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Check yourself 02-local-dns-and-friendly-service-names: Quiz

Retrieval practice. Target >=80%.

Overview

Module: Edge Access & VPN
Activity type: Quiz / retrieval practice
Target: ≥80%
Objective: Explain the roles of stub resolvers, recursive resolvers, authoritative data, and DNS caches.

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Questions

    1. Which special-use domain is recommended by RFC 8375 for residential home networks?
    1. What is the difference between an A record and an AAAA record?
    1. Why can a client continue using an old address after a DNS record has been changed?
    1. What does NXDOMAIN communicate to a DNS client?
    1. Why does the lab query 127.0.0.1 on port 1053 explicitly?
    1. Does successful DNS resolution prove that the target web application is running and trustworthy?
    1. Why should ordinary private unicast DNS names generally avoid the local suffix?
    1. What is a likely explanation when an A query succeeds but an AAAA query for the same name has no answer?
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After scoring

  • Missed items → return to Reading → redo Feynman Retry → reattempt.
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