QoS (Quality of Service)is thetechnology used to prioritize and guarantee bandwidthand latency performance forVIP users and mission-critical applications. It enables:
Traffic classification and prioritization
Bandwidth guarantees and rate limiting
Low latency paths for real-time services
A. IPsec VPN– Provides secure tunneling, not traffic prioritization
B. SSH and C. SSL– Offerencryptionfor secure access, but not performance assurance
[Reference:, HCSA-IP Network V4.0 Study Guide — Chapter 8: Huawei Network Security Products and Solutions, Huawei QoS Configuration Guide for Enterprise Networks, ]
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