site_logo

Previous Next


  1. ITF+ Practice Tests
  2. Network+ Practice Test
  3. Security+ Practice Exam
  4. A+ Lab Simulator

ITF+ Certification Cram Notes

2.0 Infrastructure

2.4 Compare and contrast common Internet service types

Fiber optic, cable, DSL, and wireless (RF, satellite, cellular) are all common types of Internet services. Here is a comparison of their features:

Fiber optic: Uses fiber optic cables to transmit data as light signals, providing very high speeds and low latency. It is more expensive to install than other types of services and is not available everywhere.

Cable: Uses coaxial cables to transmit data, providing relatively high speeds but with more latency than fiber. It is widely available in urban and suburban areas but can be affected by network congestion during peak usage times.

DSL: Uses existing telephone lines to transmit data, providing slower speeds than cable or fiber but more widely available in rural and remote areas. The distance from the telephone exchange can affect the speed and quality of the connection.

Wireless (RF): Uses radio frequencies to transmit data wirelessly through Wi-Fi routers or hotspots. Provides convenience and mobility, but can be affected by signal interference and range limitations.

Satellite: Uses satellite signals to transmit data, making it available in remote areas without access to other types of services. However, it can be affected by weather conditions and has high latency due to the distance the signal must travel.

Cellular: Uses cellular networks to transmit data, providing mobility and convenience through smartphones and mobile devices. Speed and reliability can vary depending on network coverage and signal strength.

2.5 Compare and contrast storage types

Volatile vs. non-volatile: Volatile storage is temporary and requires a constant power supply to maintain data, such as RAM. Non-volatile storage retains data even when power is turned off, such as hard drives or flash drives.

Local storage types:

  • RAM: Random Access Memory (RAM) is volatile memory that is used for temporary storage of data and running applications.

  • Hard drive: Hard drives are non-volatile storage devices that store data using magnetic disks that spin at high speeds. They can be either spinning disk drives or solid-state drives (SSDs).

    • Solid state vs. spinning disk: Solid-state drives use flash memory to store data and are faster and more durable than spinning disk drives, which use magnetic disks and are slower and less durable.

  • Optical: Optical storage devices, such as CDs, DVDs, and Blu-ray discs, use lasers to read and write data to a disc.

  • Flash drive: Flash drives are small, portable storage devices that use flash memory to store data.

Local network storage types:

  • NAS: Network-attached storage (NAS) is a file-level storage device that connects to a network to provide storage for multiple users and devices.

  • File server: A file server is a computer or storage device that is dedicated to storing and sharing files across a network.

Cloud storage service: Cloud storage services provide remote storage and access to data over the internet, allowing users to store and access data from anywhere with an internet connection. Examples include Dropbox, Google Drive, and Microsoft OneDrive.

2.6 Compare and contrast the following common computing devices and their purposes:

Mobile phones, tablets, laptops, workstations, servers, gaming consoles, and IoT devices all have different purposes and use cases. Here's a comparison of each:

Mobile phones: These are small handheld devices primarily used for making phone calls, sending text messages, and browsing the internet. They also come with other features like cameras, multimedia capabilities, and various apps.

Tablets: These are larger than mobile phones and have larger screens. They are designed for tasks such as web browsing, email, and multimedia consumption. They can also run apps and games like mobile phones.

Laptops: These are portable computers that are designed for productivity tasks such as word processing, web browsing, and multimedia consumption. They have a built-in keyboard and touchpad and run a full desktop operating system.

Workstations: These are powerful computers designed for running resource-intensive applications such as video editing, 3D rendering, and scientific simulations. They usually have powerful CPUs, GPUs, and a large amount of RAM.

Servers: These are computers that provide services to other computers over a network. They can be used for tasks such as web hosting, file sharing, and database management.

Gaming consoles: These are specialized computers designed for playing video games. They usually have dedicated hardware for running games and can be connected to a TV or monitor.

IoT devices: These are various types of devices that are connected to the internet and can be controlled or monitored remotely. They include home appliances, home automation devices, modern cars, IP cameras, streaming media devices, and medical devices.

  • Home appliances: These are various types of household devices such as refrigerators, washing machines, and ovens, that are connected to the internet and can be controlled or monitored remotely.

  • Home automation devices: These are devices that control various aspects of home automation such as lighting, temperature, and security systems.

  • Modern cars: These are cars that have various features such as navigation, entertainment, and safety systems that are connected to the internet.

  • IP cameras: These are cameras that are connected to the internet and can be accessed remotely.

  • Streaming media devices: These are devices that allow users to stream movies, TV shows, and other media content from the internet to a TV or monitor.

  • Medical devices: These are various types of devices used in healthcare such as pacemakers, insulin pumps, and blood glucose monitors, that are connected to the internet and can be monitored remotely.

Overall, each device has its own unique purpose and use cases.


Previous Next



simulationexams.com ad

certexams.com ad