Application Layer
Layer 7: The Application Layer
Layer 3,4 and 7
That would be layer 7 - the application layer.
7 - application
It works on the "application layer", because the data is handled at that layer. However, the information it transfers (distribution of IPs) transcends "layers". BTW, It uses UDP (not TCP), at the "transport layer" on ports 67 and 68. Edit - "Application" is 7 on the OSI model I believe, but often referred to as a different number with different models
Layer 7: The Application Layer
PGP works at the Layer 6 - Presentation level.
Layer 3,4 and 7
There are 7 layers in the OSI model which are from top to bottom: application layer / presentation layer / session layer / transportation layer / network layer / data link layer / physical layer
That would be layer 7 - the application layer.
7 - application
It works on the "application layer", because the data is handled at that layer. However, the information it transfers (distribution of IPs) transcends "layers". BTW, It uses UDP (not TCP), at the "transport layer" on ports 67 and 68. Edit - "Application" is 7 on the OSI model I believe, but often referred to as a different number with different models
ftp i.e file transfer protocol,used to transfer a file from node to node FTP works at OSI layer 7, the Application layer
FTP (File Transfer Protocol) is an application layer, or Layer 7, protocol.
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
osi stands for open system interneconnections and it is based on international standard organisation. There are seven layers in osi model 7)Application Layer 6)Presentation Layer 5)Session Layer 4)Transport Layer 3)Network Layer 2)Datalink Layer 1)Physical Layer
ICMP belongs to layer 3 - the network layer (of the 7 OSI layers)