Ports & Protocols
This secure web protocol commonly communicates over TCP port 443.
What is HTTPS?
This technology uses satellites to help a mobile device determine its location for apps such as Maps.
What is GPS?
This technology allows multiple operating systems to run on the same physical computer.
What is virtualization?
Gmail and Microsoft 365 are examples of this cloud service model, where users simply log in and use a finished application.
What is SaaS (Software as a Service)?
This smaller type of memory module is commonly found in laptops and can often be removed and upgraded.
What is a SO-DIMM?
A technician needs encrypted command-line access to a remote network device. This protocol uses TCP port 22.
What is SSH?
This removable card helps a cellular carrier identify a subscriber and can be moved from one compatible phone to another.
What is a SIM?
In virtualization, Windows is running inside a VM on a Mac. Windows would be considered this type of operating system.
What is the guest OS?
An organization operates cloud infrastructure inside its own data center instead of relying entirely on a third-party public provider.
What is a private cloud?
A user wants to upgrade an older laptop from a spinning hard drive to storage with no moving parts for better speed and reliability.
What is an SSD?
A user's computer needs to resolve company.com to an IP address. This service commonly uses UDP port 53.
What is DNS?
A student has internet access on their phone through 5G but their laptop has no connection. They enable this feature on the phone to share its cellular connection with the laptop over Wi-Fi.
What is a hotspot?
A developer needs to test potentially unstable software without risking damage to their main computer. They create an isolated VM specifically for testing. This type of environment is called this.
What is a sandbox?
A company rents CPU, storage, and other infrastructure from a cloud provider, but its IT team is still responsible for installing and maintaining the operating system and applications.
What is IaaS (Infrastructure as a Service)?
A technician is installing a compact modern SSD that slides directly into a motherboard slot and is secured with a small screw.
What is an M.2 drive?
A new laptop connects to the network and automatically receives an IP address, subnet mask, default gateway, and DNS settings. This protocol uses UDP ports 67 and 68.
What is DHCP?
A user is setting up a new wireless headset. They make the headset discoverable, select it on their phone, and confirm a PIN. This one-time process allows the devices to automatically reconnect later.
What is Bluetooth pairing?
Before making risky configuration changes to a VM, a technician saves its current state so they can quickly return to it if the changes cause problems.
What is a snapshot?
A development team wants to build its own application but does not want to maintain the operating system or underlying infrastructure. The cloud provider supplies the environment and tools needed to build and run the application.
What is PaaS (Platform as a Service)?
A user is replacing an old laptop drive with an SSD but wants to keep the existing OS, applications, settings, and files instead of starting over. This process can copy the old drive to the new one.
What is cloning / imaging?
A Windows technician can reach a server but cannot access its shared folders. The firewall is blocking the port commonly used for direct SMB file and printer sharing. Name the port.
What is TCP 445?
A user's mapping app still estimates their location even though GPS reception is poor inside a building. Name one of the two other location methods covered in this lesson that the device could use.
What is nearby Wi-Fi OR cellular tower triangulation?
A company's required application only runs on Windows 10, but all employee computers now run Windows 11. Instead of maintaining a second physical computer, IT uses this solution to keep the older application available.
What is running the legacy software/older OS in a virtual machine?
Two companies use different cloud models. Company A must manage its own OS, applications, and data. Company B focuses mainly on developing its application while the provider manages the OS and underlying platform. Identify Company A's model and Company B's model.
What are IaaS and PaaS?
A laptop's built-in keyboard stops responding. Before replacing it, a technician connects a USB keyboard, which works normally. Based on this test, what component should the technician suspect?
What is the laptop's built-in keyboard / keyboard hardware?