OSI layer 1 corresponds to the:

OSI layer 1 corresponds to the:

• Application layer
• Physical layer
• Network layer
• Data link layer 

EXPLANATION

The Physical layer is also called as the Layer 1. Here are the basic functionalities of the Physical layer:

• Responsible for electrical signals, light signal, radio signals etc.
• Hardware layer of the OSI layer
• Devices like repeater, hub, cables, ethernet work on this layer
• Protocols like RS232, ATM, FDDI, Ethernet work on this layer