nerdexam
Nokia

4A0-107 · Question #30

Which of the following are categories of forwarding classes on the Alcatel-Lucent 7750 SR? (Choose two)

The correct answer is A. Real-time D. High priority. On the Alcatel-Lucent 7750 SR, forwarding classes are organized into defined scheduling categories, and Real-time (A) and High priority (D) are two of the recognized categories - Real-time handles delay-sensitive traffic like voice/video with strict scheduling treatment, while…

QoS Fundamentals

Question

Which of the following are categories of forwarding classes on the Alcatel-Lucent 7750 SR? (Choose two)

Options

  • AReal-time
  • BAssured
  • CNon-conforming
  • DHigh priority
  • EIn-profile

How the community answered

(23 responses)
  • A
    87% (20)
  • B
    9% (2)
  • C
    4% (1)

Explanation

On the Alcatel-Lucent 7750 SR, forwarding classes are organized into defined scheduling categories, and Real-time (A) and High priority (D) are two of the recognized categories - Real-time handles delay-sensitive traffic like voice/video with strict scheduling treatment, while High priority serves important control or premium traffic that needs preferential queuing over best-effort flows.

Why the distractors are wrong:

  • B (Assured) sounds plausible because "Assured Forwarding" (AF) is a specific forwarding class name on the 7750 SR, but it is not itself a forwarding class category - this is a classic naming-trap distractor.
  • C (Non-conforming) and E (In-profile) describe traffic conformance states used in policing/metering contexts (i.e., whether traffic stays within a committed rate), not categories of forwarding classes.

Memory tip: Use "RH" - Real-time and High priority are the categories that get special treatment. If an answer sounds like a policing term (conforming, in-profile, non-conforming), it's describing a rate concept, not a forwarding class category.

Topics

#Forwarding Classes#QoS Classification#Real-time Traffic#Priority Levels

Community Discussion

No community discussion yet for this question.

Full 4A0-107 Practice