There are six categories of security services: authenticiation, access control, data confidentiality, data integrity, nonrepudiation, and availability service. First, is authentication service, which defines as the assurance that the communicator is legitimate and is the one that it claims to be. It can either be peer entity or data origin authentication. Second, access control which is to prevent any unauthorized uses of resources. After one is being authenticiated, then this service limit/controls who access? what accessing rights to the resources are allowed depending on the identified individuals. Data confifentiality: the protection of data from unauthorized disclosure. Data integrity: the assurance that data received are exactly as sent by an authorized entity (e.t.c, contain no modificafion, insertion, deletion, or replay).
what's your choices for this question
Answer:
This is an infinite loop.
Explanation:
The while loop while never end since the last statement inside the while loop will continue to decrement the value of num by 1 and the condition num < 9 will always be true.
So either change the condition of the while loop like: num > -9
or start incrementing the variable num in the last statement of the while loop like:
num = num + 1
Note: Don't make both changes at the same time.
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