WGU C182

Application Software - correct answer Programs end users run to accomplish tasks. Productivity Software - correct answer Application software used to aid in productivity. I.E. Presentation software, word processor, spreadsheets. Internet Usage Software - correct answer Email, FTP client, web browser System Software - correct answer Consists of programs that make up the OS and directly support system itself. **Includes services or DAEMONS Server Software - correct answer Works with hardware to provide network service. Local Application - correct answer Software stored on an individual computer. Intranet - correct answer A LAN that uses IP. Used to communicate within organization. Cloud Computing - correct answer Allows organization to access resources/app anywhere, anytime. Beneficial because an org. may access resources it may not normally have. Operating Systems - correct answer Allows a user to easily access hardware/software, required to maintain computer environment. Kernel - correct answer Core component of OS. Loads when computer first boots Sits on top of hardware, is interface b/w hardware and software. Device Drivers - correct answer Interface b/w OS and hardware. Shell - correct 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) - correct answer OS programs that start when OS is loaded. They run in the background and wait for an event to initiate. Utility Programs - correct answer Allow user to monitor system performance. Web Server - correct 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 - correct answer Acts as a giant cache and allows pages accessed frequently in an organization to be accessed locally. *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 - correct answer Permits dB access across a network. Performs tasks such as data analysis, data manipulation, security,and archiving. May/may not store database itself. **MySQL is popular. FTP Server - correct answer Hosts files and allows clients access to files. Access is in form of uploading/downloading files. Requires either user has an account or logs in as anonymous user. File Server - correct answer Computer with large hard disk storing files, but can also store software to be run over network. Email Server - correct answer Provides email service. Accepts email request from clients. IMAP,POPS,HTTP,MAPI,MIME String Data - correct answer Alphanumeric or text Ex: James (Last name) 623 Hill Street Number Integer - correct answer Numeric data, whole numbers. Ex: 4 Floating Point - correct answer Decimal. Ex: 4.2 Date/Time - correct answer Type of Data Boolean/Logical - correct answer Type of Data. Ex: True/False (in reply to active subscriber?) Only two possible answers: yes/no or true/false Flat File Database - correct 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 - correct 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. Hierarchical Database - correct answer Organizes data by using tree-like or organizational chart type structure. *Main data points can have multiple sub-data points (Parent/child structure)-Subpoints can only have one main data point. * Records can be broken up so one portion is in one location and another is in another section. Ex: Employee database could list all employees, but a child relation could contain info about employee