Cisco Certified Network Associate (CCNA) Practice Exam

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Prepare for the Cisco Certified Network Associate (CCNA) Practice Exam. Test your knowledge with our interactive quizzes featuring multiple choice questions, hints, and explanations. Equip yourself for success!

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Which command is used to set the IP address and subnet mask on a serial interface during configuration?

ip address
set ip
assign address
config ip

The correct answer is: ip address

The command "ip address" is used to configure the IP address and subnet mask on a serial interface in Cisco devices. When you enter this command in the interface configuration mode, you provide the desired IP address followed by the subnet mask, enabling the interface to participate in IP networking on the subnet specified. For instance, using the command in the format "ip address 192.168.1.1 255.255.255.0" would assign the IP address 192.168.1.1 with a subnet mask of 255.255.255.0 to the interface being configured. This command is essential for establishing network connectivity and ensuring that the interface can communicate with hosts within its assigned IP range. The other options do not represent valid commands in Cisco's command-line interface for this purpose. Choices like "set ip," "assign address," and "config ip" are not recognized commands for configuring IP addresses in the context of serial interfaces.