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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z [NUMBER ENTRIES]

Access Point

Aruba Indoor Access Point	An access point is a piece of equipment that serves as a point of logical connection for Wi-Fi devices like notebook computers, PDAs, and VoIP phones. In the common use of the term, an access point can confirm that a particular wireless user is authorized to connect to the network, manage the encryption and decryption of data packets, and convert packets from their wired Ethernet frame format into the 802.11 Wi-Fi frame format. Every access point is configured with a network name, called the Service Set Identifier (SSID). Wireless clients can then connect to a chosen network by selecting the SSID from a list, or by configuring it into their wireless device. Technically speaking, the "SSID" is more correctly called the Extended Service Set Identifier (ESSID) since every access point has its own unique identifier, called the Basic Service Set Identifier (BSSID). The BSSID is the hardware (MAC) address of the access point itself. When multiple access points act together to present an ESSID they are said to be part of a distribution system. A wired distribution system, consisting of access points connected together through Ethernet cables, can make a single SSID (i.e.: ESSID) available throughout a building, campus, or outdoor location. This is a greatly simplified explanation of the functions of an access point, but it does present a general idea of what an access point does. As seen on the left, access points may take on the classic "2-antenna" form, or may be enclosed in aesthetically pleasing designs.
Colubris Outdoor Access Point

AirMagnet, Inc.

AirMagnet, Inc. is the manufacturer of the AirMagnet Handheld, Portable, and Enterprise wireless network analysis and security monitoring tools. These tools allow a network engineer to capture data packets and 802.11 management and control packets to monitor and troubleshoot a wireless network.

ASCII (American Standard Code for Information Interchange)

A standard for representing letter, number, and special character ("!@#$%^&*()_+=[]{}\|/?.,><~`) strings. If a list of ASCII-encoded strings is sorted, strings beginning with numbers will sort ahead of strings beginning with letters. This is the opposite of the way IBM's EBCDIC (Extended Binary Coded Decimal Interchange Code) works. The following table shows ASCII character encoding values. For example, a capital letter "A" is 0x41 (hex).

    0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F
0  NUL SOH STX ETX EOT ENQ ACK BEL BS  HT  LF  VT  FF  CR  SO  SI
1  DLE DC1 DC2 DC3 DC4 NAK SYN ETB CAN EM  SUB ESC FS  GS  RS  US
2   SP  !   "   #   $   %   &   '   (   )   *   +   ,   -   .   /
3   0   1   2   3   4   5   6   7   8   9   :   ;   <   =   >   ?
4   @   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O
5   P   Q   R   S   T   U   V   W   X   Y   Z   [   \   ]   ^   _
6   `   a   b   c   d   e   f   g   h   i   j   k   l   m   n   o
7   p   q   r   s   t   u   v   w   x   y   z   {   |   }   ~ DEL

ASN.1 (Abstract Syntax Notation.1)

ASN.1 is a language used for describing and representing structured information in a form that is hardware-independent. Consider the following challenges in information exchange between two different types of devices:

• Intel Pentium processors, for example, represent the decimal number 128 with the right-to-left byte pattern "00000001" (where the most-significant bit, the "128's place", is on the right and the least-significant-bit, the "1's place", is first). Motorola chipsets (as originally used in Apple computers) as well as the Apple G-series chipsets represent the number 128 with a left-to-right bit pattern "10000000", transmitting the most-significant-bit first.
• IBM SNA systems represent letter and number strings with the EBCDIC encoding standard. The Internet represents characters using ASCII data.

ASN.1 defines a method of binary encoding that allows data to be exchanged across otherwise different hardware and operating system environments.