OSI model hierarchy

(single-choice) repeaters, Ethernet switches, routers work at which level of the OSI model: (4 points)

A. Physical layer, link layer, network layer

B. Physical layer, network layer, link layer

C. Physical layer, link layer, Transport layer

D. Link layer, link layer, network layer

Analytical:

Physical layer: Converts data into electronic signals that can be transmitted through physical media equivalent to a porter in the post office

Data Link layer: The way you decide to access network media this layer frames the data and handles flow control. This layer specifies the topology and provides hardware addressing. Equivalent to a loading and unpacking worker in the post office

Network layer: Right-of-use data routing through a large network equivalent to a sorting worker in a post office

Transport Layer: Provides a reliable end-to-end connection equivalent to the courier staff in the company running the Post Office Session layer: Allows the user to use a simple and easy-to-remember name to establish a connection equivalent to a company receiving a letter, letter letters and unpacking the Secretary of the presentation layer: Negotiation Data Interchange Format in the company briefing the boss, assistant to the Boss








var cpro_psid = "u2572954"; var cpro_pswidth = 966; var cpro_psheight = 120;














Application layer: Interface between the user's application and the network boss