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Trung
Trung
1 year ago

Question 19 the answer is wrong

JohnDoesIT
JohnDoesIT
Reply to  Trung
11 months ago

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

JohnDoesIT
JohnDoesIT
Reply to  JohnDoesIT
11 months 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
11 months 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
6 months 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
DDD
DDD
Reply to  MAX
5 months ago

R3 has an equal priority with R1 but its highest IP address is higher than IP address of loopback on R1

Max
Max
Reply to  DDD
5 months ago

Thank you for explanation)