A.QoS preclassification is only supported on generic routing encapsulation （GRE） and IPsec VPNs
B.QoS preclassification is not required in Layer 2 Tunneling Protocol （L2TP）， Layer2 Forwarding （L2F）， and Point-to-Point Tunneling Protocol （PPTP） VPNs
C.QoS preclassification is supported on IPsec AH VPNs， but not on IPsec ESP VPNs
D.the QoS-for-VPNs feature （QoS preclassification） is designed for VPN transport interfaces
E.with IPsec tunnel mode， the type of service （ToS） byte value is copied automatically from the original IP header to the tunnel header
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A.timing
B.queuing
C.differential
D.serialization
E.packetization
F.propagation
A.latency must be kept below 150 ms
B.latency is not a concern as long as jitter is kept below 30 ms
C.voice packets do not require a specific type of queuing
D.voice packets are rather small
E.voice packets require TCP for rapid retransmission of dropped packets
F.voice packets require a fairly constant bandwidth reserved for voice control traffic as well as forthe voice payload
A.header compression
B.payload compression
C.low latency queuing （LLQ）
D.weighted random early detection （WRED）
E.traffic policing
F.traffic shaping
A.a drawback of implementing RSVP is the requirement to migrate to a supporting routing protocol
B.RSVP uses DSCP to signal QoS requirements to routers
C.RSVP is a routing protocol
D.RSVP is an IP protocol that uses IP protocol ID 46， and TCP/UDP ports 3455
E.RSVP specifically provides a level of service for rate-sensitive and delay-sensitive traffic
F.the flow-based approach of RSVP is ideal for large， scalable implementations such as the public internet
Refer to the exhibit. What variation of the 802.1x Extensible Authentication Protocol （EAP）
uses this authentication process？（）
A.LEAP
B.EAP-FAST
C.PEAP
D.EAP-TLS
最新試題
Which of the items stated is typically the most expensive method of improving QoS across WAN links？（）
What is an advantage of the IntServ QoS model？（）
What are three factors used to determine the amount of bandwidth that is required for a single VoIP call？ （）
What can be used to maintain the voice quality on a link by limiting the number of calls that can be active at any given time？（）
What are two ways to minimize the delay of VoIP packets that are traversing a network？ （）
SDM creates a low latency queuing （LLQ） service policy with its associated classes. What are the two types of low latency queuing available using the SDM QoS wizard？（）
Which two functions can be provided by an Integrated Services Router （ISR） in a VoIP network？（）
Which three practices are important to the implementation of a DiffServ QoS architecture？（）
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）
End-to-end QoS is maintained in the Cisco WLAN deployment model by utilizing what parameter in lieu of 802.1p？（）