If a client initiates the SMTP communication using an EHLO (Extended Hello) command instead of the HELO command some additional SMTP commands are often available. They are often referred to as Extended SMTP (ESMTP) commands or SMTP service extensions. Every server can have its own set of extended SMTP commands.
Answer:
Umm what? Are you talking about the type of problem it is? If so it is an optimization problem.
Explanation:
I had something like this for one of my tests and I chose the optimization problem because it finds the values of decision variables that result in a maximum or minimum of a function.
But ion know if it's this that you are talking about
<span>GIF stands for Graphics Interchange Format</span> which was released by CompuServe in 1987. The Graphics in GIF is why some people argue against it's originally intended pronunciation as "jif" (like the peanut butter)
Answer:
Downcasting
Explanation:
Downcasting is a way of determining whether a given object is of a particular subclass type. In object-oriented programming downcasting is used to cast an object to a subtype. Even though sometimes it throws a compile-time error in Java, downcasting can be done on languages like Java, C++, C#. The opposite of downcasting is upcasting, which is simply the casting of an object to supertype or parent type.
