As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）A. using DHCP snoopingB. snooping the incoming 802.1Q VLAN tagC. using CDPD. snooping the CoS marking on the incoming frames
As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）
A. using DHCP snooping
B. snooping the incoming 802.1Q VLAN tag
C. using CDP
D. snooping the CoS marking on the incoming frames
相关考题：
While troubleshooting an issue in the Ezonexam LAN you notice that a network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?A. This is an Ethernet port operating at half duplexB. This is an Ethernet port operating at full duplexC. This is a port on a network interface card in a PCD. This is 10 MB/s switch portE. This is a 100 MB/s switch portF. None of the above
Which two Cisco AutoQoS configuration statements are true？ （）A、the auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfacesB、CEF must be enabled before configuring the auto discovery qos commandC、the auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data trafficD、the auto qos trust command relies on NBAR to provide VoIP classificationE、the auto qos voip command configures the voip classification on routers and switches
When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network,how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port?（）A、by snooping the CoS marking on the incoming framesB、by using RTP hello messages between the switch port and the Cisco IP PhoneC、by using CDPD、by using DHCP snoopingE、by snooping the incoming 802.1Q VLAN tag
You are configuring a Cisco multilayer switch for the Company network. Which command would you use to configure a port to act as a routed interface？（）A、 ip routingB、 switchport mode trunkC、 no switchportD、 switchport trunk native vlan 1E、 None of the other alternatives apply
A Cisco Catalyst switch is part of the CIS network. As an experienced network administrator, you are thinking of filtering the traffic within VLANI00 with the use of a VACL named "test" on that switch. Which of the following command will enable that?（） A、interface vlan 100 ip access-group test inB、interface vlan 100 ip access-group testC、vlan access-map test 100D、vlan filter test vlan-list 100
The Company network administrator has entered the "auto qos voip cisco-phone" command on switch R1. What does this command do？（）A、It disables the trust boundary feature because the switch knows a Cisco IP phone is attached.B、The switch assigns a CoS value of 5 to incoming packets.C、If a Cisco IP phone is attached and removed， the switch continues to trust the CoS values as long as the switch is not rebooted.D、It turns on STP to see if a Cisco IP phone is attached.E、If a Cisco IP phone is attached， the switch trusts the CoS.F、None of the other alternatives apply.
You examine the port statistics on a Cisco Catalyst switch and notice an excessive number offrames are being dropped. Which of the following are possible reasons for the drops？（）A、Unknown destination MAC addressB、Bad cablingC、MAC forwarding table is fullD、Port configured for half duplexE、Port configured for full duplexF、Network congestion
What method in a Cisco IOS router can confirm that packets marked for a particular QoS marking are being matched?（）A、Issue a show policy-map interface command. B、Assuming Netflow is enabled, issue a show ip cache verbose flow command.C、Issue a show crypto ipsec session command.D、Issue a debug qos set command and a terminal monitor command.
You have configured a Cisco Catalyst switch to perform Layer 3 routing via an SVI and have assigned that interface to VLAN 20. To check the status of the SVI， you issue the show interfaces vlan 20 command at the CLI prompt. You see from the output display that the interface is in an "up/up" state. What must be true in an SVI configuration to bring the VLAN and line protocol up？（）A、The port must be physically connected to another Layer 3 device.B、At least one port in VLAN 20 must be active.C、The Layer 3 routing protocol must be operational and receiving routing updates from neighboring peer devices.D、Because this is a virtual interface， the operational status will always be in an "up/up" state.
While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。A、The port is experiencing errorsB、The port is administratively disabledC、The port is blocked by spanning treeD、The port has an active link with normal traffic activity
You need make configuration changes to an existing layer 3 switch in the Company network. On a multilayer Catalyst switch， which interface command is used to convert a Layer 3 interface to a Layer 2 interface？（）A、 switchport access vlan vlan-idB、 switchportC、 switchport mode accessD、 no switchportE、 None of the other alternatives apply
You have just purchased a new Cisco 3560 switch running the enhanced IOS and need configure it to be installed in a high availability network. On a 3560 EMI switch， which three types of interfaces can be used to configure HSRP？（）A、 SVI interfaceB、 Access portC、 EtherChannel port channelD、 Loopback interfaceE、 Routed portF、 BVI interface
You need to configure a new Cisco router to be installed in the VOIP network. Which threeinterface commands will configure the switch port to support a connected Cisco phone and to trustthe CoS values received on the port if CDP discovers that a Cisco phone is attached？（）A、switchport voice vlan vlan-idB、mls qos trust device cisco-phoneC、switchport priority extend cos_valueD、mls qos trust cosE、mls qos trust override cos
As a network administrator, you issue the interface auto qos voip cisco-phone command on a port in an edge network. It is possible for a Cisco Catalyst switch to check if a Cisco IP Phone is directly attached to that port by:（）A、using DHCP snoopingB、snooping the incoming 802.1Q VLAN tagC、using CDPD、snooping the CoS marking on the incoming frames
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
You need to configure a new Cisco router to be installed in the Company VOIP network. Which three interface commands will configure the switch port to support a connected Cisco phone and to trust the CoS values received on the port if CDP discovers that a Cisco phone is attached？ （）A、switchport voice vlan vlan-idB、mls qos trust device cisco-phoneC、switchport priority extend cos_valueD、mls qos trust cosE、mls qos trust override cos
多选题Which two Cisco AutoQoS configuration statements are true？ （）Athe auto discovery qos command is supported on serial interfaces， subinterfaces， and virtual interfacesBCEF must be enabled before configuring the auto discovery qos commandCthe auto discovery qos privilege EXEC command must be configured on a router for several days to collect a sampling of data trafficDthe auto qos trust command relies on NBAR to provide VoIP classificationEthe auto qos voip command configures the voip classification on routers and switches
单选题You have configured a Cisco Catalyst switch to perform Layer 3 routing via an SVI and have assigned that interface to VLAN 20. To check the status of the SVI， you issue the show interfaces vlan 20 command at the CLI prompt. You see from the output display that the interface is in an "up/up" state. What must be true in an SVI configuration to bring the VLAN and line protocol up？（）AThe port must be physically connected to another Layer 3 device.BAt least one port in VLAN 20 must be active.CThe Layer 3 routing protocol must be operational and receiving routing updates from neighboring peer devices.DBecause this is a virtual interface， the operational status will always be in an up/up state.
单选题When configuring a routed port on a Cisco multilayer switch， which of these is a required configuration task that you must perform to enable that port to function as a routed port？ （）AEnable the switch to participate in routing updates from external devices with the router command in global configuration mode.BEnter the no switchport command to disable Layer 2 functionality at the interface level.CEach port participating in routing of Layer 3 packets must have an IP routing protocol assigned on aperinterface level.DRouting is enabled by default on a multilayer switch， so the port can become a Layer 3 routing interface by assigning the appropriate IP address and subnet information.
单选题A Cisco Catalyst switch is part of the CIS network. As an experienced network administrator, you are thinking of filtering the traffic within VLANI00 with the use of a VACL named "test" on that switch. Which of the following command will enable that?（）Ainterface vlan 100 ip access-group test inBinterface vlan 100 ip access-group testCvlan access-map test 100Dvlan filter test vlan-list 100
多选题The Cisco AutoQoS feature is being used throughout the Company VOIP network. Which three statements about this feature are true？（）AThe mls qos global configuration command must be entered before configuring AutoQoS.BCEF must be enabled.CThe no auto qos voip command is used to disable Cisco AutoQos and revoke all configurations generated by Cisco AutoQos.DCDP must be enabled.ESNMP must be enabled.
单选题When you enter the interface command auto qos voip cisco-phone on a port at the edge of a network, how does the Cisco Catalyst switch detect if a Cisco IP Phone is connected to the port? （）Aby snooping the CoS marking on the incoming framesBby using RTP hello messages between the switch port and the Cisco IP PhoneCby using CDPDby using DHCP snoopingEby snooping the incoming 802.1Q VLAN tag
多选题You need to configure a new Cisco router to be installed in the Company VOIP network. Which three interface commands will configure the switch port to support a connected Cisco phone and to trust the CoS values received on the port if CDP discovers that a Cisco phone is attached？ （）Aswitchport voice vlan vlan-idBmls qos trust device cisco-phoneCswitchport priority extend cos_valueDmls qos trust cosEmls qos trust override cos
单选题You are configuring a Cisco multilayer switch for the Company network. Which command would you use to configure a port to act as a routed interface？（）A ip routingB switchport mode trunkC no switchportD switchport trunk native vlan 1E None of the other alternatives apply
多选题You have just purchased a new Cisco 3560 switch running the enhanced IOS and need configure it to be installed in a high availability network. On a 3560 EMI switch， which three types of interfaces can be used to configure HSRP？（）ASVI interfaceBAccess portCEtherChannel port channelDLoopback interfaceERouted portFBVI interface
单选题While troubleshooting a connectivity problem, a network administrator notices that a port status LED on a Cisco Catalyst series switch is alternating green and amber. Which condition could this indicate（）。AThe port is experiencing errorsBThe port is administratively disabledCThe port is blocked by spanning treeDThe port has an active link with normal traffic activity
单选题What accurately describes the usage of a Cisco AutoQoS command？（）Aon Catalyst switches， the show auto discovery qos command is used to display the data collected during the Auto-Discovery phaseBon Catalyst switches， the show auto qos command is used to display packet statistics of all classes that are configured for all service policiesCon Cisco routers， the show mls qos maps command is used to verify the CoS-to-DSCP maps for egress packet queuingDon Cisco routers， the show auto qos command is used to display the AutoQoS interface templates， policy maps， class maps， and ACLs