Which layer of OSI model would you find ICMP, IP and IPX protocols?

Question

BlackTom AI · Accepted Answer

The question asks which OSI layer contains protocols such as ICMP, IP, and IPX.
Option: Physical. This layer is concerned with the actual transmission of raw bit streams over a physical medium (cables, electrical signals, etc.). ICMP, IP, and IPX operate above this layer, so this choice is incorrect.
Option: Network. This layer is responsible for path determination and logical addressing, and it houses protocols like IP and ICMP. IPX, though historically associated with Novell NetWare, is also a network-layer protocol in many model discussions. Therefore, this is the correct layer for these protocols.
Option: Transport. The transport layer provides end-to-end communication, flow control, and reliability mechanisms (e.g., TCP, UDP). It does not define the routing or addressing of packets, so this does not apply to ICMP, IP, or IPX.
Option: Application. The application layer interfaces directly with user applications and protocols like HTTP, FTP, and SMTP reside here. ICMP and IP are not application-layer protocols, so this option is incorrect.

Which layer of OSI model would you find ICMP, IP and IPX protocols?单项选择题

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