What utility can be used to locate a black hole router?
A)NSLOOKUP
B)ICMP Echo Request
C)Dig
D)Tracert

Question

Quizplus · Accepted Answer

The TCP/IP utility "ICMP Echo request," also called Ping, can be used to locate a black hole router.
Key Takeaway: When the MTU, or maximum transmission unit, is larger than the maximum packet size of the receiving router, and the receiving router does not send a destination unreachable response, several different problems can occur depending on the application sending the request. This can cause packets to be lost, resulting in what is commonly described as a "black hole" router. As the Ping utility can be configured with alternate parameters such as a different buffer size and the "don't fragment" syntax, this makes it the perfect utility to troubleshoot why packets are not arriving at their destination, therefore locating the black hole router.

What Utility Can Be Used to Locate a Black Hole