The Complete Practical Docker Guide - Exploring IP address settings

The video tutorial explains how to verify host names and IP addresses on a Linux host using various commands. It highlights the use of Docker containers, specifically the Alpine image, to access necessary IP utilities. The tutorial covers commands like 'hostname', 'ip address', and 'ip route' to gather network information, including loopback interfaces and routing tables. It also demonstrates the use of 'ping' for connectivity verification. The session concludes with a brief overview of upcoming topics, including trace route and DNS lookups.

What is the main reason the 'ping' command is not found in the Ubuntu Docker container?

• The network is not configured.

• The command is deprecated.

• The command syntax is incorrect.

• The container lacks IP utilities by default.

Why is the Alpine Docker image preferred for network utilities?

• It is the largest Linux system available.

• It comes with necessary utilities pre-installed.

• It requires manual installation of utilities.

• It is more secure than other images.

What does the 'hostname' command display in a Docker container?

• The public IP address.

• A set of hexadecimal characters.

• The MAC address.

• The domain name.

What is the purpose of the 'hostname -I' command?

• To change the host name.

• To list all network interfaces.

• To display the MAC address.

• To show the IP address assigned to the host.

What is the IP address of the loopback interface?

• 10.0.0.1

• 127.0.0.1

• 172.16.0.1

• 192.168.1.1

What command is used to verify connectivity with the loopback address?

• ifconfig

• nslookup

• ping

• traceroute

What does the 'ip address' command provide?

• Firewall settings.

• List of all network interfaces.

• DNS server details.

• Routing table information.

What is the purpose of the 'ip route' command?

• To display the routing table.

• To change the host name.

• To list all open ports.

• To configure DNS settings.

Which command provides similar information to 'ip address' but in a different format?

• traceroute

• ping

• ifconfig

• nslookup

How can you filter command output to show only specific information?

• Using the 'sed' command.

• Using the 'sort' command.

• Using the 'grep' command.

• Using the 'awk' command.