Which companion switch is recommended to be installed with Cisco Smart Business Communications System？（）A、 C2950B、 C3750C、 ESW 500D、 SRW224G4
Which companion switch is recommended to be installed with Cisco Smart Business Communications System？（）
- A、 C2950
- B、 C3750
- C、 ESW 500
- D、 SRW224G4
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