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abregman 2019-12-01 18:23:47 +02:00
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:information_source:  This repository contains interview questions on various DevOps and SRE related topics :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) :books:  To learn more about DevOps check the resources in [DevOpsBit.com](https://devopsbit.com)
@ -666,6 +666,10 @@ CSMA/CD algorithm:
<summary>What is a proxy? How it works? What do we need it for?</summary><br><b> <summary>What is a proxy? How it works? What do we need it for?</summary><br><b>
</b></details> </b></details>
<details>
<summary>What is TCP? How it works? What is the 3 way handshake?</summary><br><b>
</b></details>
<details> <details>
<summary>What is the difference between TCP and UDP?</summary><br><b> <summary>What is the difference between TCP and UDP?</summary><br><b>
@ -673,11 +677,15 @@ TCP establishes a connection between the client and the server to guarantee the
</b></details> </b></details>
<details> <details>
<summary>Explain "default gateway"</summary><br><b> <summary>True or False? TCP is better than UDP</summary><br><b>
</b></details> </b></details>
<details> <details>
<summary>How TCP works? What is the 3 way handshake?</summary><br><b> <summary>What TCP/IP protocols are you familiar with?</summary><br><b>
</b></details>
<details>
<summary>Explain "default gateway"</summary><br><b>
</b></details> </b></details>
<details> <details>
@ -728,6 +736,18 @@ TCP establishes a connection between the client and the server to guarantee the
<summary>What is NAT? How it works?</summary><br><b> <summary>What is NAT? How it works?</summary><br><b>
</b></details> </b></details>
<details>
<summary>What is latency?</summary><br><b>
</b></details>
<details>
<summary>What is bandwidth?</summary><br><b>
</b></details>
<details>
<summary>Which factors affect network performances</summary><br><b>
</b></details>
<a name="network-advanced"></a> <a name="network-advanced"></a>
#### :star: Advanced #### :star: Advanced
@ -767,6 +787,14 @@ TCP establishes a connection between the client and the server to guarantee the
<summary>Explain Spine & Leaf</summary><br><b> <summary>Explain Spine & Leaf</summary><br><b>
</b></details> </b></details>
<details>
<summary>What is Network Congestion? What can cause it?</summary><br><b>
</b></details>
<details>
<summary>What can you tell me about UDP packet format? What about TCP packet format? How is it different?</summary><br><b>
</b></details>
<details> <details>
<summary>Using Hamming code, what would be the code word for the following data word 100111010001101?</summary><br><b> <summary>Using Hamming code, what would be the code word for the following data word 100111010001101?</summary><br><b>
@ -1068,7 +1096,7 @@ Soft links can be created between different file systems while hard link can be
</b></details> </b></details>
<details> <details>
<summary>What is chroot?</summary><br><b> <summary>What is chroot? In what scenarios would you consider using it?</summary><br><b>
</b></details> </b></details>
##### Processes ##### Processes
@ -1387,7 +1415,7 @@ These system calls are reading the file <code>/my/file</code> and 5 is the file
</b></details> </b></details>
<details> <details>
<summary>What are cgroups? In what scenario would you use them?</summary><br><b> <summary>What are cgroups?</summary><br><b>
</b></details> </b></details>
<details> <details>
@ -3545,7 +3573,7 @@ the pseudo table to retrieve the sum of the prices spent by each customer, then
</b></details> </b></details>
<details> <details>
<summary>Do you think open source project is more secured when compared to a proprietary software?</summary><br><b> <summary>What is DNS Spoofing? How to prevent it?</summary><br><b>
</b></details> </b></details>
<details> <details>
@ -3811,6 +3839,18 @@ While an A record points a domain name to an IP address, a PTR record does the o
<summary>Is DNS using TCP or UDP?</summary><br><b> <summary>Is DNS using TCP or UDP?</summary><br><b>
</b></details> </b></details>
<details>
<summary>What is Round Robin DNS?</summary><br><b>
</b></details>
<details>
<summary>What is DNS Record TTL? Why do we need it?</summary><br><b>
</b></details>
<details>
<summary>What is a zone? What types of zones are there?</summary><br><b>
</b></details>
## General ## General
Although the following questions are not DevOps related, they are still quite common so it's better to prepare for them as well. Although the following questions are not DevOps related, they are still quite common so it's better to prepare for them as well.