Chat with AIExam 1: Foundations of Wireless Security
Briefly explain how wireless technology increases network reliability.
(34) 
VerifiedOne of the main sources of wired network problems is network cable failure. Moisture from a leak during a thunderstorm or a coffee spill can erode metallic conductors. A user who shifts the computer on his or her desk may break one or more of the wires in a patch cable. A cable splice that is done incorrectly can cause problems that result in intermittent errors that are very difficult to identify. Using wireless LAN technology eliminates these types of cable failures and increases the overall reliability of the network.
What are the main characteristics of the IEEE 802.11b standard?
(43) VerifiedThe bandwidth of 2 Mbps for the 802.11 standard introduced in 1997 was not sufficient for most network applications. The IEEE body revisited the 802.11 standard shortly after it was released to determine what changes could be made to increase the speed. In September 1999 a new IEEE 802.11b amendment was added to the standard, which added two higher speeds (5.5 Mbps and 11 Mbps) to the original 802.11 standard (1 Mbps and 2 Mbps). Like the 802.11 standard, 802.11b uses the ISM band.
The 802.11b standard can support wireless devices that are up to 115 meters (375 feet) apart. However, devices that are that far apart might not be transmitting at 11 Mbps. Radio waves decrease in power over distance, much like the sound of your voice: a person standing 1 meter away from you might hear you very clearly, whereas a person 60 meters away would have difficulty hearing you. Instead of completely dropping the signal if it falls out of range to transmit at 11 Mbps, the 802.11b standard specifies that the devices should drop their transmission speed to the next lower level (5.5, 2, or 1 Mbps). This allows devices to transmit farther apart but at slower speeds.
The 802.11g standard, which is backward-compatible with 802.11b, specifies that devices operate entirely in the ____ frequency.
(27) VerifiedD
____ protects the integrity, confidentiality, and availability of information on the devices that store, manipulate, and transmit the information through products, people, and procedures.
(26) ____________________ uses the existing data WLAN to make and receive telephone calls.
(42) A ____ site provides office space but the customer must provide and install all the equipment needed to continue operations.
(28) Briefly explain how wireless technology benefits the health care industry.
(41) For computer networking and wireless communications the most widely known and influential organization is the ____________________.
(38) A(n) ____________________ site has all the equipment needed for an organization to continue running, including office space and furniture, telephone jacks, computer equipment, and a live telecommunications link.
(33) ____ is a general term used to describe worms, viruses, spyware, or other types of software with a malicious intent.
(26) ____ is software (or sometimes hardware) that allows to view the contents of wireless packets.
(27) The FDA serves as the primary regulatory agency for wireless communications in the United States and its territorial possessions.
(39) The radio frequency spectrum is divided into over 450 different sections or ____.
(32) IEEE ____ standards set specifications for Ethernet local area network technology.
(33) An employee who purchases a wireless access point and brings it into the office to provide personal wireless access has installed a ____.
(38) In October 2002, the WECA organization changed its name to ____.
(29) Along with the many advantages of WLAN technology there are disadvantages and concerns. These include radio frequency interference, health risks, and ____.
(39) The term ____________________ is frequently used to describe the tasks of guarding information that is in a digital format.
(28) A ____ network can determine the optimum route for a packet to travel across the WLAN based on the quality required.
(38) 
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