How data moves

4 lessons in the Networking course.

Full Networking course · Search this topic · IT & cloud

• TCP vs UDPCompare TCP and UDP so you can choose reliability versus simplicity.
• Ports and Common ServicesLearn how port numbers identify services on a host.
• DNS ExplainedSee how DNS turns human-friendly names into IP addresses.
• HTTP and HTTPS BasicsUnderstand how browsers fetch pages and why HTTPS adds encryption.