M14 Practice Quiz

#redundancy #power

Question 1

  1. Juan, a network administrator at Dion Training, wants to build a backup facility that is partially equipped with hardware and infrastructure to minimize downtime in case of a disaster. Which of the following types of redundant sites should they utilize?

    Options:

    • Hot site
    • Cold site
    • Warm site 
    • Mobile site

    Overall explanation:

    • A warm site is a partially equipped backup facility with essential infrastructure and hardware, requiring some setup time before it can become operational.
    • A hot site is a fully equipped backup facility with duplicate hardware and infrastructure ready for immediate use in the event of a disaster.
    • A cold site is a backup facility with minimal or no equipment, necessitating substantial setup and provisioning in the event of a disaster.
    • A mobile site is a portable, on-the-go facility that can be quickly deployed to provide backup capabilities in various locations or disaster scenarios.

    Tags: Redundant Site Considerations

Question 2

  1. In preparing their disaster response strategy, the emergency management team at Dion Training wants to facilitate a scenario-based discussion among key stakeholders to evaluate their crisis preparedness and decision-making abilities without the need for deploying actual resources. Which of the following testing method should they employ?

    Options:

    • Tabletop exercise
    • Simulation
    • Failover test
    • Parallel processing

    Overall explanation:

    • Tabletop exercises involve simulated scenario discussions among stakeholders to assess and improve crisis preparedness and response, without the need for actual resource deployment.
    • Failover tests focus on system component redundancy and recovery, simulations mimic various conditions to test system responses.
    • Parallel processing is a technique used in various testing scenarios but not specifically for scenario-based discussions like tabletop exercises.

    Tags: Resilience and Recovery Testing

Question 3

  1. Which of the following backup methods involves creating point-in-time copies of data in a storage system to capture its state at specific moments to help facilitate data recovery and system consistency?

    Options:

    • Journaling
    • Encryption
    • Replication
    • Snapshots

    Overall explanation:

    • Snapshots are point-in-time copies of data in a storage system that capture the state of the data at specific moments that enables data recovery or system consistency from those snapshots.
    • Replication is the process of creating duplicate copies of data in real-time or near-real-time, and it often is used in geographically separate locations, to ensure data availability and fault tolerance.
    • Journaling involves recording a chronological log of changes or transactions in a system, which can be used for data recovery, auditing, and error detection purposes.
    • Encryption is the process of converting data into a coded form to protect it from unauthorized access to ensure data confidentiality and security.

    Tags: Data Backups

Question 4

  1. Which power backup technology typically provides a longer duration of power supply during extended outages and is often used as a primary source of backup power for critical systems, such as data centers?

    Options:

    • Line conditioner
    • Propane generator
    • Uninterrupted power supply
    • Power distribution center

    Overall explanation:

    • A propane generator can offer extended backup power for hours or even days, making it suitable for sustaining critical systems during prolonged outages.
    • An uninterruptible power supplies (UPS) primarily provide short-term power.
    • Line conditioners are focused on stabilizing voltage quality.
    • Power distribution centers manage electrical connections but do not generate power themselves.

    Tags: Powering Data Centers

Question 5

  1. Emile, a system administrator at Dion Training, wants to optimize both the performance and data redundancy of the company's critical data storage solution. Which of the following RAID configurations should they utilize?

    Options:

    • RAID 1
    • RAID 5
    • RAID 0
    • RAID 10

    Overall explanation:

    • RAID 10, also known as RAID 1+0, is a RAID configuration that combines disk striping (RAID 0) for enhanced performance with disk mirroring (RAID 1) for redundancy, offering both improved data protection and speed by mirroring data across multiple drives and then striping them for performance.
    • RAID 0, or disk striping, is a RAID configuration that enhances data read/write speed by splitting data into blocks and distributing them across multiple drives, but it does not provide data redundancy or fault tolerance.
    • RAID 1, or disk mirroring, is a RAID configuration that duplicates data across two or more drives to ensure redundancy and fault tolerance, allowing data to be preserved even if one drive fails.
    • RAID 5 is a RAID configuration that offers a balance between data redundancy and storage efficiency by distributing data and parity information across multiple drives, providing fault tolerance and improved storage capacity.

    Tags: Data Redundancy