Final answer:
TFTP is a simple file transfer protocol without authentication, SSH provides secure logins and encrypted communications, HTTPS offers secure web browsing with encryption, and DNS translates domain names to IP addresses.
Step-by-step explanation:
The function of various network protocols is crucial in enabling communications and operations over computer networks.
TFTP (Trivial File Transfer Protocol)
TFTP is a simple, lightweight protocol used for transferring files without the need for authentication. It operates on top of the UDP protocol and is typically used in scenarios where the security is not a concern, such as updating firmware on devices within a local network.
SSH (Secure Shell)
SSH is used for secure remote login and other secure network services over an unsecured network. It provides a secure channel over an insecure network by using encryption to ensure confidentiality and integrity of data.
HTTPS (Hypertext Transfer Protocol Secure)
HTTPS is the secure version of HTTP, used for secure communication over a computer network within a web browser. It incorporates SSL/TLS to encrypt the data exchanged, thus providing security and privacy.
DNS (Domain Name System)
DNS translates easily remembered domain names to the numerical IP addresses needed for the purpose of locating and identifying computer services and devices on the Internet.