FirstTry

Objective 2.1

N10-009

Explain characteristics of routing technologies.

Objective 2.1 sits in Network Implementation, which carries 20% 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.

2-1Network Implementation

Which characteristic best describes OSPF?

A link-state protocol that runs within a single Autonomous SystemCorrect · your answerCorrect: matches the abstract's description of OSPF as a link-state, single-AS protocol.
A path-vector protocol that runs between Autonomous SystemsThis describes BGP, which exchanges reachability across Autonomous Systems using AS path information.
A distance-vector protocol that advertises hop count metricsThis describes distance-vector protocols like RIP, not the link-state design OSPF uses.
A hybrid protocol that exchanges routes using TCP sessionsThis mischaracterizes OSPF's transport and mechanism; OSPF is not defined by TCP-based session exchanges in the source.

Correct.

Checked against datatracker.ietf.org, July 2026

Concept

Routing protocols divide on two axes: what each router is told, and how far that information travels. Flooding a full topology description lets every router compute its own shortest paths, which only scales inside one administrative boundary. Exchanging summarised reachability between boundaries carries policy instead of topology, and second-hand hop counts carry neither.

Why A

RFC 2328's abstract states OSPF is a link-state routing protocol designed to run internal to a single Autonomous System, matching option A exactly.

Source

OSPF is a link-state routing protocol. It is designed to be run internal to a single Autonomous System.

RFC 2328: OSPF Version 2, checked July 2026
#ospf#dynamic-routing#link-state

Now you: objective 2.1 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

2-1Network Implementation

A network administrator splits a single OSPF Autonomous System into multiple regions to limit the scope of link-state flooding and add another layer of routing protection. Which mechanism does this describe?

Sample question 2 of 3

2-1Network Implementation

What is the primary function of a BGP speaking system?

Sample question 3 of 3

2-1Network Implementation

An ISP combines several customer prefixes into a single advertisement to reduce the number of routes sent to its peers. Which BGP-4 mechanism, described in RFC 4271, supports this behavior?

Full Network+ question bank coming

We’re writing the complete bank from the official objectives right now. Leave your email and we’ll tell you when it ships, nothing else, ever.

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.

More objectives in Network Implementation