What is the purpose of fault injection in resiliency testing?

To reduce the cost of the system

To replace the need for monitoring

To increase the system's performance

To verify the system can handle a specific type of failure

A company runs a stateful application on a single virtual machine in a cloud provider's region. The application stores data locally on the VM's disk. The company wants to improve resiliency against a single hardware failure. Which change should they make first?

Move the application to a managed database service with automatic failover and store the data in a separate availability zone.

Enable auto-scaling on the VM to automatically add more instances if the CPU usage is high.

Take a snapshot of the VM's disk every hour and store it in a different region.

Attach a second virtual disk to the VM and configure RAID 1 to mirror the data.

CiscoCertified DevNet Professional

Domain 1Objective 3

Evaluate an Application Design Considering High-Availability and Resiliency (including On-Premises, Hybrid, and Cloud) 350-901 Practice Questions (Page 3)

Part of the 1.0 Software Development and Design domain, which accounts for 20% of the 350-901 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–1 from this objective — we provide 36 practice questions to prepare you well beyond it. (estimate)

36questions here

8free pages

13concepts

20%of the exam

Questions 11–15

11foundation · easy
What is the purpose of fault injection in resiliency testing?
Select an answer first
12application · medium
A company runs a stateful application on a single virtual machine in a cloud provider's region. The application stores data locally on the VM's disk. The company wants to improve resiliency against a single hardware failure. Which change should they make first?
Select an answer first
13foundation · easy
Which capacity planning strategy involves adding more resources to an existing server (e.g., more RAM or CPU)?
Select an answer first
14foundation · easy
Which resiliency principle is primarily achieved by deploying multiple identical application servers behind a load balancer?
Select an answer first
15foundation · easy
Which disaster recovery strategy maintains a scaled-down but fully functional version of the application environment that can be scaled up quickly in a disaster?
Select an answer first

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Evaluate an Application Design Considering High-Availability and Resiliency (including On-Premises, Hybrid, and Cloud) 350-901 Practice Questions (Page 3)

Questions 11–15

What is the purpose of fault injection in resiliency testing?

A company runs a stateful application on a single virtual machine in a cloud provider's region. The application stores data locally on the VM's disk. The company wants to improve resiliency against a single hardware failure. Which change should they make first?

Which capacity planning strategy involves adding more resources to an existing server (e.g., more RAM or CPU)?

Which resiliency principle is primarily achieved by deploying multiple identical application servers behind a load balancer?

Which disaster recovery strategy maintains a scaled-down but fully functional version of the application environment that can be scaled up quickly in a disaster?

Keep studying — 1.0 Software Development and Design