Layer 3 （the network layer） provides connectivity and path selection between two host systems that may be located on geographically separated networks. Which two devices operate at the network layer？（）A、 applicationB、 hubC、 switchD、 bridgeE、 router
Layer 3 （the network layer） provides connectivity and path selection between two host systems that may be located on geographically separated networks. Which two devices operate at the network layer？（）
- A、 application
- B、 hub
- C、 switch
- D、 bridge
- E、 router
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