Bad Addreses

If the subscriber addresses doesn't accept e-mail, the message bounces back to the MLM. Some MLM's allows you to configure the list, but this idea isn't always the good one. Almost all addresses bounce occasionally, due to mail host being down, mailboxes being full, or other technical problems addresses aren't deleted until messages bounce 10 times in a row or some similar amount. Many list managers prefer to configure their list that they receive bounce messages, and can decide themselves, based on the reason for the bounce, when and if to unsubscribe the address

Address Resolution Protocol

In TCP/IP, a protocol that uses broadcast traffic on the local network to resolve a logically assigned IP address to its physical hardware or media access control layer address

Address Classes

Predefined groupings of Internet addresses with each class defining networks of a certain size. The range of numbers that can be assigned for the first octet in the IP address is based on the address class. Class A networks (values 1 to 126) are the largest, with more than 16 million hosts per network. Class B networks (128 to 191) have up to 65,534 hosts per network, and Class C networks (192 to 223) can have up to 254 hosts per network.

Address Resource Record

A resource record used to map a DNS domain name to a host IP address on the network.

ActiveX

A set of technologies that allows software components to interact with one another in a networked environment, regardless of the language in which the components were created.

Active Volume

The volume from which the computer starts up. The active volume must be a simple volume on a dynamic disk. You cannot mark an existing dynamic volume as the active volume, but you can upgrade a basic disk containing the active partition to a dynamic disk. Once the disk is upgraded to dynamic, the partition becomes a simple volume that is active.

Active Partition

A partition from which an x86-based computer starts up. The active partition must be a primary partition on a basic disk. If you use Windows exclusively, the active partition can be the same as the system volume

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ISDN is now more than 20 years old, and there's been quite a lot of progress in the computer business in the interim. Network manager have found that ISDN's ability to operate as a Wide Area Network often is not needed because now it is not only possible to put 128K on a pair of a copper wires, but the wires depending on their length and condition, can accommodate up to several millions bit per second.

The 1990's response to ISDN is Digital Subscriber line, which comes in several varieties. Asymmetrical DSL is a popular Metropolitan Area Network for individuals and small business. It's asymmetrical because the Downstream speed is faster than the Upload speed, typically 1 Mbps Downstream and 256 Kbps Upstream, with a distance limit of about 3 miles from the central office to the customer. ADSL can share a single pair of wires with a regular phone line, But in practice, because a customer's ISP usually arranges for his ADSL, service, many phone companies refuse to bill phone service to the phone user and ADSL to another user on the same wires. The longer the wire from the phone company's central office to the customer, the slower the maximum speed that ADSL can provide. At times, a line maybe too long to support ADSL.Unlike regular phone service, DSL is unswitched, which means that it gives dedicated connection to ISP's.

ADSL lines run from local phone company central offices to businesses, and data may travel from an ADSL line to an Internet provider in several ways. Installing an ADSL modem on each ADSL line, which splits the regular phone lines from the DSL data, is the official technique. In this process, phone lines are connected to a phone switch, and the DSL data lines are connected to a DSL Access Multiplexor (DSLAM). A DSL Access Multiplexor combines the data from an ISP's customers unto a faster connection to the ISP.

Another approach is for an ISP to rent dry pairs, unconnected phone wires, and run ADSL on them. An ISP then can run DSL data directly into a TCP/IP router. The ISP rents dry pairs that run between its office and the phone company. The ISP then rents long dry pairs out to its customers and just ties the two dry pairs together at the phone company's central office. the sort pairs are cheap, and the ISP's avoids having to pay to use the phone company's DSLAM. The ISP also avoids having to rent expensive space at the phone company's central office for a router. This only works in areas where phone companies still sell dry pairs, a service originally intended for burglar alarm circuit, which phone companies are trying to phase out. In other places the ISP has to order an official ADSL line and arrange to hook it to a DSLAM. Otherwise it may need to rent space at the phone company's central office for a router.

Although ADSL is the most common type of DSL used for Internet access, there are a couple of other kinds. Symmetrical DSL), provides connections at up to several millions bits per second over two pairs of wires, with both directions transporting data at the same speed. It's more expensive and les widely available than ADSL, and it usually is used for connecting corporate networks to the net. High speed DSL , and High speed DSL2 also are symmetrical systems. They run at 1 Mbps.

A few phone companies provide so called IDSL , which is an ISDN connection that's always dialed-up. IDSL is technically inferior to other kinds of DSL.

Active Directory Users and Computers

An administrative tool designed to perform day-to-day Active Directory administration tasks. These tasks include creating, deleting, modifying, moving, and setting permissions on objects stored in the directory. These objects include organizational units, users, contacts, groups, computers, printers, and shared file objects.

Active Directory Data Model

A model derived from the LDAP data model. The directory holds objects that represent entities of various sorts, described by attributes. The objects and classes of objects that can be stored in the directory are defined in the schema. For each class of objects, the schema defines the attributes an instance of the class must have, the additional attributes it can have, and the class that can be its parent.  

Active Directory

The directory service that stores information about objects on a network and makes this information available to users and network administrators. Active Directory gives network users access to permitted resources anywhere on the network using a single logon process. It provides network administrators with an intuitive, hierarchical view of the network and a single point of administration for all network objects.

Active Content

Dynamic content, such as a stock ticker, a weather map, or news, that is usually updated from the World Wide Web or a channel.

Active

Describes the window or icon that you are currently using or that is currently selected. The operating system always applies the next keystroke or command you choose to the active window. Windows or icons on the desktop that are not selected are inactive.

Acknowledgment Message

For Message Queuing, a message class that indicates that a message arrived or was retrieved by the target application (a positive acknowledgment), or that an error occurred before the original message could be retrieved (a negative acknowledgment). These messages are sent to administration queues on the source computer.

Account Lock Out

A Windows security feature that locks a user account if a number of failed logon attempts occur within a specified amount of time, based on security policy lockout settings. Locked accounts cannot log on.

Access Control Entry

An entry in an object's discretionary access control list (DACL) that grants permissions to a user or group. An ACE is also an entry in an object's system access control list (SACL) that specifies the security events to be audited for a user or group. 

Access Control

A security mechanism that determines which operations a user, group, service, or computer is authorized to perform on a computer or on a particular object, such as a file, printer, registry key, or directory service object.

Address Resource Record

A resource record used to map a DNS domain name to a host IP address on the network.

4 Steps to Speed A Slow Internet Connection

Having a slow Internet connection is too bad, most specially if your doing online transaction almost everyday. to resolve that problem here's are the steps to speed up a slow Interenet conection.

STEP 1: REDUCE THE WEB CACHE
First step in speeding up your slow Internet connection to tweak your Internet options. To launch the Internet options utility follow the the direction below:
1.Click Start
2. Click Control Panel
3. Double Click Internet Options
4. Click Settings under Browsing History

The task here is to make your web cache as small as possible. The less disk space your reserve for your temporary files is less data that your computer needs to search through. This action can easily award you a faster connection on the net.
5. Reduce the Disk Space to Use to the minimum recommended amount or as low as your desire.

STEP 2: CLEAR TEMP FILES
Deleting your web cache is a good way to speed up a slow internet connection. These files take up valuable resources that could be used to for a better net surfing experience. Remember that while you are online many files in the web cache are active. Cookies are loaded in your browsers and constantly update themselves. Also your computer will search through the temp files to match the latest version of a web page. So, by clearing the web cache you cut down on the work your PC needs to do thus speeding up your slow internet connection. Remember to shutdown the browser when deleting the cache. Because what files are open will not be deleted. Here how to delete your temporary Internet file

Manual steps to erase your temporary Internet files.
1. Quit Internet Explorer, Firefox, or any other web browser
2. Click Start, click Control Panel, and then double-click Internet Options.
3. On the General tab, click Delete Files under Temporary Internet Files.
4. In the Delete Files dialog box, click to select the Delete all offline content check box , and then click OK.
5. Click OK.

If you prefer not to delete all the files you can selective search each category and delete. The temporary files are broken up into six categories. To view your internet files follow the steps below:

In Internet Explorer
1. Open Internet Explorer.
2. Choose Internet Options from the Tools menu.
3. Click the General, Under Temporary Internet Files, Click Settings.
4.Click View Files
5. Delete selected files

STEP 3: SPEED UP WEB PAGES
One of the biggest culprit of slow internet connections. Is your web browser's settings. When you log on to a web page, your computer is assaulted with data it needs to organize and present in an orderly manner. This information takes time to load. So, the more information the longer it takes to load. However you tweak a number of settings to decrease the time it takes to load a web page. By reducing the amount of animation and scripts. You can see drastic increases in your Internet surfing.

1.Click Start
2. Click Control Panel
3. Double Click Internet Options
4. Click Settings
5. Scroll down to Multimedia.
6. You can reduce the options in order to increase speed at which web pages are loaded.

STEP 4: CONTROL YOUR ANTIVIRUS
A slow internet connection is often a software related problem and not the fault of your ISP. Buying more bandwidth is always going to help. Slow down is a normal result of having security software like an anitvirus on your computer. The software must constantly update it files and signatures. All this information is logged in your computer. The majority of the information is placed in your registry.

When your antivirus performs a scan. It produces a log. This log can be up to 100 megabytes of information each. The registry holds all this info. The addition of the info is not the major problem. Its that the information is placed in many places in your registry. This causes fragmentation of files. Your computer's operating system must search through the massive files in the registry constantly. If the registry is error-filled, fragmented, or bloated with unnecessary and duplicate files, you will have major slowdown. Organize and keep it maintained, the problem will most likely be solved. You can scan to see the condition of your registry and see what resources you can unlock resources.

Also you should try to see what processes are loaded when your computer starts. Often the antivirus will check your email, scan, and even update at the same time. This may be occurring everytime you start up your PC. These acts can last as long as 3 hours. They may be running silently in the background without your knowledge. Maintain them by following the directions below or by tweaking the settings in your antivirus:

1. Open your Start menu.
2. Click Run
3. In the command screen type msconfig.exe
4. In the system configuration utility,click either service or startup
tab5. Uncheck all programs that you dont want to load win the antivirus is starting
 6. Click OK