How do you assign a static IPv4 address 192.168.1.2/24 to interface ether1 using the RouterOS CLI?

• A. /ip address add address=192.168.1.2/24 interface=ether1
• B. /ip address add address=192.168.1.2/24 interface=ether0
• C. /ip address add address=192.168.2.2/24 interface=ether1
• D. /ip address add address=192.168.1.2/24 interface=ether9

Answer: (A)

Setting a static IPv4 address on a RouterOS interface is done with the /ip address add command, specifying the IP address in CIDR form and the interface to bind it to. The address 192.168.1.2/24 puts the device in the 192.168.1.0/24 subnet (mask 255.255.255.0), and binding it to ether1 associates that IP with the first Ethernet port you’d typically connect to the LAN. The command to use is: /ip address add address=192.168.1.2/24 interface=ether1. Using a different interface name like ether0 or ether9 would point to a different port (or may not exist), making the change ineffective. Using 192.168.2.2/24 would place the device in a different subnet, preventing reachability to devices on 192.168.1.0/24. Ensure there’s no IP conflict with another device on the LAN, and you can verify the assignment with /ip address print.