CompTIA A+ Core 1 (220-1201)NetworkingMedium
A home user has multiple devices streaming video and making VoIP calls simultaneously, causing choppy call quality. Which SOHO router feature should the technician enable to prioritize voice traffic over streaming traffic?
- AQoS
- BNAT
- CUPnP
- DDMZ
Show answer & explanationAnswer & explanation
Correct answer: A. QoS
Quality of Service (QoS) allows a router to prioritize certain types of traffic, such as VoIP, over less time-sensitive traffic like video streaming, reducing latency and jitter for voice calls.
Why the other options are wrong
- B. NAT translates private IP addresses to a public IP and does not manage traffic priority.
- C. UPnP automatically opens ports for applications but does not prioritize traffic types.
- D. DMZ exposes a single host to all inbound traffic, unrelated to traffic prioritization.
Quality of Service (QoS)
A router feature that prioritizes certain network traffic types (e.g., VoIP, gaming) over others to improve performance for time-sensitive applications.
- Reduces latency/jitter for prioritized traffic
- Common uses: VoIP, video conferencing, gaming
- Configured in SOHO router admin settings
Memory trick: QoS = 'Quiet other stuff, Speak first!' for VoIP.