Trend Technology CICS Mock Test

CICS

CICS stands for Customer Information Control System. CICS was developed in 1968 by IBM. CICS allows users to develop and execute online application in an MVS environment. CICS has become the most commonly used server for Internet applications. CICS is a transaction processing system which is also called as Online Transaction Processing (OLTP) Software. CICS is a data communication system that can support a network containing hundreds of terminals.

What is a CICS Web service?

The Web services support in CICS Transaction Server Version 3.1 enables yourCICS programs to be Web service providers or requesters. CICS supports a number of specifications including SOAP Version 1.1 and Version 1.2, and Web services distributed transactions (WS-Atomic Transaction).

What is a CICS terminal?

A TERMINAL resource defines the characteristics of a terminal device which communicates with CICS®. Terminal devices include visual display units, printers, operating system consoles, and more specialized devices such as facsimile (FAX) machines.

What is CICS screens in mainframe?

Customer Information Control System (CICS) is a family of mixed language application servers that provide online transaction management and connectivity for applications on IBM Mainframe systems under z/OS and z/VSE. CICS is middleware designed to support rapid, high-volume online transaction processing.

CICS is a DB/DC system which is used in online applications. CICS was developed because batch operating system can execute only batch programs. CICS programs can be written in COBOL, C, C++, Java, etc. These days, users want information within seconds and in real time. To provide such quick service, we need a system which can process information online. CICS allows users to communicate with the back-end system to get the desired information. Examples of online programs include online banking system, flight reservation, etc.

Functions of CICS

The main functions performed by CICS in an application are as follows −

• CICS manages requests from concurrent users in an application.
• Although, multiple users are working on CICS system but it gives a feel to user that he is the single user only.
• CICS gives the access to data files for reading or updating them in an application.

Features of CICS

The features of CICS are as follows −

• CICS is an operating system in itself, as it manages its own processor storage, has its own task manager which handles execution of multiple programs, and provides its own file management functions.
• CICS provides online environment in batch operating system. Jobs submitted are executed immediately.
• CICS is a generalized transaction processing interface.
• It is possible to have two or more CICS regions at the same time, as CICS runs as a batch job in the operating system at the back-end.

Below are the Practice question with answer of the Trend Technology CICS Mock Test.