CompTIA Updated N10-009 Exam Questions and Answers by emmeline

After implementing a solution and putting preventive measures in place, the next step is to verify that the system is functioning correctly. This ensures that the issue has been fully resolved.

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Comprehensive and Detailed Explanation (paraphrased, aligned to N10-009):

HTTPS is HTTP encapsulated in TLS (the successor to SSL), which provides confidentiality, integrity, and server authentication for web traffic.

A. SSH secures remote shell and tunnels, not HTTPS.

C. SCADA refers to industrial control systems, not a transport security protocol.

D. RADIUS is an AAA protocol for authentication/authorization/accounting, not the web encryption layer.

References (CompTIA Network+ N10-009):

Domain: Network Standards, Protocols, and Implementations — Web protocols (HTTP/HTTPS), TLS handshake and purpose, encryption in transit.

A client-to-site VPN (remote-access VPN) is designed to let an individual user securely connect into an organization’s network over an untrusted network (like the internet) and access resources as if the user were locally connected . Network+ objectives emphasize VPNs as encrypted tunnels that provide confidentiality and integrity for traffic, commonly using technologies such as IPsec or SSL/TLS-based VPNs. With a client-to-site VPN, the user’s device establishes a tunnel to the corporate VPN gateway, receives routes (and sometimes DNS settings), and can reach internal subnets and cloud resources according to policy.

A jump box/host is a hardened intermediate system used to access sensitive segments, but it does not make the user’s device behave as if it is directly on the network; it provides controlled administrative access. SSH is a secure remote management protocol for connecting to a host’s command line—useful for administration, not full network access to multiple internal resources. A GRE tunnel provides encapsulation but does not provide encryption by itself , so it is not inherently “securely access” unless combined with additional security (e.g., GRE over IPsec). Therefore, client-to-site VPN is the correct choice.

nmap (Network Mapper) is the best tool in this scenario. It can scan the 192.168.1.0/24 subnet to discover live hosts, open ports (like Telnet on port 23), and device types. It’s ideal for mapping and auditing the network.

A. dig is a DNS lookup tool; not useful for identifying hosts on a subnet.

C. tracert shows the path packets take to a destination, not for host discovery.

D. telnet is the protocol being used, not a tool for scanning or identifying devices.

???? Reference:

CompTIA Network+ N10-009 Official Objectives: 5.1 – Given a scenario, use the appropriate network troubleshooting tools.