CompTIA A+ Certification Core 1 (220-1101) - Magnetic Disk Drives

The video tutorial provides an in-depth look at hard disk drives (HDDs), covering their components, such as platters and read-write heads, and explaining how data is stored magnetically. It discusses the evolution of HDDs in terms of physical sizes and storage capacities, from early models with 20 megabytes to modern drives exceeding 16 terabytes. The tutorial also explains the communication languages used by HDDs, focusing on Advanced Technology Attachment (ATA) and its evolution from Parallel ATA (PATA) to Serial ATA (SATA). It highlights the physical connectivity of SATA drives, including power and data connections, and introduces eSATA for external devices. Finally, the video covers system setup for HDDs and the significance of revolutions per minute (RPM) in classifying mechanical drives.

What is the primary function of the read/write head in a hard disk drive?

• To increase the speed of the drive

• To store data using electricity

• To read and write data using magnetism

• To physically touch the platters

Which of the following sizes is NOT a common physical size for hard disk drives?

• 4 1/2 inch

• 3 1/2 inch

• 1.8 inch

• 2 1/2 inch

What does ATA stand for in the context of hard disk drives?

• Analog Transmission Adapter

• Automatic Transfer Algorithm

• Advanced Transfer Attachment

• Advanced Technology Attachment

Which connector is used for data transfer in a SATA drive?

• The square connector

• The smaller connector

• The round connector

• The larger connector

What is the purpose of an eSATA connection?

• To connect internal drives

• To increase drive speed

• To reduce power consumption

• To connect external devices

How is the efficiency of mechanical hard drives typically classified?

• By their size

• By their weight

• By their color

• By their RPM

What does the term 'Barracuda 7200' refer to in the context of hard drives?

• A brand of hard drive

• A type of data connector

• A 7200 RPM hard drive

• A type of external drive