S1:E2 - The Internet Is Like a Swimming Pool
Data & Dev with Jon and Mel
English - September 13, 2021 21:46 - 37 minutes - 34.6 MB - ★★★★★ - 3 ratingsTechnology Homepage Download Apple Podcasts Google Podcasts Overcast Castro Pocket Casts RSS feed
Jon and Mel dive into the question of the day: "When I open the weather app on my phone, how do today's weather get my screen, and where did it come from?
Timestamps:
0:00 - Intro
0:18 - Question of the day
1:48 - Defining the endpoints? Client and Server
2:43 - Mental picture for information traveling across internet: Skateboard ramp. Swimming pool
5:00 - Defining some terms: client and server
5:36 - Defining request and response
6:28 - Everything is binary
7:53 - Application Layer
8:55 - Physical layer
10:33 - Defining a 'session’
11:00 - Transport layer. TCP
12:00 - Network layer. IP.
12:44 - Each layer is distinct and independent
14:05 - What type of requests can I make?
16:55 - Looking at the POST and GET requests
18:00 - Packets
20:45 - TCP & IP roles
21:40 - Each device has its own IP address
22:40 - Review of the path of a request from client to server
23:40 - Short hops along the path
25:30 - More about packets and network layers
26:30 - Encapsulation
29:00 - Terms for the data at different network layers
29:45 - Real-time routing
31:20 - Internet travel is like note passing in class
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