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I found the access-list statement in this simlet rather confusing, if any one has any thoughts..:

When I use Austin(config)# access-list 102 deny tcp any host 192.168.37.1 0.0.0.255 eq telnet, the simlet returns "Invalid input" error.
When I omit "host" it takes it and marks the answer "correct".

Is this an error in the simlet or What is the right way to do it in this scenario? Anyone with some insight?

host 192.168.37.1 0.0.0.255 is wrong.

The keyword host means wildcard mask of 0.0.0.0 (single host), and you are providing another wildcard mask of 0.0.0.255.

host 192.168.37.1 is equivalent to 192.168.37.1 0.0.0.0.

Thanks, Admin!