Static and Dynamic Routing Flashcards
7 cards from real Cisco CCNA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Static and Dynamic Routing flashcards as text
A router has two routes to 192.168.10.0/24: one via OSPF with metric 20 and one via EIGRP with metric 100. Which route is installed in the routing table by default?
Answer: The EIGRP route because EIGRP has a lower administrative distance of 90
EIGRP has an administrative distance of 90, which is lower than OSPF's 110, so the EIGRP route is preferred regardless of metric.
Which command configures a default static route on a Cisco router pointing to next-hop 10.0.0.1?
Answer: ip route 0.0.0.0 0.0.0.0 10.0.0.1
The correct syntax for a default static route uses network 0.0.0.0 with wildcard mask 0.0.0.0 followed by the next-hop address.
What is the purpose of the EIGRP feasibility condition?
Answer: It guarantees a backup route is loop-free by requiring the feasible successor's RD to be less than the successor's FD
The feasibility condition confirms a feasible successor is loop-free by checking that its reported distance is less than the current successor's feasible distance.
A floating static route is configured with administrative distance 200. Under what condition will this route appear in the routing table?
Answer: Only when the primary dynamic route from a protocol with AD less than 200 is lost
A floating static route with a higher AD than the dynamic protocol stays hidden until the dynamic route disappears, then it activates as a backup.
Which OSPF network type sends Hello packets every 10 seconds and has a dead interval of 40 seconds by default?
Answer: Broadcast and point-to-point
OSPF broadcast and point-to-point network types use a 10-second Hello interval and 40-second dead interval by default.
What does the 'S*' designation mean in a Cisco routing table output?
Answer: A candidate default static route
The 'S*' notation indicates a static route that is also a candidate default route (gateway of last resort).
A network administrator notices that EIGRP is not forming a neighbor relationship between two directly connected routers. Which mismatch would NOT prevent adjacency?
Answer: Hello timer mismatch
Unlike OSPF, EIGRP does not require Hello and Hold timers to match between neighbors to form an adjacency.