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firewall, router,layer 3 switches and i approve that answer !
NO! In general the firewall is a layer 4 device, it traffics filter incoming and outgoing ports. It uses the function of TCP and UCP. However a Firewall can also be a layer 3 device as in internal firewall in a router. Also a switch is a layer 2 device unless your talking about a Router switch.
What else can I help you with?
PGP work at which layer of osi model?
PGP works at the Layer 6 - Presentation level.
Do connectivity devices such as hubs and repeaters operate at the Presentation layer of the OSI Model?
No. Only protocols that users can see on their screen are considered Presentation Layer based. Hubs and repeaters operate on the physical layer, because it doesn't do anything with the data, it simply forwards it.
Encryption and decryption of data are functions performed by the what layer?
presentation layer
What OSI layer standardizes the data formats between systems?
presentation layer is used
Can any other layer perform the tasks presentation layer of the OSI model?
Not really; that is why you have the separate Presentation Layer, because of its responsibilities.
Which OSI layer provides translations?
Presentation Layer.
Which layer performs data compression?
Layer 6 - Presentation Layer
Which layer of the the osi model handles data translation code formatting and data encryption?
Presentation
Which layer is immediately below the application layer in the OSI model?
It's called Presentation layer.
The application tcp-ip layer maps to which osi layers?
The Application layer The Presentation layer The Session layer
What are functions of presentation layer?
phonology andphnotics
Advantage of Presentation Layer into one single application layer?
simpler adv
