A Linux system administrator needs to temporarily take the enp0s3 network interface offline to perform a maintenance task. The interface must be brought down gracefully without affecting other interfaces. Which command should the administrator use?
ip link set enp0s3 down
ifconfig enp0s3 down
ip addr del dev enp0s3
ip link down enp0s3
The correct command is ip link set enp0s3 down. This command uses the ip utility, which is the modern standard for network configuration in Linux, to change the state of a network link device. The set subcommand is used to modify the attributes of the device, and down sets the administrative state of the interface to offline. ip link down enp0s3 is incorrect because it is missing the required set keyword. ifconfig enp0s3 down would accomplish the task on older systems or those with net-tools installed, but ifconfig is a deprecated utility and has been replaced by the ip command. ip addr del dev enp0s3 is incorrect as this command is used to delete an IP address from an interface, not to bring the entire interface link down. The link would remain active.
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