Ch 12- 2 Minute Drill

Question 1

Disaster Recovery Methods (1)

Answer 1

Organizations should build a disaster recovery plan (DRP) to ensure that they have implemented the proper disaster recovery strategy for their organization.

Question 2

Disaster Recovery Methods (2)

Answer 2

Mean time between failures (MTBF) is used to determine approximately how long it takes a device to fail.

Question 3

Disaster Recovery Methods (3)

Answer 3

Mean time to repair (MTTR) defines the amount of time it takes to repair a failed component.

Question 4

Disaster Recovery Methods (4)

Answer 4

An organization can use recovery time objective (RTO) and recovery point objective (RPO) to help define a DRP.

Question 5

Disaster Recovery Methods (5)

Answer 5

A redundant system can be used to provide a backup to the primary system in case the primary system fails.

Question 6

Disaster Recovery Methods (6)

Answer 6

Failover allows a system to automatically switch to a redundant system in the event the primary system fails.

Question 7

Disaster Recovery Methods (7)

Answer 7

Organizations can implement a multisite configuration to create a backup site at an alternate location that allows the environment to be quickly relocated.

Question 8

Disaster Recovery Methods (8)

Answer 8

A cold site does not include any backups or hardware. It is a physical location that has network connectivity where an organization can move their equipment in case of failure.

Question 9

Disaster Recovery Methods (9)

Answer 9

A hot site is a duplicate of the original site and has readily available hardware and a near-complete backup of the organization’s data.

Question 10

Disaster Recovery Methods (10)

Answer 10

A warm site is a combination of a hot and cold site and has readily available hardware but at a much smaller scale than a hot site.

Question 11

Disaster Recovery Methods (11)

Answer 11

A backup is the process of copying and archiving data so that it is available to be restored in case the original data is lost or corrupted.

Question 12

Disaster Recovery Methods (12)

Answer 12

Full system backups back up the entire system, including everything on the hard drive.

Question 13

Disaster Recovery Methods (13)

Answer 13

Incremental backups back up only the files that have changed since the last backup and require the last full backup PLUS ALL the incremental backups to perform a restore.

Question 14

Disaster Recovery Methods (14)

Answer 14

Differential backups only back up the changes since the last full backup and require the last full backup AND the last differential to perform a restore.

Question 15

Disaster Recovery Methods (15)

Answer 15

Backups are different from replication in that backups are created to store unchanged data for a predetermined amount of time and replicas are used to create a mirrored copy of data between 2 redundant hardware devices.

Question 16

Disaster Recovery Methods (16)

Answer 16

Snapshots are used to preserve the state of a virtual machine at a specific point in time. While similar to a backup, snapshots should not be considered a replacement for traditional backups.

Question 17

High Availability (1)

Answer 17

High availability is a system design approach that ensures a system or component is continuously available for a predefined amount of time.

Question 18

High Availability (2)

Answer 18

Fault tolerance allows a computer system to function as normal in the event of a failure in one or more of the system’s components.

Question 19

High Availability (3)

Answer 19

Geoclustering allows an organization to support enterprise-level continuity by providing a system that is location independent.

Question 20

High Availability (4)

Answer 20

A system that is not highly available will fail if a single component fails.

Question 21

High Availability (5)

Answer 21

Multipathing allows the configuration of multiple paths of connectivity to a storage device, providing redundancy for the connection to the storage device.

Question 22

High Availability (6)

Answer 22

Load balancing is achieved through either software or a dedicated hardware device and distributes incoming HTTP requests across multiple web servers in a server farm to provide redundancy and maximize throughput.

Question 23

High Availability (7)

Answer 23

A mirror site can be used to create an exact copy of the original site to offset connection requests and improve performance for end users.