iPhone 5 vs. Galaxy S3 vs. Lumia 920 Difference

The Apple iPhone 5 is finally real. While its specs are premium, the iPhone isn't the only worthwhile smartphone on the block. We compare it, spec to spec, to the top Android and Windows phones: the Samsung Galaxy S3, and Nokia Lumia 920.

iPhone S3

NOKIA Lumia 920

SAMSUNG GALAXY S3

	Apple iPhone 5	Samsung Galaxy 3	Nokia Lumia 920
Operating system	iOS 6	Android 4.0	Windows Phone 8
Display	4-inch IPS LCD; 1,136x640 pixels, 326 ppi	4.8-inch HD Super AMOLED; 1,280x720 pixels, 306 ppi	4.5-inch AMOLED; 1,280x768 pixels, 332 ppi
Price	$199.99, $299.99, $399.99	$199.99-$329.99, depending on carrier	Unannounced
Carrier	Sept. 21: AT&T, Sprint, Verizon	Now: AT&T, Sprint, T-Mobile, U.S. Cellular, Verizon	Unannounced
4G LTE	Yes	Yes	Yes
Camera	8-megapixel, 720p front-facing	8-megapixel, 1.9-megapixel front-facing	8.7-megapixel, 1.2-megapixel front-facing
Processor	Proprietary A6 CPU	1.5GHz dual-core Qualcomm Snapdragon S4	1.5GHz dual-core Qualcomm Snapdragon S4
Memory	16GB, 32GB, 64GB	16GB or 32GB; 2GB RAM	32GB; 1GB RAM
Expandable memory	No	Up to 64GB	No
Battery	Capacity TBA (Talk time up to 8 hours on 3G); embedded	2,100 mAh, removable	2,000 mAh, embedded
NFC	No	Yes	Yes
Weight and thickness	3.95 ounces, 0.3 inches	4.7 ounces, 0.34 inches	6.5 ounces, 0.42 inches
Colors	Black, white	White, blue, red (AT&T); Also, globally: black, brown, gray	Black, white, yellow, red, gray

Design and build
             Apple's aluminum-and-glass iPhone 5 retains its super-industrial aesthetic, metal buttons and all. Its new, all-metal backing could look slightly less luxe than the iPhone 4S', but it will survive far more drops.We find the GS3's design appealing, but shiny, glossy plastic doesn't scream "quality." That isn't to say that the GS3 is more prone to breaking or shattering than the other two; in fact, plastic has the benefit of scuffing rather than shattering. However, we do really love the GS3's in-hand feel, which is comfortable despite its much larger size.
Our winner so far: Based on looks alone, we're digging the iPhone 5's familiarly crisp lines most, but we also love the Lumia 920's colorful unibody statement.

Camera prowess
This is a tough call since all three phones bring their A-game here. The iPhone has set the benchmark in terms of camera phone performance for quite a while and the improvements to the iPhone 5's imaging system will no doubt cement its lead. These include improved low-light performance and a new panorama shooting mode that catches up to Android.Of course Android devices in many cases surpass the iPhone. Samsung's Galaxy S3 has a sensor that offers the same 8-megapixel resolution as the iPhone 5, plus it features tons of fancy shooting modes like panorama and multishot burst mode.

The Nokia Lumia 920 is the real dark horse in the smartphone camera phone arms race. On paper, its 8.7-megapixel camera and PureView technology promise better performance than both the iPhone and Galaxy S3. It also will be able to run special apps within the camera application itself, allowing you to upgrade its functionality greatly over time -- at least that's the theory.Our winner so far: Though we haven't seen the iPhone 5's camera in action, chances are high that it'll trump the Galaxy S3 since the iPhone 4S matches the GS3 now. Because Nokia's Lumia 920 is still unproven and the Lumia 900's camera wasn't awe-inspiring, we're tempering our hopes with doubts.

LTE and network promise
A this point, LTE on the iPhone 5 was an inevitability, and a feature that's been in the hopper for some time. Verizon has already sworn that all its new smartphones will have LTE, and AT&T and Sprint are expanding their respective networks.Our winner so far: Samsung phones have long been LTE-capable and the Nokia Lumia 920 will be Espoo's second LTE phone. Apple is just now catching up.

Battery life
Nokia plans to equip its Lumia 920 with a 2,000 mAh battery, which should provide a good amount of run time, especially considering that Windows Phone has traditionally been a very economical operating system. Meanwhile, the Samsung Galaxy S3 comes with a slightly larger 2,100 mAh battery that lasted for well over 9 hours playing video. Apple is coy on the iPhone 5's capacity, but promises that its will offer 10 hours of video playback and 8 hours of Web surfing over LTE.Of course, if you're constantly using battery-draining features like S-Voice on the Galaxy S3, or streaming video, no phone will last as long as you'd like.Our winner so far: It's hard to say since we haven't put the Lumia 920 or iPhone 5 to the test, but the Galaxy S3 is a sure bet for most, plus it offers a removable battery.

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Wireless Local Area Network (WLAN)

A wireless local area network (WLAN)
A wireless local area network (WLAN) uses radio frequency (RF) technology to transmit and receive data over the air.The Institute of Electrical and Electronics Engineers (IEEE) have established the IEEE 802.11 standard, which is the predominant standard for wireless LANs.Any LAN application, network operating system, or protocol including TCP/IP, will run on 802.11-compliant WLANs as they would over Ethernet

802.11 Standards
The WLAN standards began with the 802.11 standard, developed in 1997 by the IEEE. This base standard allowed data transmission of up to 2 Mbps. Over time, this standard has been enhanced. These extensions are recognized by the addition of a letter to the original 802.11 standard, such as 802.11b.

802.11 b
The 802.11b specification was ratified by the IEEE in July 1999
Radio frequencies in the 2.4 to 2.497 GHz bandwidth of the radio spectrum.
The modulation method selected for 802.11b is known as complementary direct sequence spread spectrum (DSSS) using complementary code keying (CCK) making data speeds as high as 11 Mbps

802.11 a
802.11a operates at radio frequencies between 5.15 and 5.875 GHz.
A modulation scheme known as orthogonal frequency division multiplexing (OFDM) makes data speeds as high as 54 Mbps possible.

802.11 g
802.11g operates at radio frequencies in the 2.4 GHz to 2.497 GHz range (similar to 802.11b), it utilizes the same Orthogonal Frequency Division Multiplexing (OFDM ) modulation allowing for throughput up to 54 Mbps.

Network Requirements
The ease of setting up a WLAN is contributing to its rapid adoption. Reference the following checklist when implementing a new WLAN or expanding an existing WLAN.

Hardware—WLAN consist of two main building blocks including an access point that connects to the network and a wireless adapter installed in the computing device.
Access point—An access point is a small box, usually with one or two antennas. This radio-based, receiver/transmitter is connected to the wired LAN (or broadband connection) using Ethernet cables.
Antennas and bridges—Antennas enhance the radio frequency coverage extending the range of an 802.11 WLAN. Bridges provide point-to-point wireless connection between two LANs, like different floors.
Wireless adapter—A wireless adapter functions like a network interface card (NIC) in that it allows the client computing device access to the network by means of the wireless access point

Security:-
Basic Industry Standard Security: Built into the 802.11b specification, WLAN may be protected by:
Service set identifier (SSID)—A common key that identifies the WLAN. Clients must be configured with the correct SSID to access their WLAN. The key should be shared only with those having legitimate need to access the network so broadcast of SSIDs should be disabled. Also the SSID should be changed periodically.
Media access control (MAC)—Filtering addresses restricts WLAN access to computers that are on a list you create for each access point on your WLAN. This should be enabled.
Wired equivalent privacy (WEP)—Encryption scheme that protects WLAN data streams between clients and APs as specified by the 802.11 standard. This should be turned on.

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How to Make Network Cables?

How to Make Your Own Network Cables?

1. Making your own network cable
A network cable basically consists of a patch cable and two network connectors (formally known as RJ45 modular plugs) attached to each of its ends. The job of making your own cable is attaching these connectors to a patch cable.
What you need:
A crimping/cutting/stripping tool: This the most important tool; it helps cut, strip, and crimp patch cable. It costs just about $15. I personally use the Trendnet TC-CT68.
Patch cable: You can buy this in bulk; it costs anywhere between $40 to $100 for 1,000 feet. Shorter length costs less, accordingly. You can also turn an existing network cable into a patch cable by cutting off one or both of its network connector heads. This is typical when you want to make a cable shorter or want to replace a broken network connector.
RJ45 modular plugs: These network connector heads are very cheap; you can get 100 pieces for just a few dollars online.

The steps:
a. Use the tool to strip the patch cable's jacket about 1.5 inch from one end; you'll find eight color-coded wires (twisted into four pairs) that you'll need to arrange in a particular scheme.
This scheme, from left to right, is:
white/orange
solid orange
white/green
 solid blue 
white/blue 
solid green 

white/brown

solid brown.
Remembering this order is the hardest part of making the cable.
 There's no difference in terms of performance between these two wiring standards, and you can also use both of these wiring standards on one cable (one for each end) to make it a crossover cable used to connect two Ethernet-ready devices directly to each other.
b. With these wires pulled out straight and close together in the order above, make sure they are all the same length (you can trim them a bit if need be). Now insert them into a modular plug with the plug's bottom facing you. This step is actually very easy. Despite the small sizes of the parts involved, the plug has pin grooves on the inside to accommodate the wires, and the tiny size means that the wires can't easily go to wrong pins as long as they are properly aligned coming in. Check to make sure the wires go into the plug in the right order.
c. Insert the plug (with the wires now inside) into the crimp slot of the tool and crimp it.
Repeat the same step with another plug on the other end of the patch cable, and you have made yourself a network CAT5e cable. A quick calculation shows that a homemade network cable costs just a few cents per foot.
2. Wiring a wall network port
Now that you know how to make your own network cable, let's talk about how to hide it. As you might imagine, it's not a good idea to run a long cable from the router (in the living room) all the way to the home office, with say, the kitchen in between. Instead, it's better to make two wall network ports, one at the router and the other in the office. The cable connecting these two network ports can be hidden under the floor, on the roof, or behind the wall.
Depending on your home, the actual job of running patch cables behind the wall or under the house, and making both of its ends come out of the wall can be tricky. You might want to hire a handyman for that job, especially the part where you need to cut holes in the wall. In this post, though, I'm just talking about how you can make an Ethernet jack, with the ends of the patch cable already sticking out of the wall. Again, this is a CAT5e jack, also known as a RJ-54 Ethernet jack. A CAT6 jack has the same wiring, however.

What you need:
A punch-down tool: This tool costs about $20. I use a Trendnet TC-PDT, which incorporates a blade to cut off extra wires.
Ethernet jack and wall plate: As many as needed. Generally a set of one jack and one wall plate costs around $5. You can buy these separately and you can find a wall-pate that can house more than one jack.
The steps:
a. Use the stripping tool (or a pair of scissors) to strip the patch cable about 2-inches from its end. You can strip more than 2 inches if need be since the extra length will be cut off, but note that there's a limited amount of patch cable coming out of the wall so you don't want to cut it too short. Spread the 8 wires from one another. There's no need to put them in a particular order since the pins on the Ethernet jack are color coded.
b. Place the cable in the middle of the jack and push its wires on the pins of matching color for the 568B standard. This means that the orange wire goes into the orange pin, the blue wire goes into the blue pin, and so on. Technically, you can use the 568A wiring standard, but in this case you'd need to do the same with the other end. Generally, you want to avoid using 568A for network ports because it could cause problems in the future if somebody else repairs the port and uses the more common 568B standard.
c. Use the punch-down tool to punch these wires down on their pin in one quick motion. If you do it right, the wire will be punched down, and the excessive wires will be cut off.

Now you just need to install the wall plate and you are done with one network port. Now you can make another port at a different end of the house that connects to the port you have just made if you want to have just a single wired connection. For a home with multiple wired connections with devices being far apart, though, you should consider using a patch panel for the other ends of the (hidden) patch cables.
3. Wiring a patch panel.
If you want to have a wired network with many wall network ports coming out in different rooms of the house, it's best to use a patch panel at the central location where the router/switch and/or the home server is. A network patch panel is basically a collection of many wall ports on one panel, with each of the ports connected via a patch cable to another port elsewhere in the house. This allows for easy management of the wired network and better organization.

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Configure the domain controller

Domain controllers store data and manage user and domain interactions, including user logon processes, authentication, and directory searches. If you plan to use this server to provide the Active Directory directory service to network users and computers, configure this server as a domain controller.
To configure a server as a domain controller, install Active Directory on the server. There are four options available in the Active Directory Installation Wizard. You can create an additional domain controller in an existing domain, a domain controller for a new child domain, a domain controller for a new domain tree, or a domain controller for a new forest.
To configure the domain controller CPANDL-DC, you must:

• Install Windows Server 2003 with SP2.
• Configure TCP/IP properties.
• Install Active Directory.
• Raise the Active Directory domain functional level to Windows Server 2003.
• Create user accounts.
• Create groups for the user accounts.

For each user account and group that you configure with AD RMS, you need to add an e-mail address and then assign the users to groups.
First, install Windows Server 2003 with SP2 on a stand-alone server.
To install Windows Server 2003, Standard Edition
Start your computer by using the Windows Server 2003 product CD. (You can use any edition of Windows Server 2003 except the Web Edition to establish the domain.)
Follow the instructions that appear on your computer screen, and when prompted for a computer name, type CPANDL-DC.
Next, configure TCP/IP properties so that CPANDL-DC has a static IP address of 10.0.0.1. In addition, configure 10.0.0.1 as the IP address for the DNS server.

1. To configure TCP/IP properties on CPANDL-DC
2. Log on to CPANDL-DC as a member of the local Administrators group.
3. Click Start, point to Control Panel, point to Network Connections, click Local Area Connection, and then click Properties.
4. On the General tab, click Internet Protocol (TCP/IP), and then click Properties.
5. Click the Use the following IP address option. In the IP address box, type 10.0.0.1. In the Subnet mask box, type 255.255.255.0.
6.  Click OK, and then click Close to close the Local Area Connection Properties dialog box.
7. Next, configure the computer as a domain controller.

To configure CPANDL-DC as a domain controller

1. Click Start, and then click Run. In the Open box, type dcpromo, and then click OK.
2. On the Welcome page of the Active Directory Installation Wizard, click Next.
3. Select the Domain controller for a new domain option, and then click Next.
4. Select the Domain in a new forest option, and then click Next.
5. Select the No, just install and configure DNS on this computer option, and then click Next.
6. In the Full DNS name for new domain box, type cpandl.com, and then click Next.
7. In the Domain NetBIOS name box, type CPANDL, and then click Next three times.
8. Select the Permissions compatible only with Windows 2000 or Windows Server 2003 operating systems option, and then click Next.
9. In the Restore Mode Password and Confirm password boxes, type a strong password. Click Next.
10. Click Next again.
11. When the Active Directory Installation Wizard is done, click Finish.
12. Click Restart Now.

Note :- You must restart the computer after you complete this procedure.
Next, you must raise the domain functional level to Windows Server 2003 so that Active Directory Universal groups can be used.

1.  To raise the domain functional level to Windows Server 2003
2. Log on to CPANDL-DC with the CPANDL\Administrator account or another user account in the Domain Admins group.
3. Click Start, point to Administrative Tools, and then click Active Directory Users and Computers.
4. Right-click cpandl.com, and then click Raise domain functional level.
5. In the list under Select an available domain functional level, click Windows Server 2003, and then click Raise.
6. Click OK to confirm the selection.  
7. Note :-You cannot change the domain functional level once you have raised it.
8.  Close the Active Directory Users and Computers console.

Next, add the user accounts shown in the following table to Active Directory. Use the procedure following the table to create the user accounts.

Account Name	User Logon Name	E-mail address	Group
ADRMSSRVC	ADRMSSRVC
ADRMSADMIN	ADRMSADMIN		Enterprise Admins
Nicole Holliday	NHOLLIDA	nhollida@cpandl.com	Employees, Finance
LimorHenig	LHENIG	lhenig@cpandl.com	Employees, Marketing
Stuart Railson	SRAILSON	srailson@cpandl.com	Employees, Engineering

To add new user accounts

1. Click Start, point to Administrative Tools, and then click Active Directory Users and Computers.
2. In the console tree, expand cpandl.com.
3. Right-click Users, point to New, and then click User.
4. In the New Object – User dialog box, type ADRMSSRVC in the Full name and User logon name boxes, and then click Next.
5. In the New Object – User dialog box, type a password of your choice in the Password and Confirm password boxes. Clear the User must change password at next logon check box, click Next, and then click Finish.
6. Perform steps 3-6 for each of the following users: ADRMSADMIN, Nicole Holliday, LimorHenig, and Stuart Railson.
7. Next, add e-mail addresses to all user accounts.

To add e-mail addresses to user accounts
1.In the Active Directory Users and Computers console, right-click Nicole Holliday, click Properties, type nhollida@cpandl.com in the E-mail box, and then click OK.
2.Repeat step 1 for LimorHenig and Stuart Railson, using the e-mail addresses for each account from the table.
3.Close the Active Directory Users and Computers console.

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Nokia Windows phone 8 launch

                     Nokia unveiled the Lumia 920 and 820 with PureView, its first smartphones using Windows 8 software, in a joint event with Microsoft in New York, at a critical time for both companies.Nokia has finally launched its smart phone handsets powered by Microsoft's Windows Phone 8 operating system. Microsoft and Nokia unveiled the new Lumia 820 and 920 smartphones at a special event in New York.According to the BBC, the new Lumia 920 features wireless charging and a 'PureView' camera, which the mobile firm said offered better video and still images than rival smartphones. It also features several Nokia-only functions designed to make it stand out from other Windows Phone 8 devices.The firm claimed that 'floating lens technology' meant the handset could capture up to 10 times the amount of light than other handsets.
 Design and screen:
The Nokia Lumia 920 has an almost identical physical design as the Lumia 900 before it. This time, the handset comes in Sunshine Yellow, but Nokia will also issue it in Lipstick Red, and Slate Grey.While most of the polycarbonate body remains unchanged, Nokia has improved the screen. The Lumia 920 gets a 4.5-inch Nokia PureMotion HD Plus display, which features a WXGA resolution (1,280x768 pixels), a slightly higher resolution than the standard HD (1,280x720 pixels). It has a fast refresh rate that removes flickers. Nokia also claims it's brighter than rival phones, but we'll have to see about that.

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MCITP

What is MCITP?
The Microsoft Certified IT Professional (MCITP) certification helps validate that an individual has the comprehensive set of skills necessary to perform a particular IT job role, such as database administrator or enterprise messaging administrator. MCITP certifications build on the technical proficiency measured in the Microsoft Certified Technology Specialist (MCTS) certifications. Therefore, you will earn one or more MCTS certifications on your way to earning an MCITP certification.

MCITP CERTIFICATIONS:-

Microsoft Certified IT Professional (MCITP)

The Microsoft Certified IT Professional (MCITP) credential helps validate that an individual has the comprehensive set of skills necessary to perform a particular job role, such as database administrator or enterprise messaging administrator. It provides widely recognized, objective validation of a candidate's ability to perform critical, current IT job roles by using Microsoft technologies to their best advantage.
These certifications are designed for IT professionals including administrators and support personnel in addition to database specialists (both administrators and developers). To obtain an MCITP certification, you must first obtain one or more prerequisite MCTS certifications, and then pass the qualifying "PRO" exam(s):

Database Administrator

• Exam 70-443 (PRO): Designing a Database Server Infrastructure by Using Microsoft SQL Server 2005
• Exam 70-444 (PRO): Optimizing and Maintaining a Database Administration Solution by Using Microsoft SQL Server 2005

Database Developer

• PREREQ: MCTS: SQL Server 2005 (70-431)
• Exam 70-441 (PRO): Designing Database Solutions by Using Microsoft SQL Server 2005
• Exam 70-442 (PRO): Designing and Optimizing Data Access by Using Microsoft SQL Server 2005

Business Intelligence Developer

• PREREQ: MCTS: SQL Server 2005, Business Intelligence Development and Maintenance (70-445)
• Exam 70-446 (PRO): Designing a Business Intelligence Solution by Using Microsoft SQL Server 2005

Database Administrator 2008

• PREREQ: MCTS: SQL Server 2008, Implementation and Maintenance (70-432)
• Exam 70-450 (PRO): Designing, Optimizing and Maintaining a Database Server Infrastructure Using Microsoft SQL Server 2008

Database Developer 2008

• PREREQ: MCTS: SQL Server 2008, Database Development (70-433)
• Exam 70-451 (PRO): Designing Database Solutions and Data Access Using Microsoft SQL Server 2008

Business Intelligence Developer 2008

• PREREQ: MCTS: SQL Server 2008, Business Intelligence Development and Maintenance (70-448)
• Exam 70-452 (PRO): Designing a Business Intelligence Infrastructure Using Microsoft SQL Server 2008

Enterprise Messaging Administrator 2007

• PREREQ: MCTS: Exchange Server 2007 - Configuration (70-236)
• Exam 70-237 (PRO): Designing Messaging Solutions with Microsoft Exchange Server 2007
• Exam 70-238 (PRO): Deploying Messaging Solutions with Microsoft Exchange Server 2007

Enterprise Messaging Administrator 2010

• PREREQ: MCTS: Exchange Server 2010 - Configuration (70-662)
• Exam 70-663 (PRO): Designing and Deploying Messaging Solutions with Microsoft Exchange Server 2010

Consumer Support Technician

• PREREQ: MCTS: Windows Vista, Configuration (70-620)
• Exam 70-623 (PRO): Supporting and Troubleshooting Applications on a Windows Vista Client for Consumer Support Technicians

Enterprise Support Technician

• PREREQ: MCTS: Windows Vista, Configuration (70-620)
• Exam 70-622 (PRO): Supporting and Troubleshooting Applications on a Windows Vista Client for Enterprise Support Technicians

Windows 7, Enterprise Desktop Support Technician

• PREREQ: MCTS: Windows 7, Configuration (70-680)
• Exam 70-685 (PRO): Windows 7, Enterprise Desktop Support Technician

Enterprise Desktop Administrator 7

• PREREQ: MCTS: Windows 7, Configuration (70-680)
• Exam 70-686 (PRO): Windows 7, Enterprise Desktop Administrator

Server Administrator

• PREREQ: MCTS: Windows Server 2008 Active Directory Configuration (70-640)
• PREREQ: MCTS: Windows Server 2008 Network Infrastructure Configuration (70-642)
• Exam 70-646 (PRO): Windows Server 2008, Server Administrator

Enterprise Administrator

• PREREQ: MCTS: Windows Server 2008 Active Directory Configuration (70-640)
• PREREQ: MCTS: Windows Server 2008 Network Infrastructure Configuration (70-642)
• PREREQ: MCTS: Windows Server 2008 Applications Infrastructure Configuration (70-643)
• PREREQ: MCTS: Windows 7, Configuring (70-680), OR, MCTS: Windows 7, Deploying Windows and Office 2010 (70-681), OR, MCTS: Windows Vista, Configuration (70-620), OR, MCTS: Business Desktop Deployment (70-624, Retired Exam)
• Exam 70-647 (PRO): Windows Server 2008, Enterprise Administrator (70-647)

Windows Server 2008 R2, Virtualization Administrator

• Exam 70-693 (PRO): Windows Server 2008 R2, Virtualization Administrator

Enterprise Project Management with Microsoft Office Project Server 2007

• PREREQ: MCTS: Managing Projects with Microsoft Office Project 2007 (70-632)
• PREREQ: MCTS: Enterprise Project Management with Microsoft Office Project Server 2007 (70-633)
• Exam 70-634 (PRO): Microsoft Office Project Server 2007, Managing Projects and Programs.

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Exchange Servers

Exchange Servers:-
              Microsoft Exchange Server is the server side of a client–server, collaborative application product developed by Microsoft. It is part of theMicrosoft Servers line of server products and is used by enterprises using Microsoft infrastructure products.Microsoft Exchange Server is the brand name for Microsoft's email server software and is typically found in corporations running Microsoft Windows Server. In addition to email Exchange Servers also provide centralized company address books, shared calendars and web browser access.
             

 Versions of Exchange Servers:

Exchange 1.0:-

             Windows Messaging, initially called Microsoft Exchange, is an e-mail client that was included with Windows 95, Windows 98, and Windows NT 4.0.Microsoft Exchange gained wider usage with the release of Windows 95, as this was the only e-mail client that came bundled with it.          

Exchange Server 4.0

                Microsoft began a preliminary planning of the Exchange 4.0 migration in April 1993 and finally all 32,000 Microsoft mailboxes successfully migrated to Exchange and Microsoft Exchange shipped in April 1996.It is upgrade to Microsoft Mail 3.5. The original version of Microsoft Mail (written by Microsoft) had been replaced, several weeks after Lotus acquired cc:Mail, by a package called Network Courier, acquired during the purchase of Consumer Software.

Exchange Server 5.0

                 Exchange Server 5.0 was released on May 23, 1997,which introduced the new Exchange Administrator console, as well as opening up "integrated" access to SMTP-based networks for the first time. Unlike Microsoft Mail ,Exchange Server 5.0 could, with the help of an add-in called the Internet Mail Connector, communicate directly with servers using SMTP. Version 5.0 also introduced a new Web-based e-mail interface called Exchange Web Access, which was re branded as Outlook Web Access in a later Service pack.

Exchange Server 5.5

Exchange Server 5.5 was introduced November 1997, was sold in two editions, Standard and Enterprise. They differ in database store size, mail transport connectors and clustering capabilities.The Standard Edition includes the Site Connector, MS Mail Connector, Internet Mail Service, and Internet News Service , as well as software to interoperate with cc:Mail, Lotus Notes and Novell GroupWise. The Standard Edition had the same 16 GB database size limitation as earlier versions of Exchange Server, while the Enterprise Edition had an increased limit of 16 TB. 

Exchange 2000 Server

Exchange 2000 Server v6.0, released on November 29, 2000, overcame many of the limitations of its predecessors. For example, it raised the maximum sizes of databases and increased the number of servers in a cluster from two to four. However, many customers were deterred from upgrading by the requirement for a full Microsoft Active Directory infrastructure to be in place, as unlike Exchange Server 5.5, Exchange 2000 Server had no built-in Directory Service, and had a dependency upon Active Directory.

 Exchange Server 2003

           Exchange Server 2003 v6.5, debuted on September 28, 2003. Exchange Server 2003  Service Pack 2 can be run on Windows 2000 Server (only if Service Pack 4 is first installed) and 32-bit Windows Server 2003, although some new features only work with the latter. Like Windows Server 2003, Exchange Server 2003 has many compatibility modes to allow users to slowly migrate to the new system. This is useful in large companies with distributed Exchange Server environments who cannot afford the downtime and expense that comes with a complete migration.

     Filtering methods are added here these are

               --Connection filtering 

               --Recipient filtering 

               --Sender ID filtering 

               --Intelligent Message Filter

Exchange Server 2007

            Exchange Server 2007  Service Pack 3 was released on November 30, 2006, to business customers as part of Microsoft's roll-out wave of new products. It includes new clustering options, 64-bit support for greater scalability, voice mail integration, better search and support for Web services, better filtering options, and a new Outlook Web Access interface. Exchange 2007 also dropped support for Exchange 5.50 migrations, routing groups, admin groups, Outlook Mobile Access, X.400, and some API interfaces, amongst other features.

      New features

• Protection: anti-spam, antivirus, compliance, clustering with data replication, improved security and encryption
• Improved Information Worker Access: improved calendaring, unified messaging, improved mobility, improved web access
• Improved IT Experience: 64-bit performance & scalability, command-line shell & simplified GUI, improved deployment, role separation, simplified routing
• Exchange Management Shell: a new command-line shell and scripting language for system administration (based on Windows PowerShell).
• "Unified Messaging" that lets users receive voice mail, e-mail, and faxes in their mailboxes, and lets them access their mailboxes from cell phones and other wireless devices. Voice commands can be given to control and listen to e-mail over the phone.
• Increased the database maximum size limit. Database size is now limited to 16TB per database[21]
• Increased the maximum number of storage groups and mail databases per server, to 5 each for Standard Edition (from 1 each in Exchange Server 2003 Standard), and to 50 each for Enterprise Edition (from 4 groups and 20 databases in Exchange Server 2003 Enterprise).
• You can configure Outlook Anywhere (formerly known as RPC over HTTP) to provide external access to Microsoft Exchange Server 2007 for your clients.

Exchange Server 2010

             Exchange Server 2010 was released on May, 2009,Microsoft reached the RTM (Release To Manufacturing) milestone forExchange Server 2010,Exchange Server 2010 (currently at Service Pack 2) is available in two server editions; Standard edition and Enterprise edition.

Exchange Online

           Microsoft Exchange Online is an email, calendar and contacts solution delivered as a cloud service, hosted by Microsoft. It is essentially the same service offered by hosted Exchange providers and it is built on the same technologies as Microsoft Exchange Server. Exchange Online provides end users with a familiar email experience across PCs, the Web and mobile devices, while giving IT administrators or small businesses and professionals web-based tools for managing their online deployment.

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