RHCSA RHCSA SSH and Remote Access Configuration 3

Question 1

Which command shows active SSH connections to the local system?

Accepted Answer

ss -tnp | grep :22

Answer

netstat -ssh

Answer

sshd --list

Answer

who -s

Question 2

What is the purpose of the `~/.ssh/known_hosts` file?

Accepted Answer

Stores fingerprints of previously connected SSH servers

Answer

Lists users allowed to connect to this host

Answer

Stores the user's private key

Answer

Contains SSH server access logs

Question 3

Which `sshd_config` directive sets the maximum number of concurrent unauthenticated SSH connections?

Accepted Answer

MaxStartups

Answer

MaxConnections

Answer

MaxSessions

Answer

LoginLimit

Question 4

How do you use SCP to copy a local file to a remote host's `/tmp` directory?

Accepted Answer

scp localfile user@host:/tmp/

Answer

scp user@host:/tmp/ localfile

Answer

ssh user@host cp localfile /tmp/

Answer

rsync localfile user@host:/tmp/

Question 5

Which SSH client config file allows you to define aliases and per-host settings for SSH connections?

Accepted Answer

~/.ssh/config

Answer

~/.ssh/ssh_config

Answer

/etc/ssh/client.conf

Answer

~/.ssh/hosts

Question 6

What `firewall-cmd` command permanently allows SSH traffic through the firewall?

Accepted Answer

firewall-cmd --permanent --add-service=ssh && firewall-cmd --reload

Answer

firewall-cmd --add-port=22/tcp

Answer

iptables -A INPUT -p tcp --dport 22 -j ACCEPT

Answer

firewall-cmd --zone=public --open-service ssh