The reason why OSPF is more commonly used than RIP is that OSPF has a device authentication function and is more secure.

Which of the following are multi-user operating systems? (Multiple choice)

Write a rule with iptables that does not allow 172.16.0.0.0/16 to access this device, which rule is correct?

Social engineering is a kind of harmful means such as deception and harm through psychological traps such as psychological weakness, instinctual reaction, curiosity, trust, and greed of the victim.

Which item below is not a Linux operating system?