Which statement about the IP SLAs ICMP Echo operation is true?
A. It is configured in enable mode.
B. It is used to determine the one-way delay between devices.
C. It is used to identify the best source interface from which to send traffic to a destination.
D. The frequency of the operation is specified in milliseconds.
B is wrong ! ICMP Echo is a 2-way process : https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mt-book/sla_icmp_echo.html
“The ICMP Echo operation measures end-to-end response time between a Cisco router and any devices using IP. Response time is computed by measuring the time taken between sending an ICMP Echo request message to the destination and receiving an ICMP Echo reply”
A is wrong, it is configured under “configure terminal”.
D is wrong, frequency is set in Seconds.
It leaves only C, which is kind of not wrong….