REST (Representational State Transfer)

REST (Representational State Transfer): An architectural style for designing networked applications. It uses a stateless, client-server communication model, where each message contains all the information necessary to understand and process the request. REST is often used in web services development due to its simplicity, scalability, and performance. The principles of REST encourage the use of […]

Reverse DNS

Reverse DNS: A process of resolving an IP address back to a domain name. Unlike the standard (forward) DNS lookup which translates a domain name into an IP address, rDNS does the opposite. This can be used as a simple form of verification, as it can be slightly more difficult for a malicious party to […]

Remote Job Entry (RJE)

Remote Job Entry (RJE): Traditionally used in mainframe and batch processing environments, RJE allows users to submit jobs to remote systems for execution. Although less common today due to advancements in computing, the concept lives on in distributed computing and cloud services.

Remote Procedure Call (RPC)

Remote Procedure Call (RPC): A protocol that one program can use to request a service from a program located on another computer on a network. RPC uses the client-server model, where the requesting program is a client, and the service-providing program is the server. It allows inter-process communication and is designed to streamline the development […]

Repeaters

Repeaters: A network device used to regenerate or replicate a signal. Repeaters are used in communication networks to extend the reach of a signal, overcome attenuation, or improve signal quality. They operate at the physical layer of the OSI model, receiving a signal, regenerating it, and then retransmitting it, thereby extending the physical limits or […]

Registered ports

Registered ports: Port numbers ranging from 1024 to 49151 that are reserved for specific well-known services in networking. Examples include HTTP on port 80, HTTPS on port 443, SMTP on port 25, DNS on port 53, and RDP on port 3389.