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单选题
What is the result of entering the command spanning-tree loopguard default？（）
A
The command enables both loop guard and root guard.
B
The command changes the status of loop guard from the default of disabled to enabled.
C
The command activates loop guard on point-to-multipoint links in the switched network.
D
The command will disable EtherChannel guard.
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更多 “单选题What is the result of entering the command spanning-tree loopguard default？（）A The command enables both loop guard and root guard.B The command changes the status of loop guard from the default of disabled to enabled.C The command activates loop guard on point-to-multipoint links in the switched network.D The command will disable EtherChannel guard.” 相关考题
考题
When you display the routing table by entering the show route command, what does the* indicate?()
A.The route is a direct route.B.The route was selected as active.C.The route is a default route.D.The route was learned using a dynamic routing protocol.
考题
Which command enhances the 802.1D convergence time on ports that are connected to hosts?()
A. spanning-tree backbonefastB. spanning-tree uplinkfastC. spanning-tree portfastD. spanning-tree cost512
考题
Which command enables RSTP on a switch?()
A. spanning-tree mode rapid-pvstB. spanning-tree uplinkfastC. spanning-tree backbonefastD. spanning-tree mode mst
考题
Which spanning-tree command would cause a PortFast-enabled interface to lose its PortFast-operational status and disable BPDU filtering if it receives BPDUs？（）A、spanning-tree guard rootB、spanning-tree portfast bpduguard defaultC、spanning-tree bpduguard enableD、spanning-tree bpdufilter enableE、spanning-tree portfast bpdufilter default
考题
What is the result of entering the command spanning-tree loopguard default？（）A、The command enables both loop guard and root guard.B、The command changes the status of loop guard from the default of disabled to enabled.C、The command activates loop guard on point-to-multipoint links in the switched network.D、The command will disable EtherChannel guard.
考题
When you display the routing table by entering the show route command, what does the* indicate?（）A、The route is a direct route.B、The route was selected as active.C、The route is a default route.D、The route was learned using a dynamic routing protocol.
考题
What will be disabled as a result of the no service password-recovery command？（）A、password encryption serviceB、changes to the config-register settingC、the xmodem privilege EXEC mode command to recover the Cisco IOS imageD、ROMMON
考题
Which command enables RSTP on a switch?（）A、spanning-tree mode rapid-pvstB、spanning-tree uplinkfastC、spanning-tree backbonefastD、spanning-tree mode mst
考题
What are two results of entering the Switch(config)# vtp mode client command on a Catalyst switch?（）A、The switch will ignore VTP summary advertisementsB、The switch will forward VTP summary advertisementsC、The switch will process VTP summary advertisementsD、The switch will originate VTP summary advertisementsE、The switch will create, modify and delete VLANs for the entire VTP domain
考题
Which command enhances the 802.1D convergence time on ports that are connected to hosts?（）A、spanning-tree backbonefastB、spanning-tree uplinkfastC、spanning-tree portfastD、spanning-tree cost512
考题
In your Automatic Storage Management （ASM） instance， one of the nonempty disk groups， DGROUP1， is no longer required and you want this disk group to be removed. You execute the following command to achieve this objective： DROP DISKGROUP dgroup1 EXCLUDING CONTENTS； What would be the result of this command？（）A、 This command would result in an error because the disk group is not empty.B、 The command would distribute the contents of the specified disk group among all other disk groups and then drop the specified disk group.C、 The command would result in the contents being moved to the parent disk group and dropping of the disk group.D、 The command would result in the disk group being marked as INVALID because it cannot be dropped.E、 The command would drop the disk group， ignoring the EXCLUDING CONTENTS option.
考题
You issued the following statement： SQLALTER DATABASE ENABLE RESUMABLE TIMEOUT n； What will be the result of issuing the above statement？（）A、The command will not execute successfully because TIMEOUT is an invalid clause with the ALTER DATABASE ENABLE RESUMABLE command.B、 The command will not execute successfully because resumable space allocation is enabled at the session level.C、 The command will execute successfully and resumable space will be allocated at the session level.D、 The command will execute successfully and resumable space will be allocated at the instance level.
考题
单选题When you display the routing table by entering the show route command, what does the* indicate?（）A
The route is a direct route.B
The route was selected as active.C
The route is a default route.D
The route was learned using a dynamic routing protocol.
考题
多选题our database is in the MOUNT state and you execute the following command to open it： ALTER DATABASE OPEN What two actions are performed as a result of this command？（）AAll control files are opened.BAll redo log files are openedCThe password file is opened.DThe parameter file is opened.EAll online data files are opened.
考题
单选题You are standing the wheelwatch on entering port and the Master gives you a rudder command which conflicts with a rudder command from the Pilot.What should you do（）.A
obey the MasterB
obey the PilotC
bring the rudder to a position midway between the two conflicting ordersD
ask the Pilot if he relinquishes control
考题
单选题You issued the following statement： SQLALTER DATABASE ENABLE RESUMABLE TIMEOUT n； What will be the result of issuing the above statement？（）A
The command will not execute successfully because TIMEOUT is an invalid clause with the ALTER DATABASE ENABLE RESUMABLE command.B
The command will not execute successfully because resumable space allocation is enabled at the session level.C
The command will execute successfully and resumable space will be allocated at the session level.D
The command will execute successfully and resumable space will be allocated at the instance level.
考题
单选题A port in a redundant topology is currently in the blocking state and is not receiving BPDUs. To ensure that this port does not erroneously transition to the forwarding state， which command should be configured to satisfy the requirement？（）A
Switch（config）#spanning-tree loopguard defaultB
Switch（config-if）#spanning-tree bdpufilterC
Switch（config）#udld aggressiveD
Switch（config-if）#spanning-tree bpduguard
考题
单选题In your Automatic Storage Management （ASM） instance， one of the nonempty disk groups， DGROUP1， is no longer required and you want this disk group to be removed. You execute the following command to achieve this objective： DROP DISKGROUP dgroup1 EXCLUDING CONTENTS； What would be the result of this command？（）A
This command would result in an error because the disk group is not empty.B
The command would distribute the contents of the specified disk group among all other disk groups and then drop the specified disk group.C
The command would result in the contents being moved to the parent disk group and dropping of the disk group.D
The command would result in the disk group being marked as INVALID because it cannot be dropped.E
The command would drop the disk group， ignoring the EXCLUDING CONTENTS option.
考题
单选题What will be disabled as a result of the no service password-recovery command？（）A
password encryption serviceB
changes to the config-register settingC
the xmodem privilege EXEC mode command to recover the Cisco IOS imageD
ROMMON
考题
单选题What is the result of entering the command port-channel load-balance src-dst-ip on an EtherChannel link？ （）A
Packets are distributed across the ports in the channel based on both the source and destination MAC addresses.B
Packets are distributed across the ports in the channel based on both the source and destination IP addresses.C
Packets are balanced across the ports in the channel based first on the source MAC address， then on the destination MAC address， then on the IP address.D
Packets are distributed across the access ports in the channel based first on the source IP address and then the destination IP addresses.
考题
单选题You are standing the wheelwatch on entering port and the master gives you a rudder command which conflicts with a rudder command from the pilot.What should you do?（）A
obey the master‟sB
obey the pilot‟sC
bring the rudder to a position midway between the two conflicting ordersD
ask the pilot if he relinquishes control
考题
单选题You are using an Automatic Storage Management （ASM） instance to manage the database files of your production database. After adding a new disk group to the ASM instance， you execute the following command： ALTER DISKGROUP dg3 REBALANCE POWER 0； What would be the result of this command？（）A
The rebalancing of the disk group would be stopped.B
The rebalancing of the disk group would be completed as fast as possible.C
The command would result in an error because the value of POWER cannot be 0.D
The rebalancing of the disk group would be completed without affecting the disk group DG3.E
The command would result in an error because the disk groups cannot be manually rebalanced.
考题
单选题If you issue the command shutdown abort prior to trying to put the database in ARCHIVELOG mode， what will be the result when you issue the command alter database archivelog？（）A
The alter database archivelog command will failB
The alter database archivelog inconsistent command must be used to put the database in ARCHIVELOG modeC
The alter database archivelog command will succeedD
The alter database archivelog command will ask if you want to make the database consistent firstE
There is no alter database archivelog command. The correct command is alter database alterlogging
考题
多选题You work as a database administrator for Supportcenter.cn. Your database is in the MOUNT state and you execute the following command to open it ALTER DATABASE OPEN； What two actions are performed as a result of this command？（）AAll control files are openedBAll redo files are openedCThe password file is openedDThe parameter file is openedEAll online data files are opened
考题
问答题What is the next state of initial in spanning-tree protocol？
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