Repos-que-me-gustan/devops-exercises
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Add a couple of Linux and Security questions

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abregman 2019-12-18 22:38:43 +02:00
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@ -2,7 +2,7 @@
:information_source:  This repository contains questions on various DevOps and SRE related topics
:bar_chart:  There are currently **640** questions
:bar_chart:  There are currently **650** questions
:books:  To learn more about DevOps check the resources in [DevOpsBit.com](https://devopsbit.com)
@ -207,6 +207,20 @@ Stateful applications depend on the storage to save state and data, typically da
<summary>Describe me the architecture of service/app/project/... you designed and/or implemented</summary><br><b>
</b></details>
<details>
<summary>What types of tests are you familiar with?</summary><br><b>
Styling, unit, functional, API, integration, smoke, scenario, ...
You should be able to explain those that you mention.
</b></details>
<details>
<summary>You need to install periodically the same package on different operating systems (Ubuntu, RHEL, ...). How would you do it?</summary><br><b>
It can be as simple as one Ansible (or other CM tool) task that runs periodically with Cron. In more advanced cases, perhaps a CI system.
</b></details>
##### SRE
<details>
@ -1071,6 +1085,14 @@ Hardware -> Kernel -> <u>Daemons</u>, System Libraries, Server Display.
<summary>What is a Linux kernel module and how do you load a new module?</summary><br><b>
</b></details>
<details>
<summary>Explain user space and kernel space</summary><br><b>
</b></details>
<details>
<summary>Wildcards are implemented on user or kernel space?</summary><br><b>
</b></details>
<details>
<summary>What is KVM?</summary><br><b>
</b></details>
@ -1383,7 +1405,7 @@ This is a great article on the topic: https://www.computerhope.com/jargon/f/file
<summary>Explain Kernel OOM</summary><br><b>
</b></details>
##### Security
##### Linux Security
<details>
<summary>What is chroot? In what scenarios would you consider using it?</summary><br><b>
@ -1561,6 +1583,14 @@ Re-install the OS IS NOT the right answer :)
<summary>What is sudo? How do you set it up?</summary><br><b>
</b></details>
##### Random and Strange :)
<details>
<summary>Give 5 commands which are two letters long</summary><br><b>
ls, wc, dd, df, du, ps, ip, ...
</b></details>
<a name="linux-advanced"></a>
#### :star: Advanced
@ -1584,6 +1614,14 @@ read(5, "file content")
These system calls are reading the file <code>/my/file</code> and 5 is the file descriptor number.
</b></details>
<details>
<summary>What system call is used for listing files?</summary><br><b>
</b></details>
<details>
<summary>What system call is used for creating a new process?</summary><br><b>
</b></details>
<details>
<summary>What is the difference between a process and a thread?</summary><br><b>
</b></details>
@ -3710,6 +3748,12 @@ Using the keyword <code>read</code> so for example <code>read x</code> will wait
<summary>Write a script which will list the differences between two directories</summary><br><b>
</b></details>
##### Practical
<details>
<summary>Write a script to determine whether a host is up or down</summary><br><b>
</b></details>
<a name="shell-scripting-advanced"></a>
#### Advanced
@ -4152,9 +4196,16 @@ the pseudo table to retrieve the sum of the prices spent by each customer, then
<summary>What is DNS Spoofing? How to prevent it?</summary><br><b>
</b></details>
<details>
<summary>What can you tell me about Stuxnet?</summary><br><b>
</b></details>
<details>
<summary>What can you tell me about Spectre?</summary><br><b>
</b></details>
<details>
<summary>Explain OAuth</summary><br><b>
<a name="puppet-advanced"></a>
</b></details>
<details>