When a floating static route is configured, which action ensures that the backup route is used when the primary route fails?
Answer(s): D
Refer to the exhibit. The show ip ospf interface command has been executed on R1. How is OSPF configured?
Answer(s): C
From the output we can see there are Designated Router & Backup Designated Router for this OSPF domain so this is a broadcast network (point-to-point and point-to-multipoint networks do not elect DR & BDR).By default, the timers on a broadcast network (Ethernet, point-to-point and point-to-multipoint) are 10 seconds hello and 40 seconds dead. The timers on a non- broadcast network are 30 seconds hello 120 seconds dead.From the line “Neighbor Count is 3”, we learn there are four OSPF routers in this OSPF domain.
https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13689-17.html
A user configured OSPF and advertised the Gigabit Ethernet interface in OSPF. By default, to which type of OSPF network does this interface belong?
The Broadcast network type is the default for an OSPF enabled ethernet interface (while Point-to-Point is the default OSPF network type for Serial interface with HDLC and PPP encapsulation).
https://www.oreilly.com/library/view/cisco-ios-cookbook/0596527225/ch08s15.html
Which attribute does a router use to select the best path when two or more different routes to the same destination exist from two different routing protocols?
Administrative distance is the feature used by routers to select the best path when there are two or more different routes to the same destination from different routing protocols. Administrative distance defines the reliability of a routing protocol.
Router A learns the same route from two different neighbors; one of the neighbor routers is an OSPF neighbor, and the other is an EIGRP neighbor.What is the administrative distance of the route that will be installed in the routing table?
Answer(s): B
The Administrative distance (AD) of EIGRP is 90 while the AD of OSPF is 110 so EIGRP route will be chosen to install into the routing table.
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