A security analyst is trying to identify anomalies on the network routing. Which of the following functions can the analyst use on a shell script to achieve the objective most accurately?

Question

Options

• Afunction x() { info=$(geoiplookup $1) && echo "$1 | $info" }
• Bfunction x() { info=$(ping -c 1 $1 | awk -F "/" 'END{print $5}') && echo "$1 | $info" }
• Cfunction x() { info=$(dig $(dig -x $1 | grep PTR | tail -n 1 | awk -F ".in-addr" '{print $1}
• Dfunction x() { info=$(traceroute -m 40 $1 | awk 'END{print $1}') && echo "$1 | $info" }

• A
  11% (6)
• B
  4% (2)
• C
  4% (2)
• D
  81% (44)

Explanation

This shell function uses traceroute to trace the route packets take to reach the destination specified by $1. The -m 40 option specifies a maximum of 40 hops for the trace. The awk 'END{print $1}' part extracts the final hop from the traceroute output, and then the function echoes the destination and the info.

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