$75$ points

In DNS$,$ an identifier that identifies a particular portion of a domain name, that is one node in the tree is called a

Sub$-$domain

Domain Name

Domain

Label

$8$

$5$ points

In DNS$,$ a $$ is an entity that includes everything $($all nodes in the tree$)$ that are either AT or BELOW a specific point $($node$)$ in the DNS tree.

Domain Name

Domain

Ordered Label

Sub$-$domain

$9$

$5$ points

In DNS$,$ an ordered collection of one or more labels representing any path from the bottom toward the top $($toward root$)$ is called a $$

Unordered Label

Sub$-$domain

Domain Name

Domain