Information and Communication Technology: Storage Devices and Media Quiz
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Information and Communication Technology: Storage Devices and Media Quiz

Test your knowledge on storage devices and media including magnetic media and storage devices, optical media, solid-state media, and the future of storage devices. Explore concepts such as the history of magnetic media, properties of magnetism, and advancements in electronic data storage.

Created by
@InnovativeDubnium

Questions and Answers

What is the reason Blu-ray discs can store up to five times more data than normal DVDs?

They use a sandwich of two 0.6 mm thick disks

How does the data transfer rate of a Blu-ray disc compare to that of a DVD?

Blu-ray has a faster data transfer rate

Why do Blu-ray discs automatically come with a secure encryption system?

To prevent piracy and copyright infringement

How many hours of high definition movies can be stored on a dual-layer Blu-ray disc?

<p>4.5 hours</p> Signup and view all the answers

What is the storage capacity of a single-layer Blu-ray disc?

<p>27 GB</p> Signup and view all the answers

How does the thickness of single-layer Blu-ray discs compare to that of normal DVDs?

<p>Both use a 1.2 mm thick disk</p> Signup and view all the answers

What type of head in the optical drive moves to the start of the track when the disk spins?

<p>Optical head</p> Signup and view all the answers

How are CDs/DVDs different from HDDs in terms of data access?

<p>CDs/DVDs store data in sectors, unlike HDDs.</p> Signup and view all the answers

What is the depth of the pits where data is stored on a CD/DVD compared to the wavelength of the laser light used?

<p>About 20% of the wavelength</p> Signup and view all the answers

Why is a red laser used to read and write data on a CD/DVD?

<p>To match the original laser wavelength</p> Signup and view all the answers

What happens to the wavelength of reflected laser light compared to the original laser light when reading CD/DVD discs?

<p>It slightly changes causing destructive interference</p> Signup and view all the answers

What is a major disadvantage of CD-R and DVD-R?

<p>Cannot be recorded over if an error occurs</p> Signup and view all the answers

In what aspect are CD-RW and DVD-RW less wasteful than CD-R/DVD-R?

<p>Files/data can be added at a later stage</p> Signup and view all the answers

What is a common use of CD-RW and DVD-RW?

<p>Backing up files and data</p> Signup and view all the answers

Why are CD-ROM and DVD-ROM classified as read-only memory?

<p>They can only be read and not written over</p> Signup and view all the answers

What is a disadvantage of CD-RW and DVD-RW in terms of data security?

<p>Possible to accidentally overwrite data</p> Signup and view all the answers

How do CD-RW and DVD-RW differ from CD-R and DVD-R in terms of reuse?

<p>CD-R/DVD-R can be recorded over many times</p> Signup and view all the answers

What is a unique feature of Blu-ray discs that distinguishes them from DVDs?

<p>Six-layer technology for increased storage capacity</p> Signup and view all the answers

Which optical media technology has the smallest track pitch among CD, DVD, and Blu-ray?

<p>DVD</p> Signup and view all the answers

What is a major advantage of using Blu-ray discs for data storage?

<p>Fast data access speed</p> Signup and view all the answers

Why might the introduction of HD DVD players reduce the advantages of using Blu-ray discs?

<p>HD DVD players have limited storage capacity compared to Blu-ray</p> Signup and view all the answers

Which device can use Blu-ray technology for backing up hard drives?

<p>Computers</p> Signup and view all the answers

What is a disadvantage associated with using Blu-ray discs for storing video content?

<p>Possible encryption problems related to piracy prevention</p> Signup and view all the answers

What is the advantage of magnetic tape over hard disk drives (HDDs)?

<p>No need to read all the previous data before accessing the required data</p> Signup and view all the answers

What is the main disadvantage of magnetic tape storage?

<p>Affected by magnetic fields resulting in data corruption</p> Signup and view all the answers

How do hard disk drives (HDDs) differ from magnetic tape drives in terms of data access?

<p>Data is read directly without needing to read earlier data first</p> Signup and view all the answers

What is the main advantage of portable hard disk drives over fixed hard disk drives?

<p>Can be used to transfer files between computers</p> Signup and view all the answers

Which statement about optical media is true?

<p>Relies on the properties of laser light for reading and writing data</p> Signup and view all the answers

Why are magnetic tapes still used in large industrial or university computers?

<p>To store huge amounts of data at a lower cost per byte</p> Signup and view all the answers

What feature of hard disk drives allows them to have faster data access times compared to magnetic tape drives?

<p>Direct access to required data without reading earlier data</p> Signup and view all the answers

Which device uses concentric circular tracks and sectors for storing data?

<p>Hard disk drives (HDDs)</p> Signup and view all the answers

Why are magnetic tapes considered ideal for long-term archiving of data?

<p>Because they have huge storage capacities and stability over time</p> Signup and view all the answers

Which statement accurately describes the file allocation table (FAT) in hard disk drives?

<p>Helps locate free sectors when storing new data on HDDs.</p> Signup and view all the answers

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