CCIE系列認(rèn)證單項(xiàng)選擇題每日一練(2019.07.29)

Given the following configuration： 
port-profile type ethernet DATA-UPLINK  
vmware port-group 
switchport trunk allowed vlan 1-3967，4048-4093 
channel-group auto mode on 
no shutdown 
state enabled 
port-profile type ethernet MGMT-UPLINK 
vmware port-group 
 
switchport trunk allowed vlan 10-12 
channel-group auto mode on 
no shutdown 
state enabled 
 
  
VEMs are seen to be joining and then are lost from the Cisco VSM. How would you resolve this issue？（）

Refer to the exhibit.Which statement describes DLCI 17?（）

On a Cisco Nexus 7000 Series Switch， what is the purpose of this command？（） 
switch# config terminal 
switch（config）# mac address-table learning-mode conversational vlan 1-10 
switch（config）#