Jorge is reviewing the firewall logs and sees 28 echo requests leaving the network and ICMP echo replies coming back over the course of a five-minute period. Which of the following is most likely the cause of this traffic?
A) Users are streaming multimedia from a popular video-sharing website.
B) This is standard voice-over-IP traffic and is no cause for concern.
C) These are authentication requests for single sign-on using federation with large websites.
D) Someone has run multiple ping tests from the network to an outside address.

Question

Quizplus · Accepted Answer

Echo requests and replies are characteristic of ping tests, which are used to check the connectivity and latency between two network points. This is not typical behavior for multimedia streaming, VoIP traffic, or authentication processes.

Jorge Is Reviewing the Firewall Logs and Sees 28 Echo