Objective 5.4
N10-009Given a scenario, troubleshoot common performance issues.
Objective 5.4 sits in Network Troubleshooting, which carries 24% 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.
What is the maximum number of compatibly configured Ethernet ports a single EtherChannel bundle can contain?
Correct.
Checked against cisco.com, July 2026Concept
EtherChannel bundles multiple physical Ethernet links into one logical link to increase bandwidth and reduce bottlenecking at points of congestion.
Why D
The source states each EtherChannel can consist of up to eight compatibly configured Ethernet ports, which sets the ceiling on bundled bandwidth.
Source
Cisco: Configuring EtherChannels, checked July 2026An EtherChannel consists of individual Ethernet links that are bundled into a single logical link, and each EtherChannel can consist of up to eight compatibly configured Ethernet ports.
Now you: objective 5.4 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
What happens automatically when one link within an EtherChannel bundle fails?
Sample question 2 of 3
A server on a single 1 Gbps switchport becomes a bottleneck during backup windows, dropping frames as client traffic saturates the link. The administrator bundles four physical ports between server and switch into one logical interface. Which technology addresses this contention?
Sample question 3 of 3
An administrator bundles four ports into an EtherChannel, but one port is assigned to a different VLAN and is not configured as a trunk port. The channel still forms, but total available bandwidth is reduced to only three ports' worth instead of failing entirely. Which restriction explains this reduced capacity?
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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.