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单选题
You are troubleshooting an issue which is causing full-sized packets entering the MPLS cloud be dropped. You have discovered that one of the switches in the MPLS core is not a Cisco switch, but otherwise the MPLS MTU size is set to 1508 bytes on the routers. Based on this information, which of these may be the reason the packets are being dropped?（）
A
The switch on you MPLS core that was not produced by Cisco does not support oversized packets
B
No switches support oversized packets
C
By definition, the maximum MTU is 1500 bytes
D
As MPLS VPN labeling increases the size of the packet by 8 bytes, the IP MTU should have been changed to 1508
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更多 “单选题You are troubleshooting an issue which is causing full-sized packets entering the MPLS cloud be dropped. You have discovered that one of the switches in the MPLS core is not a Cisco switch, but otherwise the MPLS MTU size is set to 1508 bytes on the routers. Based on this information, which of these may be the reason the packets are being dropped?（）A The switch on you MPLS core that was not produced by Cisco does not support oversized packetsB No switches support oversized packetsC By definition, the maximum MTU is 1500 bytesD As MPLS VPN labeling increases the size of the packet by 8 bytes, the IP MTU should have been changed to 1508” 相关考题
考题
While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?A．The data link layerB．The application layerC．The access layerD．The session layerE．The network layer
考题
An administrator is troubleshooting a communication issue between two computers on the sameLayer 2 switch.Which of the following is the BEST way to determine if the switch is causing the issue?()
A. Setup an ACL that allows and logs all IP traffic between the two computersB. Configure a spanning tree to check for a loopC. Setup a span port on the switch to watch for CRC errorsD. Connect both computers using a crossover cable
考题
While troubleshooting a network outage, you discover that an employee brought a switch from home into the office to connect additional equipment to the network. In order to increase his speed, he connected this switch to both network ports in his office, resulting in a bridge loop.Which of these can you implement to prevent future occurrences of this issue?（）A.RSTPB.root guardC.BPDU guardD.GLBP
考题
While troubleshooting a network connectivity issue, you suspect that a router may be missing a route, or may be receiving bad routing information to a destination. What command should you issue to view the route that the router will use to reach a given destination?（）A. pingB. traceC. show ip routeD. show interfaceE. show cdp neighbors
考题
You are troubleshooting a frame relay connection and wish to view the LMI traffic stats. Which command should you issue?()
A. Show interface lmiB. Show frame-relay lmiC. Show interface frame-relayD. Debug frame-relay interface.
考题
When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?()
A.show ip access-listB.show access-listC.list ip interfaceD.show interfaceE.show ip interface
考题
You are troubleshooting a problem with a cisco 7920 wireless ip phone that is causing the phone to drop calls. the problem appears to be a roaming bandwidth issuE. in order to verify what kind of issue it is， you decide to increase the bandwidth reserved for roaming on the wlan controller to the maximum. What level do you set the bandwidth to？（）A、25 percentB、15 percentC、5 percentD、35 percent
考题
You are troubleshooting an issue which is causing full-sized packets entering the MPLS cloud be dropped. You have discovered that one of the switches in the MPLS core is not a Cisco switch, but otherwise the MPLS MTU size is set to 1508 bytes on the routers. Based on this information, which of these may be the reason the packets are being dropped?（）A、The switch on you MPLS core that was not produced by Cisco does not support oversized packetsB、No switches support oversized packetsC、By definition, the maximum MTU is 1500 bytesD、As MPLS VPN labeling increases the size of the packet by 8 bytes, the IP MTU should have been changed to 1508
考题
Which of the following troubleshooting targets is considered to be a Layer 2 issue？（Choose allthat apply.）（）A、Spanning Tree ProtocolB、CablingC、Frame forwardingD、Packet forwardingE、EtherChannelF、Routing protocols
考题
The network technician is troubleshooting a network issue by implementing a new security device.After installing and configuring the device, which of the following steps should the technician takeNEXT?（）A、Verity full system functionalityB、Identify the main problem and question the userC、Document their findings, actions, and outcomesD、Escalate the issue to upper management
考题
While you are troubleshooting network performance issues， you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization， causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue？（）A、a routing protocol that is flooding updatesB、a flapping port that is generating BPDUs with the TCN bit setC、STP is not running on the switchD、a user that is downloading the output of the show-tech commandE、a corrupted switch CAM table
考题
While troubleshooting a connectivity problem on the network, you issue the ping command from your PC command prompt, but the output shows "request times out."At which OSI layer is this problem associated with?（）A、The data link layerB、The application layerC、The access layerD、The session layerE、The network layer
考题
When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）A、show ip access-listB、show access-listC、list ip interfaceD、show interfaceE、show ip interface
考题
You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phone to drop calls. The problem appears to be a roaming bandwidth issue. In order to verify what kind ofissue it is， you decide to increase the bandwidth reserved for roaming on the WLAN controller to themaximum. What level do you set the bandwidth to？（）A、5 percentB、15 percentC、25 percentD、35 percent
考题
While troubleshooting a network connectivity issue, you suspect that a router may be missing a route, or may be receiving bad routing information to a destination. What command should you issue to view the route that the router will use to reach a given destination?（）A、pingB、traceC、show ip routeD、show interfaceE、show cdp neighbors
考题
A network technician is troubleshooting a network issue that has just been reported. Which of thefollowing troubleshooting steps should the technician take FIRST to help resolve this issue?（）A、Record the solution in the appropriate logs for future use.B、Ask the user who reported the issue what past documentation they have.C、Ask the user who reported the issue to explain the symptoms in detail.D、Record what steps should be taken to resolve the issue.
考题
单选题While troubleshooting a network connectivity issue, you suspect that a router may be missing a route, or may be receiving bad routing information to a destination. What command should you issue to view the route that the router will use to reach a given destination?（）A
pingB
traceC
show ip routeD
show interfaceE
show cdp neighbors
考题
单选题While troubleshooting a network outage, you discover that an employee brought a switch from home into the office to connect additional equipment to the network. In order to increase his speed, he connected this switch to both network ports in his office, resulting in a bridge loop. Which of these can you implement to prevent future occurrences of this issue?（）A
RSTPB
root guardC
BPDU guardD
GLBP
考题
单选题An administrator is troubleshooting a communication issue between two computers on the same Layer 2 switch. Which of the following is the BEST way to determine if the switch is causing the issue?（）A
Setup an ACL that allows and logs all IP traffic between the two computersB
Configure a spanning tree to check for a loopC
Setup a span port on the switch to watch for CRC errorsD
Connect both computers using a crossover cable
考题
多选题Which of the following troubleshooting targets is considered to be a Layer 2 issue？（Choose allthat apply.）（）ASpanning Tree ProtocolBCablingCFrame forwardingDPacket forwardingEEtherChannelFRouting protocols
考题
单选题You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phoneto drop calls. The problem appears to be roaming bandwidth issue. In order to verify what kind ofissue it is， you decide to increase the bandwidth reserve for roaming on the WLAN controller tomaximum. What level do you set the bandwidth to？（）A
5 percentB
15 percentC
25 percentD
35 percent
考题
单选题When you are troubleshooting an ACL issue on a router,which command can help you to verify which interfaces are affected by the ACL?（）A
show ip access-listB
show access-listC
list ip interfaceD
show interfaceE
show ip interface
考题
单选题While you are troubleshooting network performance issues， you notice that a switch is periodically flooding all unicast traffic. Further investigation reveals that periodically the switch is also having spikes in CPU utilization， causing the MAC address table to be flushed and relearned. What is the most likely cause of this issue？（）A
a routing protocol that is flooding updatesB
a flapping port that is generating BPDUs with the TCN bit setC
STP is not running on the switchD
a user that is downloading the output of the show-tech commandE
a corrupted switch CAM table
考题
单选题You are troubleshooting a problem with a cisco 7920 wireless ip phone that is causing the phone to drop calls. the problem appears to be roaming bandwidth issuE. in order to verify what kind of issue it is， you decide to increase the bandwidth reserve for roaming on the wlan controller to maximum. What level do you set the bandwidth to？（）A
5 percentB
15 percentC
25 percentD
35 percent
考题
单选题You are troubleshooting a problem with a Cisco 7920 wireless IP phone that is causing the phoneto drop calls. The problem appears to be a roaming bandwidth issue. In order to verify what kind ofissue it is， you decide to increase the bandwidth reserved for roaming on the WLAN controller tothe maximum. What level do you set the bandwidth to？（）A
25 percentB
15 percentC
5 percentD
35 percent
考题
单选题You are troubleshooting a frame relay connection and wish to view the LMI traffic stats. Which command should you issue?（）A
Show interface lmiB
Show frame-relay lmiC
Show interface frame-relayD
Debug frame-relay interface.
考题
单选题Which of the following is the FIRST step when troubleshooting an issue？（）A
Identify the problem.B
Verify full system functionality.C
Document all findings.D
Establish a theory of probable cause.
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