Study the Exhibit below carefully:
London#show vtp
VTP Version: 2
Configuration Revision: 0
Maximum VLANs supported locally: 64
Number of existing VLANs: 5
VTP Operating Mode: Client
VTP Domain Name: London
VTP Pruning Mode: Disabled
VTP V2 Mode: Disabled
VTP Traps Generation: Disabled
Based on the information given above, what is the VTP function of this particular switch?（）

You are a senior network administrator at TestKing and your trusty junior administrator tells you that he failed his task of adding VLAN 50 to a Catalyst switch in the network. You enter in the 'show vtp status' command and get this output:
TK2# show vtp status
VTP Version :2
Configuration Revision :7
Maximum VLANs supported local :68
Number of existing VLANs :8
VTP Operating Mode :Client
VTP Domain Name :corp
VTP Pruning Mode :Disabled
VTP V2 Mode :Disabled
VTP Traps Generation :Disabled
MD5 digest :0x22 0xF3 0x1A
Configuration last modified by 172.18.22.15 at 5-28-03 1t:53:20
What commands must be issued on this switch to add VLAN 50 to the database?（）