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Cisco 300-320

Designing Cisco Network Service Architectures

Verified practice questions with detailed answers, clear explanations, and community discussion.

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Question 1 of 411

A network engineer is designing an access layer that requires all uplinks to be active. Furthermore, VLANs must span across the entire switch block. What design fulfills this requirement?

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Correct answer: D

The design that fulfills the requirement of having all uplinks active and spanning VLANs across the entire switch block is the Layer 2 loop-free inverted U. This design supports the extension of VLANs and Layer 2 adjacency across access layer switches while ensuring that there are no STP-blocked links, meaning all uplinks are active to comply with the specifications given in the question.

Question 2 of 411

What is an advantage of using the vPC feature in a data center environment?

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Correct answer: C

An advantage of using the vPC feature in a data center environment is that all available uplink bandwidth is utilized. This is because vPC architecture allows both uplinks to be active simultaneously, preventing the traditional spanning-tree protocol from blocking one of the redundant links and thus removing potential bottlenecks. This efficient utilization of bandwidth enhances the network's throughput and resilience.

Question 3 of 411

An organization is acquiring another company and merging the two company networks. No subnets overlap, but the engineer must limit the networks advertised to the new organization. Which feature implements this requirement?

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Correct answer: A

Route filtering is the appropriate feature for this requirement. It allows the network engineer to control which routes are advertised between the networks, limiting the networks that are visible to the new organization. This ensures that only necessary routes are shared without overlapping subnets or exposing the entire network.

Question 4 of 411

Two companies want to merge their OSPF networks, but they run different OSPF domains. Which option must be created to accomplish this requirement?

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Correct answer: A

When merging OSPF networks from two different domains, an OSPF virtual link is used to bridge the backbone areas (Area 0) of the two companies together. This is crucial because OSPF requires a contiguous backbone area for proper route advertisement between different OSPF areas. By creating a virtual link, you logically extend Area 0 to interconnect the two companies' OSPF domains, ensuring that they can function as a unified OSPF network.

Question 5 of 411

While troubleshooting an Application Centric network cluster, an engineer sees that an APIC has gone offline.

What is the minimum number of APICs required for a production ACI fabric to continue to operate?

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Correct answer: A

For a production ACI fabric to continue to operate, the minimum number of APICs required is 1. The APIC (Application Policy Infrastructure Controller) is responsible for centralized management of the ACI (Application Centric Infrastructure) fabric, but the fabric itself can continue to operate with a minimum of one APIC. While best practices and optimal configurations recommend having at least three APICs for redundancy and reliability, the operational continuity of the fabric does not strictly require more than one controller.

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Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
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Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
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Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
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Morgan Farmer
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I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

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