TestOut Linux Pro Practice Test 2025 – All-in-One Guide to Master Your Certification!

Question: 1 / 400

What is the function of the command 'ip route add default'?

To set a new MTU size

To define the routing table's default gateway

The command 'ip route add default' is used to define the default gateway in the routing table of a Linux-based system. When this command is executed, it instructs the system where to send packets when the destination address does not match any other entries in the routing table. Essentially, it sets up a fallback route for outbound network traffic, which is critical for enabling communication outside the local network.

Specifying a default gateway is crucial for devices that need to access external networks, as it tells the system where to send traffic that does not have a defined path. Without a default gateway, the device would be unable to communicate with devices outside its local network segment.

The other options do not align with the function of the command: setting a new MTU size is unrelated to routing, displaying current IP addresses pertains to a different set of commands, and removing a default gateway is not what 'ip route add default' accomplishes.

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To display current IP addresses

To remove a default gateway

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