Section 5: Physical Security Design And Implementa
Section 5: Physical Security Design And Implementa
Exam (elaborations)
Section 5: Physical Security Design And Implementation 2024 RPO - ANSWER-Recovery Point Objective
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Section 5: Physical Security Design And Implementa
Institution
Section 5: Physical Security Design And Implementa
Section 5: Physical Security Design And Implementation 2024
RPO - ANSWER-Recovery Point Objective
- maximum amount of data an organization can tolerate losing during an outage
RSL - ANSWER-Recovery Service Level
- percentage of a given service that must continue to be available in a disaster
R...
Section 5: Physical Security
Design And Implementation
2024
RPO - ✔✔✔ANSWER-Recovery Point Objective
- maximum amount of data an organization can tolerate losing during an outage
RSL - ✔✔✔ANSWER-Recovery Service Level
- percentage of a given service that must continue to be available in a disaster
RTO - ✔✔✔ANSWER-Recovery Time Objective
- maximum amount of time an organization can tolerate a system being down
before it is repaired
SAN - ✔✔✔ANSWER-Storage Area Network
,- network-attached disk array used for data replication (e.g. RAID) or data backups
- allows block-level access to its storage
acceptable data center fire suppression systems? - ✔✔✔ANSWER-- chemical
sprinklers (chemically remove oxygen from air, dangerous in inhabited
environments)
- dry pipe sprinklers (water-based, pipes empty until alarm triggered)
access control vestibule - ✔✔✔ANSWER-(AKA mantrap) human airlock chamber
between an unlocked door and a locked door used to prevent tailgating into
sensitive areas; locked door will not unlock (despite proper authentication) if more
than one person is in the chamber
after action report - ✔✔✔ANSWER-formal record of an incident created after
completing the disaster recovery process; identifies places for future improvements
and facilitates recognition of lessons learned
after action report sections? - ✔✔✔ANSWER-- brief executive summary (events
and major findings)
- background information (circumstances that led to the incident)
- detailed description of incident
- post-incident analysis
- conclusion/next steps (be specific for better accountability)
BCP - ✔✔✔ANSWER-Business Continuity Planning
- implementing controls to keep a business running in the face of adversity
- supports availability objective
, - in cloud environments, requires partnership between providers and customers
BIA - ✔✔✔ANSWER-Business Impact Assessment
- type of risk assessment that traces back an organization's essential functions to
identify the critical IT systems those functions depend on and determine potential
risks to those systems
- functional output: prioritized list of potentially business-disrupting risks
- used by business continuity planners
business continuity controls? - ✔✔✔ANSWER-- redundancy
- SPOF analysis (identifying and removing SPOFs)
- IT contingency planning (in the event of e.g. vendor bankruptcy, insufficient
computing capacity)
- personnel succession planning (i.e. identifying successors well in advance for
essential IT personnel)
cold site - ✔✔✔ANSWER-mostly empty disaster recovery site stocked with only
core equipment; low operational cost, high latency following disaster
common cable lock mistake? - ✔✔✔ANSWER-not properly securing the other
end of the cable
commonly-used RAID levels? - ✔✔✔ANSWER-- 0: splits data evenly across
disks without parity information; no fault tolerance, good performance
- 1: copies entire sets of data on multiple disks (AKA disk mirroring); data
recoverable if one copy is lost, good performance, inefficient use of storage
- 4: stripes blocks of data across 3+ disks with dedicated parity; data recoverable if
single disk is lost, good read performance, poor write performance
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