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Q101. Which iSCSI security method authenticates an initiator before access

1. FTP
2. DNS
3. CHAP
4. NFS

Correct Answer: 3. CHAP

Explanation:

CHAP is an authentication method that can be used with iSCSI connections to verify the identity of an initiator before storage access is allowed. It uses a shared secret and a challenge response process instead of transmitting the password directly across the network. This improves security for IP based block storage connections. FTP transfers files between systems. DNS performs name resolution. NFS provides network file sharing services. CHAP is therefore the correct answer because it specifically provides authentication for communication sessions such as iSCSI. Proper authentication helps prevent unauthorized hosts from connecting to protected storage resources.

Q102. Which identifier represents a Fibre Channel node rather than an individual port

1. WWNN
2. IP address
3. WWPN
4. VLAN

Correct Answer: 1. WWNN

Explanation:

WWNN identifies a Fibre Channel node, while WWPN identifies an individual Fibre Channel port on that node. A storage controller or host adapter may have one node identifier and several port identifiers depending on its design. These identifiers are important when configuring Fibre Channel environments and managing connectivity. A VLAN identifies a logical Ethernet network. An IP address identifies an interface on an IP network. WWNN is therefore the correct answer because it identifies the Fibre Channel node itself rather than one specific communication port. Understanding the difference between WWNN and WWPN is important during storage network configuration and troubleshooting.

Q103. Which process reconstructs missing RAID data after a drive failure

1. Compression
2. Provisioning
3. Encryption
4. Reconstruction

Correct Answer: 4. Reconstruction

Explanation:

Reconstruction restores missing RAID data after a disk failure by using information from the remaining healthy disks and available redundancy. Depending on the RAID level, the system may use mirrored data or parity information to rebuild the lost content onto a replacement or spare disk. This process is important because the RAID group may operate with reduced protection until reconstruction is complete. Compression reduces storage consumption. Encryption protects confidentiality. Provisioning creates and assigns storage resources. Reconstruction is therefore the correct answer because it specifically rebuilds data that became unavailable when a member disk failed within a protected RAID configuration.

Q104. Which technology prevents a host from seeing unauthorized LUNs

1. Caching
2. LUN masking
3. Compression
4. Striping

Correct Answer: 2. LUN masking

Explanation:

LUN masking controls which logical storage units are visible to specific hosts. It helps ensure that a server can access only the LUNs assigned to it and cannot accidentally use storage intended for another system. This is especially important in shared storage environments where many hosts connect to the same storage array. Caching improves performance. Striping distributes data across disks. Compression reduces physical capacity usage. LUN masking is therefore the correct answer because it directly restricts host visibility and access to logical storage resources. Proper LUN masking improves security and reduces the risk of accidental storage access conflicts.

Q105. Which disk can automatically replace a failed RAID member

1. Hot spare
2. File share
3. Cache line
4. Host group

Correct Answer: 1. Hot spare

Explanation:

A hot spare is a reserved disk that can automatically replace a failed member of a protected RAID group. When a drive fails, the storage system can begin rebuilding the lost data onto the spare without waiting for an administrator to install another disk. This reduces the amount of time the RAID group remains in a degraded state. A cache line is temporary memory storage. A host group organizes connected servers. A file share provides network file access. Hot spare is therefore the correct answer because it is specifically reserved to take over when a protected disk fails and reconstruction needs to begin quickly.

Q106. Which value indicates how heavily a storage resource is being used

1. Capacity
2. RPO
3. Latency
4. Utilization

Correct Answer: 4. Utilization

Explanation:

Utilization indicates how much of a storage resource is currently being used compared with its available capability. Administrators may monitor disk, controller, processor, port, or capacity utilization to identify heavily loaded resources. High utilization can indicate potential performance or capacity problems when it remains elevated for long periods. Latency measures response time. Capacity describes how much storage is available. RPO defines the acceptable amount of data loss in a recovery plan. Utilization is therefore the correct answer because it expresses the degree to which a resource is being consumed and helps administrators determine whether additional resources or workload adjustments are required.

Q107. Which Fibre Channel login occurs between a device and a switch fabric

1. Device login
2. Fabric login
3. Port mapping
4. Host masking

Correct Answer: 2. Fabric login

Explanation:

Fabric login occurs when a Fibre Channel device connects to a switch fabric and establishes communication with the network. During this process, the device receives information required to participate in the Fibre Channel environment. Additional login processes may occur later when devices communicate directly with one another. Device login, port mapping, and host masking do not describe this specific Fibre Channel fabric registration process. Fabric login is therefore the correct answer because it establishes the initial relationship between the connected Fibre Channel device and the switching fabric. This process is required before hosts and storage ports can exchange normal storage traffic.

Q108. Which method provides authentication in both directions between iSCSI devices

1. VLAN tagging
2. Single CHAP
3. Mutual CHAP
4. DNS lookup

Correct Answer: 3. Mutual CHAP

Explanation:

Mutual CHAP authenticates both sides of an iSCSI connection. The initiator verifies the target while the target also verifies the initiator using separate authentication information. This provides stronger identity validation than one way authentication where only one side is checked. DNS lookup translates network names to addresses. VLAN tagging separates Ethernet traffic logically. Single CHAP normally authenticates only one side of the session. Mutual CHAP is therefore the correct answer because it provides authentication in both directions. This can improve security when sensitive block storage resources are accessed through an IP based storage network.

Q109. Which term describes a RAID group still operating after a disk failure

1. Degraded
2. Empty
3. Offline
4. Unformatted

Correct Answer: 1. Degraded

Explanation:

A RAID group is described as degraded when one or more disks have failed but the remaining redundancy still allows data access. During this condition, the storage system can continue operating, but fault protection may be reduced until the failed disk is replaced and reconstruction is completed. Offline normally means the resource cannot provide service. Empty describes a resource without data. Unformatted describes storage that has not been prepared for use. Degraded is therefore the correct answer because it specifically describes a protected RAID set that remains accessible while operating with less redundancy than normal after a disk failure.

Q110. Which host method provides path failover and traffic distribution

1. Formatting
2. Compression
3. Deduplication
4. Multipath load balancing

Correct Answer: 4. Multipath load balancing

Explanation:

Multipath load balancing uses several available host to storage paths to distribute storage traffic while also providing redundancy. If one path becomes unavailable, communication can continue through another healthy path. When several paths are active, input and output requests may be distributed among them according to the path management policy. Formatting prepares storage for use. Compression reduces data size. Deduplication removes repeated information. Multipath load balancing is therefore the correct answer because it combines path redundancy with the ability to use several communication routes. This can improve availability and make better use of available storage connectivity resources.

Q111. Which Huawei software supports automatic host path failover

1. DeviceManager
2. UltraPath
3. HyperMetro
4. SmartCache

Correct Answer: 2. UltraPath

Explanation:

UltraPath is Huawei host software designed to manage multiple data paths between servers and OceanStor storage systems. It can detect path failures and redirect storage traffic through available paths, helping maintain application access when a communication link becomes unavailable. It can also support path selection and load balancing depending on the environment. DeviceManager provides storage administration. SmartCache accelerates frequently accessed data. HyperMetro provides active active storage services across sites. UltraPath is therefore the correct answer because it operates on hosts to manage redundant storage paths and supports automatic failover when individual communication paths experience problems.

Q112. Which Fibre Channel feature separates devices into communication groups

1. Deduplication
2. Thin provisioning
3. Zoning
4. Replication

Correct Answer: 3. Zoning

Explanation:

Zoning separates Fibre Channel devices into logical groups that determine which devices can communicate with one another. A host can be placed in a zone with the storage ports it needs while communication with unrelated devices remains restricted. This improves security, management, and stability within the storage network. Deduplication removes repeated stored data. Replication maintains additional data copies. Thin provisioning improves physical capacity allocation. Zoning is therefore the correct answer because it controls communication relationships within a Fibre Channel fabric. Careful zoning is an important part of configuring enterprise storage networks and preventing unnecessary visibility between unrelated devices.

Q113. Which operation moves active data from one storage location to another

1. Backup
2. Mirroring
3. Archiving
4. Migration

Correct Answer: 4. Migration

Explanation:

Migration moves data or workloads from one storage resource or system to another. It is commonly performed during hardware replacement, capacity reorganization, technology upgrades, or workload relocation. After migration is completed and validated, the original storage resource may no longer be required. Mirroring maintains duplicate copies for protection. Backup creates recoverable copies. Archiving moves inactive information for long term retention. Migration is therefore the correct answer because its main objective is transferring active data to a new storage location rather than permanently maintaining two equivalent service copies. Proper migration planning can reduce disruption to applications and users.

Q114. Which parameter defines how much data is placed on a RAID member before moving to another

1. Stripe size
2. Host name
3. Port speed
4. RPO

Correct Answer: 1. Stripe size

Explanation:

Stripe size defines the amount of data placed on one disk before a striped RAID operation continues on another disk. This value can influence performance because different workloads use different input and output sizes. Large sequential workloads may behave differently from workloads that perform many small random requests. RPO is a recovery planning value. Host name identifies a server. Port speed defines communication capability but does not determine how RAID data is divided among disks. Stripe size is therefore the correct answer because it directly controls the unit of data distribution across members of a striped RAID structure.

Q115. Which function protects unwritten cached data during power loss

1. File sharing
2. Host grouping
3. Cache protection
4. Zoning

Correct Answer: 3. Cache protection

Explanation:

Cache protection helps preserve write data that has been accepted by the storage system but has not yet been written to persistent drives. If power is interrupted, protected cache mechanisms help prevent this data from being lost. Storage systems may use batteries, capacitors, persistent memory, or other technologies to safeguard cached writes. File sharing provides network file access. Zoning controls Fibre Channel communication. Host grouping organizes servers for easier management. Cache protection is therefore the correct answer because it specifically safeguards pending write information and helps maintain data integrity during unexpected power failures or similar hardware interruptions.

Q116. Which storage port is mainly used for system administration

1. Expansion port
2. Management port
3. Service port
4. Fibre Channel port

Correct Answer: 2. Management port

Explanation:

A management port is normally used for administrative access to a storage system. Administrators can use it to configure resources, review alarms, monitor performance, and perform maintenance tasks through management interfaces. Application data usually travels through service ports such as Ethernet or Fibre Channel interfaces configured for host access. Expansion ports are used to connect additional storage components depending on the platform. Management port is therefore the correct answer because its primary purpose is system administration rather than carrying normal production workload data. Separating management traffic from service traffic can also improve organization and security within the storage environment.

Q117. Which event requires attention when a storage pool nears its limit

1. Cache read
2. User login
3. Normal host scan
4. Capacity alarm

Correct Answer: 4. Capacity alarm

Explanation:

A capacity alarm indicates that available storage space has reached a defined warning threshold. Administrators should investigate such alarms promptly because a full storage pool can prevent applications from writing new data and may affect thin provisioned resources. Monitoring usage trends allows capacity to be expanded before service is disrupted. A user login is a normal management event. A cache read is part of routine storage operation. A normal host scan detects storage resources and does not indicate a capacity problem. Capacity alarm is therefore the correct answer because it directly warns administrators that available storage resources may soon become insufficient.

Q118. Which process makes a newly mapped LUN visible to a server

1. Host rescan
2. Compression
3. Replication
4. Deduplication

Correct Answer: 1. Host rescan

Explanation:

A host rescan causes the server operating system or storage subsystem to search again for available storage devices. After a new LUN has been created and mapped correctly, the server may need a rescan before the new storage resource becomes visible. Compression reduces data size. Replication creates additional copies of data. Deduplication removes repeated information. Host rescan is therefore the correct answer because it refreshes the host view of connected storage devices after configuration changes. Administrators commonly perform this operation after provisioning new LUNs or changing storage mappings so the server can detect and begin using the assigned resource.

Q119. Which concept keeps storage services available after a component failure

1. Formatting
2. Redundancy
3. Archiving
4. Compression

Correct Answer: 2. Redundancy

Explanation:

Redundancy means providing additional components or paths so storage services can continue when one component fails. Examples include redundant controllers, power supplies, network links, switches, and disk protection mechanisms. By avoiding single points of failure, redundancy improves overall system availability and resilience. Compression reduces data size. Archiving stores inactive information for long term retention. Formatting prepares storage resources for use. Redundancy is therefore the correct answer because it directly supports continuous service when individual hardware or connectivity components fail. Enterprise Huawei storage environments commonly use redundancy at several layers to reduce the impact of unexpected failures.

Q120. Which operation removes host access before a LUN is deleted

1. RAID rebuild
2. Cache flush
3. Unmapping
4. Data compression

Correct Answer: 3. Unmapping

Explanation:

Unmapping removes the logical relationship between a host and a LUN before the storage resource is deleted or reassigned. This helps ensure that the server no longer expects access to the LUN and reduces the risk of application or operating system errors. Administrators should verify that the resource is no longer in use before removing the mapping. Cache flush writes pending cached information to persistent storage. Data compression reduces capacity use. RAID rebuild restores disk redundancy. Unmapping is therefore the correct answer because it specifically removes host access to the logical storage resource as part of safe storage decommissioning or reconfiguration.