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Xentino XAIR A400N User Manual
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5.5 What is BSSID?
A six-byte address is that distinguish a particular a particular access point from others. Also know as
just SSID. Serve as a network ID or name.
5.6 What is ESSID?
The Extended Service Set ID (ESSID) is the name of the network you want to access. It is used to
identify different wireless networks.
5.7 What are potential factors that may causes interference?
Factors of interference:

Obstacles: walls,
ceilings, furniture… etc.

Building Materials: metal door, aluminum studs.

Electrical devices: microwaves, monitors and electrical motors.
Solutions to overcome the interferences:

Minimizing the number of walls and ceilings.

Position the WLAN antenna for best reception.

Keep WLAN devices away from other electrical devices, eg: microwaves, monitors, electric
motors…etc.

Add additional WLAN Access Points if necessary.
5.8 What are the Open System and Shared Key authentications?
IEEE 802.11 supports two subtypes of network authentication services: open system and shared key.
Under open system authentication, any wireless station can request authentication. The station that
needs to authenticate with another wireless station sends an authentication management frame that
contains the identity of the sending station. The receiving station then returns a frame that indicates
whether it recognizes the sending station. Under shared key authentication, each wireless station is
assumed to have received a secret shared key over a secure channel that is independent from the
802.11 wireless network communications channel.
5.9 What is WEP?
An option of IEEE 802.11 function is that offers frame transmission privacy similar to a wired network.
The Wired Equivalent Privacy generates secret shared encryption keys that both source and
destination stations can use to alert frame bits to avoid disclosure to eavesdroppers.
WEP relies on a secret key that is shared between a mobile station (e.g. a laptop with a wireless
Ethernet card) and an access point (i.e. a base station). The secret key is used to encrypt packets
before they are transmitted, and an integrity check is used to ensure that packets are not modified in
transit.