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Check yourself 03-dns-dhcp-and-nat: Quiz

Retrieval practice. Target >=80%.

Class 24: DNS, DHCP, and NAT
Class 24 visual reference. Use it as the map, then prove it in the reading, lesson, and lab.

Overview

Module: Network Operations
Activity type: Quiz / retrieval practice
Target: ≥80%
Objective: Describe the separate responsibilities of DNS, DHCP, and NAT

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Questions

    1. What four messages are represented by the DHCP DORA mnemonic?
    1. Which DHCP-supplied setting tells a client where to send traffic for destinations outside its local subnet?
    1. What is the difference between a recursive DNS resolver and an authoritative DNS server?
    1. Why can an old DNS answer remain visible after an authoritative record has changed?
    1. Why does PAT usually track transport ports in addition to IP addresses?
    1. Does a successful DNS lookup prove that the named application is reachable? Explain.
    1. Why should NAT not be described as a complete security policy?
    1. What is the practical difference between a DHCP reservation and manually assigning a static address on a client?
    1. What problem can occur when two interconnected sites use the same private IPv4 subnet?
    1. In the lab, why does the second request from client-a return 192.168.24.100 instead of consuming the next pool address?
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After scoring

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