in JUNOS, LSAs have a maximum age of 3600 seconds (1 hour). When an LSA reaches this age, it is considered invalid and is removed from the OSPF database.
D is not definitely the answer because configurable value range is 25 - 50 minutes.
Which means B, C are not the answer either. Only A is left.
Even Juniper refreshes the LSA every 50 minutes by default, Standard requires every 30 minutes.
I think the answer should be A. The default LSA age out of Juniper Network is 50 minutes, and the configurable range is between 25 minutes and 50 minutes.
That is, between 1500 seconds and 3000 seconds. Only option A, 1800 seconds, meets this range.
"The Juniper Networks implementation refreshes LSAs every 50 minutes"
minutes—Time between an LSA refresh, in minutes.
Range: 25 through 50 minutes (1,500 through 3,000 seconds)
Default: 50 minutes = 3000 sec
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/lsa-refresh-interval-edit-protocols-ospf.html
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DIbyam
3 weeks, 4 days agoVMWorld
1 month agoJacky3
1 month, 1 week agohabibaox
3 months, 3 weeks agoJacky3
1 month, 1 week ago