From d19f560cf5271f300eba76506ba6c0288248a7db Mon Sep 17 00:00:00 2001
From: Isaac Shoebottom <ir.shoebottom@gmail.com>
Date: Fri, 26 Jan 2024 12:01:10 -0400
Subject: [PATCH] 2024-01-26 12:01:09

---
 .obsidian/workspace.json                   | 10 ++++----
 UNB/Year 4/Semester 2/CS3873/2024-01-26.md | 28 ++++++++++++++++++++++
 2 files changed, 33 insertions(+), 5 deletions(-)
 create mode 100644 UNB/Year 4/Semester 2/CS3873/2024-01-26.md

diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 62487f2..3ab1918 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -13,7 +13,7 @@
             "state": {
               "type": "markdown",
               "state": {
-                "file": "UNB/Year 4/Semester 2/STAT2593/2024-01-26.md",
+                "file": "UNB/Year 4/Semester 2/CS3873/2024-01-26.md",
                 "mode": "source",
                 "source": false
               }
@@ -85,7 +85,7 @@
             "state": {
               "type": "backlink",
               "state": {
-                "file": "UNB/Year 4/Semester 2/STAT2593/2024-01-26.md",
+                "file": "UNB/Year 4/Semester 2/CS3873/2024-01-26.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -102,7 +102,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
-                "file": "UNB/Year 4/Semester 2/STAT2593/2024-01-26.md",
+                "file": "UNB/Year 4/Semester 2/CS3873/2024-01-26.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -125,7 +125,7 @@
             "state": {
               "type": "outline",
               "state": {
-                "file": "UNB/Year 4/Semester 2/STAT2593/2024-01-26.md"
+                "file": "UNB/Year 4/Semester 2/CS3873/2024-01-26.md"
               }
             }
           },
@@ -159,6 +159,7 @@
   "active": "64b233ae6a058454",
   "lastOpenFiles": [
     "UNB/Year 4/Semester 2/STAT2593/2024-01-26.md",
+    "UNB/Year 4/Semester 2/CS3873/2024-01-26.md",
     "UNB/Year 4/Semester 2/CS2333/2024-01-22.md",
     "UNB/Year 4/Semester 2/CS2333/2024-01-24.md",
     "UNB/Year 4/Semester 2/CS3873/2024-01-24.md",
@@ -190,7 +191,6 @@
     "Semester 1/CS3418/11-27-2023.md",
     "Semester 1/CS3418/11-24-2023.md",
     "Semester 1/CS3418/11-15-2023.md",
-    "Semester 1/CS3418/11-13-2023.md",
     "Semester 1/CS2418",
     "Semester 1/CS3418"
   ]
diff --git a/UNB/Year 4/Semester 2/CS3873/2024-01-26.md b/UNB/Year 4/Semester 2/CS3873/2024-01-26.md
new file mode 100644
index 0000000..b988f07
--- /dev/null
+++ b/UNB/Year 4/Semester 2/CS3873/2024-01-26.md	
@@ -0,0 +1,28 @@
+Lecture Topic: Web Protocols
+# Encapsulation/Decapsulation
+Each layer of a network adds a header, that encapsulates the rest of the data
+When a packet is decapsulated, each layer strips away its header after it is done processing
+
+# Network Applications
+Applications are *distributed* since they involve multiple end systems that exchange dat which each other
+
+## Application Architectures
+Dictates how applications interact on a network
+- Client/Server architecture
+	- Server: An always on host which services requests from many other hosts
+		- Data is often stored on the server
+		- Data centers can be used to create powerful virtual servers
+	- Clients: Connect through to the server
+- Peer to peer architecture
+	- No always on server
+	- Arbitrary end systems directly communicate
+	- Peers request service from other peers and provide service in return to other peers
+		- Self scalability: New peers bring new service capacity as well as new service demands
+	- Peers are intermittently connected and change IP addresses (complex management)
+	- Examples include BitTorrent (P2P file sharing)
+
+# Basics of Web and HTTP
+Invented by Tim Burners-Lee
+Client Server model
+- Client is a web browser that requests and receives, and then displays web objects
+- Server is a web server that sends objects in response to