ISC Exam Questions

If you the text listed below at the beginning or end of an email message, what would it be anindicat

If you the text listed below at the beginning or end of an email message, what would it be anindication of?
mQGiBDfJY1ERBADd1lBX8WlbSHj2uDt6YbMVl4Da3O1yG0exQnEwU3sKQARzspNB zB2BF+ngFiy1+RSfDjfbpwz6vLHo6zQZkT2vKOfDu1e4/LqiuOLpd/6rOrmH/Mvk

A.
A virus

B.
A worm

C.
A PGP Signed message

D.
A software error