Add a couple of questions
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abregman
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README.md
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README.md
@ -2,7 +2,7 @@
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:information_source: This repo contains questions and exercises on various technical topics, sometimes related to DevOps and SRE :)
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:bar_chart: There are currently **1359** questions
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:bar_chart: There are currently **1380** questions
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:busts_in_silhouette: [Join](https://www.facebook.com/groups/538897960007080) our [Facebook group](https://www.facebook.com/groups/538897960007080) for additional exercises, articles and more resources on DevOps
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@ -75,9 +75,6 @@
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<td align="center"><a href="#HR"><img src="images/HR.png" width="110px;" height="75px;" alt="HR"/><br /><b>HR</b></a></td>
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<td align="center"><a href="#exercises"><img src="images/exercises.png" width="110px;" height="75px;" alt="Exercises"/><br /><b>Exercises</b></a></td>
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</tr>
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<tr>
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<td align="center"><a href="#redis"><img src="images/redis.png" width="75px;" height="75px;" alt="Redis"/><br /><b>Redis</b></a></td>
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</tr>
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</table>
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</center>
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<!-- markdownlint-enable -->
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@ -151,7 +148,11 @@ For more info please read [here](https://www.atlassian.com/continuous-delivery/c
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</b></details>
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<details>
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<summary>What systems and/or tools are you using for the following?:
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<summary>Where do you store CI/CD pipeline? (Application repository, one central repository, ...)? Why?</summary><br><b>
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</b></details>
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<details>
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<summary>What systems and/or tools are you using for the following areas/tasks? Why?
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* CI/CD
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* Provisioning infrastructure
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@ -3012,14 +3013,25 @@ This is a great article on the topic: https://www.computerhope.com/jargon/f/file
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<summary>Do you have experience with hardening servers? Can you describe the process?</summary><br><b>
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</b></details>
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##### Linux - Networking
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##### Linux Networking
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<details>
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<summary>How to list all interfaces?</summary><br><b>
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<summary>How to list all the interfaces?</summary><br><b>
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</b></details>
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<details>
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<summary>How to disable an interface?</summary><br><b>
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<summary>What is the loopback (lo) interface?</summary><br><b>
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</b></details>
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<details>
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<summary>What the following commands are used for?
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* ip addr
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* ip route
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* ip link
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* ping
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* netstat
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* traceroute</summary><br><b>
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</b></details>
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<details>
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@ -3102,6 +3114,25 @@ It is a network utility that analyses and may inject tasks into the data-stream
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One way would be `ping6 ff02::1`
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</b></details>
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<details>
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<summary>What is network interface bonding and do you know how it's performed in Linux?</summary><br><b>
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</b></details>
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<details>
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<summary>What network bonding modes are there?</summary><br><b>
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There a couple of modes:
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* balance-rr: round robing bonding
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* active-backup: a fault tolerance mode where only one is active
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* balance-tlb: Adaptive transmit load balancing
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* balance-alb: Adaptive load balancing
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</b></details>
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<details>
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<summary>What is a bridge? How it's added in Linux OS?</summary><br><b>
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</b></details>
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##### Linux DNS
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<details>
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@ -3209,7 +3240,11 @@ Upstart: add Upstart init script at /etc/init/service.conf
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Nginx, Apache httpd.
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</b></details>
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##### Users
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##### Linux Users and Groups
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<details>
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<summary>What is a "superuser" (or root user)? How is it different from regular users?</summary><br><b>
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</b></details>
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<details>
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<summary>How do you create users? Where user information is stored?</summary><br><b>
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@ -3243,7 +3278,7 @@ You can also add a user and then edit /etc/passwd.
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</b></details>
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<details>
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<summary>How to switch to another user? How to switch to root?</summary><br><b>
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<summary>How to switch to another user? How to switch to the root user?</summary><br><b>
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su command.
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Use su - to switch to root
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@ -3270,7 +3305,16 @@ Re-install the OS IS NOT the right answer :)
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<details>
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<summary>How to see a list of who logged-in to the system?</summary><br><b>
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Using the last command.
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Using the `last` command.
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</b></details>
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<details>
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<summary>Explain what each of the following commands does:
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* useradd
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* usermod
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* whoami
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* id</summary><br><b>
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</b></details>
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#### Linux - Hardware
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@ -6861,6 +6905,16 @@ Alert manager is responsible for alerts ;)
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## Git
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<details>
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<summary>How do you know if directory you are in is a git repository?</summary><br><b>
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You can check if there is a ".git" directory.
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</b></details>
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<details>
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<summary>How to check if a file is tracked and if not, then track it?</summary><br><b>
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</b></details>
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<details>
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<summary>What is the difference between <code>git pull</code> and <code>git fetch</code>?</summary><br><b>
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@ -10188,15 +10242,6 @@ Raspberry Pi
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<summary>What types of storage are there?</summary><br><b>
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</b></details>
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## Redis
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<details>
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<summary>What is Redis?</summary><br><b>
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* In memory data structure store
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* Open Source
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</b></details>
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## Big Data
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<details>
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