[2024年06月26日] 最新をゲットせよ！DEE-1111認定練習テスト問題と試験問題集
リアルDEE-1111試験問題集解答で有効なDEE-1111問題集PDF
質問 # 18
An administrator is trying to view the SLO Compliance Report but is unable to find data for an issue that occurred 7 months ago.
What is the maximum retention period?
- A. Last 2 weeks
- B. 6 months
- C. Last month
- D. 3 months
正解：B
解説：
The maximum retention period for the SLO Compliance Report is 6 months. This means that data older than 6 months will not be available in the report
質問 # 19
An SRDF/Metro Smart DR configuration experiences a service interruption.
What criteria will the Fault-Aware Witness give a higher priority to when selecting the winning array?
- A. Director status
- B. Synced SRDF/A leg
- C. Presence of a DR leq
- D. Bias
正解：D
解説：
In an SRDF/Metro Smart DR configuration, the Fault-Aware Witness gives a higher priority to Bias when selecting the winning array. The bias settings for the devices are used to determine the preferred winner in the event of a failure2. The preferred winner is the side that has priority when requesting the lock from the witness instance2. Reference: Dell EMC PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices
質問 # 20
While using DELL EMC Data Erasure on a PowerMax, what is the minimum number of overwrites needed to support compliance with internal policies and regulatory requirements?
- A. 0
- B. 1
- C. 2
- D. 3
正解：B
解説：
While using DELL EMC Data Erasure on a PowerMax, the minimum number of overwrites needed to support compliance with internal policies and regulatory requirements is 3. The application has prompts and notifications. Such as the option to choose the number of Media Eraser 'wipes' (3x times, 5x times or 7x times)1. Reference: Dell EMC Community Network
質問 # 21
Refer to the exhibit.
What should be done first to recover from this Concurrent SRDF/Star configuration failure?
- A. Switch to the 1st Target Site
- B. Disable Star
- C. Reset the 1st Target Site
- D. Reset the 2nd Target Site
正解：A
解説：
In a Concurrent SRDF/Star configuration failure, the first step to recover is to switch to the 1st Target Site. This is because in a Concurrent SRDF/Star configuration, there are two target sites and one source site. If there's a failure, the source site can switch to either of the target sites based on the business continuity plan1. Reference: Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide
質問 # 22
Refer to exhibit.
Refer to the exhibit.
SRDF device pairs are suspended by the administrator.
Which symrdf command was issued next?
- A. symrdf set bias
- B. symrdf swap
- C. svmdrfhalf swap
- D. svmrdf split
正解：D
解説：
The symrdf split command is used to suspend SRDF/A replication and make both R1 and R2 devices read/write enabled. This is useful for testing purposes or for creating point-in-time copies of data on both sides. The symrdf establish command can be used to resume SRDF/A replication after a split operation. The exhibit shows that both R1 and R2 devices are read/write enabled and have a Split status, which indicates that a symrdf split command was issued next2
質問 # 23
vWitness and Array Witness options are deployed in the same operating environment simultaneously.
Which option does SRDF/Metro favor in this situation?
- A. Smart DR
- B. Witness
- C. Array Witness
- D. Device Bias
正解：B
解説：
When vWitness and Array Witness options are deployed in the same operating environment simultaneously, SRDF/Metro favors the Witness option over the Array Witness option. This is because the Witness option provides a higher level of protection against split-brain scenarios and data loss than the Array Witness option. The Witness option uses a third-party server to monitor the health and connectivity of both SRDF/Metro arrays and to arbitrate in case of a failure. The Array Witness option uses a third array to store configuration information and to arbitrate in case of a failure. However, the Array Witness option does not monitor the health and connectivity of both SRDF/Metro arrays, and it requires manual intervention to resume SRDF/Metro replication after a failure.
質問 # 24
A user can create, manage, and delete PowerMax SRDF device pairs. They can also view the array information, masking objects, device information, and the defined RBAC rules. However, they are unable to create and delete SRDF groups.
Which RBAC profile has been assigned to the user's profile?
- A. RemoteRep Only
- B. Auditor and
- C. LocalRep and Monitor
- D. SecuritvAdmin only
正解：A
解説：
The user has been assigned the RemoteRep role only. The RemoteRep role allows users to create, manage, and delete SRDF device pairs, as well as view array information, masking objects, device information, and RBAC rules2. However, it does not allow users to create and delete SRDF groups, which requires the StorageAdmin role. Therefore, answer C is correct.
A, B, and D are incorrect because they do not match the user's profile. SecurityAdmin (A) role allows users to manage security settings such as authentication methods, certificates, RBAC rules, and audit logs2. Auditor (B) role allows users to view array information and audit logs only2. LocalRep (D) role allows users to create, manage, and delete TimeFinder SnapVX sessions from a source device2. None of these roles allow users to create and delete SRDF device pairs.
質問 # 25
An application owner is experiencing performance issues for their application. Unisphere for PowerMax is showing the storage group is compliant with the current Service Level.
How should the performance issue be addressed?
- A. Adjust the Service Level to a lower level of service
- B. Redistribute the application to other front-end host ports on different directors
- C. Adjust the Service Level to a higher level of service
- D. Redistribute the application to other front-end host ports on the same directors
正解：B
解説：
An application owner is experiencing performance issues for their application. Unisphere for PowerMax is showing the storage group is compliant with the current Service Level. This means that the performance issue is not caused by the storage system, but by some other factor in the environment, such as network congestion, host configuration, or application workload. One possible way to address the performance issue is to redistribute the application to other front-end host ports on different directors. This can help balance the workload across multiple paths and avoid potential bottlenecks or contention on a single port or director. Unisphere for PowerMax provides a Performance Plan feature that can analyze the current configuration and suggest optimal port allocation for each storage group based on historical data and best practices.
Reference:
Understanding Performance Management
Dell EMC PowerMaxOS Performance Guide
質問 # 26
Which is correct about Unisphere for PowerMax and Solutions Enabler permission management?
- A. Unisphere has a more explicit authentication mechanism for users Solutions Enabler uses the operating system user credentials
- B. Unisphere and Solutions Enabler have authorization checking disabled by default
- C. Unisphere and Solutions Enabler permission information is maintained in separate symauth databases.
- D. Unisphere can assign a maximum of two roles per user Solutions Enabler can assign up to four roles per user
正解：A
解説：
Unisphere for PowerMax and Solutions Enabler have different ways of managing user permissions. Unisphere has a more explicit authentication mechanism for users, where each user must have a username and password to log in to the Unisphere interface. Unisphere also supports role-based access control (RBAC), where each user can be assigned one or more roles that define their level of access to the storage system resources and operations. Unisphere maintains the user and role information in a symauth database, which can be shared with Solutions Enabler. Solutions Enabler, on the other hand, uses the operating system user credentials to authenticate users. Solutions Enabler does not require users to have a username and password to run commands, but it checks the symauth database to verify if the user has the appropriate role to perform the requested operation. Solutions Enabler also supports RBAC, where each user can be assigned up to four roles that define their level of access to the storage system resources and operations.
Reference:
Unisphere for PowerMax User Management
Solutions Enabler User Management
質問 # 27
What is the correct sequence of steps for an NDM migration?
正解：
解説：
1 - Create
2 - Environment Setup
3 - cutover
4 - Commit
5 - Environment Remove
質問 # 28
A company has two PowerMax arrays located 100 km apart. The arrays are configured with SRDF/S over Fibre Channel.
Which Dell EMC technology improves FC replication between sites?
- A. Deduplication
- B. SIRT
- C. Fast Write
- D. Write Acceleration
正解：C
解説：
Fast Write is a Dell EMC technology that improves Fibre Channel (FC) replication between sites in a SRDF/S configuration. When a write I/O is issued by the host to the R1 device, SRDF with Fast Write acknowledges the write to the host as soon as the data is stored in the R1's cache and transmitted to the R2's cache. This results in reduced latency and improved performance for FC replication between sites.
https://www.delltechnologies.com/asset/en-us/products/storage/industry-market/h17118_dell_emc_powermax_family_overview.pdf
https://infohub.delltechnologies.com/l/dell-emc-powermax-and-vmax-all-flash-srdf-metro-overview-and-best-practices-1/srdf-metro-overview/
質問 # 29
What is the correct sequence of actions that take place on a Write Miss?
正解：
解説：
1 - Host sends requests to FE director and no cache slots are found
2 - FE finds available slot by polling
3 - FE sends data from host to mirrored cache locations
4 - FE responds to host to acknowledge successful write
5 - BE destages data as a high-priority task to make slots available
6 - BF destages new data to disk at a later time
質問 # 30
SRDF/Metro has been implemented with the bias setting. The R1 side of the pair is configured as the bias side.
How does the device bias work with the R2 device if the R1 array has a failure?
- A. Device bias is unable to make the R2 device available to the host
- B. R2 device automatically becomes the active device
- C. R2 device automatically becomes the bias device
- D. Device bias performs a half-swap, and the R2 device becomes the new R1 device
正解：B
解説：
In an SRDF/Metro configuration with bias setting, if there is a failure at the R1 array (which is configured as the bias side), the R2 device automatically becomes the active device. This means that even if there's a failure on the R1 side, operations can continue on the R2 side without interruption, ensuring high availability.
https://infohub.delltechnologies.com/l/dell-emc-powermax-and-vmax-all-flash-srdf-metro-overview-and-best-practices-1/understanding-bias
質問 # 31
Which KPIs should be reviewed when analyzing BE performance using the PowerMax array?
- A. Reqs/sec and IOPS
- B. %Busy and Balance
- C. Balance and Reqs/sec
- D. IOPS and Utilization
正解：B
解説：
he %Busy and Balance KPIs are the most important indicators of the BE performance on a PowerMax array. The %Busy metric shows the percentage of time that a BE director is busy processing I/O requests. A high %Busy value may indicate that the BE director is overloaded and cannot keep up with the demand. The Balance metric shows the difference in %Busy between the two BE directors in a pair. A high Balance value may indicate that the workload is not evenly distributed across the pair, which can lead to performance degradation. By monitoring these two KPIs, a storage administrator can identify and troubleshoot any potential issues with the BE performance.
Reference:
PowerMax Performance Troubleshooting with Unisphere - Run a real time trace at the system level
質問 # 32
A company wants to implement a three-site disaster recovery solution. It is considering a Concurrent SRDF/Star environment where the production data on R11 devices are replicated to two R2 devices in two remote arrays. Site 2 will use SRDF/S links, and Site 3 will use SRDF/A links from Site 1.
What is the correct configuration for recovery links?
- A. SRDF/S links must be configured between Site 3 and Site 2
- B. SRDF/S links must be configured between Site 1 and Site 3
- C. SRDF/A links must be configured between Site 1 and Site 2
- D. SRDF/A links must be configured between Site 3 and Site 2
正解：A
解説：
In a Concurrent SRDF/Star environment where the production data on R11 devices are replicated to two R2 devices in two remote arrays, SRDF/S links must be configured between Site 3 and Site 2. This is because in a Concurrent SRDF/Star configuration, there are two target sites and one source site. If there's a failure, the source site can switch to either of the target sites based on the business continuity plan1. Reference: Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide, SRDF Star software uses and best practices - Dell
質問 # 33
An organization has PowerMax systems on three sites. They plan to implement SRDF/Star to provide remote protection.
What is a restriction for an SRDF/Star configuration?
- A. SRDF Groups cannot be shared between SRDF/Star configurations
- B. All the SRDF Groups must be defined and in suspended state
- C. The asynchronous PowerMax requires twice the SRDF directors compared to the two synchronous arrays
- D. All SRDF/Star device pairs must be of the same geometry and size
正解：D
解説：
In an SRDF/Star configuration, all SRDF/Star device pairs must be of the same geometry and size. This is because SRDF/Star uses concurrent SRDF to maintain synchronous and asynchronous SRDF sessions between three arrays. The devices in these sessions must have identical geometry to ensure data consistency56. Reference: Dell EMC Solutions Enabler 9.2 SRDF Family CLI User Guide, SRDF/Metro overview | Dell EMC PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices
質問 # 34
A host is issuing I/O to a PowerMax.
What happens if the cache space fills up?
- A. I/O will be serviced at the speed of the destination device
- B. I/O will be queued until an empty cache slot is available
- C. Cache is temporarily disabled
- D. Cache is permanently flushed
正解：B
解説：
When the cache space fills up, I/O will be queued until an empty cache slot is available. This is because PowerMax operates as a cache-centric architecture, where all data is passed through cache before being stored on disk. Cache is used to buffer incoming and outgoing data, as well as to support various functions such as replication and data reduction. When cache is full, the array cannot accept any more data until some cache slots are freed up by flushing data to disk or invalidating stale data. Therefore, answer B is correct.
A, C, and D are incorrect because they do not describe what happens when cache space fills up. I/O will not be serviced at the speed of the destination device (A), as this would bypass the cache and degrade performance. Cache is not permanently flushed or temporarily disabled (D), as this would result in data loss or corruption.
質問 # 35
What is the maximum number of SCM RAID groups that can be added to a two-engine PowerMax 2000?
- A. 0
- B. 1
- C. 2
- D. 3
正解：C
解説：
the maximum number of SCM RAID groups that can be added to a two-engine PowerMax 2000 would depend on various factors including the specific configuration of the system and the capacity requirements.
質問 # 36
A disaster occurred at the workload site of an SRDF/Star configuration. The administrator decides to move the workload to the Synchronous site (Site B).
What symstar command should be used before the workload switch?
- A. unpFOlecl
- B. cleanup
- C. disable
- D. halt
正解：D
解説：
The symstar halt command is used to write disable devices and synchronize SRDF data to remote sites in an SRDF/Star configuration. This command ensures that all sites have a consistent copy of data before switching the workload site from one site to another. Therefore, the symstar halt command should be used before the workload switch in case of a disaster at the workload site of an SRDF/Star configuration1
質問 # 37
An administrator is configuring SYMACL on a PowerMax array.
What are possible ways to get a unique ID for a host system?
- A. Derived from host hardware configuration Randomly generated
- B. Derived from storage array hardware configuration From a passphrase
- C. Derived from SAN domain ID Derived from local disk configuration
- D. Derived from host-based passphrase Randomly generated by Solutions Enabler lockbox file
正解：D
解説：
The SYMACL unique ID for a host system can be obtained in two ways: derived from a host-based passphrase or randomly generated by the Solutions Enabler lockbox file. The host-based passphrase is a string that the user can specify to generate a unique ID for the host. The passphrase can be entered interactively using the symacl -unique -passphrase command, or stored in a file and passed as an argument using the symacl -unique -passphrase -file command. The Solutions Enabler lockbox file is a secure file that stores encryption keys and other sensitive information. The lockbox file can also generate a random unique ID for the host using the symacl -unique command. The lockbox file must be created and initialized before using this method.
Reference:
symacl -unique : Unable to obtain unique ID for host - Dell
EMC - Symmetrix Access Control - symacl | SANSPIRE
How to identify hostname and host ID for license generation
質問 # 38
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