單項選擇題Which statement is true about the distributed call control in a VoIP network?()

A.the VoIP endpoints have the intelligence to set up and control calls
B.Call setup and control functionality is centralized in one call agent or cluster
C.Call setup and control resides in call agents that are distributed throughout the network
D.Each VoIP device has separate call control, voice packetization, and transport mechanisms


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1.單項選擇題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

3.多項選擇題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

4.單項選擇題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

5.單項選擇題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

6.多項選擇題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

7.多項選擇題Which two statements are true about CAC?()

A.CAC is implemented in the call setup phase to allocate bandwidth resources
B.CAC is implemented in the call maintenance phase to allocate bandwidth resources
C.CAC is utilized during the call teardown phase to ensure that all resources have been released
D.CAC uses the Cisco RSVP (Resource Reservation Protocol) Agent to integrate call-processing capabilities with the underlying network infrastructure
E.CAC is implemented in the call setup phase to determine the destination of the call

8.多項選擇題For defining the QoS policies for each traffic class, which parameters should be identified?()

A.minimum bandwidth guarantee
B.average bandwidth guarantee
C.optimum bandwidth guarantee
D.maximum bandwidth rate
E.IP precedence
F.priority

9.單項選擇題Which statements is true about Foreign Exchange Station (FXS) ports on a router?()

A.the FXS interface allows an analog connection to be directed at the public switched telephone network (PSTN’s) central office
B.the FXS interface connect directly to a standard telephone, fax machine, or sililar device and supplies ring, voltage, and dial tone
C.the FXS interface connect directly to an IP phone and supplies ring, voltage, and dial tone
D.the FXS interface connect directly to ISDN voice channels

10.多項選擇題Which two statements about the wireless control system (WCS) are true?()

A.the Cisco WCS is designed to support 1500 Cisco WLAN controllers and up to 50 APs
B.the Cisco WCS runs on a dedicated network device such as the Cisco 2700 network appliance
C.the Cisco WCS runs on various windows and Linux platforms
D.the Cisco WCS screen displays four main menu sheet tab consisting of Monitor, Configure, Security, and Alam
E.the Cisco WCS uses the SNMP protocol to communicate with the controllers

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