I have been going through Cisco Netacad materials for last 2 years and I've seen 1.1.1.1 in examples. Though I just did a search and did not see 1.1.1.1 mentio

I have been going through Cisco Netacad materials for last 2 years and I've seen 1.1.1.1 in examples. Though I just did a search and did not see 1.1.1.1 mentioned anymore.