Read endpoint syntax without making a connection

-p introduces a port number. user@host combines the account and host
label. A host key identifies the server; a user key helps authenticate
the account. Compare the server fingerprint with a trusted reference
before a later authorized connection. Syntax cannot supply permission.

These names are labels only, not hosts to resolve or connect to.
Worked syntax: ssh -p 2202 trainee@example-label
Activity card: username learner; endpoint assigned-host; port 2222;
host key must match fingerprint supplied by authorized owner separately.
Build a connection note; do not run the fictional endpoint.
Question syntax: ssh -p 2220 learner@lab-host
Which number selects the port? Enter digits only.
Public key may be given to the authorized account operator; private key
must stay private. Host key identifies server; user key authenticates user.
No connection/password/key data is supplied or actual session claimed.