Without_______, a customer's high priority traffic can be dropped before its low priority traffic.

Question

Options

• Apacket filtering
• Bprioritization of traffic flows
• Cleast cost routing
• DOAM functionality
• Eseparation between the data plane and the control plane

• A
  7% (4)
• B
  87% (47)
• C
  4% (2)
• D
  2% (1)

Explanation

Prioritization of traffic flows (QoS) assigns queuing and forwarding preference to packets based on their class or marking. Without it, network devices use simple FIFO queuing - treating all packets equally - so during congestion, high-priority packets (e.g., VoIP) can be tail-dropped before lower-priority bulk data that arrived earlier in the queue.

Why the distractors are wrong:

• A. Packet filtering controls which traffic is allowed or blocked (access control), not the order in which it is delivered or dropped.
• C. Least cost routing selects the cheapest/most efficient path to a destination; it has no bearing on how packets are queued or dropped along that path.
• D. OAM functionality covers Operations, Administration, and Maintenance - monitoring, fault detection, and performance measurement - not queue management.
• E. Data/control plane separation is an architectural concept (central to SDN) about where forwarding decisions are made, not how competing traffic classes are handled under congestion.

Memory tip: Think of an emergency room - without triage (prioritization), patients are seen in strict arrival order, meaning a heart attack patient could wait behind someone with a minor bruise. QoS is triage for network packets.

No community discussion yet for this question.