WHICH THREE STATEMENTS ARE TRUE OF HOLDDOWN TIMERS

2. Which three statements are true of holddown timers? (Choose three.)

• used by link state routing protocols to prevent routing loops

• prevent update messages from reinstating a route that may have gone bad

• allow routers to still forward packets to destination networks that are in holddown

• limit the number of hops a packet can traverse through the network before it is discarded

• prevent a router advertising a network through the same interface from which the network was learned

• permit lower metric updates received from any neighboring router to reinstate the route to a possibly down Network