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Q141. Which storage model manages data as objects with metadata

1. Block storage
2. Object storage
3. File storage
4. Tape storage

Correct Answer: 2. Object storage

Explanation:

Object storage manages information as objects that contain the data itself together with metadata and a unique identifier. This model is useful for storing large amounts of unstructured information such as images, documents, backups, and media files. Block storage divides information into blocks, while file storage organizes information using files and directories. Tape storage is mainly used for backup and long term retention. Object storage is therefore the correct answer because it uses an object based structure rather than blocks or traditional file hierarchies. This architecture can provide strong scalability for large storage environments.

Q142. Which method distributes object data across nodes for fault tolerance

1. Formatting
2. Caching
3. Mapping
4. Erasure coding

Correct Answer: 4. Erasure coding

Explanation:

Erasure coding divides data into fragments and creates additional recovery fragments that are distributed across multiple storage nodes or devices. If some fragments become unavailable, the missing information can be reconstructed from the remaining fragments. This provides fault tolerance while often using less additional capacity than complete data copies. Formatting prepares storage for use. Caching improves access performance. Mapping controls how storage resources are presented. Erasure coding is therefore the correct answer because it specifically protects distributed data by using calculated recovery information. It is commonly associated with scalable storage systems that need both resilience and efficient capacity usage.

Q143. Which value identifies an object uniquely in object storage

1. Object identifier
2. Cache page
3. RAID stripe
4. Host port

Correct Answer: 1. Object identifier

Explanation:

An object identifier uniquely identifies a stored object so the system can locate and retrieve the correct information. In object storage, each object usually contains data, metadata, and a unique identifier. This design allows very large numbers of objects to be managed without requiring the traditional directory structure used by file systems. A cache page is temporary memory space. A RAID stripe describes data distribution across disks. A host port provides connectivity between systems. Object identifier is therefore the correct answer because it distinguishes one stored object from another and allows applications to request the required information accurately.

Q144. Which access method is commonly used by applications to communicate with object storage

1. Fibre Channel zoning
2. SAS connection
3. REST interface
4. Tape rotation

Correct Answer: 3. REST interface

Explanation:

A REST interface is commonly used by applications to communicate with object storage through standard network requests. Applications can use the interface to create, retrieve, modify, or remove objects according to supported operations. This approach makes object storage suitable for cloud applications, web services, backup platforms, and large scale unstructured data environments. Fibre Channel zoning controls communication in a storage network. SAS connects storage devices directly. Tape rotation manages backup media. REST interface is therefore the correct answer because it provides an application friendly method for accessing object storage services through network based requests.

Q145. Which data type is most suitable for object storage

1. Boot volume
2. Database log only
3. Swap space
4. Large unstructured data

Correct Answer: 4. Large unstructured data

Explanation:

Object storage is especially suitable for large volumes of unstructured information such as images, videos, documents, backups, and archived content. It can scale to very large capacities while using metadata to describe and organize stored objects. Boot volumes and swap space normally require block storage because operating systems expect direct block access. Database logs also commonly use block storage because of performance and consistency requirements. Large unstructured data is therefore the correct answer because object storage is designed to manage massive collections of independent objects efficiently and can support applications that need scalable storage for content that does not fit traditional structured formats.

Q146. Which feature protects stored objects from accidental deletion for a defined period

1. Read cache
2. Retention policy
3. Path balancing
4. Thin allocation

Correct Answer: 2. Retention policy

Explanation:

A retention policy defines how long protected data must remain stored before it can be deleted or modified according to the configured rules. This is useful for archive, compliance, backup, and governance requirements where information must remain available for a specific period. Read cache improves performance by keeping frequently accessed information in faster memory. Path balancing distributes storage traffic. Thin allocation improves capacity utilization. Retention policy is therefore the correct answer because it controls how long protected objects or files must remain preserved. Proper retention settings can help prevent accidental deletion and support business or regulatory data preservation requirements.

Q147. Which component stores descriptive information about an object

1. Metadata
2. parity disk
3. Host adapter
4. Cache battery

Correct Answer: 1. Metadata

Explanation:

Metadata stores descriptive information about an object, such as its name, type, creation time, ownership, or application specific attributes. Object storage relies heavily on metadata because it provides context that helps applications search, classify, and manage large collections of information. A parity disk is associated with data protection in some RAID designs. A host adapter provides connectivity between a server and storage network. A cache battery protects cached information during power problems. Metadata is therefore the correct answer because it describes the stored object and provides information beyond the raw data itself, making object management more flexible.

Q148. Which technique improves availability by storing copies on separate nodes

1. Formatting
2. Compression
3. Replication
4. Mapping

Correct Answer: 3. Replication

Explanation:

Replication improves availability by maintaining additional copies of data on separate nodes or storage systems. If one node becomes unavailable, another copy can still provide access to the information. This can also support disaster recovery when copies are stored in different physical locations. Formatting prepares storage for use. Compression reduces the amount of physical capacity needed. Mapping controls storage presentation to hosts. Replication is therefore the correct answer because it creates multiple copies that can continue serving data after certain failures. In distributed storage environments, replication is a common method for improving resilience and protecting important application information.

Q149. Which metric shows how much usable storage capacity remains available

1. Latency
2. Free capacity
3. Queue depth
4. Port speed

Correct Answer: 2. Free capacity

Explanation:

Free capacity represents the amount of usable storage space that has not yet been allocated or consumed. Administrators monitor this value to determine how much room remains for new data, applications, snapshots, or other storage services. Low free capacity can create operational risk if applications continue to grow without additional resources. Latency measures response time. Queue depth describes the number of outstanding storage requests. Port speed measures communication capability. Free capacity is therefore the correct answer because it directly indicates how much storage space is still available for future use and helps administrators plan timely expansion before capacity becomes exhausted.

Q150. Which feature moves less active data to lower cost storage automatically

1. Cloning
2. Encryption
3. LUN masking
4. Automatic tiering

Correct Answer: 4. Automatic tiering

Explanation:

Automatic tiering moves data between different classes of storage according to activity levels and performance requirements. Frequently accessed information can remain on faster media, while less active data can be moved to lower cost capacity. This helps balance application performance with storage expense. Cloning creates another usable data copy. Encryption protects confidentiality. LUN masking controls host visibility to logical storage. Automatic tiering is therefore the correct answer because it dynamically places information on the most appropriate storage media according to workload behavior. This can improve resource utilization while keeping expensive high performance capacity available for data that benefits from it most.

Q151. Which value represents the number of outstanding storage requests

1. Capacity
2. Bandwidth
3. Queue depth
4. Recovery time

Correct Answer: 3. Queue depth

Explanation:

Queue depth represents the number of storage requests waiting or being processed at a particular time. A higher queue depth can indicate that a host is sending many operations concurrently, although excessively high values may also contribute to increased response time depending on the storage system. Capacity measures available storage space. Bandwidth measures the amount of data transferred during a period. Recovery time describes how long service restoration takes. Queue depth is therefore the correct answer because it specifically describes the number of outstanding input and output requests. Monitoring queue depth can help administrators understand workload pressure and diagnose performance issues.

Q152. Which function limits the effect of one heavy workload on other applications

1. Performance control
2. Disk formatting
3. File renaming
4. Host scanning

Correct Answer: 1. Performance control

Explanation:

Performance control limits how much storage performance a workload can consume or guarantees resources for important applications. This prevents one demanding workload from using excessive input and output capability and negatively affecting other applications on the same storage system. Disk formatting prepares storage resources for use. File renaming changes file names. Host scanning searches for connected storage devices. Performance control is therefore the correct answer because it manages shared storage resources according to workload requirements. This capability is useful in environments where several applications have different priorities and service expectations but share the same physical storage infrastructure.

Q153. Which process removes inactive data from primary storage for long term retention

1. Caching
2. Striping
3. Mirroring
4. Archiving

Correct Answer: 4. Archiving

Explanation:

Archiving moves inactive or rarely used data from primary storage to a location intended for long term retention. This can reduce the amount of expensive primary capacity consumed by information that must be preserved but is not frequently accessed. Archived data may be stored on lower cost disks, object storage, or tape depending on business requirements. Caching temporarily stores active information for faster access. Striping distributes data across disks. Mirroring creates redundant copies. Archiving is therefore the correct answer because it focuses on long term preservation of inactive data while helping free primary storage resources for more active workloads.

Q154. Which approach helps verify that restored application data is usable

1. Capacity expansion
2. Recovery validation
3. Port zoning
4. Disk encryption

Correct Answer: 2. Recovery validation

Explanation:

Recovery validation confirms that restored data is complete, consistent, and usable by the application after a recovery operation. A backup or replicated copy has limited value if the restored information cannot support normal application functions. Validation may include checking files, databases, application startup, and user access. Capacity expansion adds storage space. Port zoning controls Fibre Channel communication. Disk encryption protects stored information. Recovery validation is therefore the correct answer because it verifies the practical success of the recovery process rather than simply confirming that data was copied. Regular validation improves confidence in disaster recovery and backup procedures.

Q155. Which value shows how much data a port transfers during a period

1. Capacity
2. Queue depth
3. Throughput
4. Retention time

Correct Answer: 3. Throughput

Explanation:

Throughput measures the amount of data transferred through a storage interface or system during a period. It is commonly used when evaluating workloads that move large amounts of information, such as backup, media processing, and sequential file access. Capacity describes how much information can be stored. Queue depth measures outstanding operations. Retention time defines how long information must remain preserved. Throughput is therefore the correct answer because it focuses directly on the volume of data transferred over time. Monitoring throughput can help administrators identify busy ports and determine whether network or storage bandwidth is sufficient for application requirements.

Q156. Which practice reduces risk before making a major storage configuration change

1. Record the current configuration
2. Disable all alarms
3. Delete existing logs
4. Remove all spare disks

Correct Answer: 1. Record the current configuration

Explanation:

Recording the current configuration before a major change provides a reference that can help administrators restore previous settings or understand what was modified if problems occur. Good change management also includes planning, backups, validation, and clearly documented rollback procedures. Disabling alarms removes useful warnings. Deleting logs removes troubleshooting information. Removing spare disks reduces protection rather than improving safety. Recording the current configuration is therefore the correct answer because it supports controlled change management and makes troubleshooting easier if the new configuration causes unexpected behavior. Documentation is especially important in complex storage environments with many interconnected resources and dependencies.

Q157. Which device supplies backup electrical power during a short external power failure

1. Fibre switch
2. UPS
3. Disk enclosure
4. HBA

Correct Answer: 2. UPS

Explanation:

A UPS provides temporary electrical power when the normal external power source fails. This can keep storage systems and related equipment operating long enough for backup power to start or for systems to shut down safely. It can also help protect equipment from certain power quality problems. A Fibre switch connects storage network devices. A disk enclosure contains storage drives. An HBA connects a host to a storage network. UPS is therefore the correct answer because its primary purpose is providing temporary backup electrical power. Reliable power protection is important because unexpected shutdowns can interrupt storage services and place active operations at risk.

Q158. Which process checks whether a remote recovery site can run critical workloads

1. Formatting
2. Deduplication
3. Compression
4. Disaster recovery drill

Correct Answer: 4. Disaster recovery drill

Explanation:

A disaster recovery drill tests whether systems, data, procedures, and personnel can successfully restore critical services at a recovery site. It helps identify missing dependencies, configuration problems, documentation gaps, or recovery steps that do not work as expected. Formatting prepares storage for use. Deduplication removes repeated information. Compression reduces storage space consumption. Disaster recovery drill is therefore the correct answer because it tests the complete recovery process rather than only checking whether backup data exists. Regular drills improve preparedness and help organizations confirm that recovery objectives can be met when an actual site failure or major service interruption occurs.

Q159. Which action helps reduce risk when replacing a storage component

1. Follow maintenance procedures
2. Ignore active alarms
3. Remove random cables
4. Disable all redundancy

Correct Answer: 1. Follow maintenance procedures

Explanation:

Following documented maintenance procedures reduces the risk of service interruption, hardware damage, and configuration errors when replacing a storage component. Proper procedures normally include identifying the failed part, confirming redundancy, checking system status, replacing the correct component, and validating normal operation afterward. Ignoring alarms can hide important problems. Removing random cables can interrupt storage connectivity. Disabling redundancy increases risk during maintenance. Following maintenance procedures is therefore the correct answer because it provides a controlled and repeatable method for performing hardware work safely. Careful maintenance practices are especially important in production storage systems supporting critical applications.

Q160. Which storage design spreads services across multiple nodes for growth

1. Direct attach
2. Single controller
3. Scale out architecture
4. Offline archive

Correct Answer: 3. Scale out architecture

Explanation:

A scale out architecture grows by adding additional nodes that contribute resources such as processing capacity, storage space, or network capability. Services can be distributed across these nodes, allowing the environment to expand gradually as workload requirements increase. Direct attached storage connects resources to a single host and has limited shared scalability. A single controller does not provide the same distributed growth model. Offline archive focuses on long term data retention. Scale out architecture is therefore the correct answer because it supports horizontal expansion through additional nodes and can provide flexible growth for large storage environments.