error control and recovery flow control ppp(point to point protocol transfering from physical layer to network entities
osi modal is deovaped by iso company it has 7 layers but ATM modal has a 4 layers osi modal have a physical layer,datalink layer,network layer, trasport layer, session layer, perastion layer, application layer, but
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
TCP and UDP are transport layer protocols; the OSI layer is layer 4 (transport)
Layer 4 : The Transport Layer
data processing,data storage,data movement and control.
Seven.Seven.Seven.Seven.
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
osi modal is deovaped by iso company it has 7 layers but ATM modal has a 4 layers osi modal have a physical layer,datalink layer,network layer, trasport layer, session layer, perastion layer, application layer, but
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
Routers work in layers two, three, and four layer 1 Physical (copper, fiber,...) layer 2 Datalink (ethernet, token ring, ...) 2->3 providing address resolution (ARP) ie. media access control (MAC) to IP translation layer 3 Network (IP,IPX,RIP,...) 3->4 providing routing layer 4 Transport provides error handling in connectin oriented delivery and handles connectionless delivery Conneciton Oriented(TCP,SPX) Connectionless (UDP)
A firewall generally works at layer 3 and 4 of the OSI model. Layer 3 is the Network Layer where IP works and Layer 4 is the Transport Layer, where TCP and UDP function. Many firewalls today have advanced up the OSI layers and can even understand Layer 7 - the Application Layer.
There are 4 basic functions of an animal. 1. Reproduction 2. Keeping conditions stable 3. Movement 4. Obtaing food and oxygen
transport layer
Layer 4 (Transport) is responsible for correction.
Session Layer - layer 5Transport Layer - layer 4
TCP and UDP are transport layer protocols; the OSI layer is layer 4 (transport)
Layer 4 : The Transport Layer