Interpret Data Flow Through a Server POWEREDGE-FOUNDATIONS-V2 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A PowerEdge server is experiencing slow performance for a workload that reads large files from storage and sends them over the network. The administrator checks the system and finds that the memory bus utilization is at 90%. Which component is most likely the bottleneck?

   • AThe network adapter is not fast enough to send the data.
   • BThe storage controller is not fast enough to read the files.
   • CThe CPU is not fast enough to process the data.
   • DThe memory bus is saturated and cannot transfer data fast enough.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What is the purpose of virtual memory in a PowerEdge server?

   • ATo replace the need for physical RAM
   • BTo extend the apparent amount of main memory using disk space
   • CTo speed up CPU cache access
   • DTo store permanent data for the operating system
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A PowerEdge server is running a virtualized environment with multiple VMs. The administrator wants to reduce CPU overhead for network traffic. The server has a 25 GbE adapter that supports RDMA and SR-IOV. Which configuration will most effectively reduce CPU usage for network I/O?

   • AEnable SR-IOV and assign virtual functions directly to the VMs.
   • BEnable RDMA and configure the adapter to use a single queue.
   • CEnable VLAN tagging and configure the adapter to use a single interrupt.
   • DDisable all offload features and rely on the hypervisor to handle network traffic.
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   Which bus architecture is commonly used in PowerEdge servers to connect high-speed peripherals such as GPUs, NVMe drives, and network adapters to the CPU?

   • AI2C (Inter-Integrated Circuit)
   • BUSB (Universal Serial Bus)
   • CSATA (Serial ATA)
   • DPCIe (Peripheral Component Interconnect Express)
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A PowerEdge server is running a database workload that performs a mix of large sequential reads and small random writes. The administrator notices that the storage subsystem is the bottleneck. The server has a hardware RAID controller with a battery-backed write cache and 12 SAS drives. Which configuration would most likely improve overall performance?

   • ADisable the RAID controller's cache entirely.
   • BEnable Write-Back cache on the RAID controller.
   • CIncrease the number of drives in the RAID array.
   • DEnable Write-Through cache on the RAID controller.
   Reveal Solution Discussion Select an answer first