Answer: The SFD is the eight-bit (one-byte) value that marks the end of the preamble, which is the first field of an Ethernet packet, and indicates the beginning of the Ethernet frame.
Answer and explanation:
An ".action" file is a file written in Xcode and used by the <u>Automator</u> program, whose function is to create automations in macOS. Action files contains specific actions that can be combined with other actions to create an automated process.
This type of file is used to automate tasks in <u>macOS</u>, usually with Finder (file manager) or another program.
Action files are especially useful for repetitive tasks, such as creating sequential batch folders, editing images, or deleting files.
Answer:
A generalized class used only to create related derived classes
Explanation:
An abstract class is a class which cannot be instantiated on its own. It is defined using an abstract keyword. However, an abstract class can be inherited from and the derived class can actually be instantiated. For example:
abstract class A{
}
class B extends A{
void test(){
}
}
Here class A is an abstract class, while class B inherits from A. Now we can create an instance of class B as follows:
B b = new B();
b.test();
Answer:
knowledge acquisition facility
Explanation:
In the context of the components of a typical expert system, Knowledge acquisition facility is defined as that component of an expert system that is responsible for providing an effective and efficient medium for collecting and incorporating relevant information such as data, new rules, relationships and facts used by the expert system.
