Introduce type of frame 2

Question: What is the data frame?
Answer: It carries protocol data with higher-level in the body of frame. 







                                                     General data frame
In addition, some fields in this figure will not be used. (It depends on different particular type of data frame)

Question: What are different types of data frame?
Answer:

Question: What is the use of the address fields in data frames?
Answer: 


The means of abbreviation are in "description of this project"
To DS means from BSS to DS
From DS means from DS to BSS

Question: What is the management frame?
Answer: A large component of 802.11 specification. Several and different management frames are used for providing services which are simple on the wired-network. It is easy to establish the identity of a network station on a wired network because of requirement of network connections with dragged-wires from a central location to a new workstation. For example, a personal visit can authenticate to new network connections while the new connection has been brought up.
                                  The structure of management frame

Question: What are the subtypes of the management frame?
Answer:
a. Beacon (modify)
b. Probe (request and response)
c. Authentication (request and response)
d. Association (request and response)
e. Reassociation (request and response)
f. Disassociation (modify)
g. Deauthentication (modify)