CompTIA N10-009 Exam Questions & Answers

Correct Answer: AE

Disabling unused ports prevents unauthorized access and reduces the attack surface by ensuring that no inactive or unmonitored entry points are available for exploitation. Changing default passwords is critical for security because default credentials are widely known and can easily be exploited by attackers. These techniques are fundamental steps in hardening devices against unauthorized access and ensuring network security. References: CompTIA Network+ Exam Objectives and official study guides.

Correct Answer: B

For a web server that requires all connections to be encrypted, port 80 (HTTP) should be disabled. Port 80 is used for unencrypted web traffic, whereas port 443 is used for HTTPS, which provides encrypted communication. Port 80 (HTTP):

This port is used for unsecured web traffic. Disabling this port ensures that all web traffic must use HTTPS, which encrypts the data in transit. Port 443 (HTTPS): This port is used for secure web traffic via SSL/TLS encryption. Keeping this

port open ensures that secure connections can be made to the web server.

Other Ports:

Network References:

CompTIA Network+ N10-007 Official Certification Guide: Discusses the roles and security implications of various ports and protocols. Cisco Networking Academy: Provides training on secure web server configuration and port management.

Network+ Certification All-in-One uide: Covers port security and best practices for securing web servers.

Correct Answer: A

Spanning tree is a protocol that prevents network loops by dynamically disabling or enabling switch ports based on the network topology. Network loops can cause intermittent connectivity issues, such as broadcast storms, MAC address

table instability, and multiple frame transmission. By enabling spanning tree, the network administrator can ensure that there is only one active path between any two network devices at any given time.

References:

CompTIA Network+ N10-008 Certification Exam Objectives, page 91 CompTIA Network+ Cert Guide: Switching and Virtual LANs, page 172