What is the purpose of a loopback interface A. To simulate a network or an IP host B. To enable multiple protocols C. To configure an IP address for a physical interface D. To restart a device
Question
What is the purpose of a loopback interface A. To simulate a network or an IP host B. To enable multiple protocols C. To configure an IP address for a physical interface D. To restart a device
Solution
The purpose of a loopback interface is A. To simulate a network or an IP host. A loopback interface is a virtual interface that is always up and reachable as long as at least one of the outbound interfaces is up. It is usually used for troubleshooting and network management. For example, it can be used to simulate a network for testing purposes without having to physically connect to the network.
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