Question

Each LSA has its own age timer. By default, how long does an LSA wait before requiring an update?

(a) 30 seconds

(b) 1 minute

(c) 30 minutes

(d) 1 hour

Answer 1

Correct choice is (c) 30 minutes

Easiest explanation: Each LSA has its own age timer. By default, an LSA waits for 30 minutes before requiring an update. The router then has to send a LSR (Link State Request) to its neighbors to get an update.