Answer: C. Differential backup
Explanation: There are several ways od ensuring the preservation and storage of data even cases of disaster, one of such ways is data data mirroring which allows data to be replicated or copied in real time and several backup options. In cases where there there is need to restore a server, the warm recovery site provides a data or disaster recovery option used to mitigate the effect of data loss on organization. In the absence of data mirroring, differential backup option, provides the quickest recovery option as it only requires changes in the data stored after the last full backup. These speed experieced should be expected due to the relatively low data been dealt with rather than the entire data.
Answer:
a.locate
Explanation:
locate utility in Unix is used to quickly return the filepath of the file searched for.find also used to do the same work but it is not as fast as locate.
locate is faster than find because it does not read the filesystem to search the file infact it refers to the database to search the file and produces it's output and the database is created by updatedb command.
Answer:
Grid computing involves connecting geographically remote computers into a single network to create a computational grid that combines the computing power of all the computers on the network to attack large computing problems.
Answer:
While symmetric encryption uses a single shared key to encrypt and decrypt data, asymmetric uses two separate keys
