The journey.
WHAT HAPPENS WHEN YOU LOAD A PAGE
Your device resolves the name to an address It opens a connection to that address It sends a request The server responds The data returns in pieces and is reassembled
WHAT THE PIECES ARE
Data is divided into packets, each carrying addressing information.
WHY DIVIDED
Smaller pieces travel more efficiently and a lost piece can be resent without repeating everything.
HOW PACKETS FIND THEIR WAY
Each router along the path examines the destination and forwards it onward.
No single device knows the whole route.
WHAT THAT MEANS
Packets may take different paths and arrive out of order.
They are reassembled at the destination.
WHAT CAN GO WRONG
Packets lost Packets delayed A router along the path failing The name not resolving at all
WHY THIS MATTERS TO YOU
Understanding the sequence tells you where to look when something fails.
WHAT TO TEST FIRST
Whether the name resolves, before anything else.
