Nginx installation - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the command to update the package list before installing Nginx.

Nginx

sudo [1] update

Drag options to blanks, or click blank then click option'

Ainstall

Bremove

Capt

Dupgrade

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'install' instead of 'apt' causes a command error.

Using 'remove' or 'upgrade' changes packages instead of updating the list.

The apt command is used to manage packages on Debian-based systems. Running sudo apt update refreshes the package list.

2fill in blank

medium

Complete the command to install Nginx using apt.

Nginx

sudo apt [1] nginx

Drag options to blanks, or click blank then click option'

Aupdate

Binstall

Cremove

Dupgrade

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'remove' deletes packages instead of installing.

Using 'update' only refreshes package lists, does not install.

The install option tells apt to install the specified package, here nginx.

3fill in blank

hard

Fix the error in the command to start the Nginx service.

Nginx

sudo systemctl [1] nginx

Drag options to blanks, or click blank then click option'

Astart

Bdisable

Creload

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' turns off the service.

Using 'disable' prevents the service from starting automatically.

To run Nginx, you need to start its service using systemctl.

4fill in blank

hard

Fill both blanks to check the status of the Nginx service.

Nginx

sudo systemctl [1] [2]

Drag options to blanks, or click blank then click option'

Astatus

Bnginx

Capache2

Drestart

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'restart' instead of 'status' changes the service state.

Using 'apache2' instead of 'nginx' checks the wrong service.

The command sudo systemctl status nginx shows if Nginx is running or stopped.

5fill in blank

hard

Fill all three blanks to enable Nginx to start automatically on boot and then verify it.

Nginx

sudo systemctl [1] nginx && sudo systemctl [2] nginx && sudo systemctl [3] nginx

Drag options to blanks, or click blank then click option'

Aenable

Bstart

Cstatus

Dstop

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'stop' disables the service instead of enabling it.

Checking status before starting may show it as inactive.

First, enable makes Nginx start on boot. Then start runs it now. Finally, status checks if it is running.

Practice

1. What is the primary purpose of installing Nginx on a server?

easy

A. To compile software code

B. To manage database connections

C. To serve web pages and handle web traffic

D. To monitor system hardware

Solution

1. Step 1: Understand Nginx's role

   Nginx is a web server software used to serve web pages and manage web traffic.

2. Step 2: Compare options

   The options for compiling software, managing database connections, and monitoring hardware are unrelated to Nginx's main function.

3. Final Answer:

   To serve web pages and handle web traffic -> Option C

4. Quick Check:

   Nginx = Web server [OK]

Hint: Nginx is a web server, not a database or compiler [OK]

Common Mistakes:

• Confusing Nginx with database software
• Thinking Nginx compiles code
• Assuming Nginx monitors hardware

2. Which command correctly installs Nginx on a Debian-based system?

easy

A. sudo yum install nginx

B. sudo apt-get install nginx

C. sudo pacman -S nginx

D. sudo dnf install nginx

Solution

1. Step 1: Identify package manager for Debian

   Debian-based systems use apt or apt-get for package management.

2. Step 2: Match command to Debian

   Only 'sudo apt-get install nginx' uses the correct package manager for Debian.

3. Final Answer:

   sudo apt-get install nginx -> Option B

4. Quick Check:

   Debian uses apt-get [OK]

Hint: Use apt-get for Debian, yum/dnf for RedHat, pacman for Arch [OK]

Common Mistakes:

• Using yum on Debian systems
• Using pacman on non-Arch systems
• Confusing dnf with apt-get

3. After installing Nginx, what is the output of sudo systemctl status nginx if Nginx is running correctly?

medium

A. Active: active (running)

B. nginx: command not found

C. Failed to start nginx.service: Unit not found.

D. Active: inactive (dead)

Solution

1. Step 1: Understand systemctl status output

   The command shows service status; 'active (running)' means the service is running.

2. Step 2: Identify correct output for running service

   Only Active: active (running) shows 'Active: active (running)', indicating Nginx is running properly.

3. Final Answer:

   Active: active (running) -> Option A

4. Quick Check:

   Running service = active (running) [OK]

Hint: Look for 'active (running)' in status output [OK]

Common Mistakes:

• Confusing inactive with active
• Thinking 'Unit not found' means running
• Misreading command not found as service status

4. You ran sudo systemctl start nginx but Nginx did not start. Which command helps you find the error logs to debug?

medium

A. sudo nginx -v

B. sudo apt-get update

C. sudo systemctl enable nginx

D. sudo journalctl -u nginx

Solution

1. Step 1: Identify command for viewing service logs

   To debug service start issues, check logs with 'journalctl -u nginx'.

2. Step 2: Eliminate unrelated commands

   'sudo nginx -v' shows version, 'sudo systemctl enable nginx' enables service on boot, 'sudo apt-get update' updates packages; none show logs.

3. Final Answer:

   sudo journalctl -u nginx -> Option D

4. Quick Check:

   Logs for debugging = journalctl -u nginx [OK]

Hint: Use journalctl -u nginx to see service logs [OK]

Common Mistakes:

• Using version check instead of logs
• Enabling service instead of checking logs
• Running package update unrelated to debugging

5. To ensure Nginx starts automatically after a server reboot, which command should you run?

hard

A. sudo systemctl enable nginx

B. sudo systemctl start nginx

C. sudo systemctl restart nginx

D. sudo systemctl stop nginx

Solution

1. Step 1: Understand systemctl enable

   Enabling a service configures it to start automatically on boot.

2. Step 2: Differentiate start and enable

   Start runs service now; enable sets auto-start on reboot. Restart and stop do not enable auto-start.

3. Final Answer:

   sudo systemctl enable nginx -> Option A

4. Quick Check:

   Auto-start service = systemctl enable [OK]

Hint: Enable service to auto-start on boot, start only runs now [OK]

Common Mistakes:

• Confusing start with enable
• Using restart instead of enable
• Stopping service instead of enabling