When planning high availability, which two components are important to minimize the effect of outages? (Choose two.)
A.
work staff attributes, such as skills and communication
B.
redundancy, to prevent single points of failure
C.
processes, such as documentation, change control, and labs
D.
appropriate technology, such as hardware and software
E.
tools, such as those for monitoring and reporting
I think , that right answers are C and E.
from book
Implementing Cisco IP Switched Networks (SWITCH) Foundation Learning Guide
Chapter 5. Implementing High Availability and Redundancy in a Campus Network
Redundancy designs (answer B)attempt to eliminate single points of failure, where one failed device or design element brings down service.
Techniques (answer D) exist to detect failure and trigger failover to a redundant device.
With proper failover, services should continue operating when single components fail. Without component monitoring, a failure to detect and replace a failed redundant component can lead to an outage when the second component subsequently fails.
Network diagrams help in planning and in fixing outages more quickly.
But question was “minimize the effect of outages”, then answers B and D are not right.
I think , that right answers are C and E.
If you were to HAVE an outage, it means that your well planned redundant $10Mil equipment has already failed. Say your best engineers are out of the country and the backbone is down,
b) the redundancy will no longer help you when it is broken/down any faster
d) the best gear possible, when broken/down, will not solve the problem any faster
e) monitoring and reporting tools won’t help you fix a problem you already know exists any faster
The way such an outage gets resolved fastest is highly dependent on (a) the staff communication and skills and (c) documentation, change control, and labs. Therefore, in my opinion, the best answers are A and C.
The answers shown here are to minimize the RISK of outage, not EFFECT.
“When planning for HA, to minimize the RISK of potential outages, it is critical to use the appropriate technology as well as redundancy within that technology to prevent single points of failure.”