To prevent intrusions, companies install combinations of hardware and software systems called firewalls. Firewalls help keep unauthorized web users from tapping into private corporate data.
Explanation
Firewalls have been used so much in the corporate world, they have become part and parcel in our lives. They can be defined as hardware or software system components designed to solely limit or prevent access deemed malicious and illegal from internal or external devices. Hackers have honed their skills and can often gain access to corporate systems and servers quickly. Without firewalls, these hackers may infiltrate your entire network and launch an attack.
All traffic coming in and leaving the network is monitored by a firewall and permits what it thinks is clean and blocks what it thinks is malicious. It acts as a barrier between you and the external network (usually the internet).
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Answer:
online research and fun game and interaction wht other people
Select the part you want to move. Highlight it, and click ctrl+x. Then, go to the place you want to put it. Click ctrl+v. It should be cut and pasted
Answer: (A) Only unique
Explanation:
Enumeration basically contain only unique value as enumeration is define as the set of the numeric values that is finite and it is represent specifically by the identifiers which is known as the enumeration constant.
It only work with the finite values and also hide all the un-relevant and unnecessary information from the programmers. Enumeration is the type of the data type variable which contain only previous declared values.
Ambiguous is not a type of nested class.
c. ambiguous
<u>Explanation:</u>
In computer programming languages class method or programming is used. Class or object is used in c++ or java.
But java has not having pointer so it has limitation of using class.
Inner class: - it is also as nested class where declared in inside the class to interface with other class.
Local: - it is local class declare to use inside the function or procedure
Ambiguous:- it is error on nested class
Anonymous: - it is class without proper declarations.