Question 1

In 2012 IEA chief economist Faith Birol warned that the global temperature warming trend is in line with a temperature increase of 6°C by 2050,which would have devastating impacts on the planet.

Accepted Answer

Faith Birol, then chief economist of the International Energy Agency (IEA), did warn in 2012 that the world was on a trajectory that could lead to a 6°C increase in global temperatures by 2050 if no significant actions were taken to reduce carbon emissions.

Question 2

________ is the method by which data are sent from one device to another via a network.

Accepted Answer

The answer of ________ is the method by which data...

Question 3

Alcatel-Lucent's High Leverage Network (HLN)increases bandwidth and network capabilities while reducing the negative impact on the environment.This works because the HLN delivers increased bandwidth using fewer devices and less energy.

Accepted Answer

The statement accurately describes how Alcatel-Lucent's HLN improves network capabilities and reduces negative environmental impact by delivering increased bandwidth using fewer devices and less energy.

Question 4

The dramatic growth in the number of power data centers,cell towers,base stations,recharge mobiles,and so on is damaging the environment because Radio Frequency Interference (RFI)is overcrowding specific areas of the electromagnetic spectrum.

Accepted Answer

Radio Frequency Interference (RFI) refers to the disruption of electronic devices due to overlapping frequencies, but it does not directly damage the environment. Environmental concerns related to data centers and telecommunications infrastructure are more about energy consumption and resource use.

Question 5

The transmission of digital signals over the Internet by the switches and routers is called _________.

Accepted Answer

The answer of The transmission of digital signals over the...

Question 6

Global warming occurs because of the greenhouse effect,which is the holding of heat within Earth's atmosphere.GHGs such as CO2,methane,and nitrous oxide absorb infrared radiation.

Accepted Answer

Greenhouse gases such as CO2, methane, and nitrous oxide do absorb infrared radiation, which causes the greenhouse effect and ultimately results in global warming.

Question 7

The dramatic growth in the number of power data centers,cell towers,base stations,recharge mobiles,and so on is damaging the environment because of increased energy consumption and related pollution.

Accepted Answer

The statement mentions that the growth in the number of power data centers, cell towers, base stations, recharge mobiles, etc. is damaging the environment due to increased energy consumption and related pollution. Therefore, it is true that this growth is causing environmental damage.

Question 8

_________ involves a dedicated connection between a source and a destination,such as when a voice call is placed between two landline telephones.

Accepted Answer

The answer of _________ involves a dedicated connection between a...

Question 9

Wireless networks and mobile devices tend to be clean technologies with little negative impact on the environment.

Accepted Answer

While wireless networks and mobile devices are generally more energy-efficient and have fewer physical components than traditional technologies, their production and disposal can still have negative environmental impacts. For example, producing smartphones requires the mining of rare earth metals and other resources, while improper disposal of these devices can result in hazardous materials leaching into the environment.

Question 10

A (n)________ provides a standard way for different things,such as software,content,or websites,to talk to each other in a way that they both understand without extensive programming.

Accepted Answer

The answer of A (n)________ provides a standard way for...

Question 11

In terms of environmental impact,global carbon emissions from communications technologies are expected to decrease significantly by 2020.

Accepted Answer

Global carbon emissions from communications technologies have been increasing due to the growing demand for data and connectivity, and there was no significant decrease expected by 2020.

Question 12

The dramatic growth in the number of power data centers,cell towers,base stations,recharge mobiles,and so on is damaging the environment because many of these new technologies have been located in fragile or important natural environments,putting the ecosystem at risk.

Accepted Answer

The answer of The dramatic growth in the number of...

Question 13

Sustainability grows more urgent every year as carbon emissions contribute to climate changes that are threatening quality of life-and possibly life itself.

Accepted Answer

This statement is true. Climate change and carbon emissions are among the biggest threats to sustainability and are growing more urgent each year.

Question 14

A __________ network is one with high capacity or bandwidth.

Accepted Answer

The answer of A __________ network is one with high...

Question 15

Because computers and cell phones are non-polluting,global carbon emissions from communications technologies are expected remain relatively stable between now and 2020.

Accepted Answer

Although computers and cell phones themselves may not pollute, the manufacturing and disposal processes do contribute to carbon emissions. Additionally, as the use of these technologies continues to grow, so does the energy needed to power them, leading to an overall increase in carbon emissions. Therefore, global carbon emissions from communications technologies are expected to increase between now and 2020.

Question 16

Scientists have concluded that increases in CH4 resulting from human activities have thrown Earth's natural methane cycle off balance,increasing global temperatures and changing the planet's climate.

Accepted Answer

The answer of Scientists have concluded that increases in CH4...

Question 17

Every device that communicates with a network must have a unique identifying ________.

Accepted Answer

The answer of Every device that communicates with a network...

Question 18

Network __________ is measured in terms of its throughput,or bandwidth

Accepted Answer

The answer of Network __________ is measured in terms of...

Question 19

While the growth of computer networks and mobile computing has resulted in many benefits to both individual users and organizations,it has also generated a number of negative consequences.One risk is the increase in distracted drivers.

Accepted Answer

The text states that one of the negative consequences of computer networks and mobile computing is the increase in distracted drivers.

Question 20

The main international treaty on climate change is the United Nations Framework Convention on Climate Change (UNFCCC).In 2010 parties to the UNFCCC agreed that future global warming should be limited to below 2°C.

Accepted Answer

The statement is true. In 2010, parties to the UNFCCC agreed to limit future global warming to below 2°C above pre-industrial levels, in order to avoid the worst impacts of climate change. This agreement has since been reaffirmed and expanded upon in subsequent international climate negotiations, such as the Paris Agreement.

Quiz 4: Networks for Efficient Operations and Sustainability