Offline storage: CDs, DVDs, USBs

• What is offline storage?

  Data kept on physical devices
• How does offline storage differ from online storage?

  Offline storage uses physical devices, online uses cloud
• What do you need to access data in offline storage?

  No internet connection required
• What is the storage capacity range of a DVD?

  4.7 to 8.5 gigabytes
• What does CD stand for?

  Compact Disc
• How does a DVD store data compared to a CD?

  It uses the same principle but has higher capacity
• What does DVD stand for?

  Digital Versatile Disc
• What are the key features of DVDs?

  • Higher storage capacity than CDs
  • Can hold 4.7 to 8.5 gigabytes
  • Suitable for movies and larger software
  • Slower data transfer compared to USBs
• How many songs can a CD typically store?

  Around 70 songs
• What is a USB flash drive?

  A portable storage device for data
• How do DVDs compare to USBs in data transfer speed?

  They transfer data slower than USBs
• Why are DVDs suitable for films and larger programs?

  They can hold much more information than CDs
• How does a CD store data?

  Using tiny pits on its surface
• How do CDs compare to USBs in data transfer speed?

  CDs are relatively slow compared to USBs
• How much data can a CD hold?

  About 700 megabytes
• What are CDs ideal for storing?

  Music or software that doesn't need updates
• How does a USB flash drive store data?

  It uses flash memory to store data digitally
• Why would you use a USB flash drive?

  To move files easily between devices
• What are the storage capacities of USBs compared to CDs or DVDs?

  USBs have much higher capacities
• What is the range of USB storage capacities?

  From a few gigabytes to several terabytes
• What is a key feature of USBs regarding internet usage?

  You don't need the internet to use it
• How is a USB compared to a lunchbox?

  A USB carries files like a lunchbox carries food
• What are the main features of USBs?

  • Portable storage for files
  • No internet required for use
  • Larger storage capacity than CDs/DVDs
  • Fast file transfer speeds
• What is the name of the USB 3.0 connector type shown in the image?

  A Female
• What are the different USB 2.0 connector types shown in the image?

  • A Female
  • A Male
  • B Male
  • Micro B Male
  • Mini-A
  • Mini-B
  • Mini-4 pin
• What analogy is used to describe the storage capacity of a USB?

  It's like having a big toy box for toys
• How do USBs compare to CDs and DVDs in terms of transfer speeds?

  USBs have faster transfer speeds than CDs and DVDs
• What does USB stand for?

  Universal Serial Bus
• How can you use a USB for schoolwork?

  You can take your homework to school with it
• How does a USB compare to CDs and DVDs in terms of storage?

  A USB can hold more files than CDs or DVDs
• How do DVDs compare to CDs in dimensions?

  Similar to CD
• What are the differences in connectors between CDs, DVDs, and USBs?

  • CDs: No ports, read-only
  • DVDs: No ports, read-only
  • USBs: Multiple types (USB 2.0 and 3.0)
• What is the primary dimension of a CD?

  Large disc
• How do the dimensions of CDs and DVDs compare to USBs?

  • CDs: Large disc
  • DVDs: Similar to CDs
  • USBs: Small, stick-like
• What is the storage lifespan of a DVD?

  15-30 years
• What types of connectors do USBs have?

  A, B, Micro B, Mini A
• What is the capacity of a CD?

  700 MB
• What security feature can USBs use to prevent unauthorized access?

  Password protection
• What is a common risk for all offline storage types?

  Loss or theft
• What are the environmental impacts of different offline storage devices?

  • CDs and DVDs: Higher carbon footprints due to plastics and metals; resource use in packaging.
  • USBs: Lower energy consumption in production; more flexible.
  • Recycling: Essential for reducing landfill waste.
  • Reusability: Enhances sustainability.