Module 6: System Resiliency

Question 1

is the ability of a system to withstand a major disruption within set metrics and recovery times.

Answer 1

System resilience

Question 2

Application Resiliency: Protecting an application also entails what?

Answer 2

The ability to restore it quickly

Question 3

Application Resiliency: What is the difference between clustering and a cluster

Answer 3

Clustering is the process
Cluster is the software

Question 4

Application Resiliency: What are the two types of Application Clusters?

Answer 4

Active-Passive and Active-Active

Question 5

Application Resiliency: What is the difference between active-passive and active-active?

Answer 5

Active-passive only one node is running the application at a point in time, and only switches to another node when the node fails

Active-active has all nodes running the application

Question 6

Application Resiliency: Which type of application cluster does not need any special setup from the application side?

Answer 6

Active-passive

Question 7

Application Resiliency: Which type of application cluster does not experience downtime

Answer 7

Active-active

Question 8

Application Resiliency: What is the role of an agent in each type of application cluster?

Answer 8

1. Active-Passive - restart the application on another node once it notices that the active node is down
2. Active-active - info coordination, data access, and load balancing

Question 9

Application Resiliency: What is the most common set up for applications?

Answer 9

A combination of both cluster types

Question 10

Application Resiliency: combination of cluster setups usually mean having a _____ for a specific processing site and ____ for between sites

Answer 10

active active; active passive

Question 11

Application Resiliency: Determine which cluster type is used for the scenario - Local software or hardware failure

Answer 11

Active Active

Question 12

Application Resiliency: Determine which cluster type is used for the scenario - site failure

Answer 12

Active-Passive

Question 13

Application Resiliency: Active-active clusters replicate their data among nodes (T or F)

Answer 13

False. They are required to share the same storage

Question 14

Telco Resiliency: Telco Networks and Data center are susceptible to?

Answer 14

Natural Disasters

Question 15

Telco Resiliency: Telco Networks and data centers share all the same risks (T or F)

Answer 15

False

Question 16

Teclo Resiliency: Telecommunication networks are ______ in large and small organizations;
therefore, the procedures to ensure continuous
telecommunication capabilities should be given _______

Answer 16

key to business
processes; a high priority.

Question 17

Telco Resiliency: Providing extra capacity with a plan to use the
surplus capacity if the normal primary
transmission capability is not availabl

Answer 17

redundancy

Question 18

Telco Resiliency: a method which uses a different medium or a network provider

Answer 18

Alternative routing

Question 19

Telco Resiliency: provides redundancy for local communication loop

Answer 19

Last-mile circuit protection

Question 20

Telco Resiliency: redundancy for long-distance availability

Answer 20

Long haul network diversity

Question 21

Telco Resiliency: this method of routing traffic split or duplicate cable facilities with different and or duplicate cable sheeths

Answer 21

Diverse routing

Question 22

Telco Resiliency: Diverse routing is subject to the same interruptions because?

Answer 22

the cable may be in the same conduit

Question 23

Telco Resiliency: providing multiple paths for traffic so that data can keep flowing even in the event of failure

Answer 23

Redundancy

Question 24

Telco Resiliency: redundant cabling and VOIP

Answer 24

Voice recovery

Question 25

Telco Resiliency: clusters spanning a city

Answer 25

Metro-clusters

Question 26

Telco Resiliency: clusters spanning multiple cities

Answer 26

Geo-clusters