Backup, Recovery and Safety

Question 1

what is an incremental backup?

Answer 1

backups only that which has changed since your last backup.

Question 2

what is a differential backup?

Answer 2

backs up all the data that has been changed since the last full backup

Question 3

what is grandfather to son (GFS)

Answer 3

tape media rotation scheme that allows some of your backup media to be taken to an offsite storage.

Question 4

what is a son backup?

Answer 4

a daily back up

Question 5

what is a father backup?

Answer 5

a weekly backup

Question 6

what is a grandfather backup?

Answer 6

a monthly backup

Question 7

what is a 3-2-1 backup rule?

Answer 7

three copies of your data, two different types of media and one copy being held offline and offsite

Question 8

what is a redundant power supply?

Answer 8

provides two or more complete power supplies inside of one.

Question 9

what is a surge?

Answer 9

an unexpected increase in the amount of voltage thats being provided

Question 10

what is a sag?

Answer 10

an unexpected decrease in the amount of voltage provided

Question 11

what is a spike?

Answer 11

a short transient voltage that can be due to a short circuit, a trip circuit breaker, a power outage or even a lightning strike.

Question 12

what is a UPS?

Answer 12

uninterrupted power supply. combines the functionality of a surge suppressor with a battery backup.