CompTIA Network + Disaster Recovery

Disaster Recovery

Enables software, date, or hardware recovery to resume performance of critical business functions after a disaster

Network Redundancy

Focuses on ensuring the network remains up and running at all times

Active-Active Apporach

Multiple systems will be run simultaneously to share the load and provide a seamless service even if one or more systems fail

Active-Passive Approach

Systems are configured so that the standby system remains idle until the primary system fails

Load Balancer

used to distribute network traffic across multiple servers to maintain higher levels of performance and uptime

Content Delivery Network (CDN)

Network of servers that are distributed geographically to deliver content to users more efficiently and reliably

Disaster Recovery Metrics

Quantifiable standards used to plan and evaluate an organization’s ability to recover IT operations following a disruptive event

Mean Time To Repair (MTTR)

Measures average time it takes to repair a network device when it breaks

Mean Time Between Failures (MTBF)

Measures average time between when failures occur on a device

Maximum tolerable Downtime (MTD)

Longest period of time a business can be inoperable without causing irrevocable business failures

Recovery Time Objective (RTO)

Length of time after an event to resume normal business operations and activities

Recovery Point Objective (RPO)

Longest period of time that an organization can tolerate lost data being unrecoverable

Hot Site

A fully equipped backup facility ready to swiftly take over tin a case of a primary site failure or disruption

Warm Site

A partially equipped backup site that can become operational within days of a primary site disruption

Cold Site

A site with no immediate equipment or infrastructure but can be transformed into a functional backup facility

Mobile Site

A versatile site that utilizes independent and portable units like trailers or tents to deliver recovery capabilities

Virtual Site

Utilizes clou-based environments and offers highly flexible approach to redundancy

Platform Diversity

A vital aspect in redundant site design that uses different platforms to prevent single points of failure in disaster recovery

Tableto Exercise (TTX)

Exercise that uses incident scenario against a framework of controls or a red team

Penetration Test

Test that uses active tools and security utilities to evaluate security by simulating an attack on a system to verify that a threat exists, actively test it, bypass security controls, and then finally exploit vulnerabilities on a given system

Red Team

Hostile or attacking team in a penetration test or incident response exercise

Blue Team

Defensive team in a penetration test or incident response exercise

White Team

Staff administering, evaluating, and supervising a penetration test or incident response exercise