Question 1

Mobile computing has two major characteristics that differentiate it from other forms of computing. What are these two characteristics?

Accepted Answer

The two major characteristics that differentiate mobile computing from other forms of computing are mobility and broad reach. Mobility allows users to move and access services from anywhere, while broad reach enables these services to be available to a wide audience.

Question 2

The OnStar system from General Motors is an example of telemetry.

Accepted Answer

Telemetry is the automatic measurement and transmission of data from remote or inaccessible sources to an IT system in a different location, and the OnStar system collects and transmits data from a vehicle to a central computer for remote diagnostics, navigation assistance, and emergency services, among other functions.

Question 3

Which type of satellite has the shortest orbital life?

Accepted Answer

Satellites in low earth orbit have the shortest orbital life because they are closest to the Earth's surface and experience more atmospheric drag, causing them to lose altitude and eventually re-enter the Earth's atmosphere.

Question 4

Rogue access points can be set up by employees.

Accepted Answer

Rogue access points can be set up by employees intentionally or unintentionally, which can pose a security risk to the company's network. It is important for companies to have policies and procedures in place to monitor and prevent the use of rogue access points.

Question 5

_____ is the standard that enables wireless devices to access Web-based information and services.

Accepted Answer

Wireless Application Protocol (WAP) is the standard protocol used to enable wireless devices to access Web-based information and services. It is specifically designed for small screens and limited bandwidths found on mobile devices.

Question 6

A(n) _____ allows unauthorized entry into a wireless network.

Accepted Answer

A rogue access point is a wireless access point that is installed on a network without the network administrator's knowledge or consent. It allows unauthorized entry into the network and can be used by attackers to gain access to sensitive information.

Question 7

Which type of satellite requires the highest number of satellites to cover the earth?

Accepted Answer

Low Earth Orbit (LEO) satellites require the highest number of satellites to cover the Earth because they orbit at a much lower altitude, meaning each satellite covers a smaller area of the Earth's surface compared to satellites in Medium Earth Orbit (MEO) or Geostationary Orbit (GEO). This necessitates a larger constellation of satellites to achieve global coverage.

Question 8

The advantages of RFID tags to Staples include all of the following except:

Accepted Answer

The answer of The advantages of RFID tags to Staples...

Question 9

The major problem with RFID has been:

Accepted Answer

The major problem with RFID has been its expense, which includes the costs of RFID tags and readers, making widespread adoption and implementation costly for many organizations.

Question 10

Wireless computing can increase speed and improve customer service.

Accepted Answer

Wireless computing can eliminate the need for physical connections, thus making processes faster and improving customer service by enabling employees to access information and complete tasks quickly and efficiently.

Question 11

Microwave transmissions are broadcast, where as satellite transmissions are point-to-point.

Accepted Answer

Microwave transmissions can be point-to-point or broadcast, but satellite transmissions are primarily point-to-point.

Question 12

With which type of satellite is there a propagation delay?

Accepted Answer

Only geostationary satellites have a propagation delay due to their high altitude and fixed position over the equator, leading to the signal having to travel a further distance between the earth and the satellite.

Question 13

Mobile applications in financial services include which of the following?

Accepted Answer

Mobile applications in financial services include all of the mentioned options, such as mobile banking, wireless electronic payment systems, micropayments, and brokerage services.

Question 14

Using your cell phone to purchase a Coke from a vending machine is an example of:

Accepted Answer

Using a cell phone to make a small payment (in this case, for a Coke) is an example of a micropayment. This is because the payment is a small amount and made electronically, typically using a mobile device. Mobile banking, wireless wallets, brokerage services, and money transfers are all different types of financial services, but do not specifically apply to this scenario.

Question 15

A(n) _____ is a new class of digital communication device that provides an organizer, cell phone, digital camera, access to e-mail, Internet access, and short message service.

Accepted Answer

A smart phone is a digital communication device that includes features such as an organizer, cell phone, digital camera, access to e-mail, Internet access, and short message service. The other options, such as pagers and personal digital assistants, may have some of these features but do not provide the all-in-one functionality of a smart phone. The Blackberry is a type of smart phone brand, but not all smart phones are Blackberries.

Question 16

Which of the following is the most appropriate wireless technology for real-time location of caregivers and mobile equipment in health-care environments?

Accepted Answer

Ultra wideband (UWB) is the most appropriate wireless technology for real-time location in health-care environments. UWB offers high accuracy and precision, allowing for tracking of people and equipment down to the centimeter level. It also has low power consumption and does not interfere with existing wireless systems, making it ideal for healthcare settings. Wi-Fi, microwave, and Bluetooth are not as precise and can have interference issues, while infrared is limited by line-of-sight constraints.

Question 17

Satellite radio offers uninterrupted, near-CD quality music that is beamed to your radio from satellites.

Accepted Answer

Satellite radio uses satellites to transmit digital audio signals that provide high-quality, uninterrupted music to listeners. The sound quality is often compared to that of a CD.

Question 18

Wi-Fi is a wireless standard that enables temporary, short-range connections between mobile devices.

Accepted Answer

Wi-Fi is a wireless networking technology that allows devices to communicate over longer distances than just short-range, and it is not limited to temporary connections but can provide continuous connectivity.

Question 19

Which of the following is not a mobile application in financial services?

Accepted Answer

Transaction processing systems are not mobile applications, they are backend systems that support various services such as mobile banking and wireless electronic payment systems. The other options (B, C, D, and E) are all mobile applications in financial services.

Question 20

A transmitter with an antenna that connects a mobile device to a wired local area network is called a(n):

Accepted Answer

A wireless access point is a bridge between a wired network and wireless devices, connecting the mobile device to the local area network. A transceiver is a device that can both transmit and receive signals, but it does not necessarily connect to a wired network. A transmitter is a device that only sends signals and does not necessarily connect to a wired network. Radio is a general term for a device that receives or transmits radio signals, but it does not necessarily connect to a wired network. A hotspot is a physical location that offers internet access over a wireless network through the use of a wireless router connected to a wired network.

Quiz 8: Wireless, Mobile Computing, and Mobile Commerce