单项选择题

Choose the true statement regarding QoS pre-classify.（）

A.QoS pre-classify permits making QoS decisions based on elements from the unencrypted IP packet.
B.QoS pre-classify is required when encrypting voice.
C.QoS pre-classify is an advantage to Service Providers transporting encrypted packets.
D.QoS pre-classify is not designed for IPSec/GRE configurations.

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热门试题

单项选择题WhenshouldyouenableNetworkAddressTranslationTransparency(NAT-T)ontheTeleworker?（）

A.when a router between the Teleworker router and the head-end VPN router is doing NAT/pNAT and does not support IPSec pass-through
B.when the Teleworker router itself is doing NAT/pNAT
C.always
D.never

多项选择题Refer to the exhibit. A customer indicates their teleworkers plan to use IP phones in their home offices. The IT department has surveyed the planned teleworkers, resulting in the user groupings shown in the exhibit. To provide the highest voice quality, the best recommendations to this customer are（）.

A.Deploy all three groups with a QoS service policy, choosing the parameters for Traffic Shaping based on the average uplink speed across the three groups.
B.Teleworkers in Groups A and B should inquire with their DSL providers for subscriptions with higher uplink bandwidths.
C.Teleworkers in Group C should change their subscriptions to DSL for deployment consistency.
D.Teleworkers in Group A should upgrade their subscription to obtain static IP addresses
E.Teleworkers in Group A should inquire with their DSL providers for subscriptions with higher downlink bandwidths.

单项选择题EasyVPNoperatesintwomodes.AlthoughClientModehasadvantages,thereareenvironmentswhereitshouldnotbeused.（）

A.Teleworker devices must be accessed from the central site (server, printers).
B.IP addressing is simplified.
C.The Teleworker LAN is a transit networking for routing.
D.An Enterprise application does not function with Network Address Translation.
E.The Teleworker router is an MPLS PE node.

多项选择题Refer to the exhibit. Given this deployment model and the Enterprise applications, the Teleworker Router provides which functions?（）

A.Broadband access termination
B.IPSec tunnel termination
C.H323 Signaling termination
D.Traffic Shaping
E.Compressed RTP（cRTP）for bandwidth optimization

单项选择题WhatisthebestwaytoensurethatIKE ISAKMPpacketsarenotdroppedwhenQoSisenabledontheuplinkinterfaceoftheTeleworkerrouter?（）

A.QoS and IPSec should never be used together.
B.IKE/ISAKMP packets are DiffSERV codepoint CS6, so the traffic is never dropped.
C.Source IKE/ISAKMP packets off the loop-back address.
D.Classify IKE/ISAKMP packets so they are appropriately prioritized.