Join Mike Meyers for an in-depth discussion in this video The HOSTS file, part of CompTIA Network+ (N10-006) Cert Prep: 4 Making TCP/IP Work.
- Here's an interesting little fact:…there was a time where the internet ran without DNS.…Now, we're going back 25 years ago,…about the first 10 to 15 years…of the internet really kicking in.…We didn't use DNS.…Keep in mind there weren't that many computers…on the internet, just a few thousand,…so instead of DNS, which didn't exist,…they had something called a hosts file,…H-O-S-T-S.…There's no extension, there's not dot text,…dot doc or anything, and it's just a text file.…The hosts file was nothing more than a listing…of a bunch of names and then their associated IP addresses.…
In fact, back in the old days,…they didn't even have fully qualified domain names.…You could pretty much name your computer…almost anything you wanted.…It was a mess, but back in the early days, it worked.…Now, DNS completely supplanted the hosts file as a concept.…However, the hosts file still exists.…It's in every computer that runs TCP/IP;…Windows, Macs, Linux, they've all got a hosts file.…And the cool part is, you ready for this?…The hosts file will take precedence over DNS.…
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Skill Level Intermediate
Q: This course was updated on 06/20/2017. What changed?
A: New videos were added that cover Windows name resolution and the net command.