Backup, Recovery, and Safety

Question 1

Difference between Under-voltage event, Power spikes, and Power surge?

Answer 1

Under-voltage event - reduction in or restriction on the availability of electrical power

Power spikes - significant over-voltage event that occurs for a very short period of time

Power surge - an extended over-voltage event

Question 2

How to protect against an under-voltage event? (2)

Answer 2

1) Battery backup
2) Line conditioner

Question 3

Process of creating and storing copies of data to protect against data loss

Answer 3

Backup

Question 4

Process of restoring data backup during data or system loss

Answer 4

Recovery

Question 5

4 types of backup / recovery methods

Answer 5

1) Full backup
2) Incremental backup
3) Differential backup
4) Synthetic backup

Question 6

The backup job that is going to create a file that contains all the data from the source. (Backup that takes up a lot of space and takes a lot of time)

Answer 6

Full backup

Question 7

Backup job(s) that will only back up things that have changed since the last backup (very quick but takes longer to restore)

Answer 7

Incremental backup

Question 8

Backup job(s) that backs up all the data that has since been changed since the last full backup (medium recovery and restore time and storage)

Answer 8

Differential backup

Question 9

Backup that is an optional type of backup that can create full backups with lower data transfer requirements (offline type of backup)

Answer 9

Synthetic backup

Question 10

True or False? Archive attributes get cleared when you do a Full backup or an incremental backup

Answer 10

True - (Archive attributes are not cleared when you do a differential backup)

Question 11

MSDS

Answer 11

Material Safety Data Sheet

Question 12

The period of time between backup jobs

Answer 12

Frequency

Question 13

Is cloud storage considered off-site or on-site backup?

Answer 13

Off-site

Question 14

Tape media rotation scheme that allows some of your backup media to be taken to an offsite storage (generation style backup)

Answer 14

Grandfather-Father-Son (GFS)

Question 15

3-2-1 Backup Rule

Answer 15

3) Three copies of your data
2) Two different types of media
1) One copy being held offline and off-site

Question 16

Enclosure that provides two or more complete power supplies inside of one

Answer 16

Redundant Power supply

Question 17

An unexpected increase in the amount of voltage that’s being provided (opposite of a sag)

Answer 17

Surge

Question 18

A short, transient voltage that can be due to a short circuit, a trip circuit breaker, a power outage, or even a lightning strike (extended surge)

Answer 18

Spike

Question 19

What can help protect from a Surge or a Spike?

Answer 19

Surge Protector

Question 20

An unexpected decrease in the amount of voltage provided (opposite of a surge)

Answer 20

Sag

Question 21

Occurs when the voltage drops low enough that it causes the lights to dim and can cause a computer to shut off (extended sag)

Answer 21

Brownout

Question 22

Occurs when there is a total loss of power for a long period of time

Answer 22

Blackout

Question 23

Power supply that combines the functionality of a surge suppressor with a battery backup (used for about a max of 60 min after power out)

Answer 23

Uninterruptable Power Supply (UPS)

Question 24

An emergency power system used when there is an outage of the regular electric grid power (used for hours after power out)

Answer 24

Backup Generator

Question 25

Ensures every electrical device has a path to the ground, which is a path that provides the least amount of resistance for electrical current to flow away harmlessly

Answer 25

Grounding

Question 26

Occurs whenever there's a path that allows electrons to rush from a statically charged body to a component that has no charge

Answer 26

ESD (Electrostatic Discharge)

Question 27

Contains all the information about the ingredients, health hazards, precautions, disposal, and first aid information

Answer 27

Material Safety Data Sheet (MSDS)

Question 28

Backup, Recovery, and Safety review: 1) Disconnect the power 2) Prevent trip hazards 3) Lift w/ your legs not your back 4) Refer to MSDS (Material Safety Data Sheet)

Answer 28

.

Question 29

Karen lives in an area that is prone to hurricanes and other extreme weather conditions. She asks you to recommend an electrical conditioning device that will prevent her files from being corrupted if the building's power is unstable or lost. Additionally, she would like the computer to maintain power for up to an hour of uptime to allow for a graceful shutdown of her programs and computer. Which of the following should you recommend? a) Surge protector b) UPS (Uninterruptable Power Supply) c) Power distribution unit d) Line conditioner

Answer 29

**b) UPS (Uninterruptable Power Supply)** *An uninterruptible power supply or uninterruptible power source (UPS) is an electrical apparatus that provides emergency power to a load when the input power source becomes too low or the main power fails. A UPS provides near-instantaneous protection from input power interruptions by using a battery backup. The on-battery run-time of most uninterruptible power sources is usually short (less than 60 minutes) but sufficient to properly shut down a computer system.*

Question 30

Which of the following backup rotation schemes uses a three-tiered approach to ensure at least one monthly full backup is conducted? a) GFS (Grandfather-father-son) b) Tower of Hanoi c) 3-2-1 backup d) FIFO backup

Answer 30

**a) GFS (Grandfather-father-son)** *The grandfather-father-son (GFS) backup rotation scheme is widely used to combine full and incremental backups to reduce backup time and enhance storage security.* - The grandfather is a full backup that is stored off-site once per month. - The father is a weekly full backup that is conducted. - The son is an incremental or differential backup conducted each day. *For example, each Monday a full backup can be conducted which becomes the father. Then, each day of the week a son is created by performing an incremental or differential backup. Once per month, a full backup is conducted to become the grand*

Question 31

You are going to replace a power supply in a desktop computer. Which of the following actions should you take FIRST? a) Verify proper cable management is being used b) Dispose of the old power supply c) Remove any jewelry you're wearing d) Use a grounding probe to discharge the power supply

Answer 31

**c) Remove any jewelry you're wearing** *Before working on a computer or server, you should always remove your jewelry. Jewelry such as bracelets and necklaces can often dangle and come into contact with sensitive components or electrical connections that can cause damage to the components or injure you. Therefore, all jewelry should be removed before working on an electrical system or computer to reduce the risk of shock.*