Designing Cisco Network Service Architectures (ARCH, legacy) — Question 1

An engineer has implemented a QoS architecture that requires a signaling protocol to tell routers which flows of packets require special treatment.
Which two mechanisms are important building blocks to establishing and maintaining QoS in this architecture? (Choose two.)

Answer options

• A. policing
• B. classification
• C. admission control
• D. tagging
• E. low-latency queuing
• F. resource reservation
• G. packetscheduling

Correct answer: B, F

Explanation

The correct options, B (classification) and F (resource reservation), are essential for QoS because classification enables the differentiation of packet flows based on specific criteria, while resource reservation ensures that the necessary bandwidth and resources are allocated for those flows. The other options, although relevant to QoS, do not directly address the core mechanisms for signaling and maintaining the treatment of packet flows.