Final answer:
The correct answer is A) Tier 1 ISP. A regional ISP is an internet service provider that operates in a specific region, connecting local users to the internet. However, in this case, the student is referring to an ISP that connects multiple regional ISPs together, which is known as a Tier 1 ISP.
Step-by-step explanation:
The correct answer is A) Tier 1 ISP.
A regional ISP is an internet service provider that operates in a specific region, connecting local users to the internet. However, in this case, the student is referring to an ISP that connects multiple regional ISPs together. This is known as a Tier 1 ISP.
Tier 1 ISPs are at the top of the hierarchical structure of the internet, and they have their own large network infrastructure to connect different regions and countries. Examples of Tier 1 ISPs include AT&T, Verizon, and Level 3 Communications.