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Security + > 3,4 > Flashcards

3,4 Flashcards

1
Q

Cyber Resilience

A

ability to deliver outcomes despite adverse events

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2
Q

Redundancy

A

having additional systems or processes for continued functionality

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3
Q

High Availability

A

aims to keep services continuously available by minimizing downtime achieved through load balancing, clustering, redundancy and multi cloud strategies

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4
Q

Uptime

A

the time a system remains online

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5
Q

Give nines

A

refers to 99.999 uptime only allowing 5 min of downtime per year

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6
Q

six nines just 31 seconds of downtime per year

A
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7
Q

Load balancing

A

distributes workload across resources

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8
Q

Clustering

A

uses multiple computers, storage devices and network connections as a single systemRe

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9
Q

Redundancy

A

involves duplicating critical components to increase system reliability

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10
Q

Raid

A

redundant array of independent disks
combines physical storage devices into a single storage device recognized by the OS

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11
Q

RAID 0

A

striping

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12
Q

RAID 1

A

mirroring

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13
Q

RAID 5

A

striping with parity

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14
Q

RAID 6

A

similar to 5 but with double parity

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15
Q

RAID 10

A

combines 1 and 0 mirroring and striping

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16
Q

RAID Resilience Categoires

A

failure resistant - resists hardware malfunctions through redundancy (raid 1)
fault tolerant - allows continued operation and quick data rebuild in case of failure (raid 1 5 6 and 10)
disaster tolerant- safeguards against catetropic events by maintaining data in indepedent zones raid 1 and 10

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17
Q

Capacity Planning

A

Critical strategic planning effort for organizations
■ Ensures an organization is prepared to meet future demands in a cost-effective
manner

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18
Q

Aspects of Capacity Planning

A

People
technology
infrastructure
processes

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19
Q

Surge

A

sudden small increases in voltage beyond standard level

20
Q

spike

A

short lived voltage increases lighting, tripped breakers etc

21
Q

Sags

A

brief decrease in voltage enough to cause system shutdown

22
Q

Undervoltage event

A

brownout
prolonged reduction leading to system shutdown

23
Q

Power loss event

A

blackout

24
Q

line conditioner

A

stabilize voltage supply and filter out fluctiations
mitigate surges, sags and undervoltage events
unsuitable for significant undervoltage events or complete power failures

25
Q

UPS

A

Uninterruptible Power Supplies (UPS)
● Provide emergency power during power source failures
● Offer line conditioning functions
● Include battery backup to maintain power during short-duration failures
● Typically supply 15 to 60 minutes of power during a complete power failure

26
Q

Generator

A

Convert mechanical energy into electrical energy for use in an externalcircuit through the process of electromagnetic induction
● Backup generators supply power during power grid outages
● Smaller generators for limited applications (e.g., emergency lighting)

27
Q

Types of generators

A

Portable gas-engine generators
○ Permanently installed generators
○ Battery-inverter generator

28
Q

PDC

A

Power distribution center
Central hub for power reception and distribution
● Includes circuit protection, monitoring, and load balancing
● Integrates with UPS and backup generators for seamless transitions during power event

29
Q

RPO

A

ecovery Point Objective (RPO)
○ Ensures that the backup plan will maintain the amount of data required to keep any data loss under the organization’s RPO
threshold

30
Q

Snapshots

A

Records only changes since the previous snapshot, reducing storage requirement
Point-in-time copies capturing a consistent state

31
Q

Replication

A

real time or near real time replication of data in case of loss of system failure

32
Q

Replication

A

real time or near real time data copying to maintain data continuity

33
Q

Journaling

A

Maintaining a detailed record of data changes over time

34
Q

COOP

A

Ensures an organization’s ability to recover from disruptive events or disasters
■ Requires detailed planning and forethought

35
Q

BC Plan

A

business continuity planning
Plans and processes for responding to disruptive events
● Addresses a wide range of threats and disruptive incidents
● Involves preventative actions and recovery steps
● Can cover both technical and non-technical disruptions

36
Q

DRP

A

disaster recovery plan
Focuses on plans and processes for disaster response
● Subset of the BC Plan
● Focuses on faster recovery after disasters
● Addresses specific events like hurricanes, fires, or flood

37
Q

Redundant Site

A

Backup location or facility that can take over essential functions and operations
in case the primary site experiences a failure or disruptio

38
Q

Hot site

A

Up and running continuously, enabling a quick switchover
● Requires duplicating all infrastructure and data
● Expensive, but provides instant availabilit

39
Q

Warm site

A

Not fully equipped, but fundamentals in place
● Can be up and running within a few days
● Cheaper than hot sites but with a slight dela

40
Q

Cold Site

A

Fewer facilities than warm sites
● May be just an empty building, ready in 1-2 months
● Cost-effective but adds more recovery time

41
Q

Mobile Site

A

Can be hot, warm, or cold
● Utilizes portable units like trailers or tents
● Offers flexibility and quick deployment (e.g., military DJC2)

42
Q

Resilience Testing

A

Assess system’s ability to withstand and adapt to disruptive events
■ Ensures the system can recover from unforeseen incidents
■ Conducted through tabletop exercises, failover tests, simulations, and parallel
processing
■ Helps prepare for events like power loss, natural disasters, ransomware attacks,
and data breache

43
Q

Recovery Testing

A

Evaluates the system’s capacity to restore normal operation after a disruptive
even

44
Q

Tabletop Exercise

A

Scenario-based discussion among key stakeholders
■ Assess and improve an organization’s preparedness and response
■ No deployment of actual resources
■ Identifies gaps and seams in response plans
■ Promotes team-building among stakeholders

45
Q

Failover Tests

A

ontrolled experiment for transitioning from primary to backup components
■ Ensures uninterrupted functionality during disasters
■ Requires more resources and time
■ Validates the effectiveness of disaster recovery plans
■ Can identify and rectify issues in the failover process

46
Q

Simulations

A

Computer-generated representation of a real-world scenario
■ Allows for hands-on response actions in a virtual environment
■ Assesses incident responders and system administrators in real-time
■ Helps evaluate reactions and staff performance
■ Provides feedback for learning and improvement

47
Q

Parallel Processing

A

Replicates data and system processes onto a secondary system
■ Runs primary and secondary systems concurrently
■ Tests reliability and stability of the secondary setup
■ Ensures no disruption to day-to-day operations
■ Assesses the system’s ability to handle multiple failure scenarios simultaneousl

Security + (33 decks)

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