Please answer as soon as possible Show your steps for a good rate Please answer
ID: 3042288 • Letter: P
Question
Please answer as soon as possible
Show your steps for a good rate Please answer as soon as possible
Show your steps for a good rate
3. A computer network security company stores data collected in connection with network "events" for potential later analysis. During one operational period, they logged four different types of events (EV = eavesdropping, IS-identity spoofing, DOS-denial 1man in the middle attacks) occurring in three time periods (D-dayshift, A = afternoon shift, and N = night shift). The actual numbers of such events were
Explanation / Answer
from abve:
a)
P(N) =115/492= 0.2337
b)P(IS and MIM) =0 (As these are mutually exclusive events)
c) P(MIM or DOS) =(174+67)/492 =0.4898
d)P(Ac) =1-P(A) =1-(261/492)=0.4695
e) P(MIM or D) =(67+116-34)/492=0.3028
f) P(Dc or EVc) =1-P(D n EV) =1-26/492=0.9472
EV IS DOS MIM total D 26 5 51 34 116 A 115 30 104 12 261 N 32 43 19 21 115 total 173 78 174 67 492