Performance Problems CNX-001 Practice Questions (Page 5)

Questions 21–25

1. 21foundation · easy

   What is the PRIMARY goal of performing a network path analysis?

   • ATo check the security rules on the destination server's firewall
   • BTo determine the total bandwidth capacity of the connection
   • CTo verify the DNS resolution of the destination hostname
   • DTo identify the specific router or link responsible for latency or packet loss
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2. 22application · medium

   A network administrator is troubleshooting a performance issue between two cloud VNets connected via a peered connection. Users report that file transfers are slow and sometimes time out. The administrator runs a continuous ping from a VM in VNet A to a VM in VNet B and observes that about 5% of packets are lost, but the latency of the successful replies is consistently low. Which tool should the administrator use next to isolate where the packet loss is occurring?

   • AMTR (My Traceroute)
   • BPacket sniffer on the source VM
   • CBandwidth test tool
   • DNetFlow analyzer
   Reveal Solution Discussion Select an answer first
4. 23foundation · easy

   Which command-line tool is commonly used to measure the round-trip time (RTT) between a source and a destination host?

   • Anslookup
   • Bnetstat
   • Cping
   • Dtraceroute
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5. 24expert · hard

   A cloud architect is designing a multi-region application and needs to measure the network latency between two regions to decide on the primary and failover regions. The architect has access to the cloud provider's internal measurement tools and also to third-party tools. The architect wants to measure the latency as it would be experienced by the application, which uses TCP. Which measurement approach would provide the most accurate representation of the application's network latency?

   • AUse the cloud provider's internal latency measurement tool that uses a proprietary protocol.
   • BUse a TCP-based measurement tool that measures the round-trip time of a TCP handshake and data transfer.
   • CUse a UDP-based measurement tool to measure the raw network latency.
   • DUse ICMP ping to measure the round-trip time between the two regions.
   Reveal Solution Discussion Select an answer first
6. 25expert · hard

   A company runs a stateful application on a fleet of virtual machines behind a cloud load balancer. The application stores session data locally on each VM. The load balancer is configured with source IP affinity to ensure session persistence. The operations team is planning to scale the application by adding more VMs. However, they are concerned that the source IP affinity will not distribute traffic evenly, especially for users behind a large NAT gateway. What is the best solution to maintain session persistence while improving load distribution?

   • AKeep source IP affinity but increase the number of VMs.
   • BSwitch to round-robin and rely on the application to handle session loss.
   • CMove session state to a shared external cache, such as Redis, and switch the load balancer to least connections.
   • DUse cookie-based persistence instead of source IP affinity.
   Reveal Solution Discussion Select an answer first