Which term describes a policy-based mechanism to prioritize different types of traffic on a network?

• A. Converged Network
• B. Quality of Service
• C. Intranet
• D. Extranet

Answer: (B)

Quality of Service provides the policy-based control to prioritize different types of traffic on a network. It lets you classify traffic into classes and apply treatment—such as higher priority, guaranteed bandwidth, or rate limiting—to each class. Techniques like marking packets (DSCP/CoS), queuing disciplines (priority, weighted fair queuing), and shaping or policing are used to enforce these policies, ensuring latency-sensitive traffic such as voice and video gets the resources it needs and other traffic doesn’t flood the network. The other terms describe broader concepts (a network where multiple services share the same infrastructure; an internal private network; or a private network extended to external partners) but do not specify a mechanism for prioritizing traffic.