True/False Questions: Please circle the correct answer 1. Security concern incre

Question

True/False Questions: Please circle the correct answer 1. Security concern increase when wireless communication medium is used as part of the communication network 2. ISOs are organizations responsible for managing power flow over transmission lines 3. Voltages in the range of 4.16 kV is classified as high voltage 4. Denial-of-service defense is a way to solve traffic attacks 5. Demand side management is referring to increase or decrease in power generation to address customer needs 6. Peak shaving refers to reducing power consumption during hours on peak demand 7. Zigbee is a good choice for application requiring high data rates 8. Power line communication can be used only over transmission lines 9. Phasor Measurement Units (PMUs) are providing accurate real-time measurement of end-users power use 10. Steam turbines have long start and stop times

Explanation / Answer

1. Yes, T

In wireless communication security threats are imminent due to the open nature of communication.

   Two main issues: authentication and privacy

   Other serious issues: denial-of-service

2. No, F

ISO is an independent, non-governmental international organization with a membership of 163 national standards bodies. Through its members, it brings together experts to share knowledge and develop voluntary, consensus-based, market relevant International Standards that support innovation and provide solutions to global challenges.

3. No

IEEE (Institution of Electrical and Electronic Engineers) Std. 100 defines nominal medium voltage (MV) as “greater than 1 kV and less than 100 kV.” Moreover, this is followed by two still higher class designations—high voltage (HV) ranging to 230 kV and extra high voltage (EHV) above that point.

4. Yes, T

Denial of Service (DoS) attacks against web sites occur when an attacker attempts to make the web server, or servers, unavailable to serve up the web sites they host to legitimate visitors. For some time, it was thought that these types of attacks were generally used against large corporations, government sites, and activist sites as a form of protest to disrupt their web presence.

5. Yes, T

Demand-side management (DSM )has been traditionaly seen as a means of reducing peak electricity demand so that utilities can delay building further capacity. In fact, by reducing the overall load on an electricity network, DSM has various beneficial effects, including mitigating electrical system emergencies, reducing the number of blackouts and increasing system reliability. Possible benefits can also include reducing dependency on expensive imports of fuel, reducing energy prices, and reducing harmful emissions to the environment. Finally, DSM has a major role to play in deferring high investments in generation, transmission and distribution networks. Thus DSM applied to electricity systems provides significant economic, reliability and environmental benefits.

6. Yes, T

Peak shaving is a technique that is used to reduce electrical power consumption during periods of maximum demand on the power utility.

7. No, F

ZigBee is a wireless networking standard that is aimed at remote control and sensor applications which is suitable for operation in harsh radio environments and in isolated locations. It is used for low data rates.

8. No, F

Power-line communication (PLC) is a communication method that uses electrical wiring to simultaneously carry both data, and electric power. It is also known as power-line carrier, power-line digital subscriber line (PDSL), mains communication, power-line telecommunications, or power-line networking (PLN).

9. Yes, T

A phasor measurement unit (PMU) is a device which measures the electrical waves on an electricity grid using a common time source for synchronization. Time synchronization allows synchronized real-time measurements of multiple remote measurement points on the grid.

10. Yes , T

It has long start and stop times

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