Which of the following commands can be used to activate a specific network interface?

Question

Options

• Aipup
• Bifup
• Cnet
• Dnetup

• A
  3% (2)
• B
  78% (52)
• C
  13% (9)
• D
  6% (4)

Explanation

ifup is the standard Unix/Linux command used to bring a network interface up (activate it), typically used as ifup eth0 or ifup enp3s0. It reads configuration from files like /etc/network/interfaces (Debian/Ubuntu) or /etc/sysconfig/network-scripts/ (RHEL/CentOS) to apply the correct settings.

The distractors are all fabricated: ipup does not exist as a standard command (it may be confused with ip, which is a different, more modern tool); net is not a Linux networking command (it exists in Windows for managing network services); and netup is entirely fictional with no standard implementation.

Memory tip: Think of ifup as "Interface Function: UP" - the if prefix stands for interface, and it pairs with its counterpart ifdown to deactivate an interface. If you remember ifconfig (the older interface configuration tool), the if prefix is the same pattern.

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