Which legacy Linux/Mac command displays network interface configuration and has been replaced by a modern option on newer Linux systems?

Which legacy Linux/Mac command displays network interface configuration and has been replaced by a modern option on newer Linux systems?

• A. Ipconfig
• B. Ifconfig
• C. Ip Addr Show
• D. Traceroute

Answer: (B)

Displaying network interface configuration on Linux has long relied on the ifconfig command. This older tool from the net-tools package shows details like IP address, netmask, broadcast, and MAC for each interface and could also be used to configure interfaces in the past. On newer Linux systems, that role has shifted to the ip command from the iproute2 package, with the modern equivalent for listing addresses being ip addr show (often written as ip a). This provides more flexible, consistent output and supports newer networking features. The other options don’t fit: ipconfig is a Windows utility, Traceroute is used for path discovery to a host, and ip addr show is the modern replacement rather than the legacy one. The legacy command described here is ifconfig.

Displaying network interface configuration on Linux has long relied on the ifconfig command. This older tool from the net-tools package shows details like IP address, netmask, broadcast, and MAC for each interface and could also be used to configure interfaces in the past. On newer Linux systems, that role has shifted to the ip command from the iproute2 package, with the modern equivalent for listing addresses being ip addr show (often written as ip a). This provides more flexible, consistent output and supports newer networking features. The other options don’t fit: ipconfig is a Windows utility, Traceroute is used for path discovery to a host, and ip addr show is the modern replacement rather than the legacy one. The legacy command described here is ifconfig.