單項(xiàng)選擇題Jitter is an unwanted variation of one or more characteristics of a periodic signal in electronics and telecommunications and()refers to call issues that cause variations in timing or time of arrival. 

A. echo
B. jitter
C. packet loss
D. digitized sampling


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2.多項(xiàng)選擇題


Which two of these are correct regarding the recommended practice for distribution layer designbased on the following configuration?()

A. use a Layer 2 link between distribution switches
B. use a Layer 3 link between distribution switches
C. use a redundant link to the core
D. use a Layer 3 link between distribution switches with route summarization

4.單項(xiàng)選擇題Which one is not the feature of the Cisco Unified Wireless Network architecture?()

A. network unification
B. remote access
C. mobility services
D. network management

5.多項(xiàng)選擇題What two choices can you make when redundancy is required from a branch office to a regional office? ()

A. multiple Frame Relay PVCs
B. dual Wan links to the regional office
C. dual Wan links to another branch office
D. single links - one to the regional office and one to another branch office

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