Final answer:
True, the DNS domain name tree is indeed structured into three sections: top-level domains (TLDs), second-level domains (SLDs), and subdomains.
Step-by-step explanation:
The statement that a DNS domain name tree is divided into three different sections is true. The Domain Name System (DNS) is organized in a hierarchical structure. At the top of this hierarchy is the root domain, represented by a dot. Below this level, there are various top-level domains (TLDs), which can be generic (gTLDs) such as .com, .org, .net, or country code (ccTLDs) like .uk, .us.
Each TLD has its own domain names, which are the second level domains (SLDs). Beneath the SLDs are subdomains, which further organize and hierarchize the system. For example, in the domain name 'www.example.com', '.com' is the TLD, 'example' is the SLD, and 'www' is a subdomain.