Which of the following types of redundancy permits software to run simultaneously on multiple geographically distributed locations, with voting on results?
A.
Process
B.
Application
C.
Hardware
D.
Data
Explanation:
The various types of redundancy are as follows:
Hardware redundancy: it includes the installation of multiple processors, mirrored disks, multiple server farms, and RAIDS.
Process redundancy: It permits software to run simultaneously on multiple geographically distributed locations, with voting on results. It prevents attacks in which an attacker can get physical control of a machine, insert unauthorized software, and alter data. Data redundancy: It allows the system to take backup on a permanent media at a regular time interval.
Application redundancy: It needs at least two machines that can work on the same application. Application redundancy is the best way to make system infrastructure resilient against problems.