4.3, 4.4, and 4.5 Backup, Recovery, and Safety

Question 1

Backup

Answer 1

The process of creating and storing copies of data to protect against data loss

Question 2

Recovery

Answer 2

Restoring data backup during data or system loss

Question 3

Full backup

Answer 3

A file containing all the data from the original source

Question 4

Incremental backup

Answer 4

Only copies data that has been modified since the last backup

Question 5

Differential backup

Answer 5

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

Question 6

Synthetic backup

Answer 6

A sort of subsequent full backup that compares to the previously backed up data on the storage and uploads only the current changes from the backup source

Question 7

How are synthetic backups beneficial?

Answer 7

Because they don’t use up server resources by doing a lot of read/write operations

Question 8

Archive attribute

Answer 8

The archive flag is set to ‘on’ any time a file is modified

Question 9

Which backup/s clear archive flags

Answer 9

Full and incremental

Question 10

Which backup does not clear archive flags?

Answer 10

A differential backup

Question 11

Describe how the grandfather-father-son backup scheme works

Answer 11

Son tapes - store most recent data; shortest retention period
Father tapes - middle generation
Grandfather tapes - longest retention period; most amount of tapes

Question 12

What is the 3-2-1 rule?

Answer 12

There should be 3 copies of the data (including production copy on servers), two different types of media, and one copy offline and off-site

Question 13

When can a backup be called good?

Answer 13

When it has been tested that it works

Question 14

Surge

Answer 14

Unexpected increase in the voltage being provided

Question 15

Spike

Answer 15

A sudden increase in voltage that lasts for less than three nanoseconds

Question 16

List some ways that a spike could be caused

Answer 16

Short circuit, power outage, lightning strike

Question 17

Sag

Answer 17

Unexpected decrease in the voltage provided

Question 18

Brownout

Answer 18

A drop in voltage in the electricity supply that can cause a computer to shut off

Question 19

Blackout

Answer 19

Total loss of power for a long period of time

Question 20

UPS

Answer 20

Combines the functionality of a surge suppressor with an automated battery backup

Question 21

Backup generator

Answer 21

An emergency power system used when there is an outage of the regular electric grid power

Question 22

Give three types of backup generators

Answer 22

Portable gas engine
Permanently installed
Battery inverter

Question 23

Why do you never disconnect the ground wire?

Answer 23

Because it acts as a safe path for electricity to run in the event of a short circuit

Question 24

When does electrostatic discharge occur?

Answer 24

When there is a path that allows electrons to rush from a statically charged body to a component that has no charge

Question 25

List the 3 precautions to prevent ESD

Answer 25

1. Make sure the room is set up to reduce ESD
2. Take out anything that could contribute to static electricity
3. Always handle components using ESD safe equipment

Question 26

What is a particularly large contributor to ESD?

Answer 26

Anything with a mechanical motor

Question 27

What should the humidity level of HVAC systems be set at?

Answer 27

40% to 60%

Question 28

What networks can HVAC systems be connected to?

Answer 28

SCADA and ICS

Question 29

When disposing of materials, what are three things you must comply with?

Answer 29

Health and safety laws
Building codes
Environmental regulations

Question 30

What information does a Material Safety Data Sheet contain?

Answer 30

Ingredients, health hazards, precautions and first aid information

Question 31

How do you dispose of/recycle a toner cartridge?

Answer 31

Always wrap it up first