18- Specific security challenges that threaten corporate servers in a client/server environment include:
a. tapping; sniffing; message alteration; radiation.
b. hacking; vandalism; denial of service attacks.
c. theft, copying, alteration of data; hardware or software failure.
d. unauthorized access; errors; spyware.
هذا السؤال جيرل حاطه جوابه b وشفت بالحلول حقة الامبراطور حاطها a
وش الصح ؟؟