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单选题
When troubleshooting the issue， you notice the election of a new root bridge with an unknown MAC address. Knowing that all access ports have the PortFast feature enabled， what would be the easiest way to resolve the issue without losing redundant links？（）
A
Enable bpduguard globally.
B
Enable rootguard.
C
Enable loopguard.
D
Enable spanning tree.
E
Enable UDLD
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更多 “单选题When troubleshooting the issue， you notice the election of a new root bridge with an unknown MAC address. Knowing that all access ports have the PortFast feature enabled， what would be the easiest way to resolve the issue without losing redundant links？（）A Enable bpduguard globally.B Enable rootguard.C Enable loopguard.D Enable spanning tree.E Enable UDLD” 相关考题
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
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 delete a trace options file and later notice that no new entries are being written to this file. What would allow the entries to be written to the file again?（）A、Issue a commit of the current configuration.B、Issue a commit full of the current configuration.C、Issue a commit all of the current configuration.D、Issue a commit confirmed of the current configuration.
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
You’re a network administer and you issue the command （show port 3/1） on an Ethernet port. Toyour surprise you notice a non-zero entry in the ’Giants’ column. What could be the cause of this？（）A、IEEE 802.1QB、IEEE 802.10C、Misconfigured NICD、User configurationE、All of the above
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
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
Which of the following is the LAST step an administrator should take when troubleshooting an issue？（）A、 Identify changes to the system.B、 Replicate the problem in the system.C、 Verify full system functionality. D、 Implement the solution.
考题
Your database is running in the ARCHIVELOG mode. You have configured RMAN for backup and recovery operations. You execute the following command from the RMAN prompt： RMAN CONFIGURE CONTROLFILE AUTOBACKUP ON； After executing this command， in which of the following cases will RMAN make an auto-backup of the control file？ （）A、 when you change the name of a datafileB、 when you drop a table from the databaseC、 when you take an export of the databaseD、 when you back up the database using OS utilitiesE、 when you issue an ALTER SYSTEM SWITCH LOGFILE statementF、 when you issue a BACKUP command from inside the RMAN run block
考题
You are perfoming security testing on an existing asp.net web page.You notice that you are able to issue unauthorised postback requests to the page. You need to prevent unauthorised post back requests. which page directive you use？（）A、%@Page strict = "true" % B、%@Page enableViewStateMac = "true" %C、%@Page EnableEventValidation = "true" %D、%@Page Aspcompact = "true" %
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You need to troubleshoot an issue on the switched LAN. When you issue a command "show port3/1" on a switch， you observe the Giants column has a non-zero entry. What could cause this？（）A
IEEE 802.10B
Misconfigured NICC
User configurationD
IEEE 802.1QE
None of the other alternatives apply
考题
多选题When you are troubleshooting duplex mismatches， which two errors are typically seen on the full- duplexend？（）AruntsBFCS errorsCinterface resetsDlate collisions
考题
单选题You are the network administrator of a small Layer 2 network with 50 users. Lately， users have beencomplaining that the network is very slow. While troubleshooting， you notice that the CAM table of yourswitch is full， although it supports up to 12， 000 MAC addresses. How can you solve this issue and preventit from happening in the future？（）A
Upgrade the switchesB
Configure BPDU guardC
Configure VLAN access listsD
Configure port securityE
Configure Dynamic ARP inspection
考题
单选题Which of the following is the FIRST step a technician should take when troubleshooting a device issue？（）A
Gather information from the customer.B
Isolate the problem on the device.C
Read the service documentation for possible causes.D
Check the parts life counters.
考题
单选题Which of the following is the LAST step an administrator should take when troubleshooting an issue？（）A
Identify changes to the system.B
Replicate the problem in the system.C
Verify full system functionality. D
Implement the solution.
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 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.
考题
单选题You are the network administrator of a small Layer 2 network with 50 users. Lately， users have been complaining that the network is very slow. While troubleshooting， you notice that the CAM table of your switch is full， although it supports up to 12，000 MAC addresses. How can you solve this issue and prevent it from happening in the future？（）A
Upgrade the switchesB
Configure BPDU guardC
Configure VLAN access listsD
Configure port securityE
Configure Dynamic ARP inspection
考题
多选题When you are troubleshooting duplex mismatches， which two errors are typically seen on the fullduplex end？（）AruntsBFCS errorsCinterface resetsDlate collisions
考题
单选题You’re a network administer and you issue the command （show port 3/1） on an Ethernet port. Toyour surprise you notice a non-zero entry in the ’Giants’ column. What could be the cause of this？（）A
IEEE 802.1QB
IEEE 802.10C
Misconfigured NICD
User configurationE
All of the above
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