Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

A Linux administrator is investigating very slow file transfers and thousands of CRC errors on interface enp2s0 of a file server. The connected switch port is manually configured to 100 Mb/s full-duplex with auto-negotiation disabled. Relevant output from the server is:

# ethtool enp2s0
Speed: 100Mb/s
Duplex: Half
Auto-negotiation: on
RX errors: 3421  TX errors: 0  Collisions: 839

Which change will most likely eliminate the errors and restore normal throughput without replacing any hardware?

  • Disable Ethernet flow-control (pause frames) on both ends of the link

  • Increase the MTU on the server to 9000 bytes (jumbo frames)

  • Enable auto-negotiation on the switch port so both ends negotiate 100 Mb/s full-duplex

  • Force the server interface to 10 Mb/s half-duplex

CompTIA Linux+ XK0-006 (V8)
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