多項選擇題

What are two design guidelines for VoIP networks？（）

A. Delay should be no more than 10 ms.
B. Loss should be no more than 1 percent.
C. Jitter should be less then 40 ms.
D. Managed bandwidth is strongly recommended for voice control traffic.

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單項選擇題

For acceptable voice calls， the packet error rate should be less than（）%

A. 0.01
B. 0.1
C. 1
D. 2.5

多項選擇題

What are three primary activities in the cycle of building an enterprise security strategy？（）

A. activity audit
B. administration
C. policy establishment
D. technology implementation

What are two design guidelines for VoIP networks？（）

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For acceptable voice calls， the packet error rate should be less than（）%

What are three primary activities in the cycle of building an enterprise security strategy？（）

What are two design guidelines for VoIP networks？（）

For acceptable voice calls， the packet error rate should be less than（）%