In DNS hierarchy, what is the top-level directory called?

In DNS hierarchy, what is the top-level directory called?

• A. Root
• B. Top-Level Domain
• C. Second Level Domain
• D. Subdomain

Answer: (A)

DNS names start at the root, the highest level of the hierarchy. The root sits at the top and anchors everything below it, often represented by a dot at the end of a domain name. From the root, the next level down is the top-level domains like .com, .org, or country codes like .uk. Each of these TLDs is a broad category under the root. To the left of a TLD is the second-level domain—the registered name, such as example in example.com. Subdomains then branch off further below, like www or mail within a domain. Since this question asks for the topmost level in the DNS structure, the correct answer is the root.

DNS names start at the root, the highest level of the hierarchy. The root sits at the top and anchors everything below it, often represented by a dot at the end of a domain name. From the root, the next level down is the top-level domains like .com, .org, or country codes like .uk. Each of these TLDs is a broad category under the root. To the left of a TLD is the second-level domain—the registered name, such as example in example.com. Subdomains then branch off further below, like www or mail within a domain. Since this question asks for the topmost level in the DNS structure, the correct answer is the root.