diff --git a/w11/NetworkException.java b/w11/NetworkException.java
new file mode 100644
index 0000000..0fb8e5e
--- /dev/null
+++ b/w11/NetworkException.java
@@ -0,0 +1,11 @@
+package com.example.datacollect.exception;
+
+public class NetworkException extends CrawlerException {
+    public NetworkException(String message) {
+        super(message);
+    }
+
+    public NetworkException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
\ No newline at end of file