Storage Advanced Quiz 2
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Practice Pronunciation (Merriam-Webster)
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Quiz 2
1. What distinguishes a "Shared-Nothing" architecture in storage clusters?
All cluster nodes share a single physical backplane and power supply unit
Each node has no local memory and relies on a central master controller node
Each node has private processors and disk, communicating solely via the network
2. What is "Storage Class Memory" (SCM) positioned to bridge?
The internal latency gap between the L2 and L3 hardware CPU cache layers
The performance gap between traditional NAND Flash and system DRAM memory
The physical distance between local data center storage and cloud-based tiers
3. What does "Object Versioning" protect against?
Accidental overwrites or deletions by keeping historical states of an object
Hardware failure of a specific SSD within a highly distributed object bucket
Unauthorized user access by encrypting each new version of a file individually
4. What is the role of "ALUA" (Asymmetric Logical Unit Access) in a SAN?
It compresses block-level data based on historical metadata access patterns
It allows a host to identify the optimized path to a volume among multiple paths
It provides end-to-end encryption for data traveling over a Fibre Channel fabric
5. What is the primary benefit of "Log-Structured Merge-Trees" (LSM Trees)?
They provide the fastest possible random read speeds for unstructured data sets
They eliminate the need for maintaining metadata tables in large-scale databases
They turn random writes into sequential writes to maximize throughput on Flash
6. What is "Synchronous Replication" in disaster recovery?
Data is written to both sites before the write operation is finally acknowledged
Data is copied to the remote site periodically based on a scheduled RPO window
Data is replicated to the cloud only when the primary server is in an idle state
7. Why is "Erasure Coding" preferred over RAID in large-scale object storage?
Because it is significantly simpler to configure on a single desktop workstation
Because it offers higher durability with less overhead than traditional mirroring
Because it does not require any CPU or mathematical calculations for data parity
8. What is a "Storage Gateway"?
A physical security entrance used to protect a Tier-3 or Tier-4 data center room
A low-level protocol used to connect two internal hard drives within an array
A bridge that connects on-premises applications to remote cloud-based storage
9. What is "Multi-Tenancy" in a storage array?
Isolating resources so multiple customers can securely share one physical array
Enabling multiple administrators to manage the same volume across a cluster
Moving mission-critical data between three or more automated storage tiers
10. What does the "QoS" (Quality of Service) "Throttle" or "Limit" prevent?
It prevents the storage controllers from exceeding safe thermal operating limits
It prevents "noisy neighbors" from consuming all IOPS and impacting workloads
It prevents unauthorized users from viewing sensitive metadata and file names
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