Ch 12- Key Terms

Question 1

Disaster recovery plan (DRP)

Answer 1

Documented set of procedures the defines how an organization can recover and protect the IT infrastructure in the event of a disaster

Question 2

Business continuity plan (BCP)

Answer 2

Documented set of procedures and information about the organization that is collected and maintained so that the organization can continue operations in the event of a disaster

Question 3

Mean time between failures (MTBF)

Answer 3

The average time a hardware component will function before failing, usually measured in hours

Question 4

Mean time to repair (MTTR)

Answer 4

The average time it takes to repair a hardware component

Question 5

Recovery time objective (RTO)

Answer 5

The maximum amount of time a system can be down after a failure or disaster

Question 6

Recovery point objective (RPO)

Answer 6

The maximum amount of time that data might be lost due to a disaster

Question 7

Redundant system

Answer 7

A system that is used as a backup to the primary system in case of failure

Question 8

Failover

Answer 8

The process of switching to a redundant system upon failure of the primary system

Question 9

Failback

Answer 9

The process of restoring operations to the primary system after a failure

Question 10

Cold site

Answer 10

A backup site used in the event of a failure, which includes only network connectivity and does not include any backups of the original site or hardware

Question 11

Warm site

Answer 11

A backup site used in the event of a failure that is somewhere between a cold site and a hot site; it includes some hardware and some backups although the backups could be a few days old

Question 12

Hot site

Answer 12

A backup site used in the event of a failure that is a duplicate of the original site with complete hardware and backups

Question 13

Full backup

Answer 13

Starting point for incremental and differential backups that can be restored independently and contains all information on the hard disk

Question 14

Incremental backup

Answer 14

A backup system that backs up the files that have changed since the last full or incremental backup and requires all incremental backups to perform a restore

Question 15

Differential backup

Answer 15

A backup system that backs up all files that have changed since the last full backup and requires the last full backup to perform a restore.

Question 16

Replica

Answer 16

A mirrored copy of data created between 2 redundant hardware devices

Question 17

Synchronous replication

Answer 17

A process of replicating information over a network to a secondary device where the system MUST WAIT for the replication to copy the data to the secondary device before proceeding

Question 18

Asynchronous replication

Answer 18

A process of replicating information over a network to a secondary device where the system IS NOT REQUIRED TO WAIT for the replication to copy the data to the secondary device before proceeding

Question 19

Snapshot

Answer 19

A method of capturing the state of a virtual machine at a specific point in time

Question 20

Fault tolerance

Answer 20

A feature of computer system design that increases reliability by adding multiple hardware components so that the system can continue to function in the event of a single component failure

Question 21

Load balancing

Answer 21

A means of distributing workloads across multiple computers to optimize resources and throughput and to prevent a single device from being overwhelmed

Question 22

Mirror site

Answer 22

A duplicate website used to provide improved performance and to reduce network traffic