Question

which protocol uses encryption?
https
dhcp
ftp
dns

Explanation:

HTTPS (Hyper - Text Transfer Protocol Secure) uses encryption (SSL/TLS) to secure data transfer between a web server and a client. DHCP (Dynamic Host Configuration Protocol) is for assigning IP addresses and does not encrypt. FTP (File Transfer Protocol) transfers files in plain text. DNS (Domain Name System) resolves domain names to IP addresses and does not use encryption.

Answer:

HTTPS