Exam 5: IEEE 80211 Media Access Control and Network Layer Standards

The ____ field appears last in a data frame.

The ____ draft defines a superset of features that is intended to provide QoS over WLANs.

At regular intervals the AP in an infrastructure network or wireless device in an ad hoc network sends a ____ frame both to announce its presence and to provide the necessary information for other devices to join the network.

The RTS/CTS protocol is especially taxing when ____ data packets are being transmitted.

What is the default authentication method according to the 802.11 standard?

Which of the following describes a wireless device switching from one AP to another?

When a laptop, either in ad hoc or infrastructure mode, is connected to a standard alternating current (AC) plug for power it is in ____________________ mode and remains in communication with the AP or other wireless devices.

Describe Mobile IP.

Wi-Fi Multimedia (WMM) outlines four levels of prioritization for WLAN QoS. Name and provide a brief description for each one.

____________________ involves dividing the data to be transmitted from one large frame into several smaller ones.

What is a Basic Service Set?

A(n) ____________________ Service Set is a wireless network that does not use an access point.

Describe the three interframe spaces (IFS) defined in the 802.11 standard.

CSMA/CA eliminates the possibility of collisions.

When an AP accepts or rejects a wireless device it sends a(n) ____ frame.

When an ESS is installed it is desirable to configure the areas of coverage much like cells in a cellular telephone system.

What is the difference between passive and active scanning?

The ____ field appears first in a management frame.

What fields are contained in the body of a beacon frame?

Why is CSMA/CD unsuitable for wireless networks?