Module #5- Information Technology #1
1. What are the 3 functions performed by the CPU (Central processing unit)?
-it performs calculations, makes comparisons, and controls the way data moves through the computer.
-The CPU executes program instructions
-The electronic circuitry of the CPU reads and interprets software instructions and processes data
2. Why is it important to know how much RAM a computer has?
-It is important because software packages require a minimum amount; if the computer doesn’t have enough RAM, it won’t be able to use that particular software package.
3. What is the primary purpose of an Operating System?
-It is to ...view middle of the document...
10. What are the 7 network service applications most frequently used in a business environment?
1. Electronic mail or e-mail 6. Electronic funds transfer
2. Voice mail (telephone) 7. Electronic data interchange (EDI)
3. Video conferencing
4. Work group conferencing
5. Electronic bulletin boards
11. What are the differences between Open and Closed systems?
- Closed System- doesn’t take in or give out anything to the environment. All the behavior of the system takes place by interactions among the components of the system. These systems are characterized by the way they will always move towards an equilibrium state. This is essentially a state where the system is at rest or in a state of internal balance.
-Open System- they are open to the outside world; they take in materials, energy, or information and can also give these things out again. They tend towards a steady state balance rather than equilibrium.
12. What are Management Information Systems?
- Also called management reporting systems, provide middle managers with reports that summarize and categorize information derived from all the company databases. The purpose of the reports is to allow managers to spot trends and to get an overview of current activities, as well as to monitor and control operations.
13. What are the kinds of decisions made by the 3 levels of management within the organization?
-Lower-Level Management- managers at this level make operating decisions to ensure that specific jobs are done.
-Middle-Level Management- Managers are concerned with tactical decision making.
-Top-Level Management-strategic decision-making.
14. Compare the way transactions are processed in a Transaction Processing System.
Transaction processing is either done via batch or real-time processing.
-Batch processing-data for individual transactions are gathered and stored but are not entered into the system immediately
Later, either on a schedule or when a sufficient number of transactions have accumulated, the transactions are sorted and processed to update the database.
-Real time- each transaction is processed immediately. The person providing the data is typically available to help with error correction and receives confirmation of transaction completion. Real-time processing requires immediate access to an online database. It has more stringent requirements for computer response and computer work time than batch processing.
15. What are the 3 most important features of transaction processing?
- The 3 are the methods for data entry, report generation, and query processing.
Data entry-is the process of populating the database with the data and information. During data entry, new records are added to the database by providing the details for each field in the record.
16. Explain the kinds of control procedures management establishes within an Information System.
Managers must be able to monitor and control the performance...