單項(xiàng)選擇題What is the purpose of the NBAR protocol discovery?()

A.to build a Packet Description Language Module (PDLM) file to be used in protocol matching
B.to discover applications and build class maps for data classification
C.to look into the TCP or UDP payload and classify packets based on the content
D.to build a database of all application data that passes through the router and queue the data accordingly


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2.多項(xiàng)選擇題Which two Cisco Wireless Control System (WCS) statements are true?()

A.the WCS Base version includes all the features of the WCS Location version as well as additional enhancements
B.the WCS Base version provides on-demand location of rogue access points and clients to within 33 feet (10 meters)
C.WCS adds a graphical view of multiple Cisco Wireless LAN controllers and managed access points
D.WCS includes a network management tool which is similar to a site survey tool
E.WCS uses the CDP protocol to communicate with the controllers

3.單項(xiàng)選擇題What is a drawback to using the IntServ model?()

A.RSVP that signals QoS requests per individual flow
B.not scalable to large implementations
C.admission control not supported
D.use of dynamic port numbers 
E.UDP not supported

4.單項(xiàng)選擇題What is the best description of serialization delay? ()

A.the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interface
B.the time it takes for a propagate from source to destination
C.the time it takes to place a frame on the physical medium for transport
D.the time a packet resides in the outbound queue of a router

5.多項(xiàng)選擇題Which two statements about the best effort model for QoS are true?()

A.delay sensitive packets are given preferential treatment
B.the default policy identifies a delay sensitive class and default class
C.the default policy identifies a delay sensitive class, best effort class, and default class
D.the model is highly scalable
E.the model is still predominant on the internet F the model provides guaranteed service

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