OSI ReferenceModel Layers Descriptions

Question 1

Layer Seven, Application Layer

Answer 1

Provides an interface from the application to the network by supplying a protocol with actions meaningful to the application, for example. “Get web page object.”

Question 2

Layer 6, Presentation Layer

Answer 2

This layer negotiates data formats, such as ASCCII text, or image types like JPEG.

Question 3

Layer 5, Session Layer

Answer 3

This layer provides methods to group multiple bidirectional messages into a workflow for easier management and easier blackout of work that happened if the entire workflow fails.

Question 4

Layer 4 Transport Layer

Answer 4

In function, much like TCP/IP’s transport layer. This layer focuses on data delivery between the two endpoints hosts (for example, error recovery)

Question 5

Layer 3, Network Layer

Answer 5

Like the TCP/IP network (Internet) layer, this layer defines logical addressing, routing, (forwarding), and the routing protocols used to learn routes.

Question 6

Layer 2, Data Link layer

Answer 6

Like the TCP/IP data link , this layer defines the protocols for delivering data over a particular single type of physical network (for example, the Ethernet data link protocols).

Question 7

Layer 1, Physical Layer

Answer 7

This layer defines the physical characteristics of the transmission medium, including connectors, pins, use of pins, electrical currents, encoding, light modulation, and so on.