On switch R1 you issue the "udld enable" global command.
What does this command accomplish？ （）
A. Enables all fiber-optic LAN ports for Unidirectional LINK Detection （UDLD）
B. Enables all copper media LAN ports Unidirectional Link Detection （UDLD）
C. Overrides the default UDLS setting for all ports
D. Globally enables all ports on the device for Unidirectional Link Detection （UDLS）
E. None of the other alternatives apply
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Switch R1 has been configured with the root guard feature.
What statement is true if the spanning tree enhancement Root Guard is enabled？ （）
A. If BPDUs are not received on a non-designated port， the port is moved into the STP loop- inconsistent blocked state
B. IF BPDUs are received on a PortFast enabled port， the port is disabled.
C. If superior BPDUs are received on a designated port， the interface is placed into the root- inconsistent blocked state.
D. If inferior BPDUs are received on a root port， all blocked ports become alternate paths to the root bride.
You are the network administrator tasked with designing a switching solution for the Company network.
Which of the following statements describing trunk links are INCORRECT？（）
A. The trunk link belongs to a specific VLAN.
B. Multiple trunk links are used to connect multiple end user devices.
C. A trunk link only supports native VLAN.
D. Trunk links use 802.10 to identify a VLAN.
E. The native VLAN of the trunk link is the VLAN that the trunk uses for untagged packets.
ISL is being configured on a Company switch.
Which of the following choices are true regarding the ISL protocol？ （）
A. It can be used between Cisco and non-Cisco switch devices.
B. It calculates a new CRC field on top of the existing CRC field.
C. It adds 4 bytes of protocol-specific information to the original Ethernet frame.
D. It adds 30 bytes of protocol-specific information to the original Ethernet frame.
Which of the following trunking modes are unable to request their ports to convert their links into trunk links？ （）
A. Negotiate
B. Designate
C. No negotiate
D. Auto
E. Manual
F. Off
If you were to set up a VLAN trunk over a Fast Ethernet link on switch R1，
which trunk mode would you set the local port to on R1 if you wanted it to respond to requests from its link partner （R2） and become a trunk？ （）
A. Auto
B. Negotiate
C. Designate
D. No negotiate
最新試題
Refer to the exhibit. Which Virtual Router Redundancy Protocol （VRRP） statement is true about the roles of the master virtual router and the backup virtual router？（）
During routine maintenance， G1/0/1 on DS1 was shutdown. All other interface were up. DS2 became the active HSRP device for Vlan101 as desired. However， after G1/0/1 on DS1 was reactivated. DS1 did not become the active HSRP device as desired. What need to be done to make the group for Vlan101 function properly ？ （）
What is the configured priority value of the Vlan105’s group on DS2 ？（）
What must be the same to make multiple switches part of the same Multiple Spanning Tree （MST）？（）
Which two statements about the various implementations of STP are true？（）
Which statement is correct about RSTP port roles？（）
Refer to the exhibit. The command switchport mode access is issued on interface FastEthernet0/13 on switch CAT1. What will be the result？（）
Which two statements are true about BPDU port-guard and BPDU filtering？（）
Refer to the exhibit. Switch S2 contains the default configuration. Switches S1 and S3 both have had the command spanning-tree mode rapid-pvst issued on them. What will be the result？（）
DS2 has not become the active device for Vlan103’s HSRP group even though all interfaces are active. As related to Vlan103’s HSRP group. What can be done to make the group function properly ？ （）