The following was configured on a switch：
Switch（config） # spanning-tree portfast bpdufilter default
What is the effect of this configuration command？（）
A.If BPDUs are received by a port configured for PortFast， they are ignored and none are sent.
B.The command will enable BPDU filtering on all ports regardless of whether they are configured for BPDU filtering at the interface level.
C.If BPDUs are received by a port configured for Portfast， the port will transition to forwarding state.
D.If BPDUs are received by a port configured for PortFast， then PortFast is disabled and the BPDUs are processed normally.
E.None of the other alternatives apply.
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An SVI has been configured on a device.
Which two statements are true about a switched virtual interface （SVI）？（）
A.An SVI is normally created for the default VLAN （VLAN1） to permit remote switch administration.
B.Multiple SVIs can be associated with a VLAN.
C.SVI is another name for a routed port.
D.An SVI is created by entering the no switchport command in interface configuration mode.
E.An SVI provides a default gateway for a VLAN.
The following output was displayed on a switch.
Study the exhibit carefully. The administrator is verifying that a CEF FIB entry exists to destination network 192.168.150.0. Given the output generated by the "show ip cef" and "show adjacency detail" commands，
which three statements are true？ （）
A.The "valid cached adjacency" entry indicates that CEF will put all packets going to such an adjacency to the next best switching mode.
B.The number 003071506800 is the MAC address of the source IP address.
C.There is a valid CEF entry for the destination network 192.168.150.0.
D.The number 003071506800 is the MAC address of the 192.168.199.3 next hop IP address.
E.The counters （0 packets， 0 bytes） indicate a problem with the 192.168.199.3 next hop IP address.
F.There is an adjacency for the 192.168.199.3 next hop IP address.
You work as a network technician at. Your boss， Mrs. ， is interested in the Spanning Tree Protocol timers.
What can you tell her regarding the default STP timers？ （）
A.The hello time is 5 seconds.
B.The forward delay is 10 seconds.
C.The hello time is 2 seconds.
D.The forward delay is 15 seconds
E.The max_age timer is 15 seconds.
F.The hello time is 10 seconds.
G.The max_age timer is 20 seconds.
H.The forward delay is 20 seconds.
I.The max_age timer is 30 seconds.
A switch port on TK1 is being configured to support 802.1Q trunking.
Which of the following are true about 802.1Q trunking？（）
A.Both switches must be in the same VTP domain.
B.The encapsulation type of both ends of the trunk does not have to match.
C.The native VLAN on both ends of the trunk must be VLAN 1.
D.802.1Q trunking can only be configured on a Layer 2 port.
E.In 802.1Q trunking， all VLAN packets are tagged on the trunk link， except the native VLAN.
A.forwarding information base
B.adjacency tables
C.neighbor tables
D.caching tables
E.route tables
A.Address Resolution Protocol （ARP）
B.PDU header rewrite
C.NetFlow switching
D.hello packet exchange
A.Switch（config-if）#spanning-tree guard root
B.Switch（config-if）#spanning-tree portfast
C.Switch（config-if）#switchport mode trunk
D.Switch（config-if）#switchport mode access
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 default
B.Switch（config-if）#spanning-tree bdpufilter
C.Switch（config）#udld aggressive
D.Switch（config-if）#spanning-tree bpduguard
A.spanning-tree guard root
B.spanning-tree portfast bpduguard default
C.spanning-tree bpduguard enable
D.spanning-tree bpdufilter enable
E.spanning-tree portfast bpdufilter default
A.a native VLAN mismatch on either side of an 802.1Q link
B.BPDU filter configured on a link to another switch
C.Spanning Tree Protocol enabled on both Layer 2 and multilayer switches
D.PortFast enabled on all access and trunk ports
最新試題
Which two statements are true when the extended system ID feature is enabled？ （）
Which three statements about STP timers are true？（）
Refer to the exhibit. LACP has been configured on Switch1 as shown. Which is the correct command set to configure LACP on Switch2？（）
During routine maintenance， it became necessary to shutdown G1/0/1 on DS1 and DS2. All other interface were up. During this time， DS1 became the active device for Vlan104’s HSRP group. As related to Vlan104’s HSRP group. What can be done to make the group function properly ？ （）
Refer to the exhibit. On the basis of the output of the show spanning-tree inconsistentports command， which statement about interfaces FastEthernet 0/1 and FastEthernet 0/2 is true？（）
If G1/0/1 on DS1 is shutdown， what will be the current priority value of the Vlan105’s group on DS1 ？（）
Which router redundancy protocol cannot be configured for interface tracking？（）
What is the configured priority value of the Vlan105’s group on DS2 ？（）
Which statement is correct about RSTP port roles？（）
Refer to the exhibit. All network links are FastEthernet. Although there is complete connectivity throughout the network， Front Line users have been complaining that they experience slower network performance when accessing the server farm than the Reception office experiences. Based on the exhibit， which two statements are true？（）