What is the relationship between the Domain Name System （DNS） and LDAP？（） ["All the root DNS servers maintain information in a distributed LDAP tree.","DNS clients access DNS information by making LDAP queries to DNS servers.","An LDAP DN attribute is a Domain Name.","It is currently recommended to express DN as a sequence of Domain components."]
不对称膜
教学模式
下列既可以做OLT又可以做MDU的是（） ["MA5680T","MA5606T","MA562X","MA561X"]
当将多个交换机加入到MST region当中会发生什么（what happen）？
优良葡萄酵母所具有的特性。
