Routing Technologies & Protocols Flashcards
7 cards from real ICND1 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Routing Technologies & Protocols flashcards as text
Which OSPF packet type is used to discover and maintain neighbor relationships?
Answer: Hello
OSPF Hello packets are sent periodically to discover neighbors and verify adjacency is maintained.
A router has two routes to 192.168.10.0/24: one via OSPF with metric 20 and one via RIP with metric 5. Which route is installed in the routing table by default?
Answer: OSPF route, because OSPF has a lower AD of 110
Administrative Distance is compared before metric; OSPF AD 110 is lower than RIP AD 120, so the OSPF route wins.
What is the default OSPF hello interval on a broadcast multi-access network?
Answer: 10 seconds
The default OSPF Hello interval on broadcast and point-to-point links is 10 seconds.
Which command enables OSPF process 1 and places interface 192.168.1.0/24 into area 0?
Answer: router ospf 1 / network 192.168.1.0 0.0.0.255 area 0
The network command under OSPF uses a wildcard mask, not a subnet mask, followed by the area number.
What does the EIGRP term 'feasible successor' refer to?
Answer: A backup route that meets the feasibility condition
A feasible successor is a backup path whose reported distance is less than the successor's feasible distance, stored in the topology table.
Which routing protocol uses the Bellman-Ford algorithm?
Answer: RIP
RIP uses the Bellman-Ford distance-vector algorithm to calculate routes.
A static route is configured with an administrative distance of 254. What is the purpose of this high AD value?
Answer: To create a floating static route used only if the dynamic route fails
A floating static route has a higher AD than dynamic routes so it only enters the routing table when the dynamic route is removed.