WGU C182 Questions and Answers Solved 100% Correct!!

Application Software - Answer-Programs end users run to accomplish tasks. Productivity Software - Answer-Application software used to aid in productivity. I.E. Presentation software, word processor, spreadsheets. System Software - Answer-Consists of programs that make up the OS and directly support system itself. **Includes services or DAEMONS Server Software - Answer-Works with hardware to provide network service. Local Application - Answer-Software stored on an individual computer. Intranet - Answer-A LAN that uses IP. Used to communicate within organization. Cloud Computing - Answer-Allows organization to access resources/app anywhere, anytime. Beneficial because an org. may access resources it may not normally have. Operating Systems - Answer-Allows a user to easily access hardware/software, required to maintain computer environment. Kernel - Answer-Core component of OS. Loads when computer first boots Sits on top of hardware, is interface b/w hardware and software. Device Drivers - Answer-Interface b/w OS and hardware. Shell - Answer-Interface for user, often personalized. The shell provides access to the kernel. I.E. The GUI will translate mouse motions into calls to kernel/routines. Desktop elements include shortcuts, windows theme, menus, background.Services (Daemons) - Answer-OS programs that start when OS is loaded. They run in the background and wait for an event to initiate. Utility Programs - Answer-Allow user to monitor system performance. Web Server - Answer-Role is to respond to HTTP requests. *Most HTTP requests are for HTML docs, but could include any web accessible resource. It's all combined into the URL. **APACHE is most popular web server-can execute scripts for dynamic pages, use security mechanisms, log request for trend tracking. Proxy Server - Answer-A software that acts as an intermediary between a client and a server to shield the client from adverse actions of the server. *Also provides degree of anonymity, since IP address recorded is for proxy server and not individual client. *Can also be used to block requests to certain servers (i.e Facebook) *Can reject responses that contain certain content (i.e "porn") **SQUID is most common, but APACHE can also be used as proxy server. Database Server - Answer-Permits database access across a network. Performs tasks such as data analysis, data manipulation, security, and archiving. May/may not store database itself. **MySQL is popular. File Server - Answer-Computer with large hard disk storing files, but can also store software to be run over network. Email Server - Answer-Provides email service. Accepts email request from clients. IMAP,POPS,HTTP,MAPI,MIME String Data - Answer-Alphanumeric or textEx: James (Last name) 623 Hill Street Number Integer - Answer-Numeric data, whole numbers. Ex: 4 Floating Point - Answer-Decimal. Ex: 4.2 Date/Time - Answer-Type of Data Boolean/Logical - Answer-Type of Data. Ex: True/False (in reply to active subscriber?) Only two possible answers: yes/no or true/false Flat File Database - Answer-One large single table without relations between tables. *Most common is CSV file (files separated by comma) *Flat file is used if amount of data is fairly small. Ex: Spreadsheet Relational Database - Answer-Most common structure for database. *Distinguished by multiple tables with interrelated fields. *When queried, data can be pulled form any # of relations that may be contained in multiple databases. *Provides lots of flexibility.