A.a Frame Relay header includes a 1-bit discard eligible （DE） bit to provide the class of service （CoS）
B.an ATM header includes a 1-bit DE field to provide the CoS
C.an MPLS EXP field is inserted in the Layer 3 IP precedence field to identify the CoS
D.the CoS field only exists inside Ethernet frames when 802.1Q or Inter-Switch Link （ISL） trunking is used
E.in the IEEE 802.1p standard， three bits are used to identify the user priority bits for the CoS
F.in the IEEE 802.1q standard， six bits are used to identify the user priority bits for the CoS

A.G711
B.G726
C.G728
D.G729
E.G729A

A.TCP header compression on router R1
B.TCP header compression on router R2
C.RTP header compression on router R1
D.RTP header compression on router R2
E.payload header compression on router R1
F.payload header compression on router R2

A.in class class-default, replace fair-queue with bandwidth remaining percent 50 
B.in class autoqos-transactional-Fa0/1, replace bandwidth remaining percent 40 with bandwidth remaining percent 20 
C.in class autoqos-transactional-Fa0/1, replace bandwidth remaining percent 40 with bandwidth remaining percent 30 
D.in class autoqos-Bulkl-Fa0/1, replace bandwidth remaining percent 19 with bandwidth remaining percent 25 
E.in class autoqos-Scavenger-Fa0/1, replace bandwidth remaining percent 1 with bandwidth remaining percent 10 
F.in class autoqos-Signaling-Fa0/1, replace bandwidth remaining percent 4 with bandwidth remaining percent 1 

A.the routing protocols being utilized in the network
B.the applications utilizing the network
C.the traffic destinations
D.network addressing scheme
E.cost of implementation
F.the amount of the control needed of the resources

A.on each router， under the dial-peer voice 1 pots configuration， add the port fa0/0 command
B.on each router， under the dial-peer voice 1 pots configuration， add the port 1/0/0 command
C.on each router， configure dial-peer voice 1 as a voip connection and configure dial-peer voice 2 as a pots connection
D.under the dial-peer voice 1 pots configuration， change the destination pattern of 1111 to 2222 on the R1 router， and 2222 to 1111 on the R2 router
E.under the dial-peer voice 2 voip configuration， change the destination pattern of 1111 to 2222 on the R1 router， and 2222 to 1111 on the R2 router
F.under the dial-peer voice 2 voip configuration， change the destination target address of 10.2.2.2 to 10.1.1.1 on the R1 router， and the destination target address of  10.1.1.1 to 10.2.2.2 on the R2 router

A.voice compression methodology
B.LLQ
C.CRTP
D.routing protocol
E.LFI
F.trust boundary

A.the voice packet will be transmitted first， followed by the FTP packet in its entirety
B.the voice packet will be transmitted first， followed by the fragmented FTP packet
C.the FTP packet will be fragmented and the voice packet will be interleaved
D.the FTP packet will be transmitted first in its entirety， follow by the voice packet

A.on Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phase
B.on Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policies
C.on Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuing
D.on Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs

A.Cisco IOS gateways provide services such as address translation and network access control for the devices on the networl
B.Cisco IOS gateways provide services such as bandwidth management and accounting
C.Cisco IOS gateways provide media termination and signal translation between the public switched telephone network （PSTN） and IP networks
D.Cisco IOS gateways provide zone management for all registered endpoints in the network

A.FIFO queuing is only appropriate for slower serial interfaces
B.weighted fair queuing is the default queuing mechanism used for all but slower than E1 rate interfaces
C.only one queuing mechanism type can be applied to an interface
D.weighted fair queuing does not require the configuration of access lists to classify traffic  
E.flow-based weighted fair queuing provides for queues to be serviced in a round-robin fashion