Google IT Support Professional Certificate

Day 44 – DNS and UDP

DNS is a great example of an application layer service that uses UDP for the transport…
Day 43 – DNS

Computers only understand 1 and 0. DNS (Domain Name System) – A global and highly distributed…
Day 42 – Transport and Application Layers

Client: SYN packet sender – The client sends a SYN packet to the server via TCP.…
Day 41 – Source IP and Destination IP

Protocol The Protocol field in the IPv4 header contains a number indicating the type of data…
Day 40 – Subnetting

Valid IP Address Subnetting – the process of taking a large network and splitting it up…
M1D18: Bits and Pieces of Computer Networking

Five Network Layers The TCP provides mechanisms to ensure that data is reliably delivered. The Physical…
M1D17: Technical Support Fundamentals

Glossary Abstraction: To take a relatively complex system and simplify it for our use Algorithm: A…