Mark the letter A, B, C, or D on your answer sheet to indicate the cor

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.    

"No one runs the internet. It’s organized as a decentralized network of networks. Thousands of companies, universities, governments, and other (16) ______ operate their own networks and exchange traffic with (17) ______ other based on voluntary interconnection agreements. 

The shared technical standards (18) ______ make the internet work are managed by an organization called the Internet Engineering Task Force. The IETF is an open organization; anyone is free to attend meetings, propose new standards, and recommend changes to existing standards. No one is required to adopt standards endorsed by the IETF, but the IETF’s consensus-based decision-making process helps to (19) ______ that its recommendations are generally adopted by the internet community. 

The Internet Corporation for Assigned Names and Numbers (ICANN) is sometimes described as being (20) ______ for internet governance. As its name implies, ICANN is in charge of distributing domain names (like vox.com) and IP addresses. But ICANN doesn’t control who can connect to the internet or what kind of information can be sent over it."

• A. A. function
• B. B. stress
• C. C. exchange
• D. D. ensure

function: hoạt động
stress: nhấn mạnh
exchange: trao đổi
ensure: đảm bảo
=> D phù hợp về nghĩa