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.
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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
You are the network administrator at Company and switch R1 is configured as shown below： Interface gigethernet 0/1 Switchport mode trunk
Switchport trunk encapsulation dot1q Switchport trunk native vlan 5
If untagged frames are arriving on interface gigethernet 0/1 of R1，
which of the following statement are correct？（）
A. Untagged frames are automatically assumed to be in VLAN 5.
B. Untagged frames are defaulted to VLAN 1 traffic.
C. Untagged frames are dropped because all packets are tagged when dot1q trunked.
D. Untagged frames are determined on the other switch
E. Untagged frames are not supported on 802.1Q trunks.
If you were to configure an ISL Ethernet trunk between two Cisco switches， named R1 and R2，
what would you have to include at the end of the link for the trunk to operate correctly？ （）
A. An identical VTP mode.
B. An identical speed/duplex.
C. An identical trunk negotiation parameter.
D. An identical trunk encapsulation parameter.
Which of the following technologies would an Internet Service Provider use to support overlapping customer VLAN ID’s over transparent LAN services？ （）
A. 802.1q tunneling
B. ATM
C. SDH
D. IP Over Optical Networking
E. ISL
You need to connect two Company core switches via an ISL trunk.
Which statement is true regarding the configuration of ISL trunks？ （）
A. A Catalyst switch cannot have ISL and IEEE 802.1q trunks enabled.
B. All Catalyst switches support ISL trunking.
C. A Catalyst switch will report giants if one side is configured for ISL while the other side is not.
D. ISL trunking requires that native VLANs match.
E. None of the other alternatives apply
A new Company switch was just configured using the "switchport trunk native vlan 7" command.
What does this interface command accomplish？（）
A. Causes the interface to apply ISL framing for traffic on VLAN 7
B. Configures the trunking interface to forward traffic from VLAN 7
C. Configures the interface to be a trunking port and causes traffic on VLAN 7 to be 802.1q tagged
D. Configures the trunking interface to send traffic from VLAN 7 untagged
E. None of the other alternatives apply
You need to configure a new Company switch to support DTP.
Which DTP switchport mode parameter sets the switch port to actively send and respond to DTP negotiation frames？ （）
A. Access
B. No negotiate
C. Trunk
D. Dynamic desirable
E. Dynamic auto
F. None of the other alternatives apply
最新試題
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 ？ （）
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？（）
Based on the show spanning-tree vlan 200 output shown in the exhibit， which two statements about the STP process for VLAN 200 are true？ （）
What must be the same to make multiple switches part of the same Multiple Spanning Tree （MST）？（）
Refer to the exhibit. The command switchport mode access is issued on interface FastEthernet0/13 on switch CAT1. What will be the result？（）
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？（）
What two things will occur when an edge port receives a BPDU？（）
Refer to the exhibit. What will happen when one more user is connected to interface FastEthernet 5/1？ （）
Refer to the exhibit. What does the command channel-group 1 mode desirable do？ （）
Which statement is correct about the use of the virtual interface on a WLC ？（）