C182 - Introduction to IT exam with complete solutions

What is Information Technology 1) The task of gathering data and processing it into information and the ability to disseminate that information using technology 2) The technology itself that permits creating, maintaining and making information accessible, which includes the software, data, and computer networks 3) The collection of people who enable the processing of data and provide IT support (the computer, networks and operating systems). What is not Information Technology? 1) Raw data alone is not IT 2) Standalone technology devices and software (such as purely output devices). Use of technology itself to a means is not IT (ex: a background check) 3) People doing personal things outside the scope of information dissemination (such as making a birthday card for someone). System Administrator duties - Maintaining operating system of a computer system - Supporting the user - Installing new information Network Administrator duties - Physically laying down cable - Making connections - Working with the network hardware (routers and switches) - Supporting physical network Database Administrator duties - Focus on design, development and support of data management systems (DBMS) - Support, maintain, do performance tuning, and schema development on DBMSs Security Administrators duties - Stay informed of the many different types of attacks (denial of service, IP spoofing, buffer overflow, etc.) - Install, configure and administer appropriate firewall security to protect the organization systems - Work proactively against intrusions Web Administrator duties - Install, configure, maintain, secure and troubleshoot web server - May be required to set up password files and establish locations where server scripts can be stored and tested. Buffer overflow Allows hackers to invade computer memory with their own code Difference between System and Network administrators System Administrators: work with users Network Administrators: work with the physical network Difference between Database and Web administrators Database: Works specifically with DBMS Web: works with webpages that serve the DBMS Difference between Security and Web administrators Security: Secure data access Web: Secure webpage access Difference between Security and Network administrators Security: securing the network parameter by allowing/denying access to data ports over the network; working with firewalls specifically Network: Physically installing and securing networking devices. Skills and duties of IT Personnel - Troubleshooting problem solving - Knowledge of operating systems - System level programming - System security - Use, install and replace hardware Difference between IT Professional and IT Specialist Professional: Expected to understand theory, hardware/software components, and programming techniques; need less math than a computer scientist. Specialist: Have greater privileges with respect to the computer systems - have access to many resources; must become aware of the impacts that computers, and IT in general, have on society (jack of all trades).