Question at position 23 Which layer of the OSI model is responsible for logical addressing (IP addresses) and routing?Data Link LayerNetwork LayerTransport LayerPhysical LayerClear my selection单项选择题
A
Data Link Layer
B
Network Layer
C
Transport Layer
D
Physical Layer

Question

Question at position 23 Which layer of the OSI model is responsible for logical addressing (IP addresses) and routing?Data Link LayerNetwork LayerTransport LayerPhysical LayerClear my selection

BlackTom AI · Accepted Answer

In this question, we’re asked to identify which OSI layer handles logical addressing (IP addresses) and routing.
Option A: Data Link Layer. This layer is responsible for node-to-node data transfer and physical addressing (MAC addresses), as well as error detection at the frame level. It does not manage logical IP addressing or routing between networks, so this choice is incorrect.
Option B: Network Layer. This is the layer that provides logical addressing (such as IP addresses) and routing between networks. It determines the best path for data to travel from source to destination across multiple networks, which directly matches the description given in the question. This option is correct.
Option C: Transport Layer. The Transport Layer provides end-to-end communication, reliability, segmentation, and flow control (e.g., TCP/UDP). It does not handle IP addressing or inter-network routing, so this choice is incorrect.
Option D: Physical Layer. The Physical Layer deals with the actual transmission media, signaling, and hardware aspects of sending raw bits over a medium. It has nothing to do with IP addressing or routing, so this choice is incorrect.
Overall, the statement about logical addressing and routing aligns with the responsibilities of the Network Layer, while the other layers cover adjacent but distinct functions in the OSI model.

Question at position 23 Which layer of the OSI model is responsible for logical addressing (IP addresses) and routing?Data Link LayerNetwork LayerTransport LayerPhysical LayerClear my selection单项选择题

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