Performance Problems CNX-001 Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A DevOps team is deploying a new microservice to a cloud environment. The service is expected to handle a high volume of small, synchronous requests. During load testing, the team observes that the 99th percentile latency is 800 ms, while the median latency is 50 ms. The team needs to determine if this latency is acceptable for their users. Which metric should the team primarily focus on to evaluate the user experience?

   • AThe average latency
   • BThe network round-trip time
   • CThe 99th percentile latency
   • DThe median latency
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2. 7expert · hard

   A global company has a web application deployed in a single cloud region in the US. Users in Asia report high latency. The company wants to improve the experience for these users without moving the application. The network team has measured the baseline latency from Asia to the US region and found it to be 180 ms. They are considering two options: implementing a CDN for static content or deploying a read replica in an Asian region for the database. Which approach would provide the most significant improvement for the dynamic API calls that the application makes?

   • AOptimize the application's TLS handshake by using TLS 1.3 and session resumption.
   • BUse a global load balancer with latency-based routing to send users to the US region.
   • CImplement a CDN to cache the API responses at edge locations.
   • DDeploy a read replica in an Asian region and configure the application to route read queries to the nearest replica.
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   A network administrator needs to generate a high volume of traffic to test for packet loss and measure throughput between two cloud VMs. Which tool is BEST for this purpose?

   • Apathping
   • Biperf
   • Ctraceroute
   • Dnslookup
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5. 9foundation · easy

   How does high latency MOST directly impact a user's experience with a real-time application like a cloud-hosted virtual desktop?

   • AIt prevents the user from connecting to the virtual desktop.
   • BIt reduces the maximum resolution of the display.
   • CIt causes a noticeable delay between user input and the screen updating.
   • DIt increases the amount of bandwidth required for the session.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   A traceroute output shows high latency on the first hop inside the cloud provider's network, but normal latency on all subsequent hops. What does this MOST likely indicate?

   • AThere is packet loss on the internet backbone.
   • BThe issue is on the local network segment between the source and the provider's edge.
   • CThe DNS server is not resolving the hostname correctly.
   • DThe destination server is overloaded.
   Reveal Solution Discussion Select an answer first