Allowing only private key-based logins to the remote command line has various advantages: (Choose all that apply)

Question 8 options:

	By using passphrase-protected private keys in conjunction with ssh-agent, the passphrase is exposed less frequently since it is entered less frequently, and logging in is more convenient for the user.
	Attackers cannot use password guessing attacks to remotely break into known accounts on the system.
	With passphrase-protected private keys, an attacker needs both the passphrase and a copy of the private key. With passwords, an attacker just needs the password.
	None of these are correct