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XK0-005 · Question #324

An administrator is trying to optimize a connection to an off-site NFS server. Which of the following commands would BEST display the problems with packet sizes between hops on the network?

The correct answer is A. tracepath. The tracepath command is best suited for diagnosing network issues related to packet sizes between hops, as it actively identifies the maximum transmission unit (MTU) along the network path.

Troubleshooting

Question

An administrator is trying to optimize a connection to an off-site NFS server. Which of the following commands would BEST display the problems with packet sizes between hops on the network?

Options

  • Atracepath
  • Bping
  • Ctracert
  • Dnmap

How the community answered

(25 responses)
  • A
    80% (20)
  • B
    4% (1)
  • C
    12% (3)
  • D
    4% (1)

Why each option

The tracepath command is best suited for diagnosing network issues related to packet sizes between hops, as it actively identifies the maximum transmission unit (MTU) along the network path.

AtracepathCorrect

The tracepath command discovers the path MTU to a destination, which is crucial for identifying packet size problems that can lead to fragmentation and reduced performance, especially for services like NFS. Unlike tracert or traceroute, tracepath actively attempts to determine the MTU for each hop along the route to pinpoint such issues.

Bping

ping only tests connectivity and latency to a single host and does not provide information about packet sizes or MTU along the path.

Ctracert

tracert (or traceroute) shows the path and latency to a destination but does not directly reveal issues with packet sizes or MTU.

Dnmap

nmap is a network scanner used for host discovery and port scanning, not for diagnosing network path MTU or packet size issues.

Concept tested: Network troubleshooting, Path MTU discovery

Source: https://man7.org/linux/man-pages/man8/tracepath.8.html

Topics

#Network troubleshooting#Network commands#Path MTU Discovery#tracepath

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