Free 300-420 Exam Braindumps (page: 35)

Page 35 of 73

An architect must address sustained congestion on the access and distribution uplinks of a network. QoS has already been implemented and optimized, but it is no longer effective in ensuring optimal network performance. Which two solutions should the architect use to improve network performance. (Choose two.)

  1. Configure selective packet discard to drop noncritical network traffic.
  2. Bundle additional uplinks into logical EtherChannels.
  3. Utilize random early detection to manage queues.
  4. Implement higher-speed uplink interfaces.
  5. Reconfigure QoS based on the IntServ model.

Answer(s): B,D



An engineer must design a QoS solution for a customer that is connected to an ISP over a 1Gbps link with a 100Mbps CIR. The ISP aggressively drops all traffic received over the CIR, which is causing numerous TCP retransmissions. The customer is not using any RTP applications but wants to maximize bandwidth usage up to the CIR. Which QoS solution should the engineer choose?

  1. policing
  2. queuing
  3. traffic shaping
  4. policer with markdown

Answer(s): C



The customer solution requires QoS to support streaming multimedia over a WAN. An architect chooses to use Per-Hop Behavior. Which solution should the engineer use to classify and mark traffic traveling between branch sites?

  1. CBWFQ with DSCP AF2
  2. LLQ with DSCP EF
  3. CBWFQ with DSCP AF3
  4. LLQ with DSCP AF4

Answer(s): C



An engineer must design an in-band management solution for a customer with branch sites. The solution must allow remote management of the branch sites using management protocols over an MPLS WAN. Queueing is implemented at the remote sites using these classes:

-Class1 equals voice traffic
-Class2 equals mission-critical traffic
-Class3 equals default traffic

How must the solution prioritize the management traffic over the WAN?

  1. Mark the traffic with DSCP EF and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
  2. Mark the traffic with DSCP CS1 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3.
  3. Mark the traffic with DSCP CS6 and map into Class1 with a minimum bandwidth assigned by reducing the bandwidth available to Class2.
  4. Mark the traffic with DSCP CS2 and map into Class2 with a minimum bandwidth assigned by reducing the bandwidth available to Class3.

Answer(s): D



Page 35 of 73



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Abhinayan commented on May 25, 2023
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