Test: OSI Model and Transmission Modes - Bank Exams MCQ

To amplify or regenerate an incoming signal before retransmitting it, repeaters are network devices that operate at the physical layer of the OSI model.

Data encryption and decryption take place in the presentation layer as well.

The network layer, or Layer 3, is most frequently referred to as the layer where routing occurs. The primary responsibility of a router is to transfer packets between networks.

Message passing between application processes (clients and servers) operating on various end systems is governed by an application layer protocol. Protocols for application layers are DNS, SMTP, POP, FTP, and HTTP.

The session, presentation, and application layers are user support layers, while physical, data connection, and network layers are network support layers. The data is segmented and re-organized by the transport layer to connect these layers.

The top layer of an OSI model (layer seven) is the application layer that delivers network services or protocols that comply with an end-user's data to the end-user.

Physical. The lowest layer of the OSI model is concerned with data communication in the form of electrical, optic, or electromagnetic signals physically transmitting information between networking devices and infrastructure.

Simplex, half-duplex and full-duplex are the three transmission directions that are defined by the physical layer between two devices. Additionally, connecting gadgets to media is a concern.

Data Link layer of OSI model divides the stream of bits received from the network layer into data frames.