Exam 9: Wireless Technologies

Which is not true about the 802.11 standard?

In wireless networking, the broadcast area around an access point is called a(n)____________________.

What is open system authentication?

Infrared technologies are more popular than radio wave technologies.

What is TDD, and which wireless networking specification uses it?

The figure above shows an example of ____ antennas.

____ is a wireless networking specification that uses frequency hopping within the 2.4 GHz band.

The ____________________ wireless specification supports DES, QoS, and operates in both the direct and centralized modes.

Which is not true?

In terrestrial microwave , the signal is transmitted between two directional parabolic antennas.

Satellite microwave is the most expensive type of microwave networking.

It is a commonly accepted practice to combine both an IBSS and an ESS network in the same proximity.

Priority-based access is intended for communications that are time-sensitive.

____ technologies offer the potential to one day create a global area network that reaches all around the world.

____ originated in Europe and can transmit at up to 54 Mbps in the 5 GHz range.

In radio network transmissions, a signal is transmitted in only one direction.

Most wireless radio wave technology network equipment employs ____ technology for packet transmissions.

OFDM is performed at the ____ layer of the OSI model.

A(n)____________________ is a device that attaches to a cables network and that services wireless communications between WNICs and the cabled network.

____ are the range of frequencies above 20 kilohertz through which an electromagnetic signal can be radiated into space.