单项选择题
Which of these terms refers to call issues that cause variations in timing or time of arrival？（）
A.queuing
B.jitter
C.packet loss
D.digitized sampling
E.signal-to-noise ratio ratio
相关考题
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多项选择题
Refer to the exhibit. Which two of these are correct regarding the recommended practice for distribution layer design？（）
A.use a redundant link to the core
B.use a Layer 2 link between distribution switches
C.never use a redundant link to the core because of convergence issues
D.use a Layer 3 link between distribution switches with route summarization
E.use a Layer 3 link between distribution switches without route summarization -
单项选择题
You are the Cisco Network Designer in Cisco.com. Which of these statements is true of clientless end-user devices?（）
A. They do not receive unique IP addresses.
B. RADIUS or LDAP is required.
C. They are assigned addresses from the internal DHCP pool.
D. Their traffic appears to originate from the originating host network. -
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 than1 percent.
C.Jitter should be less then 40 ms.
D.Managed bandwidth is strongly recommended for voice control traffic.
