Unit 3 Review - Apps and Software

An OS provides an interface between your applications and system hardware, and...

• Allows users to send commands (output) and receive feedback (input)

• Allows users to send commands (input) and receive feedback (output)

• Makes users want to punch their computer

• Provides the option for a potential user to move their fingers and click the interface to active the machine that produces banana for monkey

The software that creates and manages a virtual machine on a host machine

• A hypervisor can run multiple virtual machines on a single host computer

• A hypervisor allows the user to stare directly at the sun

• A hypervisor is an in-style product that is widely used, especially in China.

• A hypervisor lets you see the source code for a website

What are the tiers of the 3-Tier Application Architecture Model?

• Application Tier - Apps

  Programming Tier - Code

  Binary Tier - System Binary code

• Toenail Tier - Your Toenail

  Splinter Tier - A large stick of wood under your toenail

  Smashes-into-a-wall-tier - You smash your foot into the wall

• Presentation Tier - UI

  Business Logic Tier - Coordinates between presentation and data

  Data Tier - Which is the Database or file system holding the data

Which one of these statements about Tier 2 Application Architecture models is untrue.

• Usually a client server model

• Business logic layer not included

• More suitable for small-scale applications

• Usually cheaper than 3 tier

• More suitable for large-scale applications

Which one of these statements about Tier 1 Application Architecture models is untrue.

• Easiest architecture of them all

• All components of the application are run from one computer

• You have to be able to count to 3 to be able to use it

• This could be a client computer or a server (Depends on the application and user needs.)

Single-platform software only works on one platform

• Yes

• No

What even is N-Tier?

• The Umbrella term for application architecture. The letter n is intended to be a variable (like algebra)

• I N-Tier the building

• Cereal

A single-use program is commercial software for which the license restricts installation to a single user. Depending on the EULA, the user might be able to install the software on only one computer or multiple computers. Even if installed on multiple computers, only one instance of the app can be used at once.

• True

• False

This type of license permits an organization to install the application on an agreed-upon number of PCs. For example, a school may buy a site license of an antivirus program and allow all students to download and install it freely to ensure that the school’s network remains virus free. Many software manufacturers are moving to a subscription-based model rather than a one-time purchase model. Microsoft Office 365 is a great example of this, Antivirus software companies have used this model for years. Instead of paying for the software once and then “owning” it, the user subscribes and then has access to the software, typically for one year.

• Single-Use

• Corporate, Campus, Group, or Site

• Concurrent license

A concurrent license allows the software to be installed on many PCs but used concurrently by a smaller number of them. For example, you may have 1,000 computers with the application installed, but only 100 users can use it simultaneously. Dr Dispatch used a Concurrent License

• True

• False