CiscoWorks IP Telephony Environment Monitor (ITEM) provides what two serviceability capabilities?（）
- A、Tool to collect syslog messages from multiple sources
- B、User Tracking to track IP telephones
- C、Diagnostic trace tools to analyze connectivity
- D、Monitoring of Cisco voice elements
- E、Problem alerts for operations personnel
正确答案:D,E
答案解析:有
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