diff --git a/docs/source/simulation_components/system/applications/web_browser.rst b/docs/source/simulation_components/system/applications/web_browser.rst
index 3ff12b58..88527caf 100644
--- a/docs/source/simulation_components/system/applications/web_browser.rst
+++ b/docs/source/simulation_components/system/applications/web_browser.rst
@@ -66,7 +66,7 @@ The :ref:`DNSClient` must be configured to use the :ref:`DNSServer`. The :ref:`D
     web_browser.run()
 
     # configure the WebBrowser
-    web_browser.target_url = "arcd.com"
+    web_browser.target_url = "example.com"
 
     # once DNS server is configured with the correct domain mapping
     # this should work
@@ -80,15 +80,13 @@ Via Configuration
     simulation:
         network:
             nodes:
-                - ref: example_computer
-                hostname: example_computer
-                type: computer
-                ...
-                applications:
-                    - ref: web_browser
-                    type: web-browser
-                    options:
-                        target_url: http://arcd.com/
+            - hostname: example_computer
+            type: computer
+            ...
+            applications:
+            - type: web-browser
+            options:
+                target_url: http://example.com/
 
 Configuration
 =============
@@ -101,11 +99,10 @@ The URL that the ``WebBrowser`` will request when ``get_webpage`` is called with
 
 The URL can be in any format so long as the domain is within it e.g.
 
-The domain ``arcd.com`` can be matched by
+The domain ``example.com`` can be matched by
 
-- http://arcd.com/
-- http://arcd.com/users/
-- arcd.com
+- http://example.com/
+- example.com
 
 
 ``Common Attributes``
diff --git a/docs/source/simulation_components/system/services/dns_server.rst b/docs/source/simulation_components/system/services/dns_server.rst
index 179d0837..53b47c54 100644
--- a/docs/source/simulation_components/system/services/dns_server.rst
+++ b/docs/source/simulation_components/system/services/dns_server.rst
@@ -20,7 +20,7 @@ Key capabilities
 Usage
 =====
 - Install on a Node via the ``SoftwareManager`` to start the database service.
-- Service runs on TCP port 53 by default. (TODO: TCP for now, should be UDP in future)
+- Service runs on TCP port 53 by default.
 
 Implementation
 ==============
@@ -58,7 +58,7 @@ Python
     dns_server.start()
 
     # configure DatabaseService
-    dns_server.dns_register("arcd.com", IPv4Address("192.168.10.10"))
+    dns_server.dns_register("example.com", IPv4Address("192.168.10.10"))
 
 
 Via Configuration
@@ -69,17 +69,15 @@ Via Configuration
     simulation:
         network:
             nodes:
-                - ref: example_server
-                hostname: example_server
-                type: server
-                ...
-                services:
-                    - ref: dns_server
-                    type: dns-server
-                    options:
-                        domain_mapping:
-                            arcd.com: 192.168.0.10
-                            another-example.com: 192.168.10.10
+            - hostname: example_server
+            type: server
+            ...
+            services:
+            - type: dns-server
+            options:
+                domain_mapping:
+                    example.com: 192.168.0.10
+                    another-example.com: 192.168.10.10
 
 Configuration
 =============
@@ -90,7 +88,7 @@ Configuration
 
 Domain mapping takes the domain and IP Addresses as a key-value pairs i.e.
 
-If the domain is "arcd.com" and the IP Address attributed to the domain is 192.168.0.10, then the value should be ``arcd.com: 192.168.0.10``
+If the domain is "example.com" and the IP Address attributed to the domain is 192.168.0.10, then the value should be ``example.com: 192.168.0.10``
 
 The key must be a string and the IP Address must be a valid octet i.e. in the range of ``0.0.0.0`` and ``255.255.255.255``.