Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsMedium
A network engineer is configuring a network device to prioritize voice and video traffic over regular data traffic to ensure smooth communication during peak hours. Which network concept are they implementing?
- ANetwork Segmentation
- BLoad Balancing
- CQuality of Service (QoS)
- DLink Aggregation
Show answer & explanationAnswer & explanation
Correct answer: C. Quality of Service (QoS)
Quality of Service (QoS) is a set of technologies that guarantee a certain level of performance for specific types of traffic on a network, such as prioritizing voice and video to reduce latency and jitter.
Why the other options are wrong
- A. Network segmentation divides a network into smaller, isolated segments to improve security and performance, but doesn't inherently prioritize traffic types.
- B. Load balancing distributes network traffic across multiple servers or links to improve performance and availability, not to prioritize specific traffic types.
- D. Link aggregation combines multiple network connections to increase throughput and provide redundancy, not for prioritizing specific traffic.
Quality of Service (QoS)
Quality of Service (QoS) refers to technologies that manage network traffic to reduce packet loss, latency, and jitter on a network.
- Prioritizes certain types of traffic (e.g., voice, video).
- Ensures acceptable performance for critical applications.
- Uses mechanisms like classification, marking, queuing, and policing.
Memory trick: QoS: Quality Over Speed.