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website-internetintermediateunit-1
DNS
Definition
The system that translates domain names into server addresses.
In Plain English
DNS is like the internet's phone book. When you type a domain name, DNS looks up the actual server address, just like looking up a phone number for a business name.
Real-World Example
When you change web hosting providers, you update DNS settings to point your domain to the new server location.
Why It Matters for Your Work
DNS problems can make your entire website unreachable. Understanding DNS helps you troubleshoot access issues.
Common Mistake
Not realizing DNS changes can take up to 48 hours to fully propagate across the internet.