多项选择题

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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热门试题

单项选择题Foracceptablevoicecalls，thepacketerrorrateshouldbelessthan（）%

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

多项选择题Whatarethreeprimaryactivitiesinthecycleofbuildinganenterprisesecuritystrategy？（）

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

多项选择题Whichtwoofthesearerecommendedpracticeswithtrunks？（）

A. use ISL encapsulation
B. use 802.1q encapsulation
C. set ISL to desirable and auto with encapsulation negotiate to support ILS protocol negotiation
D. use VTP server mode to support dynamic propagation of VLAN information across the network
E. set DTP to desirable and desirable with encapsulation negotiate to support DTP protocol negotiation.

单项选择题Whenisthesite-to-siteremoteaccessmodelappropriate？（）

A. for multiple ISDN connections
B. for modem concentrated dial-up connections
C. for a group of users in the same vicinity sharing a connection
D. for use by mobile users

单项选择题Whichroutingprotocolsupportsaflexibleareastructureusingroutinglevelsoneandtwo？（）

A. OSPF
B. EIGRP
C. IS-IS
D. BGP