Introduction:
The ipconfig command in Microsoft Windows is a powerful tool that allows users to view and modify various TCP/IP network configuration settings. It provides information about the current network configuration, such as IP address, subnet mask, default gateway, DNS servers, and more. Additionally, ipconfig also enables users to modify DHCP (Dynamic Host Configuration Protocol) and DNS (Domain Name System) settings.

Display all current TCP/IP network configuration values:
One of the main functions of ipconfig is to display all the current TCP/IP network configuration values. This includes the IP address, subnet mask, default gateway, and other relevant information. By running the ipconfig command in the command prompt, users can quickly view their network configuration and troubleshoot any issues related to connectivity or network settings.

Modify DHCP settings:
DHCP is a protocol that automatically assigns IP addresses and other network configuration parameters to devices in a network. With ipconfig, users can modify DHCP settings to either enable or disable the automatic assignment of IP addresses. This can be useful in situations where a static IP address is required, or when troubleshooting network connectivity issues.

Modify DNS settings:
DNS is responsible for translating domain names into IP addresses. By default, Windows uses DNS servers provided by the Internet Service Provider (ISP). However, with ipconfig, users can modify the DNS settings and specify custom DNS servers. This can be beneficial in cases where users want to use alternate DNS servers for improved performance, security, or to bypass DNS-based restrictions.

All of the mentioned:
In summary, the correct answer is option 'D' - All of the mentioned. The ipconfig command in Microsoft Windows allows users to display all current TCP/IP network configuration values, modify DHCP settings, and modify DNS settings. It is a versatile tool that provides users with the ability to view and modify various network settings, making it a valuable asset for network troubleshooting and customization.

D