Planning for the worst

Question 1

What is a RAID?

Answer 1

Redundant Array of Independent Disks - combining multiple hard drives into one logical hard disk drive that is recognized by the OS

Question 2

What is RAID 10?

Answer 2

A combination of RAID 1 and 0. Required 4 disks and provides mirroring along with striping

Question 3

What is RAID 1?

Answer 3

Provides redundancy by mirroring the data on two disks - good for backup

Question 4

What is RAID 0?

Answer 4

Provides data striping across multiple disks to increase performance

Question 5

What is RAID 5?

Answer 5

Provides redundancy by striping data across at least three disk drives

Question 6

What is RAID 6?

Answer 6

Modified version of RAID 5

Question 7

What does a Fault Resistant RAID do?

Answer 7

Protects the loss of data if a single disk fails (RAID 1 or 5)

Question 8

What does a Fault Tolerant RAID do?

Answer 8

Protects against the loss of data if a single component fails (RAID 1, 5 or 6). Redundant RAID’s are fault tolerant

Question 9

What does a Disaster Tolerant RAID do?

Answer 9

Provides two independent zones with full access to data (RAID 10)

Question 10

What is the purpose of network redundancy?

Answer 10

To ensure the network remains up

Question 11

What is a server cluster?

Answer 11

Taking two or more servers working together to perform a particular function

Question 12

What is a failover cluster?

Answer 12

Secondary server that can take over the function when the primary fails

Question 13

What is a load balancing cluster?

Answer 13

Servers clustered in order to share resources such as CPU, RAM and Hard Disks - often used by big websites to balance load

Question 14

What is a redundant site

Answer 14

Back up location in case primary location is compromised

Question 15

What is a hot site?

Answer 15

Location that is near duplicate of the original that can be up and running within minutes

Question 16

What is a warm site?

Answer 16

Location that has some capabilities of the original but not all of them

Question 17

What is a cold site?

Answer 17

Location that has the basic necessities but not the configuration of the original site. Can take days to get up and running

Question 18

What is a full back up?

Answer 18

When all data contents of a drive are backed up

Question 19

What is an incremental backup?

Answer 19

When only the contents that have changed since the last full or incremental back up are backed up

Question 20

What is a differential back up?

Answer 20

When only the contents that have changed since the last full back up are backed up

Question 21

Which back up takes more time to create but less time to restore?

Answer 21

Differential Backup

Question 22

What term is used to describe an average time required to repair a failed component or device?

Answer 22

MTTR - Mean Time to Repair

Question 23

In Business Continuity Planning (BCP), the maximum tolerable point in time to which systems and data must be recovered after an outage is called:

Answer 23

RPO - Recovery Point Objective

Question 24

What is NAS?

Answer 24

Network Attached Storage - dedicated file storage that enables multiple users to retrieve data from centralized disk capacity.

Question 25

a type of removable storage media that contains a portable, non-persistent OS?

Answer 25

Live boot media

Question 26

An exact copy of the entire state of a computer system is known as:

Answer 26

System Image

Question 27

What is a SAN?

Answer 27

Storage Area Network - A dedicated local network consisting of devices providing data access

Question 28

What is a UPS?

Answer 28

Uninterruptible Power Supply - Combines surge protector with battery back up