NOS stands for Network operating system. The NOS system is used to manage the network and to provide security for it. It supports the <span>workstations, database sharing, application sharing and file sharing.</span>
<span>These statements describe the NOS.(choose all that applies)
D. gives users access privileges
E. provides an administrator interface</span>
Answer:
False
Explanation:
namespaces can be nested. That is we can have a hierarchy of namespaces.
For examples suppose we have a namespace top. Within this we have another namespace first. At the next level we have a namespace called second. Then we have a class MyClass as a member of this namespace second. Then the complete description of the class will be as follows:
top::first::second::MyClass
Answer:
Phishing is the malicious act of keeping a false website or sending a false e-mail with the intent of masquerading as a trustworthy entity in order to acquire sensitive information such as usernames, passwords, and credit card details.
Therefore, the answer to the question is option C.
Answer:
Method:- This is related to hackers technique and way of accessing to copy other data. It also includes the skill, knowledge, tools and other things with which to be able to pull off the attack.
Opportunity:- this is related to how a user gives way to access to the hackers. It includes the time, the chance, and access to accomplish the attack.
Motive:- This may relate to the hacker to destroy the reputation of another or for money. It is reason to want to perform this attack against this system
Answer:
a) D = 4.88 * 10^(-14) m^2 / s
b) <em>t </em>= 1.1 hr
Solution:
a) Magnesium in Aluminum diffusion:
D = Do * exp(-Qd / RT)
= (1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15)
= 4.88 * 10^(-14) m^2 / s
D = 4.88 * 10^(-14) m^2 / s
b) The composition remains same at say the distance Xo:
(Cx - Co) / (Cs - Co) = Constant
Xo^2 / D_{550} * <em>t </em>= Xo^2 / D_{450} * 15
D_{550} * <em>t </em>= D_{450} * 15
(1.2 * 10^(-4) m^2 / s) * exp ( - 130,000 / 8.31 * 723.15) * <em>t</em>
(4.88 * 10^(-14) m^2 / s) * 15
by, solving for <em>t </em>we get:
<em>t </em>= 1.1 hr
So, the time required is 1.1 hr.
