An ASA$5506$ firewall is often setup so that a connection request from the Internet is not allowed to be initiated into the server in the demilitarized zone $($DMZ$).$ This is because Internet is often connected to Outside interface which is assigned a security level $0$ and the DMZ server is connected to the interface that is assigned a security$-$level $50.$ So if a DMZ web server is to be made accessible from the Internet:

Question $38$ options:

explicit access control $($ACL$)$ entry must be created to override the default firewall behavior. For security reasons, the ACL entry must be defined as narrowly as possible.

RSA keys must be defined and the key size should not be less than $2048$

routing to the external host is to be set within the firewall

outside interface must be assigned a security level $100$