A service provider needs to steer traffic to different MPLS TE tunnels based on complex policy rules that consider DSCP, source prefix, and application type. The provider wants a flexible mechanism that can evaluate multiple attributes before selecting a tunnel. Which mechanism should be used?

Policy-Based Tunnel Selection (PBTS)

Class-Based Tunnel Selection (CBTS)

A service provider is configuring MPLS TE bandwidth constraints for three classes: voice, video, and data. The provider wants to guarantee that voice can never use bandwidth allocated to video or data, even if those classes are idle. Which bandwidth constraint model should be used?

Class-Based Tunnel Selection (CBTS)

Policy-Based Tunnel Selection (PBTS)

What is the purpose of the IPv6 flow label field?

To specify the source address of the packet.

To indicate the next header type.

To identify packets belonging to the same flow for QoS and load balancing.

What is the primary difference between Class-Based Tunnel Selection (CBTS) and Policy-Based Tunnel Selection (PBTS) in MPLS TE?

CBTS is used for unicast traffic, while PBTS is used for multicast traffic.

CBTS uses QoS markings, while PBTS uses policy rules that can consider other attributes.

CBTS is used in the core, while PBTS is used at the edge.

CBTS uses policy rules, while PBTS uses QoS markings.

In the MPLS QoS Short Pipe model, where are the service provider's QoS markings used?

End-to-end across the entire MPLS network, including the egress edge.

Only at the ingress edge, and the customer's markings are used on the backbone.

Only on the MPLS backbone, and the customer's markings are exposed at the egress edge.

Only at the egress edge, and the customer's markings are used on the backbone.

CiscoCertified Network Professional Service Provider

Domain 1Objective 4

1.4 Describe QoS Architecture 350-501 Practice Questions (Page 5)

Part of the Architecture domain, which accounts for 15% of the 350-501 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~8–12 in this domain), expect 1–2 from this objective — we provide 35 practice questions to prepare you well beyond it. (estimate)

35questions here

7free pages

12concepts

15%of the exam

Questions 21–25

21application · medium
A service provider needs to steer traffic to different MPLS TE tunnels based on complex policy rules that consider DSCP, source prefix, and application type. The provider wants a flexible mechanism that can evaluate multiple attributes before selecting a tunnel. Which mechanism should be used?
Select an answer first
22application · medium
A service provider is configuring MPLS TE bandwidth constraints for three classes: voice, video, and data. The provider wants to guarantee that voice can never use bandwidth allocated to video or data, even if those classes are idle. Which bandwidth constraint model should be used?
Select an answer first
23foundation · easy
What is the purpose of the IPv6 flow label field?
Select an answer first
24foundation · easy
What is the primary difference between Class-Based Tunnel Selection (CBTS) and Policy-Based Tunnel Selection (PBTS) in MPLS TE?
Select an answer first
25foundation · easy
In the MPLS QoS Short Pipe model, where are the service provider's QoS markings used?
Select an answer first

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