If the IP phone works but the workstation doesn't, it indicates that theVoice VLAN is functioningcorrectly, but theData VLAN (C)is either misconfigured or missing. The workstation typically connects through the phone, which tags voice and data traffic separately usingVLANs.
* A. Voice VLANis for the IP phone, which is already working.
* B. Native VLANis for untagged traffic on trunk ports, but doesn't control access directly.
* D. Trunk portis more relevant to switch interconnections than individual workstation ports.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 2.3 - Given a scenario, configure and verify VLANs.

The correct answer is Platform as a Service (PaaS). PaaS provides developers with a ready-to-use platform that includes runtime environments, developer tools, middleware, and database services. Developers can focus on writing code while the provider handles security patches, updates, and infrastructure management.
A . CaaS (Containers as a Service) focuses on deploying and managing containerized applications, not providing full developer platforms.
B . IaaS delivers virtual machines, storage, and networking, but administrators must install and maintain the OS, middleware, and updates.
D . SaaS provides end-user applications (e.g., email, CRM), not platforms for development.
By using PaaS, the developers can build applications quickly and cost-effectively without worrying about underlying infrastructure or system maintenance.

Nmap (Network Mapper) is a powerful network scanning tool used to discover hosts and services on a computer network. It can be used to identify which ports are open on a remote server, which can help diagnose access issues to services like a remote file server.
Port Scanning: Nmap can perform comprehensive port scans to determine which ports are open and what services are running on those ports.
Network Discovery: It provides detailed information about the host's operating system, service versions, and network configuration.
Security Audits: Besides troubleshooting, Nmap is also used for security auditing and identifying potential vulnerabilities.
Network Reference:
CompTIA Network+ N10-007 Official Certification Guide: Covers network scanning tools and their uses.
Nmap Documentation: Official documentation provides extensive details on how to use Nmap for port scanning and network diagnostics.
Network+ Certification All-in-One Exam Guide: Discusses various network utilities, including Nmap, and their applications in network troubleshooting.

See the answer and solution below.
Explanation:
A screenshot of a computer screen AI-generated content may be incorrect.

Comprehensive and Detailed Explanation:
Full duplex modeallows devices tosend and receive data simultaneously, improving network performance andreducing congestion, which iscritical for VoIP and video conferencing.
Breakdown of Options:
* A. A VLAN with 100Mbps speed limits- VLANssegment trafficbutlimiting speedsto100Mbpswould worsenvideo performance.
* B. An IP helper to direct VoIP traffic-IP helperis used forDHCP relay,notfor VoIP optimization.
* C. A smaller subnet mask- A smaller subnet reducesIP address availabilitybut doesnot improve network performance.
* D. Full duplex on all user ports-Correct answer.Full duplex eliminates collisions, allowingbetter VoIP and video performance.