www.tauseef.org is a non-profit blog. The intended purpose of this blog is to provide free information about Information Technology to help students, IT Professionals, System Engineers, Network Engineers, Administrators and others.
The information provided in this blog is for personal use and is strictly prohibited for commercial use.
All the given information and links are downloaded from the internet for your help only. We are not responsible for any information given in the blog. We work hard to make sure all information provided on https://www.tauseef.org is accurate, up-to-date and complete. However, the information and materials may contain errors or inaccuracies, including both typographical and substantive errors.
We provide links to external websites, but we do not have or maintain control over the content of those websites. In particular, websites to which we link may request your personal and/or financial information. We are not responsible for other sites' content, information collection practices, or use of the information they collect.

Wednesday, December 25, 2013

OSI = Open Systems Interconnection

December 25, 2013 1 comment

The OSI Reference Model

It’s simply a model that explain how computers will communicate with each other.

It’s developed by ISO (International Organization for Standardization).

In theoretical terms it helps you understand how networks and network protocols work.

The model has 7 layers, where each layer communicates directly with its adjacent layers.

Layer 7: Application Telnet, HTTP, DNS, FTP etc

Layer 6: Presentation Character code translation, Encryption-decryption, compression

Layer 5: Session Half-Duplex, Full-Duplex

Layer 4: Transport TCP and UDP

Layer 3: Network This is where routers operate. Anything regarding the TCP/IP protocol happens here. Think IP Address, subnet masks, default gateways etc.

Layer 2: Data Link This is where switches operate.

Layer 1: Physical This is the physical stuff connecting computers together (cables, nic, hubs, Ethernet cable, serial, modems etc etc).

Click here to know about TCP/IP Model

Download the Evaluation: Windows Server 2012 R2

December 19, 2013 No comments

Download the Evaluation: Windows Server 2012 R2

Live Migration improvements. Compression during live migration will reduce the time to move the VMs to another server , this feature is the default option on Windows 2012 R2 and it will be a good option when we have some bandwidth limitations. Obviously this feature introduces more workload to the CPU in the servers.

Shared VHDX. In this release Hyper-V will be guest clustering with shared VHDX using commodity storage, additionally it would be resize even when the VM is still running.

Hyper-V replica. This version introduces a third datacenter in the replication scenarios where we can change the replica frequency.

Export and Clone of VMs. Now it is possible to clone or export a running VM from System Center Virtual Machine Manager R2.

Dynamic Memory support for Linux. It has the ability to dynamically expand the amount of memory available to a running VM.

Gen2 VMs. Windows 2012 R2 introduces this feature removing all the legacy, BIOS-based functionality of a traditional VM, some of the benefits will be reduce the size of the VMs and eliminate some of the overhead of legacy BIOS-based. Of course traditional Gen1 will be available too.

Automated storage tiering. Now you can configure SSD drives to be prioritized for application where the latency is very important or use slower disks for applications with less workload.

Storage Quality of Services QoS. Enable consistent SLA delivery and will be configurable while the VM is running.

Update from Windows 8.1 Preview to Windows 8.1

December 19, 2013 No comments

http://windows.microsoft.com/en-in/windows-8/update-from-preview

The preview is no longer available for download. You must install the final version of Windows 8.1 or Windows RT 8.1 before January 2014 when the license for the preview will expire. If you've been using the preview, you should update to the final edition as soon as possible to avoid an interruption in using your PC.

Software Downloads

December 19, 2013 No comments

http://filehippo.com/software/networking/

Planning to take a Microsoft or Cisco exam ?

December 18, 2013 No comments

Check ExamCollection!

Here you can download free practice tests for such certifications as MCSE, MCDBA, MCSD, A+, Network+,Security+, CCNA, CCNP, and so on.

http://www.examcollection.com/

IT RESOURCES

December 17, 2013 4 comments

https://drive.google.com/folderview?id=0B3Wc36lYsNS5dnItbzI3TjVyQkU&usp=sharing

Office 365

November 10, 2012 No comments

A new Microsoft Office has arrived: Office 365. It is Office transformed into a powerful service that keeps you securely connected to all your personal documents, notes, and presentations. It comes with all the things you know and love about Office, but it´s also different from the version of Office you have today in a few exciting ways.

Link - Click Here

"Stunning" start for Windows 8

November 03, 2012 1 comment

Microsoft chief executive Steve Ballmer on Tuesday said the Windows 8 operating system was off to a "stunning" start with four million upgrades downloaded since its release on October 26.

"In just the last three days, we have sold four million Windows 8 upgrades," Ballmer said while kicking off a BUILD Conference for developers at the software giant's headquarters in Redmond, Washington.

"The level of embrace from enthusiasts is very, very high."

Ballmer added that tens of millions of businesses have also switched to the latest version of Windows.

Analysts have depicted Windows 8 as a bold bet for Microsoft since it dramatically changed the long-familiar user interface to adapt to touch-screen mobile devices increasingly popular in modern lifestyles.

"The level of enthusiasm seen for the new products has really been stunning," Ballmer told the thousands of developers at the sold-out event.

Globally popular one-to-many text messaging service Twitter and online file sharing hit Dropbox are among applications being tailored to Windows 8, Ballmer told third-pary software developers at the gathering.

Microsoft kicked off sales of its revamped Windows 8 system and Surface tablet Friday as it ramped up efforts to compete in a market shifting rapidly from PCs to mobile devices.