CompTIA A+ Certification Core 1 (220-1101) - RAID

The video tutorial introduces RAID, a method of organizing disk drives to enhance speed and data redundancy. It covers various RAID levels, including RAID 0 (striping), RAID 1 (mirroring), RAID 5 (striping with parity), and RAID 6, explaining their benefits and drawbacks. The tutorial also discusses advanced RAID configurations like RAID 10 and RAID 0+1, and how RAID can be implemented through hardware or software. Proprietary RAID systems are briefly mentioned.

What are the two main benefits of RAID?

• Speed and data redundancy

• Cost reduction and speed

• Data redundancy and cost reduction

• Ease of use and speed

What is the primary advantage of RAID 0?

• Data redundancy

• Ease of setup

• Increased speed

• Cost efficiency

What is a major disadvantage of RAID 0?

• It requires more than two drives

• It is very slow

• It offers no data safety

• It is expensive

How does RAID 1 ensure data safety?

• By using parity bits

• By mirroring data on two drives

• By compressing data

• By striping data across multiple drives

What is the minimum number of drives required for RAID 5?

• Four

• Five

• Three

• Two

What is the key advantage of RAID 6 over RAID 5?

• It is faster

• It allows for the loss of up to two drives

• It requires fewer drives

• It is cheaper

What is RAID 10 a combination of?

• Mirroring and compression

• Mirroring and parity

• Striping and parity

• Striping and mirroring

What is a potential downside of RAID 0+1?

• It requires a lot of drives

• It is very slow

• Losing one drive from each side can cause data loss

• It offers no redundancy

How can RAID be implemented?

• Through cloud services

• Through both hardware and software

• Only through software

• Only through hardware

What is a characteristic of proprietary RAID systems?

• They are open-source

• They are standardized

• They are less efficient

• They have unique efficiencies