IS 130 Chapters 8 and 9

Which IEEE standard supports a "multimedia office"?

802.11ad

Bob Thrift lives in an affluent neighborhood and is looking to redo the Internet in his house. Bob has a wife, three teenage daughters, and a video-game-playing son who all need on-demand video and Internet access on their tablets, phones, laptops, and gaming consoles for both work and school. If Bob hired you to install his home Internet network, which would you recommend, and why?

An 802.11ac wireless network because it supports bandwidth of up to 1.3 Gbps and is designed for the wireless, multimedia home

What happens if one sensor in a wireless sensor system fails to pick up data?

Another sensor picks up its data.

Marina would like to watch movies streamed from her laptop onto her SmartTV. Which of the following wireless networking technologies would be BEST for this application?

Bluetooth

Gary and Terri are watching the big game on their television; it is being broadcast via their satellite television provider. Which of the following is the type of satellite that is broadcasting the game to their receiver?

GEO

Which technology allows users to be located when placing a wireless 911 call?

GPS

You are working with a local Detroit car radio store on inventory control problems it is experiencing. Lately, high-end stereo equipment has come up missing, and the owner wants to start locating his stolen merchandise. The owner stated that he had "heard there was some kind of wireless or Internet type of thing" he could use to track his stolen inventory. What would be the BEST solution for his problem, and why?

He is likely referring to radio frequency identification which is a component of the Internet of Things. Although passive RFID is less expensive, active RFID would help his search because it transmits its own signal and can be detected at greater distances.

Jennifer is working at her local library accessing the Internet through a wireless access point intended only for the patrons within the library. Which of the following is she likely using?

Hotspot

Jillian lives in a rural community and does not have access to cable or wireline Internet. She does some research and decides to purchase IoS for her home. What is she MOST LIKELY to experience?

Internet access that has significant propagation delays and does not work during storms

The Cooper Foundation would like to launch satellites. Its priority is launching inexpensive satellites with low-power transmitters. It is less concerned about orbital life. Which of the following should it put into orbit?

LEO constellation

footprint results from a satellite being higher in orbit.

Large

What will MOST LIKELY happen if a network of wireless sensors receives much more data than it can transmit efficiently over the current bandwidth?

Operators will place more sensors only where they are required.

If Rhonda decides to install a satellite radio receiver in her car to replace the factory radio, what is the MOST LIKELY result?

She will have a high-quality signal broadcast directly to her car that does not fade into static as she gets farther from the signal sourc

If Clarise uses radio wave transmissions to connect her office computers to a local area network, what is the MOST LIKELY result?

The radio transmitter will be inexpensive and easy to install. The transmissions will travel at high speeds and easily travel through walls. There will be the potential for electrical interference problems, however, and the transmissions will be susceptible to snooping.

How do wireless sensors work?

They collect data from many points over an extended space.

What is the relationship between m-commerce and bandwidth improvement?

To properly conduct m-commerce, you need sufficient bandwidth for transmitting text, voice, video, and multimedia. Wi-Fi, 4G cellular technology, and WiMAX all provide the necessary bandwidth.

deliver functionality as services rather than packaged software

Web services

What type of items might users tag as "red," "stick-shift"?

car

Jessica is able to use her cell phone's flashlight feature while simultaneously streaming an online radio station. This is an example of

dematerialization

Which could be used by a hacker to detect a wireless network?

hotspotter

Wirless sensors

is/are the underlying technology of the IoT.

What is the MOST LIKELY result if a wireless sensor activates for a fraction of a second and transmits data to another sensor, which then transmits to another sensor, which then fails?

Another sensor will pick up and transmit the data.

You have been asked to give a presentation on current and emerging technologies for wide-area wireless networks to potential investors in a telecommunications fund. Which of the following points would be BEST to include in your presentation

4G networks currently in use reach up to 100 Mbps for commuters and 1 Gbps for pedestrians. 5G networks are expected to be deployed by 2020 and are to be more intelligent networks. WiMAX, to help rural areas, will have a range of 31 miles and data transfer rates of up to 75 Mbps

Sally manages a small shopping center with a cafe, a coffee shop, an art gallery, and a boutique. The center is marketed as a high tech shopping experience. Sally wants to make high quality Internet accessible to customers and business owners at all times. Which Internet network should she install, and why?

802.11 ad because it supports wireless bandwidth up to 7 Gbps and is targeted to the "wireless office"

Fred provides part-time accounting services from his home office. He primarily uses the Internet for e-mail and for a connection to his wireless printer. What IEEE standard would be BEST suited to his needs at the lowest cost?

802.11ad supports a "wireless office".

Which satellite would you choose if your company wanted to avoid transmission delays but ensure an orbital life of at least six years? Why?

A MEO satellite because it has negligible transmission delays and an orbital life of 6-12 years

Compare MEO and GEO satellites.

A MEO satellite's footprint is smaller than a GEO satellite's; however, MEO satellites are cheaper to launch and do not have propagation delays like GEO satellites.

What is the difference between Super Wi-Fi and WiMAX

Both can create long-distance wireless Internet signals; however, Super Wi-Fi is a medium-range wireless network, while WiMAX is a wide-area wireless network.

What is the difference between Super Wi-Fi and WiMAX?

Both can create long-distance wireless Internet signals; however, Super Wi-Fi is a medium-range wireless network, while WiMAX is a wide-area wireless network.

Which of the following represents the BEST comparison between MEO and LEO satellites?

Both have negligible transmission delays. A LEO satellite is less expensive to build and launch than a MEO satellite. A moderate number of MEO satellites are needed for global coverage, while a large number of LEO satellites are needed. A MEO satellite requires a medium-power transmitter, while a LEO satellite requires a low-power transmitter. Both move relative to a point on the earth, but LEO satellites move more rapidly. MEO satellites have a longer orbital life.

Compare satellite and microwave transmission system

Both must have an unobstructed line of sight. Satellite transmissions are more expensive and experience propagation delays. Satellites use broadcast transmission, while microwave uses line of sight

Compare microwave and satellite transmission systems

Both transmit data via line of sight; however, satellite transmissions have a larger footprint than microwave transmissions.

You are speaking to a group of small-and middle-sized bank executives on the emergence and future of banking by phone, along with other mobile devices. In creating an outline for the executives, you want to list some factors for the rapid development of mobile commerce. Which of the following would be MOST appropriate to include as factors in your outline?

Declining prices of wireless devices, bandwidth improvement for mobile commerce, and widespread availability of mobile devices

You are a communications technology specialist advising a military contractor that requires GPS technology for its employees in the field even in extremely remote areas where lives could depend on it. The company is also interested in setting up temporary headquarters with wireless technology where no field employee is able to remotely access confidential information but can communicate to the headquarters in the U.S. The company is also interested in ensuring that its employees do not copy and share confidential information using their cell phones or other wireless technology. It wants to provide radio for entertainment purposes for its employees in the field and at temporary headquarters. What kinds of technology do you recommend?

GPS can track one's position within 6 feet anywhere on the earth and is therefore reliable even in the most remote locations; radio transmissions are not a good option because they can be intercepted by someone with similar equipment. Microwave transmissions do not cover a large area and must have line-of-sight transmission which makes long-distance communication impractical. Satellite technology also requires line-of-sight transmission, but it is the best option because it offers a large footprint that allows for long-distance communication. Satellite transmissions are also sent to many receivers at one time which facilitates long-distance communication. The company should consider jamming technology to ensure that employees are not able to use camera phones or other wireless technology to even inadvertently transmit confidential information.

Alice has a successful, up-to-date LinkedIn profile and does a lot of networking. She also has some contact with headhunters. What more could she do to make her job search more effective?

Go on big job sites with advanced search options and use filters to search for suitable jobs.

Bob has purchased new cell phones for the employees in his busy urban office. He switched from an LTE to an XLTE network. What can he expect?

He can expect less congestion when too many people in one area are using an LTE network. XLTE maintains high bandwidth for users when LTE networks are highly congested

Jonas is currently employed but is open to getting a new job. He currently has a job that pays $100,000 and utilizes his highly-specialized skills. Which of the following would you recommend to Jonas?

He should update his LinkedIn profile to reflect his current position. He should use his current employee photograph. He should also write a thoughtful summary and include past volunteer work. He should make sure to block his boss by using privacy settings.

Rory has an Internet connection that is frequently disrupted during thunderstorms, but it is the only connection available in his mountain community. What type of connection does he probably have?

Ios

How does wireless technology help to improve vaccine supply chains?

It can be used to prevent unnecessary stockouts and ensure that vaccines are available when children are brought into clinics to be immunized.

If Jonathan, a doctor with Doctors Without Borders, is working in the field in the Republic of Congo, how is wireless technology MOST LIKELY to help him?

It can give him access to health records and schedule appointments with his patients

Mike McMasters is speaking to a small focus group on short-range wireless networks and the security issues surrounding them. As he is speaking, he states that ultra-wide band can utilize the PLUS Real-Time Location System to track multiple people and assets. He also states that waving a Bluetooth badge, which is a form of near-field communication, will allow entry and tracking of employees as they come and go as well. Evaluate his comments

Mike is correct in his description of PLUS; however, Bluetooth is not a form of near-field communication that incorporates imbedded devices on phones and cards.

Atmos Industries was able to launch a number of satellites inexpensively with only negligible transmission delays when the satellites are in service. The company has found itself having to replace most of the satellites after only five years, however. What is the MOST LIKELY cause of this?

It is using an LEO satellite. LEO satellites are the least expensive to build and launch, and they experience only negligible transmission delays; however, they have an orbital life that is as little as five years.

Keiko is a business major who has come to you in order to research threats to wireless networks that can impact businesses and consumers. She says that she is familiar with war driving and describes it as the act of locating WLANs while driving around a city or elsewhere. She has heard of rogue access points and believes that they are usually set up inadvertently because of a lack of internal communication in a company. How would you BEST evaluate and complete her information?

Keiko is correct about war driving. However, her information about rogue access points is incomplete. Rogue access points can sometimes be the result of an intentional malicious attack known as an evil twin attack. Keiko needs to be informed about eavesdropping, an attempt by unauthorized users to access data that are traveling over wireless networks, and radio frequency jamming, a person or a device that intentionally or unintentionally interferes with your wireless network transmissions.

Craig is using a satellite telephone to communicate during an emergency. Which of the following type of satellite is transmitting his call?

LEO

If a company has placed a large number of satellites in orbit and claims to have coverage of even the polar regions, what type of satellites is it likely to be using?

LEO

Steve is planning a hike along the entire Appalachian Trail. Because this hike typically takes months to accomplish, he decides to purchase a satellite phone. Which type of satellite should he confirm his phone connects to if he does not have packing space for a large number of spare batteries and nowhere to recharge them?

LEO

Argonium Inc. would like to be able to launch satellites that are relatively inexpensive and able to pick up weak signals. Which of the following should it put in orbit

LEO constellation

Compare LEO satellites and GEO satellites with respect to orbits.

LEO satellites move with respect to a point on the earth's surface and must be tracked by receivers, while GEO satellites remain at a fixed point above the earth's surface and do not need to be tracked by receivers.

A company's stock prices are rising based on its claim that it has launched satellites that will provide low-cost, real-time, high-resolution images of any spot on the globe at any time of day. It claims to have assured the United Nations that this does not represent a threat to the security of any nation and that these satellites will be marketed primarily to municipal governments across the globe for spotting traffic, zoning, and code violations. The company does not anticipate government interference with its plans. Which of the following represents the BEST response to the company's claims?

Low-cost satellites that provide high resolution images in real time are available. These could represent a threat to U.S. national security, however, and the U.S. has the ability to disrupt the service. It is feasible that satellites such as those described by the company could use satellite images to extract data that is detailed enough to enforce local traffic, zoning, and code regulations.

Leah wants her friend to be able to play an online multiplayer game with her using their cell phones, but her friend has no data left on her plan, and the nearest Wi-Fi network is password protected. Which of the following would help fix this problem and allow the girls to play their game?

MiFi

Leonard is presenting technology options to the local animal shelter. He suggests NFC as a way of providing staff with badges for entry into secure areas and a Bluetooth cell phone app as a way of tracking animals that are lost. The shelter occasionally has to cope with emergencies because of animal illness or behavior, and it needs to locate staff immediately within the large shelter complex. Leonard suggests UWB as a means of doing this. Evaluate his suggestions.

NFC has the smallest range of communication and would be good for devices such as entry badges that are close to the device with which they are communicating. Bluetooth, however, is a short-range wireless technology that operates within 100 meters of the device with which it is communicating; it would not be appropriate for tracking lost animals. UWB is commonly used for obtaining real-time locations.

Mike DeBlane is speaking at dinner with a few wealthy application-developers-turned-business-owners and is discussing the current and future trends of mobile commerce. He states that although remote applications such as banking by phone and shopping by phone have all the publicity, there is an untapped market where mobile devices have not been used within the firm for logistics and workflows. Would you agree with his comments? Why or why not?

No. Although public-facing mobile applications command most of the publicity, most mobile applications are used within the firm to assist in workflows and intra-firm communications.

You are at a convention for grocers and food shippers. You come upon a booth set up by a company that tracks grocers' inventories with QR codes. This company is encouraging the industry to shift to QR codes from bar codes normally found on everyday products. Its flier states that QR codes hold distinct advantages over UPC in that they store much more information, can be read from any direction or angle, are more resistant to damage, but are larger because they store information both horizontally and vertically. Is the company's marketing material accurate? Why or why not?

No. Although the material is correct about every other statement, QR codes are actually smaller because they store information both horizontally and vertically.

Dark Zero is trying to provide free Internet to citizens of an oppressed city that censors the Internet greatly. This group has hired a consultant to advise them of the wireless transmission channel they should use to broadcast that signal. Though poorly-funded, this group is effective during civil strife situations and requires communications to underground groups who must remain well-hidden. The consultant suggested that they use microwave transmission because of its high bandwidth and because it is inexpensive. He also advised against using satellite communications due to its expensive nature. Would you agree with the consultant? Why or why not?

No. Microwave transmission requires unobstructed line of sight and is susceptible to interference. Radio would be a better choice because it is inexpensive and penetrates walls

You and a competitor are advising a high-end jewelry chain on electronic means of inventory tracking. The chain has traditionally used bar codes, but it finds that it is having trouble keeping in-demand items in stock. This is particularly prevalent for expensive items that are usually only available in small quantities in each store. Because of this, the company is not able to pay as much attention as it would like to customer service. The company's top priority is finding the most efficient method of tracking inventory to free up its salespeople for customer interaction. Your competitor recommends QR codes because they store much more information than bar codes and can be read from any angle. The competitor claims that QR codes are the MOST efficient method of inventory tracking available. Did your competitor correctly and completely cover all options? Why or why not?

No. The information the competitor gave about QR codes is correct, but he failed to mention that they are also less likely than bar codes to be misread and are less susceptible to damage. He also failed to mention the option of RFID systems. While RFID is more expensive than bar codes or QR codes, RFID applications make them very efficient in retail settings. The store has a choice between active tags (more expensive) and passive tags (less expensive).

After Laura gets home with her new book, she notices a small square item wedged between two pages. Upon closer inspection, the square looks like a small microchip. Laura has likely found a(n)

RFID

Which of the following represents a program that would help recruiters at a newly-public firm recruit people to their multiple new divisions?

Post positions such as delivery drivers on job boards and positions such as analysts on LinkedIn on a large scale using HR social media management software while recruiting C-level positions on a face-to-face basis.

Jane is the VP in charge of security at an electronics manufacturer. After items were lost en route from factories in two different cities, she implemented a supply chain management system that triggers automatic security alerts if a container is opened unexpectedly. This has failed to solve the problem. Which of the following represents the BEST advice you can give Jane on the next step in inventory management available to her?

Radio frequency identification would allow the company to tag and track individual items even over great distances. Although passive RFID is less expensive, active RFID would help her search because it transmits its own signal and can be detected at greater distances.

You are an up-and-coming security analyst and are giving your first presentation at Flip Side, a locally-sponsored security conference. You have to give a 10-minute presentation on the major threats to wireless networks. Which of the following should you include in your presentation

Rogue access points - unauthorized access points to a network; Eavesdropping - unauthorized users accessing data over Wi-Fi; RF jamming - interference, intentional or not, with the signals of wireless devices; and War driving - the act of locating WLANs while walking or driving.

Compare satellite radio transmission with traditional radio transmission

Satellite radio offers uninterrupted, high-quality transmission that is beamed to a location from space. Radio transmissions can only travel 30-40 miles and can experience interruptions.

You are speaking with the management of an agency that maintains group homes for adults with disabilities. The agency is in the process of developing several Innovative Homes with the intention of increasing the independence of residents, reducing staff, providing greater monitoring of residents' medical conditions and fitness, maintaining the accessible vans that serve each home, and ensuring that homes are as energy efficient as possible. What applications of the Internet of Things do you propose to this agency for its Innovative Homes?

Smart Homes are homes where appliances can be turned off remotely and alerts of maintenance needs sent. Thermostats and lights can also be remotely monitored. Sensors in energy-using devices can communicate directly with the utility company so that energy and power generation can be balanced. Residents with non-life-threatening medical conditions can wear sensors to monitor those conditions, and all residents can wear sensors to remind them to make healthy lifestyle choices. Vans can be equipped with sensors to indicate maintenance and repair needs and even help drivers to be safer on the road.

You have been asked to give a talk to a class of 6th graders on the types of emerging medium- and wide-range wireless networks they can expect to be widely available by the time they graduate from high school. Which types of technology should you include in order to present the most thorough information?

Super Wi-Fi uses the lower-frequency "white spaces" between broadcast TV channels. These frequencies enable the signal to travel further and penetrate walls better than normal Wi-Fi frequencies. 5G networks are predicted to be faster and more intelligent than previous generations of cellular networks with applications in wearable technology. WiMAX can provide long-distance broadband wireless access to rural areas and other locations that are not currently being served.

You are a satellite communications sales executive. You are giving a briefing to international shipping companies requiring the use of sat-com on the high seas. All of the companies are interested in the newer GPS features and satellite telephone communication systems available. In addition, the two largest shippers are interested in entertainment services for their sailors including televised football packages and radio. Which of the following points should you include in your briefing

TV uses geostationary satellites and would require a receiver that could track the satellite's position. GPS uses 24 medium-earth-orbit satellites and can track one's position within 6 feet. Newer telecommunication satellites are being put into orbit quite often, and they have advanced capabilities over the last five years.

What is the relationship between the adoption of the IPv6 and the creation of the Internet of Things?

The Internet of Things is a system in which any object, natural or manmade, has its own IP address and is able to send and receive information over a network (i.e., the Internet) without human interaction. The adoption of the IPv6 created a vast number of IP addresses that allows a unique identify for every object on earth.

You are a security analyst attending a meeting concerning wireless network security at your firm. The VP of development has asked for this meeting because he is worried about the wireless security surrounding his developers' tablets and laptops. You have a corporate network system where you must initially locate and authenticate to a wireless station in the morning but can float around the offices with an encrypted session. The VP of development is concerned about attackers sniffing wireless sessions but thinks your boss's suggestion of protecting against evil twin attacks seems to be a waste of resources. How would you evaluate his position on wireless security for the firm, and why?

The VP need not be concerned about attackers sniffing wireless sessions as they operate on an encrypted corporate network unlike the public Wi-Fi at a coffee shop. However, since employees seek out and authenticate to the corporate SSID, an attacker could set up a rogue access point in order to gain corporate credentials. Therefore, an evil twin attack presents the greater threat.

An advertising executive is giving a presentation on m-commerce to her board. She suggests that while companies are using remote applications to allow consumers to locate stores and track packages, advertising targeted to consumers is a market that has been virtually untapped. She suggests that the firm develop an app to allow businesses to partner with other nearby businesses to let consumers know where they can shop, eat, and obtain other services in the same neighborhood.

The advertising executive is incorrect. Remote applications are widely used to allow consumers to locate stores and track packages, but advertising that is targeted based on locations is widely used. Such applications allow advertisers to suggest stores, restaurants, and other services based on a user's location

A large retailer is considering whether to implement a mobile phone app that would allow users to locate the store nearest them and check if items are in stock. What are some of the factors in favor of implementing the app?

The prices of wireless devices are declining and will continue to decline. Wi-Fi, 4G cellular technology, and WiMAX all provide the necessary bandwidth to conduct m-commerce. Mobile devices are becoming more available throughout the world.

Matrix Communications operates a wireless transmission system in several cities in the United States and Europe. Users of its television and Internet service often complain of interruptions during severe weather. What type of system is MOST susceptible to this problem, and why? What is a better alternative?

The company is using a microwave transmission system. Microwave transmissions require that the transmitter and receiver be in view of each other and, thus, cannot be spaced more than 30 miles apart. They are also susceptible to environmental interference. Microwave systems are being replaced by satellite transmission systems because they have a larger footprint and are less susceptible to interference. The company should weigh cost against performance when considering a satellite with a high, medium, or low orbit.

Ranger Environmental Services collects data from roadside counters then transmits the data through a wireless sensor system. What will the result be when the data reaches a central computer?

The data will be stored and analyzed.

What is the MOST LIKELY result if a wireless sensor "wakes up" for a fraction of a second when it has data to transmit?

The data will be transmitted to another sensor, and then another, until it reaches a central computer where the data is stored and analyzed

Meri purchased a phone that was advertised as 4G, but she experiences slower downloads when she uses her phone on the train. What is a possible explanation for this?

The phone was advertised as 4G, but it does not meet ITU-specified speeds.

You are an intelligence analyst for a defense think tank and are researching the latest breaking news surrounding a despotic nation's claims that it has destroyed an advanced country's satellite with a new type of missile system. It claims that the satellite it destroyed was broadcasting anti-government propaganda via television to its citizens. It also claims that the missile used was so advanced that it was able to track the rapidly moving satellite as it orbited the Earth at about 1,800 miles above the Earth's surface. You have contacted European, Australian, and North American agencies and satellite tracking companies, and you have found no reported outages. Although you are waiting on responses from Asia, Africa, and South America, the National Security Advisor wants to know if your think tank believes this is a credible claim. Needing to give an immediate answer, how would you BEST respond to his question

The probability is low that the despotic nation destroyed the satellite. There are discrepancies in the nation's claims. TV satellites are over 20,000 miles in orbit and remain in a fixed location over the Earth. If the despotic nation destroyed a moving satellite, none exists at 1,800 miles in orbit.

A sales engineer for a startup mobile app company is speaking to the Chamber of Commerce on mobile commerce applications. In describing telemetry applications, he says doctors can monitor patients and control medical equipment from a distance and allow technicians to identify maintenance problems and equipment. He also states that telemetry applications leverage a lean, or stripped-down, version of a Web site to keep data transfers to a minimum. Would you agree with his statements? Why or why not?

The sales engineer is correct in what telemetry equipment can do in a medical and maintenance setting. However, telemetry is the wireless transmission and receipt of data gathered from remote sensors; it does not leverage stripped-down Web sites

A marine recon sergeant is giving a communications briefing to special forces operators going on a rescue mission for a downed pilot. He is giving a full package communications lesson on GPS systems and makes the following claims: GPS is supported by 24 medium-earth-orbit satellites located around 10,000 km (6,400 miles) above the earth. These satellites are not geostationary satellites, and the receiver uses the speed and distance of the GPS signals to calculate an exact position on the earth to within about 6 feet. Evaluate his statements.

The sergeant is correct in all aspects of his briefing; he could even mention that three-dimensional location requires the use of four satellites.

Which of the following is MOST LIKELY to happen if Monika dials her boyfriend's number on her cell phone and hits the "call" button

The signal will be transmitted to the local antenna and passed from cell to cell until it reaches its destination

An IT specialist for a large university is speaking to the University Board about telemetry applications for students and professors. He suggests that students should use these applications to check school closures, class cancellations, room changes, weather and traffic conditions, directions to locations on and near campus, as well as check in at campus events so that friends can find them. He also suggests that the app could be partially financed by advertisements from nearby businesses. Evaluate the IT specialist's statements.

The specialist is correct. Telemetry applications allow location-based services that are specific to a given location. Location-based services include updates specific to the user's location and can be used to help users find each other at a given location. This also allows advertisers to send information about businesses to mobile devices when users are in the vicinity of the business

An IT specialist for a large university is speaking to the University Board about telemetry applications for students and professors. He suggests that students should use these applications to check school closures, class cancellations, room changes, weather and traffic conditions, directions to locations on and near campus, as well as check in at campus events so that friends can find them. He also suggests that the app could be partially financed by advertisements from nearby businesses. Evaluate the IT specialist's statements

The specialist is correct. Telemetry applications allow location-based services that are specific to a given location. Location-based services include updates specific to the user's location and can be used to help users find each other at a given location. This also allows advertisers to send information about businesses to mobile devices when users are in the vicinity of the business.

Chandler uses his cell phone to call Monica on her wireline phone. What is the final step in the transmission process that makes this possible?

The telephone message is transferred to the public switched telephone system to be transmitted to a wireline telephone.

What does line-of-sight refer to regarding transmitting media?

The transmitter and receiver are in view of each other.

Jonathan is trying to have a two-way conversation via satellite with his research team at the Arctic Circle while he is stationed at their headquarters in Nome, Alaska. There are big pauses between each team's sentences, and they frequently talk over each other. What is the likely cause of this?

Their transmissions are experiencing propagation delay because of the GEO satellite relaying their communication

Jonathan is trying to have a two-way conversation via satellite with his research team at the Arctic Circle while he is stationed at their headquarters in Nome, Alaska. There are big pauses between each team's sentences, and they frequently talk over each other. What is the likely cause of this?

Their transmissions are experiencing propagation delay because of the GEO satellite relaying their communication.

Compare ubiquity and instant connectivity

They are both value-added attributes created by m-commerce. Ubiquity means that consumers can provide information and communication, regardless of a user's location. Instant connectivity means that users can access mobile devices without booting up or placing a call via modem.

Compare customization and localization.

They are both value-added attributes created by mobility and broad reach.

What is an advantage of wireless devices?

They are small enough to carry and wear.

What do your cell phone and wireless router have in common?

They both use radio signals to transmit data

What do your cell phone and wireless router have in common?

They both use radio signals to transmit data.

Zoe is a caregiver in a large skilled nursing community. She has an app on her cell phone and laptop that allows her to track patients with dementia who are wearing a badge. If a patient wanders out of bounds, she is able to find the location of the nearest caregiver who is also wearing a badge. What kind of technology is Zoe using?

UWB

What is the relationship between Wi-Fi and Wi-Fi Direct?

Until 2010, Wi-Fi could only operate if a hotspot had a wireless antenna. Wi-Fi Direct allows users to transfer content among devices without having to rely on a wireless antenna.

James works at the HR department of a big organization, and he is aware of a big need to improve workflow processes in his department. What would be an effective way for James to enable such improvement?

Use Chatter to find organization-wide employees with workflow processing knowledge.

You are speaking with a group of residents at a local retirement home about the installation of sensors for accommodating the Internet of Things at their facility and how this will enhance their care and living experience at the retirement home. Which of the following topics should you include in your discussion?

Using IoT for Smart Home, where appliances have sensors and can be turned off remotely and alert maintenance; for Healthcare, where residents can wear Fitbits and have implanted sensors to monitor blood pressure and glucose; and for Energy Management, where smart grid appliances and light bulbs will lower the costs of residents' energy bills.

You are given an oral exam on medium-range wireless networks where the professor has asked you to give an account of the types of networks and features of each. Which of the following represents the BEST answer to your examiner?

Wi-Fi Direct enables peer-to-peer communications; MiFi is a portable, permanent Wi-Fi hotspot; and Super Wi-Fi uses whitespace between broadcast TV channels.

You have been asked to give a presentation on the current and future state of wireless technology in rural areas with few mobile hotspots. What type of wide-reach wireless technology is in development and what is currently available that you should be sure to include?

WiMAX has a wireless access range of up to 31 miles, compared to 300 feet for Wi-Fi. WiMAX can provide long-distance broadband wireless access to rural areas and other locations that are not currently being served.

_______devices are very portable because they are small enough to carry and can be worn.

Wireless

technology has transformed the manner in which many of Africa's 1 billion inhabitants receive healthcare.

Wireless

What is the relationship between LTE and XLTE networks?

XLTE networks maintain bandwidth speeds for users when LTE networks are highly congested.

An outdoor adventure company uses GPS technology utilizing satellites to map remote areas and help field guides find their way. It claims that this system is reliable because it is possible to find the location of any user within a range of 6 feet. It also equips its guides with recently-manufactured cell phones purchased in the U.S. to use in case they need to make a 911 call, requiring the guides to sign a waiver stating that, while rescue workers should be able to obtain their location, there are no guarantees about the length of time it will take rescue workers to arrive to a remote spot. Does the company give its guides accurate information?

Yes. GPS is a system that enables the tracking of a user's location anywhere on the earth. GPS is supported by 24 MEO satellites that are shared worldwide. The exact position of each satellite is always known because the satellite continuously broadcasts its position, along with a time signal. By using the known speed of the signals and the distance from three satellites (for two-dimensional location) or four satellites (for three-dimensional location), it is possible to find the location of any receiving station or user within a range of 6 feet. Cell phones in the United States now must have a GPS embedded in them so that the location of a person making an emergency call—such as 911, known as wireless 911—can be detected immediately. This does not guarantee that the location will be physically accessible, only that it will be detectable by GPS technology.

You are the manager of a coffee shop that provides free Internet access to its customers using a public hotspot. The coffee shop owner has read about evil twin attacks and asked you to post signs reminding customers that the information they share over your business's Internet connection might not be private. Is your boss justified in asking you to do this?

Yes. In one kind of evil twin attack, the attacker simply captures wireless transmissions. These attacks are more effective with public hotspots than with corporate networks.

Benjamin set up an access point at Bajor Systems but failed to inform the IT department. He compromised the company's wireless security without intending to do so. This is an example of

a rogue access point.

Daphne is sitting outside the headquarters of a large corporation. She uses a hotspotter to simulate an access point with the same SSID as the corporate intranet and waits until someone logs in using her Web browser instead of the corporate one. Once they do, she begins to work her way through the company's intranet, looking for any valuable information she can sell on the black market. This is an example of

an evil twin attack.

Unlike recruiting for high-paying jobs, large company recruiters for low-paying jobs tend to prefer

automated searches

A wireless sensor is a device that monitors its own condition as well as the physical and environmental conditions around it.

autonomous

If Mountain Outfitters switches from QR codes to UPC codes for tracking inventory, what can it expect?

larger tags that store more data

GPS software uses _________ to make a user's location more readable.

longitude and latitude

Karen is using a specific type of wireless transmission media. This media is allowing her to transmit high volumes of information across long distances for a relatively low price; however, it occasionally cuts out when there's a bad snow storm in her area. Which of the following is she MOST LIKELY using?

microwave

Inaccurate information is more of a disadvantage of

personal blogs.

Miles is intentionally using a device to interfere with all the wireless network transmissions for Main Street businesses and homes. This is an example of

radio frequency jamming.

Mickey is a reporter who works in remote areas. He is using an expensive wireless transmission media that requires a clear line of sight and allows him the large coverage area he needs for the locations from which he reports. Which of the following is he using?

satellite

In order to have job aggregators give you an automatic list of jobs, you need to

set up email reminders

James has a pacemaker. His cardiologist uses a mobile application once a week to monitor the functioning of James' pacemaker. This is an example of

telemetry.