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350-501 · Question #581

Refer to the exhibit. Users on a LAN that is connected to R4 communicate to multiple servers on the corporate network. Initially, the servers were located on the same LAN. However, after congestion…

The correct answer is D. Identity the traffic to each server with a dass map and apply It to a traffic-shaping policy. To improve overall network performance and manage congestion for server traffic, the team should use a class map to identify the traffic destined for each server and then apply a traffic-shaping policy.

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Question

Refer to the exhibit. Users on a LAN that is connected to R4 communicate to multiple servers on the corporate network. Initially, the servers were located on the same LAN. However, after congestion was reported, the engineering team decided to relocate the servers to two different networks. Which task should the team perform to improve performance on the overall network while still allowing traffic to flow between the different hosts?

Exhibit

350-501 question #581 exhibit

Options

  • AIdentify the traffic to each server in a prefix list and apply a traffic policing policy.
  • BIdentity the traffic to each server with an ACL and apply the ACL to a threshold policy that drops
  • CIdentity the traffic to each server in a distribute fist and implement FIFO to the Interfaces In the
  • DIdentity the traffic to each server with a dass map and apply It to a traffic-shaping policy.

How the community answered

(25 responses)
  • A
    8% (2)
  • B
    4% (1)
  • C
    16% (4)
  • D
    72% (18)

Why each option

To improve overall network performance and manage congestion for server traffic, the team should use a class map to identify the traffic destined for each server and then apply a traffic-shaping policy.

AIdentify the traffic to each server in a prefix list and apply a traffic policing policy.

Prefix lists are primarily used for route filtering, not for traffic classification in QoS policies, and while policing can manage congestion, shaping is generally preferred when the goal is to allow all traffic to flow.

BIdentity the traffic to each server with an ACL and apply the ACL to a threshold policy that drops

While ACLs can identify traffic, applying them to a policy that simply drops traffic (policing) is more aggressive than shaping and may not fully align with the goal of 'still allowing traffic to flow' for all connections.

CIdentity the traffic to each server in a distribute fist and implement FIFO to the Interfaces In the

Distribute lists are used for filtering routing updates, not for classifying user data traffic for QoS, and implementing FIFO offers no advanced congestion management or performance improvement.

DIdentity the traffic to each server with a dass map and apply It to a traffic-shaping policy.Correct

A class map is the standard and most effective method for classifying specific traffic flows for QoS policies. Applying a traffic-shaping policy allows the network to regulate the transmission rate, buffering excess traffic rather than dropping it, thereby smoothing traffic bursts and improving performance while ensuring all data eventually flows.

Concept tested: QoS traffic classification and shaping

Source: https://www.cisco.com/c/en/us/td/docs/ios/qos/configuration/guide/12_2sr/qos_12_2sr_book/qos_intro.html

Topics

#Quality of Service (QoS)#Traffic Shaping#Congestion Management#Class-map

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