Which OSI Layers does IBM Cloud Direct Link utilize?

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

Layer 2 (Data Link Layer) and Layer 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.

Reference 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 7 encompasses all OSI layers, which is incorrect.

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

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