情報処理技術者試験で頻出の「内部DNSサーバー」を実際に構築してみた

The "internal DNS server" frequently appears in network diagrams for the Information Technology Engineers Examination (Applied Information Technology Engineer Examination, Information Security Specialist Examination, Network Specialist Examination). While many may have seen it in textbooks or problem statements, few have actually interacted with its inner workings. In fact, it has repeatedly appeared in multiple exams and years, as shown below: Applied Information Technology Engineer Examination, Fall 2025, Question 5 Applied Information Technology Engineer Examination, Spring 2022, Question 5 Information Security Specialist Examination, Fall 2019, Afternoon I, Question 1 Information Security Specialist Examination, Spring 2017, Afternoon I, Question 2 This time, we will demonstrate how to actually build an authoritative DNS server (BIND) using a Mac, and: Create zone information for a custom domain Resolve the FQDN and ping it from Windows/iPhone Experience the mechanism of an internal DNS server: "It answers for domains it manages itself, and looks up unknown domains." This demonstration covers the following steps. If you're wondering, "What exactly does an internal DNS server do?", then please check this out. -- Please subscribe and like! #InformationTechnologyEngineerExam #AppliedInformationTechnologyEngineerExam #InformationSecuritySupportSpecialist #NetworkSpecialist #DNS #InternalDNSServer