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FDDI - Failure Recovery ?

Posted By :Shashi Ray     Posted Date :March 31, 2010    Points :10   Category :Networking 
1. Wrapping Process - Modify the structure of the network to recover from failure.

(A)Recovers network connectivity on failure of FDDI station .
(B)Recovers network connectivity on failure of cables between any two FDDI stations.

2. Optical Bypass switch - Maintain the network connectivity by providing an optical connection that bypasses the failed station

You can also find related Interview Question to FDDI - Failure Recovery ?  below: 

How session layer in OSI model is responsible for Synchronisation and recovery?

  
Session layer creates certain check points while transmitting volumes of data in a sequence. When there is a problem in the transmission in the middle of any bulk of data, transmission will take place from the check point where it was left. This function of Session layer is called Synchronisation and recovery. (More...)

Synchronisation and Recovery in OSI model happens in which layer?

  
Synchronisation and Recovery in OSI model happens in Session layer. Session layer is also responsible for Token Management. (More...)

Fiber Distributed Data Interface(FDDI)?

  
Provides high performance and multiple stations networking
Widely used in Metropolitan Area network
Based on token ring architecture (More...)

FDDI stations?

  
1. Single-Attached Station - Connected through a single connector called S-port.

2. Dual-Attached Station - Connected through A-port and B-port . (More...)

FDDI concentrators?

  
1. Single-Attached Concentrator - Connected to the FDDI network through a single connector.

2. Dual-Attached Concentrator - Connected to the FDDI network through A-port and B-port. (More...)

FDDI - Devices?

  
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2. Every FDDI device requires two connectors to support two rings .

3. Using fiber optic cabling, FDDI segments could reach up to two kilometers between systems, with a maximum ring size of 100 kilometers . (More...)

what is the difference between restore and recovery?

  
Restore : Copying the file from the backup overwriting the existing database files

Recovery : Applying the changes to the database till point of failure.These changes are recorded in online redolog and archivelog(which are the backups of redolog) files (More...)

What are the things we have to follow when switching from the SIMPLE recovery model to the FULL or BULK-LOGGED recovery model ?

  
1. Once we complete the switching to the FULL or BULK-LOGGED recovery model, we have to take a full or differential database backup to start the log chain.

2. Then only it takes effect after the first data backup.

3. Schedule regular log backups and update your restore plan accordingly to maintain high-availability/Disaster recovery
(More...)

What are the things we have to follow when swithing from FULL or BULK-LOGGED to SIMPLE recovery model ?

  
1. Before switching from FULL or BULK-LOGGED recovery model, We have to take LOG Backup immediately before switching to SIMPLE.

2. It will help us to recover Point-In-Time(If any)

3. Finally, we can switch to SIMPLE recovery model. (More...)

What are the Methods of Backup and Recovery in SharePoint 2010?

  
Microsoft SharePoint Server 2010 provides a broad range of levels for performing backups, including the entire farm, farm configuration information, site collections, subsites, or lists.

SharePoint Server 2010 uses two different tools to configure backup and recovery.

1. Central Administration : Central Administration provides a user interface where SharePoint Administrators will be prompted via menu structures to select the information that needs to be backed up. (see the Image below)


2. Windows PowerShell : Windows PowerShell is a command line tool that provides SharePoint administrators a way to perform backup and recovery with additional options such as file compression or working with SQL snapshots.

Listed below are a few of the benefits available when working with Windows PowerShell:

. Windows PowerShell scripts can be developed and scheduled (with Windows Task Scheduler), whereas Central Administration is used for single-use backups and restores.

. Windows PowerShell has the advantage of running against SQL snapshots instead of the production database. One of the parameters of the Windows PowerShell command will cause a SQL snapshot to be generated, and then Windows PowerShell will run the action against the snapshot instead of the production database. This will reduce the resource impact of the backup operation on the production environment.

. With Windows PowerShell, SharePoint administrators will have more granular control of options for the backup or restore. (More...)


Q. What are the Methods of Backup and Recovery in SharePoint 2010?

  
Ans. Microsoft SharePoint Server 2010 provides a broad range of levels for performing backups, including the entire farm, farm configuration information, site collections, subsites, or lists.

SharePoint Server 2010 uses two different tools to configure backup and recovery.

1. Central Administration : Central Administration provides a user interface where SharePoint Administrators will be prompted via menu structures to select the information that needs to be backed up. (see the Image below)


2. Windows PowerShell : Windows PowerShell is a command line tool that provides SharePoint administrators a way to perform backup and recovery with additional options such as file compression or working with SQL snapshots.

Listed below are a few of the benefits available when working with Windows PowerShell:

. Windows PowerShell scripts can be developed and scheduled (with Windows Task Scheduler), whereas Central Administration is used for single-use backups and restores.

. Windows PowerShell has the advantage of running against SQL snapshots instead of the production database. One of the parameters of the Windows PowerShell command will cause a SQL snapshot to be generated, and then Windows PowerShell will run the action against the snapshot instead of the production database. This will reduce the resource impact of the backup operation on the production environment.

. With Windows PowerShell, SharePoint administrators will have more granular control of options for the backup or restore.

For more info See : Windows PowerShell Tutorial



(More...)

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