Podcast
Questions and Answers
What is the primary reason for the increase in energy requirements in computing?
What is the primary reason for the increase in energy requirements in computing?
- The growth in Internet-connected devices (correct)
- The increase in mobile phone usage
- The rise of the Internet of Things
- The physical obsolescence of technology
According to the World Bank, what percentage of the world's population possesses a mobile phone?
According to the World Bank, what percentage of the world's population possesses a mobile phone?
- 50% (correct)
- 60%
- 30%
- 40%
By the end of 2013, how many PCs and browser-equipped mobile devices were in use?
By the end of 2013, how many PCs and browser-equipped mobile devices were in use?
- 2.5 billion PCs and 3 billion mobile devices
- 2 billion PCs and 2.2 billion mobile devices
- 1.5 billion PCs and 1.5 billion mobile devices
- 1.78 billion PCs and 1.82 billion mobile devices (correct)
What is the predicted number of Internet-connected devices by 2020?
What is the predicted number of Internet-connected devices by 2020?
What is the primary driver of the growth in Internet-connected devices?
What is the primary driver of the growth in Internet-connected devices?
What is the expected outcome of tablet device sales by 2015?
What is the expected outcome of tablet device sales by 2015?
What is the estimated number of office PCs in use in the United Kingdom in 2012?
What is the estimated number of office PCs in use in the United Kingdom in 2012?
What is the expected percentage of the working population using a PC in their daily work by 2020?
What is the expected percentage of the working population using a PC in their daily work by 2020?
What is the estimated energy requirement for the 'zettabyte Internet' according to Raghavan and Ma (2014)?
What is the estimated energy requirement for the 'zettabyte Internet' according to Raghavan and Ma (2014)?
What is the main concept behind the 'Internet of Things'?
What is the main concept behind the 'Internet of Things'?
What is the primary reason for the increase in energy consumption due to the 'Internet of Things'?
What is the primary reason for the increase in energy consumption due to the 'Internet of Things'?
What is the benefit of devices being able to communicate with each other in the 'Internet of Things'?
What is the benefit of devices being able to communicate with each other in the 'Internet of Things'?
What is the expected outcome of the 'Internet of Things' on the growth in traffic predicted by Cisco?
What is the expected outcome of the 'Internet of Things' on the growth in traffic predicted by Cisco?
What is the main driver of the development and upgrade cycle of consumer electronic products?
What is the main driver of the development and upgrade cycle of consumer electronic products?
What is the consequence of providing devices with Internet capability in the 'Internet of Things'?
What is the consequence of providing devices with Internet capability in the 'Internet of Things'?
What is the expected outcome of the increased connectivity in the 'Internet of Things'?
What is the expected outcome of the increased connectivity in the 'Internet of Things'?
What is the primary challenge in optimizing energy consumption in cloud computing?
What is the primary challenge in optimizing energy consumption in cloud computing?
Which of the following is NOT a focus area of green Information Technology research?
Which of the following is NOT a focus area of green Information Technology research?
What is the concept of the Internet of Things (IoT) primarily concerned with?
What is the concept of the Internet of Things (IoT) primarily concerned with?
Which of the following is an example of a recent European Union regulation related to green IT?
Which of the following is an example of a recent European Union regulation related to green IT?
What is energy harvesting, in the context of green IT, concerned with?
What is energy harvesting, in the context of green IT, concerned with?
What is the primary limitation of cloud computing in terms of energy efficiency?
What is the primary limitation of cloud computing in terms of energy efficiency?
Which of the following is a challenge facing green IT system developers and providers?
Which of the following is a challenge facing green IT system developers and providers?
What is a major concern in the field of green IT, without a reliable methodology to measure ICT suitability?
What is a major concern in the field of green IT, without a reliable methodology to measure ICT suitability?
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Study Notes
Energy Consumption of the Internet
- An estimate by Raghavan and Ma (2014) suggests that the energy consumption of the internet is 8 kWh/GB, which is significantly higher than previous estimates.
- This estimate takes into account the full life cycle of devices and end devices, which are excluded from other estimates.
Internet of Things (IoT)
- The IoT concept enables almost any object to possess internet capability.
- Examples of IoT include washing machines that can optimize energy use and in-vehicle systems that provide fuel-efficient routes.
- Each device effectively becomes a computer in its own right, requiring more IT and energy for operation.
Growth in Internet-Connected Devices
- 50% of the world's population possesses a mobile phone (World Bank, 2014).
- By the end of 2013, there were 1.78 billion PCs and 1.82 billion mobile devices in use (Gartner, 2013).
- By 2020, there are predicted to be 50 billion internet-connected devices.
Challenges in Green Information Technology
- One of the critical challenges facing green IT is the lack of a reliable methodology to measure its suitability.
- The legal framework for green IT is still underdeveloped, with limited regulations on the national or international level.
Cloud Computing and Energy Consumption
- Cloud computing is not necessarily a "green way" of reducing energy consumption, as a typical cloud data center still consumes an enormous amount of energy.
- It is difficult to precisely identify areas of energy optimization in cloud computing due to its distributed nature.
Energy Harvesting and Internet of Things
- Energy harvesting is a research area that explores how to take advantage of ambient power sources.
- The concept of the internet of things examines technologies that enable machine-to-machine communication and machine-to-human interaction via internet protocols.
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