diff --git a/README.md b/README.md
index 7045dd8..29a5f42 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
:information_source: This repository contains interview questions on various DevOps and SRE related topics
-:bar_chart: There are currently **532** questions
+:bar_chart: There are currently **541** questions
:books: To learn more about DevOps check the resources in [DevOpsBit.com](https://devopsbit.com)
@@ -10,6 +10,8 @@
:pencil: You can add more questions & answers by submitting pull requests :) You can read more about it [here](CONTRIBUTING.md)
+:warning: The purpose of this repo is to help you test your knowledge and/or prepare for interviews. It doesn't represents a DevOps interview and it doesn't mean the questions here will be asked in your interview
+
:cn: You can find a [中文](README-zh_CN.md) Chinese translation right [here](README-zh_CN.md)
****
@@ -3703,6 +3705,50 @@ As in NoSQL a Document is a JSON object which holds data on a unit in your app.
* _type
+
+Explain Mapping
+
+
+
+Explain Shards
+
+
+
+Explain Replicas
+
+
+
+Explain Elasticsearch query syntax (Booleans, Fields, Ranges)
+
+
+
+What are Logstash plugins? What plugins types are there?
+
+ * Input Plugins - how to collect data from different sources
+ * Filter Plugins - processing data
+ * Output Plugins - push data to different outputs/services/platforms
+
+
+
+What are Logstash Codecs?
+
+
+##### Kibana
+
+
+What visualization types are supported/included in Kibana?
+
+
+
+What visualization type would you use for statistical outliers (e.g. Heat Map)
+
+
+##### Beats
+
+
+What is Filebeat?
+
+
#### :star: Advnaced