What is a VirtualHost in Apache Web Server?

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Problem scenario
You do not think that Apache web server does virtualization (like a hypervisor). But you see the term Virtual Host when you read about Apache web server configurations. What is a VirtualHost in the context of Apache web server?

Solution

“Apache Virtual Hosts A.K.A Virtual Host(Vhost) are used to run more than one web site(domain) using a single IP address.

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Why Is a Linux File Getting a Different Group Name and Not The Group of the User That Created The File?

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Problem scenario
A Linux user creates a file in a directory and no other manual commands are run. The file is associated with a group that is not the group of the user. What could be the reason?

Answer
The directory had a command like this run:

sudo chgrp group2 /path/to/directory

Then the set GID bit was configured. The chmod 2755 /path/to/directory command would set the GID bit because of the “2” in the numeric notation.

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What is a group_var or Group Variable in Ansible?

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Question
You have heard of Group Variables in Ansible. What are they?

Answer
They are like global variables assigned in a modular way (like Ansible roles). They are ideal when you have Ansible playbooks that run against many different servers. Rather than have a regular variable in a playbook, group variables are taken from a group_vars/ directory. To read more about them,

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How Do You Configure Snyk’s Threshold Level in Azure DevOps Pipelines?

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Problem scenario
You are troubleshooting a pipeline in Azure DevOps. You look at the task’s log output. You see a security-threshold flag in a CLI with the value of “low”, “medium”, “high” or “critical” that you think is incorrect or discrepant with another setting. How do you get the flag to be set to the security threshold level of your choice?

Background
The ultimate Snyk command that is run (or commands that are run) is (or are) created from various underlying settings,

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How Do You Get a Memory Dump of a Specific Process in Windows?

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Problem scenario
You want to generate and retrieve a memory dump of a specific process on a Windows server. How to you take or get a memory dump of a given process?

Solution
1. Launch Task Manager as Administrator. Search for Task Manager and right click it and go to “Run as Administrator”

2. Go to “Create dump file”

3.

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How Do You Get the Internet and/or NIC on Your Windows Workstation to Work?

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Problem scenario
You rebooted your Windows laptop. You are not getting any network. The internet is unreachable. The NIC’s lights are off. What should you do?

Possible Solution #1
Use WiFi. Completely bypass your network interface port.

Possible Solution #2
1. Reboot your computer.
2. Press Esc to enter the Startup Menu.
3.

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What Is The Most Important Exercise in Weight Training?

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Question
In the context of weight lifting (or resistance training), what single exercise is the most important?

Answer
The squat (according to page 7 of Starting Strength). Page 19 says “There is simply no other exercise, and certainly no machine, that produces the level of central nervous system activity, improved balance and coordination, skeletal loading and bone density enhancement,

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