Networking Guess first

Can You Load a Site Without DNS?

Most students get this wrong on campus Wi-Fi.

Lesson notes

Describe how a host gets an IP, finds a MAC address, and resolves a domain name

Key points

DNS only translates a name like ug.edu.gh into an IP address, while packets themselves are always delivered using IP addresses.
So if DNS is down but you type the server's IP directly, your packets still reach it, because routing never needs names.

Takeaway: DNS finds the address; IP delivers the packet.

Quick check: DNS fails on your hostel Wi-Fi. Can you still reach a server by typing its IP address?

No, DNS carries the traffic
No, routers need the name
Yes, routing uses IPs

DNS maps names to IPs; actual delivery always uses IP addresses.

ARPDHCPDNSNATName vs address

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