Which OSI Layers does IBM Cloud Direct Link utilize?

IBM Cloud Direct Link utilizesLayers 2 and 3of the OSI model.

Layer 2 (Data Link Layer)andLayer 3 (Network Layer): IBM Cloud Direct Link provides private connectivity from an on-premises data center to the IBM Cloud through dedicated connections. At Layer 2, it provides direct network paths, while at Layer 3, it handles routing between networks.

Direct Link Functionality: Direct Link offers high-performance, secure connectivity options for hybrid cloud solutions, making it an essential service for enterprises that require a secure and efficient connection to the IBM Cloud.

References from IBM Cloud Professional Architect Materials:

The IBM Cloud Direct Link documentation specifies that it operates at OSI Layers 2 and 3 to provide dedicated connectivity options.

Other options are incorrect:

B. Layers 1 thru 7encompasses all OSI layers, which is incorrect.

C. Layers 3 and 4include the transport layer, which Direct Link does not utilize directly.

D. Layers 1 and 2omits Layer 3, which is crucial for network routing.

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