Under the Domain Name Service (DNS)protocol,in the address someone@name1.name2.name3.name4,the host name is ____.
A) someone
B) name1
C) name2
D) name3

Question

Quizplus · Accepted Answer

In the DNS protocol, the host name refers to the first domain label following the user's name. In the given address someone@name1.name2.name3.name4, "name1" is the first domain label and thus represents the host name.

Under the Domain Name Service (DNS)protocol,in the Address Someone@name1