Disaster Recovery and Data Backup Concepts

The video tutorial by Tech G covers business continuity concepts, focusing on fault tolerance and disaster recovery. It explains fault tolerance as a system's ability to respond to failures, emphasizing replication and redundancy. Various data backup methods, including full, differential, and incremental backups, are discussed. The tutorial also compares backup storage options like cloud and on-site storage. Contingency planning and disaster recovery strategies, including hot, warm, and cold sites, are detailed to ensure IT continuity during disruptions.

What is the primary goal of fault tolerance in IT systems?

• To reduce system costs

• To enhance user experience

• To ensure system availability during failures

• To improve system performance

Which RAID level provides both data mirroring and striping using four devices?

• RAID 0

• RAID 10

• RAID 4

• RAID 5

Which RAID level is known for striping data across two drives but offers no redundancy?

• RAID 1

• RAID 5

• RAID 0

• RAID 10

What type of backup only saves files that have changed since the last full or incremental backup?

• Full backup

• Mirror backup

• Differential backup

• Incremental backup

Which backup method involves copying files to another location in such a way that different versions of the same file can be restored?

• File history

• File compression

• File copying

• File synchronization

What is a key disadvantage of on-site backups in the event of a natural disaster?

• They require more storage space

• They are more expensive

• They are harder to access

• They can be lost or damaged

Which type of contingency plan site is the least expensive to maintain but takes the longest to set up during a disaster?

• Hot site

• Warm site

• Cold site

• Backup site

What is the primary focus of disaster recovery in IT?

• Protecting an organization from significant effects of negative events

• Reducing operational costs

• Enhancing user experience

• Improving system performance

Which of the following is NOT a recommended action to ensure quick data restoration?

• Using the fastest local or network connections

• Migrating backups on slower media to faster media

• Restoring all data regardless of current need

• Storing backups on USB 3.1 generation 1 drives

What should be prioritized first during data restoration in a disaster recovery plan?

• Non-critical files

• Old data

• Key assets

• Historical information