1. Hardware is the physical part of a network and software consists of programs.
2. Application program.
3. High-level.
4. Application programs can be acquired by buying the programs from a software house or hiring programmers to write them.
5. Accounts payable, accounts receivable, and payroll can be processed on a computer.
6. Application programs in networks today are easy to use because programmers do not need to know the details of network or terminal access.
7. The functions of an operating system are:
(a) create and remove programs from the system
(b) control the progress of programs
(c) enforce priorities
(d) prevent programs from interfering with one another
(e) handle exceptional conditions
8. A DBMS makes accessing a database easier for programmers.
9. Data Definition Language.
10. An application program uses a host language interface to communicate with a database.
11. Data name, length of the data, type of data, and edit information are included in a data dictionary.
12. Changes to a database affect only a few programs with data independence.
13. Transaction Control Process (TCP) acts as an interface between application programs and network terminals.
14. VTAM.
15. Communication software is made up of driver and handler routines, routines for linecontrol, task scheduling, message handling, routing, logging messages, and operator communication.
16. Software functions that are visible to a network user are security, data editing, formatting, error detection, and recovery.
17. A file transfer program must interact with:
(a) user
(b) other file transfer programs on the network
(c) file management system
18. Teletext is designed as a one-way text retrieval system.
19. Data is selected by the user and multiple pages are displayed from a centralized database to the user’s television in videotex.
20. AT&T Mail, Dialcom, EasyLink, EasyPlex/InfoPlex, MCIMail, ONTyme, Quick-Comm, Telemail, and The Source are public mail systems.