diff --git a/.obsidian/workspace b/.obsidian/workspace
index 62338f8..bdeea73 100644
--- a/.obsidian/workspace
+++ b/.obsidian/workspace
@@ -88,14 +88,14 @@
   "active": "bc6e8ad9aa0f44c3",
   "lastOpenFiles": [
     "School/Analyse/Layers/2. Datalink Layer.md",
+    "School/Analyse/Network Software.md",
     "School/Analyse/Network Types.md",
+    "School/Analyse/Computer Networks.md",
     "School/Analyse/Images/distortion.png",
     "School/Analyse/Images/noise-signal.png",
     "README.md",
     "School/Analyse/Layers/3. Network Layer.md",
     "School/Analyse/Layers/4. Transport Layer.md",
-    "School/Analyse/Layers/1. Physical Layer.md",
-    "School/Analyse/Comminucation Mediums.md",
-    "School/Analyse/Images/modulation-amplitude.png"
+    "School/Analyse/Layers/1. Physical Layer.md"
   ]
 }
\ No newline at end of file
diff --git a/School/Analyse/Layers/2. Datalink Layer.md b/School/Analyse/Layers/2. Datalink Layer.md
index 698647f..e0b527f 100644
--- a/School/Analyse/Layers/2. Datalink Layer.md	
+++ b/School/Analyse/Layers/2. Datalink Layer.md	
@@ -32,3 +32,23 @@ Ethernet frame has the following format:
 ![[ethernet-frame.png]]
 
 ## Wireless networks
+Wireless networks do not use a physical medium for data transmission. The data is send through radio waves.
+
+- Each member of a wireless network is called a station.
+
+Networks are implemented in different sizes:
+- Wireless local area networks (WLAN)
+- Wireless Metropolitan Area Networks (WMAN)
+- Wireless Wide Area Networks (WWAN)
+
+### BSS Network
+A BSS is a network with a specific station called Access Point.
+
+All transmissions from a station to another are trough the Access Point.
+
+Access Points also connect the network (BSS) other networks, hence the name internet. 
+
+### AD-HOC Networks
+AD-HOC networks do not have a central node (access point).
+
+Every station can send data direct
\ No newline at end of file