Which of the following DNS records could be a glue record?

Which of the following DNS records could be a glue record?
A . ns1.labA198.51.100.53
B . labNS198.51.100.53
C . ns1.labNS198.51.100.53
D . ns1.A198.51.100.53
E . ns1.labGLUE198.51.100.53

View Answer

Answer: A