Which statement best describes the Integrated Services (IntServ) QoS model?

It provides per-flow QoS guarantees through resource reservation.

It uses MPLS TE tunnels to provide bandwidth guarantees.

It provides QoS only for aggregate traffic classes.

It classifies packets at the edge and applies PHBs in the core.

In a service provider network, where is the typical trust boundary for QoS markings?

At the customer edge (CE) router.

At the provider edge (PE) router.

A service provider has multiple MPLS TE tunnels between two PEs, each engineered for different delay characteristics. The provider wants voice traffic to automatically use the low-delay tunnel and data traffic to use the best-effort tunnel, based on the DiffServ class of the traffic. Which mechanism should be configured?

Class-Based Tunnel Selection (CBTS)

Policy-Based Tunnel Selection (PBTS)

A service provider is implementing DiffServ-aware TE (DS-TE) and wants to ensure that voice traffic can use bandwidth reserved for video when video is not utilizing it, but video can never preempt voice. Which bandwidth constraint model meets this requirement?

Policy-Based Tunnel Selection (PBTS)

Class-Based Tunnel Selection (CBTS)

What is a per-hop behavior (PHB) in the DiffServ model?

A path selection mechanism for MPLS TE.

A forwarding treatment applied to a packet based on its DSCP marking.

A method for classifying packets at the edge.

A reservation of bandwidth for a specific flow.

CiscoCertified Network Professional Service Provider

Domain 1Objective 4

1.4 Describe QoS Architecture 350-501 Practice Questions (Page 6)

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 26–30

26foundation · easy
Which statement best describes the Integrated Services (IntServ) QoS model?
Select an answer first
27foundation · easy
In a service provider network, where is the typical trust boundary for QoS markings?
Select an answer first
28application · medium
A service provider has multiple MPLS TE tunnels between two PEs, each engineered for different delay characteristics. The provider wants voice traffic to automatically use the low-delay tunnel and data traffic to use the best-effort tunnel, based on the DiffServ class of the traffic. Which mechanism should be configured?
Select an answer first
29application · medium
A service provider is implementing DiffServ-aware TE (DS-TE) and wants to ensure that voice traffic can use bandwidth reserved for video when video is not utilizing it, but video can never preempt voice. Which bandwidth constraint model meets this requirement?
Select an answer first
30foundation · easy
What is a per-hop behavior (PHB) in the DiffServ model?
Select an answer first

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