Which transport class should be used with a perfect network layer?
- (A) TPO and TP2
- (B) TP1 and TP3
- (C) TPO, TP1, TP3
- (D) TPO, TP1, TP2, TP3, TP4
Network layer
- The network layer is the third layer of the OSI (Open Systems Interconnection) model, which is a standard for communication between different devices over a network.
- The network layer is responsible for providing logical addressing, routing, and forwarding of data packets between different devices.
- It enables the communication between devices on different networks by providing a logical addressing scheme and routing protocols.
- The network layer also plays a crucial role in ensuring the reliability and efficiency of the network by managing congestion and providing error recovery mechanisms.
- Some examples of protocols that operate at the network layer include IPv4, IPv6, and OSPF.
- The primary protocols used at the network layer include Internet Protocol (IP) and Internetwork Packet Exchange (IPX).
The OSI model defines 5 transport layer classes: TPO, TP1, TP2, TP3, and TP4.
• TPO and TP2 are used with perfect network layers.
• TP1 and TP3 are used with residual-error network layers.
• TP4 is used with unreliable network layers.
TPO: Simple class
TP 1: Basic error recovery class
TP2: Multiplexing class
TP3: Error recovery and Multiplexing class
TP4: Error detection and recovery class
