Google challenges Apple with video chat service - Telegraph

Google challenges Apple with video chat service - Telegraph

iPad 2 officially launched in India find feature and price details

iPad 2 Putting an end to the suspense, Apple announced that its second-generation tablet PC, iPad 2, will be available in India from April 29, Friday, just over a month after the company started selling the updated version of its popular tablet device in the United States.

Some feature of  Apple ipad 2 is 33 percent slimmer then the previous version,and is 15 percent lighter as opposed to its previous interation. The device is having 9.7 inch of LED-backlit LCD screen, a front-facing VGA camera and a rear-facing camera. it has been powered by the dual-core A5 processor and offers enriching experiences through its applications such as FaceTime and PhotoBoot iTunes iMovies etc.

The device, priced between Rs. 29,500 and Rs. 46,900, will be available through authorized resellers from 9 a.m. local time on Friday, Apple said in a statement.Pricing (including VAT)16GB model: Rs. 29,50032GB model: Rs. 34,50064GB model: Rs. 39,500iPad 2 with Wi-Fi + 3G will be available for a maximum retail price of Rs 36,900 for the 16GB model, Rs 41,900 for 32GB model and Rs 46,900 for 64 GB model.
Apple is not having to many of its stores in india so you can go to the prmium resellers of Apple Products- Croma, Vijaya Sales, Reliance iStore and eZone.

http://www.getcomputersolution.com/solution/ipad-2-india-price-features

Sony New Tablet PC S1, S2 With Android 3.0 Honeycomb.

Sony the Japanese Electronics and entertainment giant Sony launche its first tablet computer S1 and S2 the both tablet pc are equipped with Google's operating system known as Honeycomb.

The S1 looks like a direct competitor to the iPad, with a 9.4 inch (24 centimetre) screen, and front and rear cameras.The S1 features a Tegra 2 SoC and customized “Quick and Smooth” touch panel UI with “Swift” web browser. It can also be used as a remote control for Sony gear thanks to integrated infrared.

while the clamshell S2 recalls Nintendo's DS portable console but with dual 5.5 inch colour touchscreens in 1024 X 480 pixel display and can be folded so it fits in a jacket pocket or bag.
Sony said that both the tablets will have access to Sony’s Curiosity media service that offers both music and video streaming services and the PlayStation Suite, which will allow users to play first generation PlayStation games.The devices will also come with both 3G and 4G connectivity, Wi-Fi connuctivity,playstation certified,support DLNA and you can enjoy cloud based services and Equipped with  e-reader app, split keyboard and messaging displays for email and also support Remote access functionality with AV devices S1 uses infrared technology and works as universal remote controls for a variety of AV devices. Users can perform functions like turning on their TVs, changing the channel and adjusting the volume

All new features introduced in Microsoft Windows 2008 server

Some of the new feature of Microsoft Windows 2008 server

Hyper-V Live Migration

• Moves virtual machines between two hosts without interruption (slight performance drop)
• Uses the new Cluster Shared Volumes (CSV) file system within Failover Clustering in         Windows Server 2008 R2
• CSV volumes can only be used for the Live Migration feature
• Requires failover clustering of Windows Server 2008 R2

Event forwarding

This only works if you have Vista on the desktop. It allows clients to automatically forward their event logs to the server, making it easier to diagnose problems on remote machines.

Cluster Node Connectivity Fault Tolerance

• The CSV architecture supports dynamic I/O redirection (I/O can be rerouted within the failover cluster) for three types of failures:
• Failure of a cluster node connection to the shared storage between cluster nodes
• Failure of network connectivity for a cluster node
• Failure of a cluster node

Active Directory Rights Management Services (AD RMS).

This was available in Server 2003 but only as an add-on purchase. The new version adds new features to limit access to certain files.

Clean Service Shutdowns

usually in windows servers or window workstations, while shutting down the system it uses a    typical 20 second timer that will give 20 second time to all the services to shutdown. In this scenario, some services will exit with error because that service was working with the disk which requires a longer time to finish the work. Now in Windows 2008 Server, that 20-second countdown has been replaced with a service that will keep applications given the signal all the time they need to shut down, as long as they continually signal back that they’re indeed shutting down.

Other Hyper-V 2.0 features

• Support for 32 logical processor cores in a single virtual machine
• Hot add of VHD and pass-through disks
• Second Level Translation (SLAT): Support for Intel’s Enhanced Page Tables and AMD’s Nested Page Tables (improves performance, especially for large applications, due to better memory management; it also reduces the memory requirements for the Windows Hypervisor from approximately 5% to 1% of the total physical memory)
• Boot physical machines from .vhd files: Allows you to deploy Windows Server 2008 R2 to physical and virtual computers using the same .vhd files.

New password policies.

No longer is there a restriction of one password policy per domain.

Virtual Desktop Infrastructure (VDI)

• Desktop Virtualization is a new feature in Windows Server 2008 R2.

• Windows clients (XP, Vista, Windows 7) run on virtual machines on a centralized server
• VDI includes the following technologies: Hyper-V, Live Migration, System Center Virtual Machine Manager 2008, Microsoft Application Virtualization version 4.5 in Microsoft Desktop Optimization Pack (MDOP), and Vista Enterprise VECD licensing

Group Policy database.

Server 2008 adds a searchable database for group policy managers, so admins no longer have to track this manually.

RemoteApp & Desktop Connections (RAD)

RemoteApp was introduced with Windows Server 2008. It allows end-users to launch a single application on a remote server via RDP. Desktop Connections are common sessions on a Terminal Server.

• RAD control panel applet: Allows end-users to connect to RemoteApp programs and Remote Desktops
• Single management console for RemoteApp, Desktop Web Access, and Remote Desktop
• RemoteApp and Remote Desktop also work for standalone computers (non-domain members)
• New apps are automatically populated to users’ desktops and Web Access page
• Single sign-on (I guess only for domain members)
• Almost all Remote Desktop Services administrative tasks can now be scripted using PowerShell 2.0
• Profile cache quota and Group Policy caching speed up user logon
• Improved compatibility with Microsoft Installer (MSI); no need for “install mode” where users had to log off

Group Policy comments.

Now admins can add comments to explain what various Group Policy settings actually mean

Remote Desktop Services Gateway (formerly Terminal server Gateway) (improved)

• Silent Session Re-authentication: Ensures that changes to user profiles are enforced
• Secure device redirection: Device redirection settings are always enforced
• Pluggable Authentication: Allows corporations to use their own authentication and authorization technologies
• Idle & session timeout: Allows admins to disconnect idle sessions or limit the connection time
• Consent Signing support: Remote users have to give their consent to corporate terms and conditions
• Administrative messaging: Broadcast messages to remote users

Internet Information Services 7.5 (IIS)

• PowerShell provider for IIS 7 has more than 50 new cmdlets
• Administration Pack extensions: Database Manager (SQL Server management within IIS Manager), Configuration Editor (generate scripts with a GUI to automate administrative tasks), IIS Reports, Request Filtering (HTTP filtering, URL rewriting, etc.)
• One-click publishing in Visual Studio 10
• Web Deployment Tool (formerly MS Deploy): Deployment, management, and migration of Web applications, sites, and entire servers
• Configuration Tracing: track configuration changes to IIS and applications
• New performance counters
• .NET support for Server Core
• WebDav integration (was available before as a separate extension)
• URLScan 3.0 integration: restricts the types of HTTP requests (was available before as a separate extension)
• FTP server services: integrated in the IIS administration interface; new .NET XML-based *.config format; virtual host names for FTP sites; improved logging
• Integrated extensions: new kind of extensions that appear to be an integral part of IIS

RAD enhancements for third parties

• Support for Cascading Style Sheets (CSS) and XSL Transformations (XSLT) to customize the Web Access portal
• Support for protocols other than RDP
• Session broker extensibility: Policy (determines the proper farm or VM for a connection), Load Balancing (chooses the proper endpoint based on load), Orchestration (prepares a VM to accept RDP connections)

Basic configuration required for Installation of Windows 2008 server

Basic configuration required for Windows 2008 Installation

Windows Server 2008 R2 with SP1 System Requirements

Component	Requirement
Processor	Minimum: Single processor with 1.4 GHz (x64 processor) or 1.3GHz (Dual Core) Note: An Intel Itanium 2 processor is required for Windows Server 2008 R2 with SP1 for Itanium-Based Systems. To use RemoteFX, a SLAT-capable processor is required on the host.
Memory	Minimum: 512 MB RAM Maximum: 8 GB (Foundation) or 32 GB (Standard) or 2 TB (Enterprise, Datacenter, and Itanium-Based Systems)
Disk Space Requirements	Minimum: 32 GB or greater Note: Computers with more than 16 GB of RAM will require more disk space for paging, hibernation, and dump files
Display	Super VGA (800 × 600) or higher resolution monitor
Other	DVD Drive, Keyboard and Microsoft Mouse (or compatible pointing device), Internet access (fees may apply) Note: To use RemoteFX, at least one qualified GPU is required on the host.

Interview questions for windows 2003/2008, Active Directory,FSMO roles,Global catalog,Domain controller, forest

Question:-What is the family of Windows NT?

Windows NT Workstation (Desktop)

Windows NT 4.0 server (Server)

Windows NT4.0 Enterprise server (Server)

Question:-What is the family of Windows 2000?

Windows 2000 Professional (Desktop Operating System)

Windows 2000 Server (Server Operating System)

Window 2000 Advanced Server (Server Operating System)

Windows 2000 Data center Server (Server Operating System)

Question:- What is the family of Windows 2003 family?

Windows Server 2003, Web Edition

Windows Server 2003, Standard Edition

Windows Server 2003, Enterprise Edition

Windows server 2003, Data center Edition

Question:- What is the family of windows 2008 family?

Windows Server 2008 R2 Foundation

Windows Server 2008 R2 Standard

Windows Server 2008 R2 Enterprise

Windows Server 2008 R2 Datacenter

Windows Server 2008 R2 Web server

Windows HPC Server 2008 R2 Suite

Windows Server 2008 R2 for Itanium-Based Systems

Question:-What is the Difference between Desktop and Server?

Regular computers usually run some flavor of Windows, like XP or Vista. Macs of course run Mac software (OS X), and there are also open source desktop alternatives such as Linux.

Servers generally run more powerful operating systems that can handle networking, email, internet/intranet hosting, file sharing, databases, and more. Windows Server and Windows Small Business Server are quite popular in small and mid-size businesses. Mac offers OS X Server if you want to run your entire network on Macs.

The second major difference between computers and servers: better hardware. If a desktop goes down, it impacts a single person. If a server goes down, it can easily impact dozens, even hundreds of people at once. In server you can implement RAID at hardware and Software Raid fault tolerance and riddance.

Question: – What is the difference between a Workgroup and domain controller?

A workgroup is a distributed directory maintained on each computer with the workgroup with same workgroup name. A domain is a centralized directory of resources maintained on domain controllers and presented to the user through Active directory services so the user can get login from a single server.

Question: – What is a Stand-alone computer or server?

A computer that belongs to workgroup, not a domain is called a standalone server?

Question:- What is a Member server?

Member server is which belong to domain but do not contain a copy of the Active Directory data.

And it is not configured as a domain controller. A member server doesn’t store Active directory information and can’t authenticate users.  Member server can provide share resources such as share folder share Driver or Printers.

Question: -What is Active Directory?

Active Directory is a technology created by Microsoft that provides a variety of network services, and database that holds information about component locations, users, groups, passwords, security, Printers, computers, Group policy and other COM information. Some of this information is currently stored in the Registry, but will eventually (with Windows 2008) be moved to the Active Directory.

Question:-What roles does a Main Domain Controller will have by default?

By Default there are Five operation master roles :-

Schema maser

Domain Naming Master

PDC Emulator

Relative Identifier Master (RID)

Infrastructure Master

Question:- What are the roles an Additional Domain controller Will have by Default?

By default you cannot get any role. But if you want to assign any role you can transfer from master.

Question:- What are the roles a Main Child Domain Controller will have by default?

By default the FSMO roles the Child DC is having are

PDC Emulator

Relative Identifier (RID)

Infrastructure Master

Question:-Explain the FSMO roles and their activities?

Answer: The domain Operations Master Roles also known as FSMO roles, are the core foundations of the Active Directory infrastructure.

In each Active Directory domain we have five FSMO roles that can be assigned to one server or multiple servers.

These are the five FSMO Roles:

Schema Master

Controls updates and changes to our Active Directory schema.

The domain naming master domain controller controls the addition or removal of domains in the forest. This DC is the only one that can add or remove a domain from the directory. It can also add or remove cross references to domains in external directories. There can be only one domain naming master in the whole forest.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo schema

Domain Naming Master

Controls new addition and removal of domains in the AD forest.

The domain naming master domain controller controls the addition or removal of domains in the forest. This DC is the only one that can add or remove a domain from the directory. It can also add or remove cross references to domains in external directories. There can be only one domain naming master in the whole forest.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo name

Relative ID Master

Assigns security ID to each new object created in Active Directory like user, server, group, etc

The RID master is responsible for processing RID pool requests from all domain controllers in a particular domain. When a DC creates a security principal object such as a user or group, it attaches a unique Security ID (SID) to the object. This SID consists of a domain SID (the same for all SIDs created in a domain), and a relative ID (RID) that is unique for each security principal SID created in a domain.  Each DC in a domain is allocated a pool of RIDs that it is allowed to assign to the security principals it creates. When a DC’s allocated RID pool falls below a threshold, that DC issues a request for additional RIDs to the domain’s RID master. The domain RID master responds to the request by retrieving RIDs from the domain’s unallocated RID pool and assigns them to the pool of the requesting DC. At any one time, there can be only one domain controller acting as the RID master in the domain.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo rid

PDC Emulator

Acts as the default time server for the domain and performs time sync with other time servers if needed.

The PDC emulator is necessary to synchronize time in an enterprise. Windows 2000/2003 includes the W32Time (Windows Time) time service that is required by the Kerberos authentication protocol. All Windows 2000/2003-based computers within an enterprise use a common time. The purpose of the time service is to ensure that the Windows Time service uses a hierarchical relationship that controls authority and does not permit loops to ensure appropriate common time usage.

The PDC emulator of a domain is authoritative for the domain. The PDC emulator at the root of the forest becomes authoritative for the enterprise, and should be configured to gather the time from an external source. All PDC FSMO role holders follow the hierarchy of domains in the selection of their in-bound time partner.

In a Windows 2000/2003 domain, the PDC emulator role holder retains the following functions:

• Password changes performed by other DCs in the domain are replicated preferentially to the PDC emulator.
• Authentication failures that occur at a given DC in a domain because of an incorrect password are forwarded to the PDC emulator before a bad password failure message is reported to the user.
• Account lockout is processed on the PDC emulator.
• Editing or creation of Group Policy Objects (GPO) is always done from the GPO copy found in the PDC Emulator’s SYSVOL share, unless configured not to do so by the administrator.
• The PDC emulator performs all of the functionality that a Microsoft Windows NT 4.0 Server-based PDC or earlier PDC performs for Windows NT 4.0-based or earlier clients.

This part of the PDC emulator role becomes unnecessary when all workstations, member servers, and domain controllers that are running Windows NT 4.0 or earlier are all upgraded to Windows 2000/2003. The PDC emulator still performs the other functions as described in a Windows 2000/2003 environment.

At any one time, there can be only one domain controller acting as the PDC emulator master in each domain in the forest.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo pdc

Infrastructure Master

Makes sure all objects references are up to data on all domain controllers and if not replicates the data.

When an object in one domain is referenced by another object in another domain, it represents the reference by the GUID, the SID (for references to security principals), and the DN of the object being referenced. The infrastructure FSMO role holder is the DC responsible for updating an object’s SID and distinguished name in a cross-domain object reference. At any one time, there can be only one domain controller acting as the infrastructure master in each domain.

Note: The Infrastructure Master (IM) role should be held by a domain controller that is not a Global Catalog server (GC). If the Infrastructure Master runs on a Global Catalog server it will stop updating object information because it does not contain any references to objects that it does not hold. This is because a Global Catalog server holds a partial replica of every object in the forest. As a result, cross-domain object references in that domain will not be updated and a warning to that effect will be logged on that DC’s event log. If all the domain controllers in a domain also host the global catalog, all the domain controllers have the current data, and it is not important which domain controller holds the infrastructure master role.

To find out which server hold this role issue the following command:

dsquery server –hasfsmo infr

Question:-What are the roles must be on the same server?

Domain Naming Master and Global catalogue

Question:-What are the roles should not on the same Domain Controller?

Infrastructure Master and Global Catalogue

Note: If you have only one domain then you won’t get any problem even if you have both of them in the same server. If you have two of more domains in a forest then they shouldn’t be in the same server.

Question:-What is a Global Catalogue?

The global catalog is the set of all objects in an Active Directory Domain Services (AD DS) forest. A global catalog server is a domain controller that stores a full copy of all objects in the directory for its host domain and a partial, read-only copy of all objects for all other domains in the forest. Global catalog servers respond to global catalog queries.

Question:-How to check the above roles to which server they have assigned?

Install support tools from Widows server CD

At command prompt type “netdom quary fsmo”

Question:-How to start/stop a service from command prompt?

Open command prompt type

“Net start  service name”   (To start a service)

“Net Stop  service name”   (To stop a service)

Question:-What are the file system we have in windows?

FAT/FAT16/FAT32/NTFS 4.0 /NTFS 5.0

Question:- How to convert from FAT to NTFS?

Convert drive /fs:ntfs

Question:-What is a forest?

Collection of one or more domain trees that do not form a contiguous namespace. Forests allow organizations to group divisions that operate  independently but still need to communicate with one another.

All trees in a forest share common schema, configuration partitions and Global Catalog. All trees in a give forest trust each other with two way transitive trust relations

Question:- What is Domain?

A group of computers that are part of a network and shares a common directory and security policies. In Windows server 2008 a domain is a security boundary and permissions that are granted in one domain are not carried over to other domains.

Question:- What is a fully Qualified Domain name?

Hostname.domainname.com  is known as FQDN

Question:-How many types of partitions are there in Windows?

There are Two types of partitions there:-

Primary Partition

Extended Partition.

Question:-What is the difference between primary and secondary partition?

A Primary partition or system partition is one on which you can install the files needed to load an operating system.

Question:- How many partition can you create maximum. How many primary and how many extended?

Maximum we can create four partitions in basic disk. Among that we can create maximum One extended partition. You can create four primary partitions if you do not have extended.

Question:-What is a volume?

Disk Volume is a way of dividing your Physical Disk so that each section functions as a separate unit.

Question:-How many types of volumes are there?

There are 5 types of volumes

Simple

Spanned

Striped (also called RAID 0)

Mirror (also called RAID 1)

RAID 5 (also called striped volumes with parity)

Question:-What is the difference between partition and volume?

You have limitations on number of partitions.

You don’t have limitations on number of volumes.

You cannot extend the size of a partition.

You can extend the size of a volume.

Question:-what is active partition?

The partition in which your current Operating System boob files are there.

Question:- What is system volume and boot volume?

The system volume is the one in which your boot files are there.

Whatever partition is marked as active that partition is called system partition.

The boot volume is the one in which your system files are there.

Question:-What are Unicast, Multicast and Broad cast?

Unicast:           Just from one computer to one computer.

Multicast:         Those who ever register for a particular multicast group to those only.

Broadcast:       To all the computers.