Objective 4.3
N10-009Given a scenario, apply network security features, defense techniques, and solutions.
Objective 4.3 sits in Network Security, which carries 14% 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.
A technician configures a switch port connected to one desktop as a static-access port in VLAN 20 rather than a dynamic trunk. What security benefit results from this configuration?
Correct.
Checked against cisco.com, August 2026Concept
Device hardening reduces attack surface by limiting what a switch port is permitted to carry.
Why D
A static-access port assigned to VLAN 20 forwards only that VLAN's traffic, unlike a trunk that could carry many VLANs and be manipulated.
Source
Cisco: Configuring VLANs, checked August 2026A static-access port can belong to one VLAN and is manually assigned to that VLAN.
Now you: objective 4.3 questions
No account needed. The explanation opens when you answer.
Sample question 1 of 3
You enable ESP rather than AH on a site to site tunnel carrying payroll data between two offices. Which set of services does ESP provide to the protected payload?
Sample question 2 of 3
An engineer inspects an IPsec packet and finds the ESP header sitting before an encapsulated IP header. Which mode is in use?
Sample question 3 of 3
A configuration enables ESP encryption with no integrity mechanism alongside it. Against which attacker does RFC 4303 say this generally still defends?
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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.