so the following is true about layer 4 all solid
- Layer 4 refers to the Transport Layer in the OSI model.
- The Transport Layer is responsible for end-to-end communication between source and destination hosts.
- It ensures reliable and error-free delivery of data.
- It provides services like segmentation, sequencing, flow control, and error detection and correction.
- Layer 4 protocols include TCP (Transmission Control Protocol) and UDP (User Datagram Protocol).
- TCP offers a connection-oriented and reliable data transfer, while UDP is connectionless and provides fast but unreliable delivery.
- Layer 4 protocols use port numbers to identify specific applications or services on a host.
- Layer 4 devices include firewalls and load balancers, which analyze and control network traffic based on Transport Layer information.