If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（）A、IPSec VPNB、QoS mechanismC、FirewallD、NATE、EIGRP routing protocolF、Static routing
If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（）
- A、IPSec VPN
- B、QoS mechanism
- C、Firewall
- D、NAT
- E、EIGRP routing protocol
- F、Static routing
相关考题：
Refertotheexhibit.TheLCFSoftballLeagueisestablishingvoice-mailgroupstomoreefficientlysendmessagesforraindelaysandotherimportantmatters.IftheorganizationcheckstheIntegratedMessagingbox,membersofthisgroupwillbeallowedwhatIMAP-enabledprivilege?（）A.e-mailandvoice-mailmessageintegrationB.voice-mailandinstantmessageintegrationC.email，voice-mailandinstantmessageintegrationD.voice-mailmessagesmaybesentbyemailE.voice-mailmessagesmaybereceivedbyemail
Which three statements are true about the data traffic characteristics of voice traffic？ （）A、latency must be kept below 150 msB、latency is not a concern as long as jitter is kept below 30 msC、voice packets do not require a specific type of queuingD、voice packets are rather smallE、voice packets require TCP for rapid retransmission of dropped packetsF、voice packets require a fairly constant bandwidth reserved for voice control traffic as well as forthe voice payload
Which two statements about voice VLANs are correct？（）A、Voice VLANs eliminate the need for QoS configurationB、Voice VLANs are used on trunk links to eliminate the need for QoS CoS markingsC、Voice VLANs are mainly used to reduce the number of access switch ports that are used in the networkD、Voice VLANs can be configured to forward existing CoS priorities or override themE、Voice VLANs are mainly used between access layer switches and distribution layer switchesF、Voice VLANs can be configured on Layer 2 ports only
Which two statements are true about voice packets in a LAN？ （Choose two.） （）A、 Voice traffic data flow involves large volumes of large packets.B、 Because a packet loss involves a small amount of data， voice traffic is less affected by packet losses than traditional data traffic is.C、 Voice carrier stream utilizes Real-Time Transport Protocol （RTP） to carry the audio/media portion of VoIP communication.D、 Voice packets are very sensitive to delay and jitter.E、 Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.
Which statement is true about the capabilities of a voice gateway router？（）A、voice gateways with analog interfaces need a gatekeeper to convert analog signals into digital format before voice is encapsulated into IP packetsB、voice gateways need a gatekeeper to interconnect the VoIP networks the PSTN networkC、voice gateways with Cisco Unified CallManager Express （CME） can permanently act as a call agent for IP phonesD、voice gateways equipped with a DSP module can take the role of the call agent during WAN failure.
Which statement is true about the comparison of voice traffic with video traffic？（）A、 Video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.B、 Latency requirements are less stringent for video traffic than for voice traffic.C、 Video traffic is less sensitive to dropped packets than for voice traffic.D、 Video traffic requires the retransmission capabilities of TCP whereas voice uses UDP.E、 Voice traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.F、 Voice traffic requires the retransmission capabilities of TCP whereas video uses UDP.
What does the interface subcommand switchport voice vlan 222 indicate？（）A、The port is configured for both data and voice traffic.B、The port is fully dedicated to forwarding voice traffic.C、The port will operate as an FXS telephony port.D、Voice traffic will be redirected to VLAN 222.
You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）A、 When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.B、 Enabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.C、 When voice VLANs are configured on a trunk link， UplinkFast must also be enabled.D、 Voice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.E、 Enabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
Which two statements are true about voice VLANs？（）A、Voice VLANs are only used when connecting an IP phone and a host to distinct switch portsB、Access ports that are configured with voice VLANs will always trust the CoS that is received from IP phonesC、Access ports that are configured with voice VLANs may or may not override the CoS value that is received from an IP phoneD、Voice VLANs are configured using the switchport voice vlan vlan-ID interface configuration commandE、Voice VLANs provide a trunking interface between an IP phone and an access port on a switch to allow traffic from multiple devices that are connected to the portF、Enabling Voice VLAN on a switch port will automatically configure the port to trust the incoming CoS markings
Which two are functions of an IP voice gateway?（）A、provide far-end call control B、provide far-end camera control C、translate analog voice to packetized voice D、transition call path between different networks E、provide locations-based call admission control
Which two statements are true about the configuration of voice VLANs？（）A、Static secure MAC addresses can be configured in conjunction with voice VLANs.B、PortFast is automatically enabled when voice VLANs are configured.C、PortFast must be manually configured when voice VLANs are configured.D、Voice VLANs are typically configured on uplink ports.E、Voice VLANs are typically configured on access ports.
Which three features of the IMAP are available on a Cisco Unity Express module?（）A、Download e-mail messages as attachments to voice-mail messages. B、Access voice-mail messages from general delivery mailboxes (GDM)s. C、Access voice-mail messages over the network or download them selectively. D、Delete voice-mail messages or mark them as read or unread in a manner similar to e-mail messages. E、View instant messages and voice-mail messages from a single integrated e-mail type client using IMAP. F、Play voice-mail locally using standard media players without requiring a connection to Cisco Unity Express.
Which statement is true about voice VLANs？ （）A、When the voice VLAN feature is enabled， all untagged voice and data traffic is sent through the voice VLAN.B、The voice VLAN feature is enabled by default.C、The IP phone overrides the priority of all incoming data traffic （tagged and untagged） and sets the CoS value to 0.D、The default CoS value is 1 for incoming voice and data traffic.
Which two statements are true about network voice traffic？ （Choose two.）（）A、 Voice traffic is affected more by link speed than FTP traffic is.B、 Voice traffic is affected more by packet delays than FTP traffic is.C、 Voice streams involve larger packet sizes than most TCP network traffic involves.D、 Voice traffic is more sensitive to packet loss than TCP network traffic is.E、 Voice traffic requires QOS mechanisms only in heavily loaded network segments.
When QoS levels in the Cisco Wireless Control System （WCS） are entered， which profile names are used to identify the access categories？（）A、 platinum， gold， silver， and bronzeB、 voice， gold， silver， and bronzeC、 low delay， network critical， business， best effortD、 voice， video， background gold， background silver， and best effortE、 voice， video， best effort， and backgroundF、 voice， video， best effort， background， and scavenger
Which two statements correctly identify factors to consider when Configuring WAN QoS？（）A、Voice Traffic uses Assured ForwardingB、Voice Signaling traffic uses Assured ForwardingC、Voice Signaling traffic uses priority queuingD、Voice Traffic uses priority queuingE、Voice signaling traffic should use priority queuing with Assured Forwarding
Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality of voice calls？（）A、Increase the queue size of the voice class.B、Guarantee bandwidth during congestion to the voice class with a bandwidth command.C、Increase the tx-ring of the egress interface.D、Implement LLQ for the voice class.E、Decrease the rx-ring of the egress interface.F、Decrease the queue size of the voice class.
Which two statements are true about the function of CAC？（）A、CAC provides guaranteed voice quality on a link.B、CAC artificially limits the number of concurrent voice calls.C、CAC is used to control the amount of bandwidth that is taken by a call on a link.D、CAC prevents oversubscription of WAN resources that is caused by too much voice traffic.E、CAC allows an unlimited number of voice calls while severely restricting，if necessary，other forms of traffic.F、CAC solves voice congestion problems by using QoS to give priority to UDP traffic.
多选题Which two statements are true about the function of CAC？（）ACAC provides guaranteed voice quality on a link.BCAC artificially limits the number of concurrent voice calls.CCAC is used to control the amount of bandwidth that is taken by a call on a link.DCAC prevents oversubscription of WAN resources that is caused by too much voice traffic.ECAC allows an unlimited number of voice calls while severely restricting，if necessary，other forms of traffic.FCAC solves voice congestion problems by using QoS to give priority to UDP traffic.
多选题You have configured voice VLANs on Catalyst switch R1. Which two statements are true about the operation of voice VLANs on this device？ （）AWhen the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.BEnabling voice VLANs enables the switch to create multiple queues for traffic that is entering a port.CWhen voice VLANs are configured on a trunk link， UplinkFast must also be enabled.DVoice VLANs are configured to enable the switch to forward frames marked with the proper CoS values over separate physical links.EEnabling voice VLANs enables the switch to forward frames with a specific 802.1P marking.
单选题Refer to the exhibit. Which statement is true about a voice VLAN？（）A Physically the voice network and the data network are separate.B The voice traffic will normally be on a different IP subnet than will the data traffic.C End user intervention is necessary to place the phone into the proper VLAN.D The same security policy should be implemented for both voice and data traffic.E The data VLAN must be configured as the native VLAN.
多选题Which two statements are true about the configuration of voice VLANs？（）AStatic secure MAC addresses can be configured in conjunction with voice VLANs.BPortFast is automatically enabled when voice VLANs are configured.CPortFast must be manually configured when voice VLANs are configured.DVoice VLANs are typically configured on uplink ports.EVoice VLANs are typically configured on access ports.
多选题Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality of voice calls？（）AIncrease the queue size of the voice class.BGuarantee bandwidth during congestion to the voice class with a bandwidth command.CIncrease the tx-ring of the egress interface.DImplement LLQ for the voice class.EDecrease the rx-ring of the egress interface.FDecrease the queue size of the voice class.
单选题Which statement is true about the comparison of voice traffic with video traffic？（）A Video conferencing traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.B Latency requirements are less stringent for video traffic than for voice traffic.C Video traffic is less sensitive to dropped packets than for voice traffic.D Video traffic requires the retransmission capabilities of TCP whereas voice uses UDP.E Voice traffic tends to be much more bursty in nature and is more prone to have an impact on other traffic flows.F Voice traffic requires the retransmission capabilities of TCP whereas video uses UDP.