The statement 'most spyware programs are benign in that they do not perform malicious acts or steal data' is false.
In the field of computer studies, spyware is malicious software that is installed inside a system without the knowledge of the user. Such an act is done either to harm the data in the system or to steal information from the system. Spywares invade the privacy of a user and can lead to harmful results.
Spyware can be a serious threat to internet users as it can even track the login credentials of a user. Hence, spyware is not at all benign as it can impose serious threats to a user. Malicious activities and stealing of data are done through spyware.
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Answer:
Option(c) i.e "A NullPointerException error " is the correct answer for the given question.
Explanation:
Exception are the run time error in the program.A NullPointerException is the runtime error when the pointer containing the NULL value .This type of exception occur when we call that function on the pointer variable which contains the NULL.
- ArrayIndexOutOfBoundsException error occur when we accessing the element which is out of the index or bound so this option is incorrect.
- An ArithmeticException error occur in the arithmetic operation. Suppose a number is divided by zero then the ArithmeticException error is occured .
- ClassCastException error occur in the typecasting of a specific object.So this option is incorrect.
Answer:
True.
Explanation:
OSI network model is a networking framework that has seven layers that describes the encapsulation and communication of devices in a network. The seven OSI model layers are, application, presentation, session, transport, network, data-link and physical layer.
Each layer in this model describes the protocol datagram unit PDU and identifies several standard and proprietary protocols that can be used in a layer.
A network administrator of engineer can decide to use a protocol based on his choice and the brand of network device used.
Answer:
Typecasting, or type conversion, is a method of changing an entity from one data type to another. It is used in computer programming to ensure variables are correctly processed by a function. An example of typecasting is converting an integer to a string.
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They are called the navigation keys
