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5.4 System Support & Security - Coggle Diagram
5.4 System Support & Security
System Support & Security Phase
user expectations
system performance
security requirements
The systems support and security phase begins when a system becomes operational and continues until the system reaches the end of its useful life
User Support
Companies provide user support in many forms, including user training and a help desk to provide technical support and assistance
User Training
User Training Package
Depending on the nature of the changes, the package could include online support via e-mail, a special Web site, a revision to the user guide, a training manual supplement, or formal training sessions.
Training users about system changes is similar to initial training.
The main objective is to show users how the system can help them perform their jobs
Help Desks
A help desk is a centralized resource staffed by IT professionals who provide users with the support they need to do their jobs.
A help desk can boost its productivity by using remote control software, which allows IT staff to take over a user’s workstation and provide support and troubleshooting
Types Of Maintenance
1.Changing programs, procedures, or documentation to ensure correct system performance.
2.Adapting the system to changing requirements; and making the system operate more efficiently.
System Maintenance Tools
Performance monitor that provides data on program execution times
Program analyzer that scans source code, provides data element cross-reference information, and helps evaluate the impact of a program change
System Security
System security refers to protecting the system from theft, unauthorized access and changes, and accidental or accidental harm.
System Security Concepts
Integrity
prevents unauthorized users from creating, modifying, or deleting information.
Confidentiality
protects information from unauthorized disclosure and safeguards privacy.
Availability
ensures that authorized
users have timely and reliable access to necessary information
BACKUP AND RECOVERY
Backup
refers to copying data at prescribed intervals, or continuously
Recovery
involves restoring the data and restarting the system after an interruption