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What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?()
A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.
B. 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.
C. 79xx IP phones do not mark voice packets with optimal DSCP values.
D. 79xx IP phones use a custom protocol to communicate CDP information to the switch.
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更多 “ What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones?() A. 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B. 79xx IP phones do not mark protocol packets such as DHCP, DNS, or TFTP with non-zero DSCP values.C. 79xx IP phones do not mark voice packets with optimal DSCP values.D. 79xx IP phones use a custom protocol to communicate CDP information to the switch. ” 相关考题
考题
Click the Exhibit button.When configuring WXC A‘s local WAN parameters, which QoS network parameter would you choose?()
A. over-subscribedB. under-subscribedC. dedicated circuitsD. nondedicated circuits
考题
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.
考题
What does qos pre-classify provides inregardto implementing QoS over GRE/IPSec VPN tunnels？（）A、 enables IOS to copy the ToS field from the inner （original） IPheader to theouter tunnel IP headerB、 enables IOS to make a copy of the inner （original） IP header and to run a QoS classification before encryption， based on fields in the inner IP header.C、 enables IOS to classify packets based on the ToS field in the inner （original） IP headerD、 enables IOS to classify packets based on the ToS field in the outer tunnel IP headerE、 enables the IOS classification engine to only see a single encrypted and tunneledflow to reduce classification complexity
考题
Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）A、 Analog phones， connected to the PSTN， act as internal call agents if IP communication to the CallManager is lost.B、 An onsite gateway reroutes calls over the PSTN if IP communication to the CallManager is lost.C、 The IP phones can reroute calls over the PSTN if IP communication to the CallManager is lost.D、 Local voice gateways can assume the function of a call agent if IP communication to the CallManager is lost.E、 IP phones use an internal call agent if IP communication to the CallManager is lost.
考题
When configuring a wireless LAN controller for QoS， what 802.1p tag should be applied for video applications？ （）A、3B、1C、4D、6
考题
What does the mac packet-classify command do when applied to an interface configuration？（）A、 It enables MAC ACLs to be applied to only IP packets that enter the interface.B、 It enables MAC ACLs to be applied to only non-IP packets that enter the interface.C、 It enables MAC ACLs to be applied to all packets that enter the interface.D、 It enables MAC ACLs to be used for QoS settings.
考题
When configuring a WLAN controller for a voice application using Cisco 7920 wireless IP phones. Whichtwo general control settings should you select？（）A、Multicast onB、Aggressive Load Balancing offC、Multicast offD、AP Fallback onE、Aggressive Load Balancing on
考题
Cisco AutoQoS takes the interface type and bandwidth into consideration when configuring which three QoS features？（）A、voice compression methodologyB、LLQC、CRTPD、routing protocolE、LFIF、trust boundary
考题
Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature （QoS pre-classify） provides packet classification and applies appropriate QoS service on tunnel interfaces？（）A、IP precedence bitsB、DSCP bitsC、original port numbersD、DE bitsE、source IP addressF、destination IP address
考题
Users report an intermittent degradation of sound on their IP phones. Which of the following woulda network administrator do to alleviate the problem?（）A、Use plenum cablesB、Provide fault tolerance for the switchC、Configure VLAN trunking on the switchD、Configure QoS
考题
When configuring QoS on a wireless controller， the per-user， real-time bandwidth contract isenforced for which of the following protocols？（）A、IPXB、IPC、UDPD、TCP
考题
When configuring a WLAN controller for a voice application using Cisco 7920 wireless IP phones，which two general control settings should you select？（）A、Multicast onB、Aggressive Load Balancing offC、 Multicast offD、AP Fallback onE、Aggressive Load Balancing onF、AP Fallback off
考题
Which two statements about QoS options in a Cisco UCS environment are true？（）A、 The QoS policy assigns a system class to the outgoing traffic for a vNIC or vHBA.B、 Flow-control policies determine whether the uplink Ethernet ports in a Cisco UCS environment send and receive IEEE 802.3x pause frames when the send buffer for a port fills.C、 If no system class is configured as CoS 0， the Fibre Channel system class is used.D、 The user can configure QoS for these system classes： platinum， gold， silver， best effort， Fibre Channel.E、 When configuring a system class， the type of adapter in a server may limit the maximum MTU supported.
考题
Which two statements about the QoS functionality of the Cisco SDM are true？（）A、the first step when using the SDM QoS wizard is to select the inbound interface on which the QoS policy must be appliedB、the SDM QoS wizard can be used to optimize LAN， WAN， and VPN interfacesC、he SDM QoS wizard supports network-based application recognition （NBAR） to provide deep and stateful packet inspectionD、he SDM QoS wizard will apply custom queuing and priority queuing policies to the identified interfacesE、he SDM QoS wizard will apply low latency-queuing，custom-queuing and priority-queuing policies to the identified interfacesF、to create and manage the QoS settings， the user must select the QoS wizard task under the Monitor option
考题
What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A、 79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B、 79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C、 79xx IP phones do not mark voice packets with optimal DSCP values.D、 79xx IP phones use a custom protocol to communicate CDP information to the switch.
考题
What accurately describes the usage of a Cisco AutoQoS command？（）A、on Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phaseB、on Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policiesC、on Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuingD、on Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs
考题
单选题Click the Exhibit button. When configuring WXC A's local WAN parameters, which QoS network parameter would you choose?（）A
over-subscribedB
under-subscribedC
dedicated circuitsD
nondedicated circuits
考题
单选题What is one of the reasons that custom QoS ACLs are recommended over automatic QoS when configuring ports on a Catalyst 6500 for use with IP phones？（）A
79xx IP phones do not automatically mark voice packets with non-zero DSCP values.B
79xx IP phones do not mark protocol packets such as DHCP， DNS， or TFTP with non-zero DSCP values.C
79xx IP phones do not mark voice packets with optimal DSCP values.D
79xx IP phones use a custom protocol to communicate CDP information to the switch.
考题
单选题What formula do you use to calculate the number of Voice Gateway ports? （）A
Erlang A B
Erlang B C
Erlang C D
IVR ports + agent phones
考题
多选题Which two VoIP capabilities are utilized when the CallManager and the gateway are configured for Survivable Remote Site Telephony？（）AAnalog phones， connected to the PSTN， act as internal call agents if IP communication to the CallManager is lost.BAn onsite gateway reroutes calls over the PSTN if IP communication to the CallManager is lost.CThe IP phones can reroute calls over the PSTN if IP communication to the CallManager is lost.DLocal voice gateways can assume the function of a call agent if IP communication to the CallManager is lost.EIP phones use an internal call agent if IP communication to the CallManager is lost.
考题
单选题When configuring a wireless LAN controller for QoS， what 802.1p tag should be applied for video applications？ （）A
3B
1C
4D
6
考题
单选题What does qos pre-classify provides inregardto implementing QoS over GRE/IPSec VPN tunnels？（）A
enables IOS to copy the ToS field from the inner （original） IPheader to theouter tunnel IP headerB
enables IOS to make a copy of the inner （original） IP header and to run a QoS classification before encryption， based on fields in the inner IP header.C
enables IOS to classify packets based on the ToS field in the inner （original） IP headerD
enables IOS to classify packets based on the ToS field in the outer tunnel IP headerE
enables the IOS classification engine to only see a single encrypted and tunneledflow to reduce classification complexity
考题
单选题What accurately describes the usage of a Cisco AutoQoS command？（）A
on Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phaseB
on Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policiesC
on Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuingD
on Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs
考题
多选题Which three characteristics of the traffic flow are taken into consideration when the QoS-for-VPNs feature （QoS pre-classify） provides packet classification and applies appropriate QoS service on tunnel interfaces？（）AIP precedence bitsBDSCP bitsCoriginal port numbersDDE bitsEsource IP addressFdestination IP address
考题
单选题What does the mac packet-classify command do when applied to an interface configuration？（）A
It enables MAC ACLs to be applied to only IP packets that enter the interface.B
It enables MAC ACLs to be applied to only non-IP packets that enter the interface.C
It enables MAC ACLs to be applied to all packets that enter the interface.D
It enables MAC ACLs to be used for QoS settings.
考题
多选题Which two statements correctly identify factors to consider when Configuring WAN QoS？（）AVoice Traffic uses Assured ForwardingBVoice Signaling traffic uses Assured ForwardingCVoice Signaling traffic uses priority queuingDVoice Traffic uses priority queuingEVoice signaling traffic should use priority queuing with Assured Forwarding
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