IOM 2020, Блиц — Задача 71
The Blitz-contest of IOM-2020
Условие
Which of the following statements about “Domain Name System” are true?
- The Domain Name System (DNS) is a centralized naming system.
- DNS is a decentralized naming system.
- DNS database contains IP-addresses.
- DNS database contains SMTP mail exchangers.
- DNS database is a general purpose database.
Отговори
BCD
Answer key: BCD (the second, third and fourth listed options).
Решение
Внимание: Непълно решение
The source contains only the answer key, no worked solution.
Answer: BCD
Оригинал в Архива: iom-2020-blitz-tasks.pdf · официални решения: iom-2020-blitz-answers.pdf