
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Link State Advertisement, a packet containing information about a router's links and their state
- Name the five main OSPF LSA types
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Type 1 (Router), Type 2 (Network), Type 3 (Summary), Type 4 (ASBR Summary), Type 5 (External)
- What is the OSPF router ID?
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A 32-bit address that uniquely identifies an OSPF router within an autonomous system
- What is the default OSPF hello interval on a broadcast network?
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10 seconds
- What is the default OSPF dead interval on a broadcast network?
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40 seconds (four times the hello interval)
- What is an ABR in OSPF?
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Area Border Router, a router that connects multiple OSPF areas
- What does EIGRP stand for?
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Enhanced Interior Gateway Routing Protocol