Which three are components of the Cisco SMARTnet service? ()
- A、 NBD callback from specialized engineers during regular business hours
- B、 support for every Cisco product
- C、 support for low-end products only
- D、 cases opened via e-mail or telephone at any time
- E、 advanced replacement on the next business day
- F、 immediate support from the Cisco TAC engineers
正确答案:B,E,F
答案解析:有
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