source and destination IP address
The physical address is added
port numbers
source and destination port number or two applications communicating the data
two applications communicating the data
At the OSI Layer 3, which is the Network layer, encapsulation involves adding a header to the data packet that includes crucial information for routing. This header contains the source and destination IP addresses, which facilitate the proper delivery of packets across different networks. Additionally, it may include other information such as the Time to Live (TTL) and protocol type, aiding in the management of the packet's journey through the network.
Encapsulation is the process of adding header information to the layers' data "payload". As the "payload" is passed from one TCP/IP (or OSI) layer to the next, encapsulating layer information is wrapped around the data. So, for example, if the application layer produces a data payload for transmission, it encapsulates it with application-layers headers, which then gets passed to the presentation layer. The presentation layer does the same and so down the protocol stack before transmission across the physical media. At the destination, the process is reversed by way of de-encapsulation where the headers are stripped-off by each matching layer at the destination. 1. Application, Presentation and Session layers create data. {Encapsulation headers added by layers} 2. Transport layer coverts data into segments for transport across the network. {Encapsulation headers added by layer} 3. Network layer converts segments into packets (or Datagrams). {Encapsulation headers added by layer} 4. Data Link layer converts packets (and datagrams) into Frames and the Data Link header is added. {Encapsulation headers added by layer} 5. Physical - frames are converted into bits for transmission over the physical media.{Encapsulation headers added by layer}
When a user sends an HTTP request to a web server on a remote network, the information needed to perform the action is added to the address field of a frame to indicate the destination during encapsulation.
During the encapsulation process, the destination and source IP addresses are added to the packet header. These addresses help routers and networking devices determine where to route the packet to reach its destination.
the physical address is added
it is used for error detection
The physical address is added
The network Card(NIC) is on Layer 2, but the connector on the NIC is considered Layer 1 because the connector is considered a physical connection. Layer 1 ------Physical Layer 2 ------Data According to Network+ the answer is Physical.