diff --git a/unit02_symmetric/README.md b/unit02_symmetric/README.md
index adfc675..4a0cdb3 100644
--- a/unit02_symmetric/README.md
+++ b/unit02_symmetric/README.md
@@ -33,6 +33,8 @@ Back-up of content: [here](https://asecuritysite.com/csn11117/unit02)
 * Why EDE in 3DES?: [here](https://www.youtube.com/watch?v=ttayDxqfQkA)
 
 ## Sample exam questions
+**Note: There is no need to look at these questions just now. They are here to give you an idea of the test of exam question that might be asked **
+
 The following are sample exam questions for symmetric key:
 
 * Explain the differences between stream and block ciphers, and why salt is required within the encryption process.