Which DNS level designates a specific page within a domain, such as 'blog' in 'blog.example.com'?

Which DNS level designates a specific page within a domain, such as 'blog' in 'blog.example.com'?

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

Answer: (D)

In DNS, names are organized in levels, with a subdomain creating a distinct host under a domain. The part before the main domain, like "blog" in blog.example.com, designates a separate host or service within example.com. That’s what a subdomain does—let you point to a specific area such as a blog without changing the main domain. The other parts (.com and example) identify the broader domain (the TLD and the second-level domain), not the particular subdivision. A web page’s exact address may also include a path after the domain (like /blog), but that path is not a DNS level. So blog is the subdomain.

In DNS, names are organized in levels, with a subdomain creating a distinct host under a domain. The part before the main domain, like "blog" in blog.example.com, designates a separate host or service within example.com. That’s what a subdomain does—let you point to a specific area such as a blog without changing the main domain. The other parts (.com and example) identify the broader domain (the TLD and the second-level domain), not the particular subdivision. A web page’s exact address may also include a path after the domain (like /blog), but that path is not a DNS level. So blog is the subdomain.