diff --git a/README.md b/README.md
index 29a5f42..7e5b77e 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 **541** questions
+:bar_chart: There are currently **551** questions
:books: To learn more about DevOps check the resources in [DevOpsBit.com](https://devopsbit.com)
@@ -666,6 +666,10 @@ CSMA/CD algorithm:
What is a proxy? How it works? What do we need it for?
+
+What is TCP? How it works? What is the 3 way handshake?
+
+
What is the difference between TCP and UDP?
@@ -673,11 +677,15 @@ TCP establishes a connection between the client and the server to guarantee the
-Explain "default gateway"
+True or False? TCP is better than UDP
-How TCP works? What is the 3 way handshake?
+What TCP/IP protocols are you familiar with?
+
+
+
+Explain "default gateway"
@@ -728,6 +736,18 @@ TCP establishes a connection between the client and the server to guarantee the
What is NAT? How it works?
+
+What is latency?
+
+
+
+What is bandwidth?
+
+
+
+Which factors affect network performances
+
+
#### :star: Advanced
@@ -767,6 +787,14 @@ TCP establishes a connection between the client and the server to guarantee the
Explain Spine & Leaf
+
+What is Network Congestion? What can cause it?
+
+
+
+What can you tell me about UDP packet format? What about TCP packet format? How is it different?
+
+
Using Hamming code, what would be the code word for the following data word 100111010001101?
@@ -1068,7 +1096,7 @@ Soft links can be created between different file systems while hard link can be
-What is chroot?
+What is chroot? In what scenarios would you consider using it?
##### Processes
@@ -1387,7 +1415,7 @@ These system calls are reading the file /my/file
and 5 is the file
-What are cgroups? In what scenario would you use them?
+What are cgroups?
@@ -3545,7 +3573,7 @@ the pseudo table to retrieve the sum of the prices spent by each customer, then
-Do you think open source project is more secured when compared to a proprietary software?
+What is DNS Spoofing? How to prevent it?
@@ -3811,6 +3839,18 @@ While an A record points a domain name to an IP address, a PTR record does the o
Is DNS using TCP or UDP?
+
+What is Round Robin DNS?
+
+
+
+What is DNS Record TTL? Why do we need it?
+
+
+
+What is a zone? What types of zones are there?
+
+
## General
Although the following questions are not DevOps related, they are still quite common so it's better to prepare for them as well.