According to the author, what is one reason why the Internet is sometimes slow

* Hướng dẫn giải

Dẫn chứng: The computer systems which run the Internet have not been able to keep up with the demand. Also, sometimes a request for information must pass through many routing computers before the information can be obtained. A request for information made in Paris might have to go through computers in New York, Los Angeles and Tokyo in order to obtain the required information. Consequently, service is often slow and unpredictable. Service also tends to be worse when the Internet is busiest – during the business day of the Western Hemisphere - which is also when companies need its service the most.

Đáp án đúng: B. Often a request must travel through many computers before it reaches its final destination.

Dịch: Thường thì một yêu cầu phải di chuyển qua nhiều máy tính trước khi nó đến đích cuối cùng.