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SecurityCHPT13
terms
| Question | Answer |
|---|---|
| business continuity | ability of an organization to maintain its operation and services in the face of a disruptive event |
| bia | business impact analysis |
| bia | analyzes the most important mission critical business functions |
| bia | identifying threats thru a risk assessment |
| disaster recovery plan | IT contingency planning |
| mttr | mean time to restore |
| mttr | average time needed to reestablish services to their previous condition |
| drp | disaster recovery plan |
| drp | written document that details the process for restoring IT resources following an event that causes a significant disruption in service |
| unit 1 | purpose and scope |
| unit 2 | recovery team |
| unit 3 | preparing for a disaster |
| unit 4 | emergency procedures |
| unit 5 | restoration procedures |
| backout contingency option | the plan is put into place but does not appear to be working properly |
| single point of failure | a component in a system,if no longer functions,will disable the entire system |
| high availability | a system that can function for an extended period of time with little downtime |
| sla | service level agreement |
| redundant servers | refers to the practice of having a secondary computer system or network device that will take over when the primary server fails. |
| server cluster | a combination of two or more servers that appear to be as one |
| symmetric server cluster | every server in the cluster performs useful work and if one server fails the remaining servers continue to perform their normal work |
| asymmetric server cluster | a technology exists in which a standby server exits only to take over for another server in event of a failure |
| two types of server clusters | asymmetric symmetric |
| asymmetric server cluster | are used to provide high availability applications that require a high level of read and write action |
| symmetric cluster | every server in the cluster performs useful work |
| mtbf | mean time between failures |
| mtbf | refers to the average time until a component fails cannot be repaired and must be replaced |
| total time measured divided by the total number of failures observed | calculating the mtbf |
| mtbf rating | used to determine the number of spare hard drives that should be stored |
| raid | redundant array of independent disks |
| raid level 0 | striped disk array withoutr fault tolerance |
| raid level 1 | mirroring |
| raid level 5 | independent disks with distributed parity |
| raid level 0+1 | high data transfer |
| raid level 0 | minimum number of drives needed 2 |
| raid level 1 | minimum number of drives needed 2 |
| raid level 5 | minimum number of drives needed 3 |
| raid level 0+1 | minimum number of drives needed 4 |
| raid level 1 | data written twice to seperate drives |
| raid level 0+1 | a mirrored array whose segments are riad 0 arrays |
| raid level 0 | uses a striped disk array so that data is broken down into blocks and each block is written to a seperate disk drive |
| raid level 5 | each entire data block is written on a data disk and parity for blocks in the same rank is generated and recorded on a seperate disk |
| hot site | a duplicate of the production site and has all the equipment needed for an organization to continue running |
| cold site | provides office space but the customer must provide equipment to continue running |
| warm site | has equipment installed but not have active internet does not keep backups |
| data backup | copying info to another medium and storing it offsite |
| backup software | can internally designate which software needs to be backed up |
| archive bit | any time the backup file is changed the bit is set to one |
| full backup | starting point for all backups |
| differential backup | back up any data that has changed since last backup |
| incremental backup | back up any data that has changed since last full or incremental backup |
| rto | recovery time objective |
| rto | maximum length of time a that an organization can tolerate between backups |
| rto | recovery time objective |
| rto | length of time it takes to recover the data that has been backed up |
| d2d2t | disk to disk disk to tape |
| d2d2t | uses the magnetic disk as a tempoary storage area |
| cdp | continuous data protection |
| cdp | performs continuous data backups that can be restored immediately |
| cdp | maintains a historical record of all the changes made to data by constantly monitoring all writes to the hard drive |
| block level cdp | entire volume protected |
| file level cdp | individual files protected |
| application level cdp | individual application changes protected |
| magnetic tape | good for high capacity backups |
| disk to disk | hard drive may be subject to failure |
| disk to disk to tape | good compromise of tape and disk to disk |
| continuous data protection | for organizations that can not afford down time |
| in order to a fire to occur you need | fuel |
| in order to a fire to occur you need | oxygen |
| in order to a fire to occur you need | heat |
| in order to a fire to occur you need | chemical reaction |
| fires are divided into five categories | class a |
| fires are divided into five categories | class b |
| fires are divided into five categories | class c |
| fires are divided into five categories | class d |
| fires are divided into five categories | class k |
| water sprinkler systems | spray the area with pressurized water |
| dry chemical systems | disperse a fine powder over the fire |
| clean agent systems | do not harm people,documents or electrical equipment in the room |
| van eck phreaking | form of eavesdropping in which special equipment is used to pick up telecommunication signals or data whichin a computer device by monitoring electromagnetic fields |
| faraday cage | metallic enclosure that prevents the entry or escape of an electromagnetic field |
| hot aisle cold aisle layout | server racks are lined up in alternating rows with cold air intakes facing one direction and hot air exhausts facing another |
| plenums | air handling space above drop ceilings |
| incident response procedures | include using forensic science and properly responding to a computer forensics event by using forensics procedures |
| computer forensics | uses technology to search for computer evidence of a crime |
| importance of computer forensics | amount of digital evidence |
| importance of computer forensics | increased scruntiny by the legal profession |
| importance of computer forensics | higher level of computer skills by criminals |
| four basic steps in forensics | secure the crime scene |
| four basic steps in forensics | collect the evidence |
| four basic steps in forensics | establish a chain of custody |
| four basic steps in forensics | examine the evidence |
| order of volatility | different data sources have different degrees of preservation |
| system image | snapshot of the current state of the computer that contains all current setings and data |
| mirror image | bitstream backup |
| mirror image | replicates all sectors of a computer hard drive,including all files and any hidden data storage area |
| chain of custody | documents that the evidence was under strict control at all times and no one messed with it |
| page file | a reserved portion of a hard disk that is used as an extension of random access memory (RAM) for data in RAM that hasn't been used recently. |
| page file | used by Windows to hold temporary data which is swapped in and out of physical memory in order to provide a larger virtual memory set. |
| slack | The space between the end of a file and the end of the disk cluster it is stored in |
| ram slack | can contain any information that has been creaed,viewed,modified,downloaded,or copied since the computer was last booted |
| file slack | it occurs naturally because data rarely fill fixed storage locations exactly, and residual data occur when a smaller file is written into the same cluster as a previous larger file. |
| metadata |
Created by:
cgeaski
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