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Trung
Trung
1 year ago

Question 19 the answer is wrong

JohnDoesIT
JohnDoesIT
Reply to  Trung
1 year ago

wildcard mask should be 0.0.255.255 (inverse of /16), answer 1 is the correct one

JohnDoesIT
JohnDoesIT
Reply to  JohnDoesIT
1 year ago

correction regarding first reply.. after looking into the netacad course again, the course mentions that some cisco IOS versions translate the subnetmask into a wildcard mask. So if only the 172.16.1.0 network needs to be advertised, it would be a /24 network, therefore answer 3 is the correct one.
If answer 1 would be configured, it would implicate the networks 172.16.0.0 – 172.16.255.255 would be advertised.

edwsi
edwsi
1 year ago

New question:

Which step in the link-state routing process is described by a router building a link-state database based on received LSAs?

selecting the router ID

declaring a neighbor to be inaccessible

executing the SPF algorithm

building the topology table

Answer is: building the topology table

MAX
MAX
1 year ago

 Question 20.
Why the R3 router is BDR, if it has not configured ID and no configured a loopback
As I know, elections of a DR are based on the following in order of precedence:

  • highest pritority
  • highest router ID
  • highest IP address of a loopback
  • highest IP address of interface