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Objective 1.8N10-009

1.8 Summarize evolving use cases for modern network environments.

Objective 1.8 sits in Networking Concepts, which carries 23% of the Network+ exam. The questions below are original, written from the official objective title above, and each explanation cites the CompTIA page it rests on.

Objective title verbatim from the official objectives. CompTIA exam page ↗

A worked example

Shown solved, with the whole explanation open: this is what every question here carries.

1-8Networking ConceptsEasy

According to RFC 4861, which protocol allows IPv6 nodes on the same link to discover each other's presence, resolve link-layer addresses, locate routers, and confirm reachability?

Address Resolution Protocol used by IPv4 nodes on a linkARP performs address resolution in IPv4, a function NDP replaces in IPv6.
Neighbor Discovery Protocol used by IPv6 nodes on a linkCorrect · your answerCorrect: this is the exact function RFC 4861 assigns to Neighbor Discovery for IPv6.
Dynamic Host Configuration Protocol version 6 for address leasesDHCPv6 assigns addresses and configuration but does not perform link-layer address resolution.
Internet Control Message Protocol version 4 for error reportingICMPv4 handles error and control messaging in IPv4, not IPv6 neighbor operations.

Correct.

Concept

IPv6 addressing under modern network environments relies on Neighbor Discovery (NDP) instead of the mechanisms used by IPv4.

Why B

RFC 4861 defines Neighbor Discovery as the protocol IPv6 nodes use for presence discovery, address resolution, router finding, and reachability confirmation on a shared link.

Source

#ipv6#neighbor discovery#modern network environments

Now you: objective 1.8 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

1-8Networking ConceptsModerate

A network engineer troubleshoots an IPv6 host that cannot find the link-layer address of a directly connected neighbor before sending unicast traffic. Per RFC 4861, which message should the host send to resolve this address?

Sample question 2 of 3

1-8Networking ConceptsModerate

A carrier gives new subscribers IPv6-only service, and a client on that service has to reach a legacy IPv4-only web server. Which pair of mechanisms carries that session?

Sample question 3 of 3

1-8Networking ConceptsHard

An engineer brings up an IPv6-in-IPv4 configured tunnel and leaves the static tunnel MTU at the value the specification recommends. What should the tunnel interface report?

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Read the sources

These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.

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