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1. Application Software: Programs end users run to accomplish tasks.
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2. Productivity Software: Application software used to aid in productivity. I.E. Pre-
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sentation software, word processor, spreadsheets.
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3. Internet Usage Software: Email, FTP client, web browser
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4. System Software: Consists of programs that make up the OS and directly sup-
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port system itself.
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**Includes services or DAEMONS
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5. Server Software: Works with hardware to provide network service.
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6. Local Application: Software stored on an individual computer.
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7. Intranet: A LAN that uses IP. Used to communicate within organization.
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8. Cloud Computing: Allows organization to access resources/app anywhere, any-
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time. Beneficial because an org. may access resources it may not normally have.
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9. Operating Systems: Allows a user to easily access hardware/software, requiredto
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maintain computer environment.
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10. Kernel: Core component of OS.L
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oads when computer first boots
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Sits on top of hardware, is interface b/w hardware and software.
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11. Device Drivers: Interface b/w OS and hardware.
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12. Shell: Interface for user, often personalized. The shell provides access to thek
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ernel.
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, I.E. The GUI will translate mouse motions into calls to kernel/routines. Desktopeleme
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nts include shortcuts, windows theme, menus, background.
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13. Services (Daemons): OS programs that start when OS is loaded. They run inthe
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w background and wait for an event to initiate. w w w w w w w
14. Utility Programs: Allow user to monitor system performance.
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15. Web Server: Role is to respond to HTTP requests.
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*Most HTTP requests are for HTML docs, but could include any web accessiblere
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source.
It's all combined into the URL.
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**APACHE is most popular web server- w w w w w
can execute scripts for dynamic pages, usesecurity mechanisms, log request for tre
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nd tracking. w
16. Proxy Server: Acts as a giant cache and allows pages accessed frequently inan
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organization to be accessed locally. w w w w
*Also provides degree of anonymity, since IP address recorded is for proxy serveran
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d not individual client.
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*Can also be used to block requests to certain servers (i.e Facebook)
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*Can reject responses that contain certain content (i.e "porn")
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**SQUID is most common, but APACHE can also be used as proxy server.
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