2.5 Implement Cybersecurity Resilience Flashcards
Give the characteristics of RAID 0
Striping without parity
High performance
no fault tolerance
Describe the characteristics of RAID 1.
Mirroring
duplicated data for fault tolerance
requires twice the disk space
Striping with parity
fault tolerant
Only requires an additional disk for redundancy
RAID 5
How do you annotate a RAID configuration that includes multiple different RAID types?
RAID 0+1, RAID 1+5, etc
The concept of creating aggregate bandwidth and redundant paths on a network. Particularly important in logical network setups.
Load balancing/fail over (LBFO)
The concept of grouping multiple network interface cards to logically show as a single adapter. If the primary card fails the next in the group picks up the traffic.
NIC Teaming
What are 4 common methods to provide power redundancy?
UPS
Generator
Dual Power supplies
Power distribution unit (PDU)
This type of network provides a high-performance network of storage devices. Allows for incredibly fast replication speeds as compared to traditional backups.
Storage area network (SAN) replication
The process of maintaining a single virtual machine and replicating out to all other virtual machines. Generally only replicates the changes rather than the entire system in the event of a change.
VM replication
Replication: On-prem vs. cloud: Which is faster?
Local devices are faster
Cloud connections can be slow/internet speed restricted
Replication: On-prem vs. cloud: Which is cheaper?
Cloud costs have low entry points and easily scale
On-prem storage can be very expensive
Replication: On prem vs. cloud: Which is more secure?
Local data stays private
Cloud requires additional security controls
Name the backup type:
- All selected data is backed up
- High backup size/low restore time
- Archive attribute: cleared
Full backup
Backup type:
- New files and files modified since last backup
- Low backup size/High restore time
- Archive attribute: cleared
Incremental backup
Backup type:
- All data modified since last full backup
- Moderate backup size/moderate restore time
- Archive attribute: not cleared
What type of back up is always taken first?
Full backup
What is the difference between a NAS and a SAN?
Network attached storage (NAS):
- single device to be accessed across network
- file-level access
Storage area network (SAN):
- looks/feels like a storage device
- block-level access
- fast read/write speeds
What is the biggest restriction on cloud based backup solutions?
Bandwidth
The process of capturing an exact replica of everything on a storage drive to include OS files and user documents.
Image
What does it mean for the cloud to be in a constant state of non-persistence?
Data is always in motion
Instances are constantly being built/torn down
What does a cloud snapshot allow you to do?
Capture current configurations or the complete state of a device at a single moment in time
True or false: A rollback does not modify data, but simply reverts the system to a previous configuration.
True
True or false: high redundancy means high availability.
False
What does it mean for a system to have high availability?
Always on, always available
What does it mean to have an application-specific order of restoration?
Certain applications will have a higher priority and need to be restored first
(i.e. databases should be restored before the associated application)
What is the order of restoration for incremental backups?
Restore the full backup
Restore all subsequent incremental backups
What is the order of restoration for a differential backup?
Restore the full backup
Restore the last differential backup
What is the most effective way to ensure your organization maintains a high level of resiliency?
Implement defense in depth (combine multiple controls: administrative, physical, technical, etc.)
