Server Redundancy

Question 1

What is used to provide high availability for servers?

Answer 1

A server cluster or failover cluster, and load balancers

Question 2

In a failover cluster, how many servers afe used?

Answer 2

2 or more servers

Question 3

In a failover cluster, a server is known as what?

Answer 3

A node

Question 4

In a failover cluster, a server is known as what?

Answer 4

A node

Question 5

In a failover cluster, what happens when one server fails?

Answer 5

The inactive node takes over

Question 6

Cluster configurations are helpful for a company trying to achieve what percentage of uptime?

Answer 6

99.999%

Question 7

What does a load balancer do?

Answer 7

Optimizes and distributes loads across multiple computers or servers.

Question 8

Is a load balancer restricted to hardware?

Answer 8

A load balancer can be hardware or software.

Question 9

What factors does a hardware load balancer use?

Answer 9

Processor utilization or number of current connections to the server

Question 10

Besides high availability, what does load balancing primarily give?

Answer 10

Scalability

Question 11

What is scalability?

Answer 11

Ability for a system to take more clients without a decrease in performance.

Question 12

Load balancers are also able to detect what?

Answer 12

Server failure (and stop directing traffic to that failed server).

Question 13

In a system where servers must share the same storage, what is more appropriate?

Answer 13

A failover cluster

Question 14

In what type of system is a load balancer more apt, and less expensive?

Answer 14

A system whose servers does not need to share the same storage