CompTIA Linux+ XK0-006 (V8) Practice Question

While investigating intermittent throughput problems on a Linux file-server, you run the following command during a period of heavy traffic:

# ethtool -S eno1 | grep -i drop
rx_queue_0_drops: 18342
rx_queue_1_drops: 19211

CPU utilization is low and no physical-layer errors are reported by ip -s link. Which NIC-level adjustment is most likely to reduce these packet drops without adding new hardware?

  • Lower the interface MTU to 576 bytes.

  • Disable Generic Receive Offload (GRO) on the adapter.

  • Decrease the interface transmit queue length to 100 packets.

  • Increase the RX and TX ring buffer sizes with ethtool -G.

CompTIA Linux+ XK0-006 (V8)
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