CompTIA Network+ · N10-009
Objective 4.3: Given a scenario, apply network hardening techniques
Practice questions for Network+ objective 4.3, “Given a scenario, apply network hardening techniques.” Every question is original, written to the N10-009 exam objectives, and comes with a full explanation — answer them below to see instant grading.
This objective sits in Domain 4.0: Network Security, which is about 19% of the exam — so mastering it moves your readiness score meaningfully.
1.A security team wants to ensure that known vulnerabilities in network device operating systems are remediated. Which ongoing practice addresses this?
2.A network administrator wants to prevent Telnet from being used to manage switches and configure a replacement. Which protocol should replace Telnet?
3.A network administrator discovers that all new switches ship with the same default username and password. What is the most important first hardening step?
4.SNMPv1 and SNMPv2 transmit community strings in plaintext, making them vulnerable to eavesdropping. Which version provides authentication and encryption for SNMP communications?
5.A firewall is configured to allow only established TCP sessions initiated from the internal network and block all externally initiated connections. What type of firewall feature is this?
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