diff --git a/src/questions/network-questions.md b/src/questions/network-questions.md
index 0249740..5fc33b8 100644
--- a/src/questions/network-questions.md
+++ b/src/questions/network-questions.md
@@ -15,3 +15,4 @@ permalink: /questions/network-questions/index.html
   * ETag
   * X-Frame-Options
 * What are HTTP methods? List all HTTP methods that you know, and explain them.
+* What is domain pre-fetching and how does it help with performance?