Which of the following is not a key characteristic of Ubiquitous computing System ?Select one:a.Distributedb.iHCIc.Context-Awarenessd.Pay as you go

To determine which of the options is not a key characteristic of Ubiquitous computing System, we need to analyze each option.

a. Distributed: Distributed computing is a key characteristic of Ubiquitous computing System. It refers to the distribution of computing resources across multiple devices or locations.

b. iHCI: iHCI stands for intelligent Human-Computer Interaction, which is also a key characteristic of Ubiquitous computing System. It involves the use of advanced technologies to enable seamless and intuitive interaction between humans and computers.

c. Context-Awareness: Context-awareness is another key characteristic of Ubiquitous computing System. It refers to the ability of the system to understand and respond to the context in which it is being used, such as the user's location, preferences, and activities.

d. Pay as you go: Pay as you go is not typically considered a key characteristic of Ubiquitous computing System. It is more commonly associated with payment models, where users pay for services or resources based on their usage.

Therefore, the correct answer is d. Pay as you go.