diff --git a/src/rhcsa.md b/src/rhcsa.md
index d3c3e52..00741f0 100644
--- a/src/rhcsa.md
+++ b/src/rhcsa.md
@@ -434,4 +434,27 @@ sudo less /var/log/messages # Display the kernel messages
 
 ```bash
 systemctl list-units --type=target
+
+### Changing the default target ###
+sudo systemctl set-default multi-user.target # Set the default target to multi-user.target
+sudo systemctl set-default graphical.target # Set the default target to graphical.target
+sudo systemctl set-default basic.target # Set the default target to basic.target
+```
+
+### Run Level
+
+> Note: Run level is a way to manage the boot process of a system. It is a way to manage the boot process of a system.
+> 0 is the emergency mode. 
+> 1 is the single user mode.
+> 2 is the multi-user mode. 
+> 3 is the multi-user mode. 
+> 4 is the multi-user mode. (unused)
+> 5 is the graphical mode.
+> 6 is the reboot mode.
+
+```bash
+runlevel # Display the current run level
+sudo systemctl get-default # Display the default target
+sudo systemctl set-default runlevel3.target # Set the default target to runlevel3.target
+sudo telinit 3 # Change to runlevel 3
 ```
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