DHCP and DNS
How clients get addresses and resolve names, and how to troubleshoot both from the evidence.
- Level
- Beginner
- Length
- About 45 minutes
- Contents
- 3 lessons · 1 video · final exam
- Status
- Published · updated 1 Oct 2026
Skills you'll practise
- Describe the DHCP lease process and what a relay (IP helper) does
- Match common DNS record types to their purpose
- Read nslookup output and tell a missing record from an unreachable server
- Find overlaps between DHCP scopes and static assignments
Course outline
- 1.DHCP and DNS: the two services behind 'the internet is down'Video · 2 min
- 2.How DHCP hands out addressesLesson · 14 min
- 3.How DNS answers questionsLesson · 14 min
- 4.Troubleshooting DHCP and DNS togetherLesson · 18 min
- 5.DHCP and DNS: knowledge checkKnowledge check · 19 questions
- 6.Intranet unreachable after server migrationScenario
- 7.Final exam8 questions · passing it completes the course, so people who already know the material can test out
Sources it draws on
The lessons and questions are written from these references, so learners can go back to the original.
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