Answer:
Simply put: A callback is a function that is to be executed after another function has finished executing — hence the name 'call back'. ... Functions that do this are called higher-order functions. Any function that is passed as an argument is called a callback function.
Explanation:
Answer:
B. GRID COMPUTING , ON - DEMAND COMPUTING AND REAL TIME COMPUTING
Explanation:
Grid computing, on-demand computing and real time computing are currently the most impactful information technology processes. The Grid computing from example entails distributed computing whereby computing resources are distributed across different systems for a computing task. This is seen in server systems where a super virtual computer composed of a network of computers are connected to share resources and perform large tasks. This form of computing has majorly affected and improved complex computing tasks today.
On demand and real time computing are also other notable trends in IT with real time computing bringing the power of live and direct coverage of information to our screens and on demand making it possible for the average user to access computing resources as needed such as in the services of cloud computing providers
Answer:
Optional product pricing
Explanation:
<em>Optional product pricing</em> occurs when a product is sold for a much lower price but complementary products or accessories are sold separately to generate profit.
A typical example is in the printer category, printer cartridges are sold separately from the printer when the one in the newly purchased printer runs out. The customer is forced to purchase new cartridges that the company benefits from as profits.
Optional product pricing is a strategy to provide less expensive technology while exploiting the frequent use of accessories to make a substantial profit.