WGU C182 Questions and Answers Latest Update Already Passed

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WGU C182 Questions and Answers Latest Update Already Passed Application Software ✔✔Programs end users run to accomplish tasks. Productivity Software ✔✔Application software used to aid in pr... oductivity. I.E. Presentation software, word processor, spreadsheets. Internet Usage Software ✔✔Email, FTP client, web browser System Software ✔✔Consists of programs that make up the OS and directly support system itself. **Includes services or DAEMONS Server Software ✔✔Works with hardware to provide network service. Local Application ✔✔Software stored on an individual computer. Intranet ✔✔A LAN that uses IP. Used to communicate within organization. Cloud Computing ✔✔Allows organization to access resources/app anywhere, anytime. Beneficial because an org. may access resources it may not normally have. Operating Systems ✔✔Allows a user to easily access hardware/software, required to maintain computer environment. Kernel ✔✔Core component of OS. Loads when computer first boots Sits on top of hardware, is interface b/w hardware and software. Device Drivers ✔✔Interface b/w OS and hardware. Shell ✔✔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) ✔✔OS programs that start when OS is loaded. They run in the background and wait for an event to initiate. Utility Programs ✔✔Allow user to monitor system performance. Web Server ✔✔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 ✔✔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 ✔✔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 ✔✔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 ✔✔Computer with large hard disk storing files, but can also store software to be run over network. Email Server ✔✔Provides email service. Accepts email request from clients. IMAP,POPS,HTTP,MAPI,MIME String Data ✔✔Alphanumeric or text Ex: James (Last name) 623 Hill Street Number Integer ✔✔Numeric data, whole numbers. Ex: 4 Floating Point ✔✔Decimal. Ex: 4.2 Date/Time ✔✔Type of Data Boolean/Logical ✔✔Type of Data. Ex: True/False (in reply to active subscriber?) Only two possible answers: yes/no or true/false Flat File Database ✔✔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 ✔✔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 ✔✔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 position, pay level, responsibilities. Another child relation could include info about employee projects. Sub data is always specific to main data point. Tuples ✔✔Records represented by rows. Unshielded Twisted Pair (UTP) ✔✔Most commonly used network connections. Looks just as it sounds, wires twisted together in a pair. Fiber Optic Cable ✔✔Transmits via light pulses as opposed to electromagnetic ones. Twisted Pair ✔✔Network connection commonly used in the past. It is still seen a lot today because it was used extensively in the phone systems. Is cheap and and already in place. **transmits using electromagnetic waves. Coaxial Cable ✔✔Commonly used network connection. *Transmits using electromagnetic waves. Bandwidth ✔✔Transfer rate permissib [Show More]

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