Which option lists traffic prioritization from lowest to highest in a cell/area zones QoS?

Question

Options

• Avoice, video, bulk data, scavenger
• Bscavenger, video, PTP-event, network control
• Cbulk data, network control, video, PTP-event
• DPTP-event, video, bulk data, voice
• Ebulk data, call signaling, network control, PTP-event

• B
  7% (2)
• D
  4% (1)
• E
  89% (25)

Explanation

Option E correctly orders the four traffic classes from lowest to highest priority as they are defined in Cisco's QoS design for cell/area zones: bulk data (large file transfers tolerant of delay) → call signaling (SIP/H.323 setup traffic needing moderate priority) → network control (routing protocols like OSPF/BGP that keep the network running) → PTP-event (IEEE 1588 Precision Time Protocol, which demands near-deterministic delivery for sub-microsecond clock synchronization).

Why the distractors fail:

• A places voice lowest and scavenger highest - the exact opposite of standard QoS; scavenger is always the lowest class.
• B includes scavenger correctly at the bottom but inverts network control and PTP-event, and swaps out the required classes (call signaling, bulk data).
• C ranks network control below video, which is wrong - infrastructure control traffic outranks multimedia.
• D puts PTP-event at the bottom, which is the opposite of reality; PTP needs the highest priority because even microseconds of jitter degrade time sync accuracy.

Memory tip: Use the mnemonic "B-C-N-P" (Bulk → Call signaling → Network control → PTP) and think of it as climbing a ladder of network criticality: data waits, signaling matters, the network must stay up, and time itself cannot be late.

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