Hi,
Here are some mcq about ssh. Answers have been randomized (and reorganized to help reading).
Novice from competent.
You want to avoid typing your password when logging into a machine “lab-server” from your machine “laptop-computer”. This can be done using ssh keys by:
A) copying authorized_keys (on laptop-computer) into id_rsa.pub (on lab-server)
B) copying id_rsa.pub (on laptop-computer) into authorized_keys (on lab-server)
C) copying authorized_keys (on laptop-computer) into id_rsa (on lab-server)
D) copying id_rsa (on laptop-computer) into authorized_keys (on lab-server)
Competent from expert.
There is a wiki server running (on port 80) on a machine called “lab-wiki”. This machine is not visible from outside the lab. You are in a conference with your laptop and can only directly access “lab-server”. SSH tunneling can be used to allow you to access the wiki as if it was on your laptop (for example at http://localhost:9999). This can be done with:
RA) ssh -R 9999:lab-wiki:80 lab-server
RB) ssh -R 9999:lab-server:80 lab-wiki
RC) ssh -R 80:lab-wiki:9999 lab-server
RD) ssh -R 80:lab-server:9999 lab-wiki
LA) ssh -L 9999:lab-wiki:80 lab-server
LB) ssh -L 9999:lab-server:80 lab-wiki
LC) ssh -L 80:lab-wiki:9999 lab-server
LD) ssh -L 80:lab-server:9999 lab-wiki