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350-501 Architecture Practice Question

An SP is deploying network slicing for 5G services. They need to ensure ultra-reliable low-latency communication (uRLLC) slice has dedicated bandwidth and low latency. Which mechanism is best suited to guarantee performance for this slice?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Flexible Algorithm (Flex-Algo) in IGP

Network slicing using dedicated resources via Flex-Algo or resource reservation can guarantee performance. Flex-Algo allows IGP to compute paths based on constraints like latency, providing dedicated paths for uRLLC.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    Class of Service (CoS) marking on all traffic

    Why it's wrong here

    CoS marking alone does not guarantee dedicated bandwidth or latency.

  • ✗

    MPLS Traffic Engineering with RSVP-TE

    Why it's wrong here

    RSVP-TE can reserve bandwidth but is less flexible for multiple slices.

  • ✓

    Flexible Algorithm (Flex-Algo) in IGP

    Why this is correct

    Correct. Flex-Algo can compute paths with low-latency constraints for uRLLC slices.

  • ✗

    DiffServ with EF PHB

    Why it's wrong here

    DiffServ provides QoS but not strict path isolation or guaranteed latency.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This 350-501 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-501 exam.