Practice Chapter 3.2 Optical Media

Felix and Adit are discussing the different types of storage media they use for their school projects. Adit mentions he prefers using CDs, DVDs, and Blu-ray discs for their durability. What are the main types of optical media they are referring to?

• Flash drives

• Hard drives

• Magnetic tapes

• CDs, DVDs, Blu-ray discs

Answer explanation

The main types of optical media include CDs, DVDs, and Blu-ray discs, which use laser technology to read and write data. Flash drives, hard drives, and magnetic tapes are not optical media; they use different storage technologies.

Adit and Cinta are discussing the differences between CDs and DVDs while preparing for a movie night. Adit claims that a CD has a higher resolution than a DVD, while Cinta argues that CDs can store more video content than DVDs. However, they both agree that a CD differs from a DVD in storage capacity and primary use; CDs are for audio, while DVDs are for video and data. What is the correct statement about the differences between CDs and DVDs?

• A CD has a higher resolution than a DVD.

• CDs can store more video content than DVDs.

• A CD differs from a DVD in storage capacity and primary use; CDs are for audio, while DVDs are for video and data.

• DVDs are primarily used for audio playback.

Answer explanation

A CD primarily stores audio and has a lower storage capacity compared to a DVD, which is designed for video and data. This distinction in purpose and capacity is the key difference between the two formats.

During a movie night, Fael and Audey were discussing different formats for watching films. Fael mentioned that he prefers a certain technology that allows for high-definition video and data storage using a blue-violet laser. What is this technology?

• A format for low-definition video storage

• Blu-ray technology is an optical disc format for high-definition video and data storage using a blue-violet laser.

• A streaming service for movies

• A type of magnetic storage device

Answer explanation

Blu-ray technology is specifically designed for high-definition video and data storage, utilizing a blue-violet laser, which allows it to hold more data than standard DVDs. This makes option B the correct choice.

Adit is planning to burn some music albums onto CDs for his collection. He wants to know the data storage capacity of a standard CD. What is it?

• 500 MB

• 700 MB

• 1 GB

• 4.7 GB

Answer explanation

A standard CD typically has a data storage capacity of 700 MB, which is the most common size for audio CDs. The other options exceed or do not match the standard capacity.

Adit and Mason are discussing the durability of different storage types for their school project. Adit believes that optical media generally has a longer lifespan than magnetic storage but can be less durable than solid-state drives. Mason, however, thinks that optical media has the shortest lifespan among all storage types. Who is correct?

• Adit is correct; optical media generally has a longer lifespan than magnetic storage but can be less durable than solid-state drives.

• Mason is correct; optical media has the shortest lifespan among all storage types.

• Optical media is more durable than solid-state drives and magnetic storage.

• Optical media is equally durable as magnetic storage but less durable than tape storage.

Answer explanation

The correct choice highlights that optical media typically lasts longer than magnetic storage, but is not as durable as solid-state drives, which are more resistant to physical damage and wear.

During a school project, Albert and Jillian decided to explore the various uses of optical storage devices. They learned that these devices are commonly used for data backup, software distribution, and media storage. What are some common uses of optical storage devices?

• Data encryption

• Common uses of optical storage devices include data backup, software distribution, and media storage.

• Web hosting

• Network routing

Answer explanation

Optical storage devices are commonly used for data backup, software distribution, and media storage due to their ability to store large amounts of data securely and access it easily, making this answer the most accurate.

While preparing for their school project, Albert and Putri discovered some CD/DVD optical disks in the library. They wanted to understand more about these disks. What are the characteristics of CD/DVD optical disks?

• CD/DVD optical disks are made of glass and are not portable.

• CD/DVD optical disks are circular, use laser technology for data reading/writing, have varying storage capacities, are made of polycarbonate, and are portable.

• CD/DVD optical disks are square-shaped.

• CD/DVD optical disks use magnetic technology for data storage.

Answer explanation

The correct choice accurately describes CD/DVD optical disks as circular, portable, made of polycarbonate, and using laser technology for data reading/writing, with varying storage capacities. The other options contain inaccuracies.

Melvin is considering using CD/DVD optical disks for his data storage needs. What are the advantages of using CD/DVD optical disks?

• Limited storage capacity

• Incompatibility with modern devices

• Advantages of using CD/DVD optical disks include portability, durability, cost-effectiveness, and reliable data backup.

• High susceptibility to scratches

Answer explanation

The correct choice highlights the advantages of CD/DVD optical disks, such as portability, durability, cost-effectiveness, and reliable data backup, which are key benefits compared to the other options listed.

During a group project, Melvin and Tory decided to use CD/DVD optical disks to store their data. However, they soon realized that there were some disadvantages to using these disks. What are the disadvantages of CD/DVD optical disks?

• Universal compatibility

• Limited storage capacity, physical damage susceptibility, slower speeds, hardware dependency, and potential obsolescence.

• Fast data transfer

• High durability

Answer explanation

The correct choice highlights key disadvantages of CD/DVD optical disks, including limited storage capacity, susceptibility to physical damage, slower data transfer speeds, reliance on specific hardware, and the risk of becoming obsolete.

During a movie night, Fael and Melvin are discussing the advantages of Blu-ray discs over DVDs. What are the advantages they might mention?

• No support for interactive features

• Higher storage capacity, better video/audio quality, support for HD/4K resolutions.

• Limited to standard definition only

• Lower storage capacity than CDs

Answer explanation

Blu-ray discs offer higher storage capacity than DVDs, allowing for better video and audio quality, as well as support for HD and 4K resolutions, making them superior for high-definition content.