A.RTP multiplexing is used to keep multiple phone conversations separate
B.RTP provides end-to-end delivery services for voice traffic.
C.UDP is used to ensure a reliable transmission from sender to receiver.
D.RTP is used to provide resource reservation for the voice stream.
E.UDP provides multiplexing of multiple phone conversations.
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A.link efficiency
B.admission control
C.classification and marking
D.shaping and policing
E.congestion avoidance using the RTP protocol
F.resource reservation using the RSVP protocol
A.802.1X
B.Cisco Temporal Key Integrity Protocol （CKIP）
C.Extensible Authentication Protocol-Flexible Authentication via Secure Tunneling （EAP-FAST）
D.Cisco Message Integrity Check （CMIC）
E.One-Time Passwords （OTP）
F.Advanced Encryption Standard （AES）
Refer to the exhibit. The network has been configured with H.323 gateways and gatekeepers as shown. Which statement is true when a call is placed？（）
A.A gatekeeper is contacted to determine the correct local gateway to use.
B.A gateway will receive the call and forward a call request to the local gatekeeper.
C.A gateway will receive the call and forward a call request to the gatekeeper on the other side of the WAN
D.A gatekeeper will receive the call and forward a call request to the remote gateway.
A.programming interface to external applications
B.FXS and FXO port negotiation
C.AutoQos VoIP trust boundaries
D.signaling and device control
E.LLO for voice and video traffic
F.directory and XML services
A.WRED can selectively discard lower priority traffic when the interface becomes congested and can provide differentiated performance characteristics for different classes of service.
B.Resource Reservation Protocol （RSVP） and WRED cannot be configured on the same interface.
C.WRED will throttle back voice traffic only as a last resort.
D.If the average queue length is greater than the minimum threshold but less than the maximum threshold， then based on the drop probability， WRED will either queue the packet or perform a random drop.
E.WRED statistically drops more packets from low-bandwidth users than high-bandwidth users. Therefore， traffic sources that generate the least traffic are more likely to be slowed down than traffic sources that generate the most traffic.
F. WRED treats non-IP traffic as precedence 4.
最新試題
Which three practices are important to the implementation of a DiffServ QoS architecture？（）
What is the term that is used to describe the process of converting a signal from digital to analog？（）
When Cisco SDM is used to generate QoS policy， various QoS classes will be created and assigned a percentage of the interface bandwidth. Which three statements indicate the default bandwidth values that are assigned by SDM for outgoing traffic on a WAN interface？ （）
Which set of classes correctly identifies the four traffic classes， from highest priority to lowest priority， specified in the 802.11e standard？（）
What are three Cisco Unified CallManager features？ （）
Which three functions are associated with a Cisco Unified CallManager？ （）
Which Control Plane Policing （CoPP） statement is true？（）
In the design of a QoS solution， which two factors should be taken into consideration？（）
When deploying a Cisco Wireless Control System （WCS） with the 2700 series location appliance， to within what range is on-demand location of rogue APs possible？（）
What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）