Chapter 5 Flashcards
What are the Characteristics of Cloud Computing?
MORE PW
Elasticity and Scalability Pay per Use On-demand Resiliency Multi-Tenancy Workload Movement
Advantages of Cloud Computing
QUICK and EASY BACKUP ALMOST COST AUTOMATIC hote hai
Cost Efficient Almost Unlimited storage Backup and recovery Automatic Software Integration Easy access to information Quick deployment
Disadvantages of Cloud Computing
Technical Issues
Security in the Cloud
Prone to Attack
Objectives of BPA
CIAT
Confidentiality
Integrity
Availbility
Timeliness
What are Controls?
What are the moajor control objectives of BPA?
SAVE CAP
Authorization Completeness Accuracy Validity Error-Handling Physical safeguards and security Segregation of duties
Applications based on NATURE OF PROCESSING
Batch processing
On-line processing
Real tine processing (extension of on-line)
Applications based on SOURCE OF APPLICATION
Custom built application
Packaged software
Leased application
Applications based on SIZE & COMPLEXITY OF BUSINESS
Small & Medium Enterprise business
Large Business
Applications based on NATURE OF APPLICATIONS (TYPES)
Accounting Applications Office management software Compliance Applications Industry specific Applications ERP software
What is Network virtualization?
In IT, VIRTUALIZATION is the process of creating logical computing resources from available physical resources.
The core concept of network virtualization lies in Partitioning, which divides a single physical server into multiple logical servers.
Once the physical server is divided, each logical server can run an operating system and applications independently
This is accomplished using virtualization software to create a layer of abstraction between workloads and the underlying physical hardware.
NV is intended to optimize network speed, reliability, flexibility and security.
Storage Virtulization
SV is the apparent pooling of data from multiple storage devices, even different type of storage devices, into what appears to be a single device that is managed from a central console
SV helps the storage administrator perform the tasks of backup, archiving and recovery more easily and in less time
SV is sometimes described as “abstracting the logical storage from the physical storage”
Grid computing?
It is a computer network in which each computer’s resources are shared with every other computer in the system.
It is a special kind of distributed computing.
This system can be as simple as a collection of similar computers running on the same operating system or as complex as inter-networked systems comprised of every computer platform.
Reasons for using GRID comouting
# An insurance company mines data from partner hospital for Fraud detection #An application service provider offloads excess load to a compute cycle provider #Civil engineers collaborate to design, execute & analyse shake table experiments #An Enterprise configures internal & external resources to support e-business workload.
Benefits of Grid computing
- Making use of under-utilized resources
- Resource Balancing
- Parallel CPU Capacity
- Virtual resource and virtual organisation for collaboration
- Access to additional resource
- Reliability
- Management
Constraints to be considered when developing a Grid computing architecture
OR
Grid Computing Security
- Single Sign-on
- Protection of Credentials
- Inter-portability with local security solutions
- Exportability
- Support for secure group communication
- Support for multiple implementations
