TCP operates at Layer 4 which is Transport of the OSI Model!
IP addresses are used primarily by layer 3 (network layer) of the OSI model for routine purposes.
Layer 3 of the OSI model. An ICMP header follows the IP header of the IP packet.
Layer 3 i.e, network layer of the OSI model is used to IP addressing.
DHCP runs at the application layer of the OSI model.
TCP/IP because the osi model has seven layer but in tcp/ip only four layers and most important is that the tcp/ip model is reduce the function of osi model.
transport
IP operates at layer 3, this is the NETWORK LAYER in the OSI Model. Network+ Guide to Networks Fifth Edition Ch02, pg56, Figure 2-7
The TCP/IP model was adopted and condensed into 4 Layers.1. Link layer ( Layer 1and 2 of the OSI model)2. Internet Layer (Layer 3 of the OSI model)3. Transport ( Layer 4, 5 and 6 of the OSI model)4. Application ( Layer 7 of the OSI model)http://en.wikipedia.org/wiki/TCP/IP_model#Link_Layer
IPsec operates at the network layer of the OSI model, specifically Layer 3. It provides security for IP packets by offering features like authentication, integrity, and confidentiality. By functioning at this layer, IPsec can protect all traffic traversing an IP network, regardless of the application layer protocols in use.
The Network Interface layer
IP is a layer 3 (network layer) protocol used for routing
The OSI layer that handles IP addresses is the Network layer, which is the third layer of the OSI model. This layer is responsible for routing packets across different networks and managing logical addressing, such as IP addresses, to ensure that data can be sent and received between devices on different networks. Additionally, it facilitates the selection of optimal paths for data transmission.