EMC DEE-1111リアルに2023年最新のブレーン問題集で模擬試験問題集
DEE-1111試験問題 リアルなDEE-1111練習問題集
EMC DEE-1111認定試験は、ストレージ業界でキャリアを進めたい専門家にとって優れた投資です。この認定は、世界中の大手企業によって認識されており、個人が業界での高給の仕事を確保するのに役立ちます。この認定を取得することにより、専門家は卓越性へのコミットメントを実証し、PowerMaxおよびVMAXファミリーソリューションの専門知識を紹介できます。
EMC DEE-1111 認定試験の主要な利点の一つは、ストレージソリューションの専門知識の標準として、グローバルに認識されていることです。試験に合格したITプロフェッショナルは、この分野の専門家を求める組織から高く評価されます。また、EMCの認定保持者は通常、より高い給与を受け取り、組織内で昇進する可能性が高くなります。
EMC DEE-1111認定試験は、専門家がPowerMaxおよびVMAXファミリーソリューションの知識とスキルを実証する優れた方法です。この認定は世界的に認識されており、個人がストレージ業界でキャリアを前進させるのに役立ちます。この試験に合格することで、専門家は卓越性へのコミットメントを実証し、これらの技術の専門知識を紹介できます。
質問 # 22
Which feature of PowerMax and VMAX All Flash arrays provides ORM functionality?
- A. FlashBoost
- B. Parallel prefetch
- C. Write coalescing
- D. Write folding
正解：C
解説：
The feature of PowerMax and VMAX All Flash arrays that provides ORM functionality is write coalescing. ORM stands for Optimized Resource Management, which is a set of technologies that optimize the performance and efficiency of flash storage. Write coalescing is one of the ORM technologies that reduces the write amplification and extends the life of flash drives. Write coalescing combines multiple small writes into larger sequential writes before destaging them to the flash drives. This reduces the number of write operations and the amount of data that needs to be erased and rewritten on the flash drives, which improves the performance and endurance of the flash storage.
Reference:
Dell EMC PowerMax: Family Overview
Dell EMC PowerMax and VMAX All Flash: Data Reduction
Dell EMC PowerMax and VMAX All Flash: Embedded Management
質問 # 23
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 # 24
Which metrics are recommended to start analyzing the overall efficiency of the array due to cache?
- A. %Cache WP and % Reads
- B. Array-level % Hit and % Cache WP
- C. Cache Balance and Array-level % Hit
- D. % Reads and Host MBs Read/sec
正解：B
解説：
The metrics that are recommended to start analyzing the overall efficiency of the array due to cache are array-level % Hit and % Cache WP. The array-level % Hit metric shows the percentage of read requests that are satisfied from the cache memory, without accessing the physical disks. A high % Hit value indicates that the cache is effective in reducing the read latency and improving the performance. The % Cache WP metric shows the percentage of cache memory that is occupied by write pending data, which is data that has been written to the cache but not yet destaged to the physical disks. A high % Cache WP value indicates that the cache is under pressure and may not have enough space to accommodate new write requests, which can lead to performance degradation. By monitoring these two metrics, a storage administrator can evaluate the overall efficiency of the array due to cache and identify any potential issues or bottlenecks.
Reference:
System efficiency overview | Dell PowerMax: Data Reduction | Dell Technologies Info Hub Metrics (PowerMax & VMAX) - VMware Docs Dell EMC PowerMax storage Replication cache | Dell EMC PowerMax and VMAX All Flash: TimeFinder SnapVX Local Replication
質問 # 25
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 SAN domain ID Derived from local disk configuration
- C. Derived from host-based passphrase Randomly generated by Solutions Enabler lockbox file
- D. Derived from storage array hardware configuration From a passphrase
正解：C
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 # 26
A three-brick PowerMax 8000 is running PowerMaxOS 5978.444.444. The system is configured with Flash Drives RAID 5 (7+1). The customer wants to expand the capacity with SCM drives.
Which minimum configuration is supported?
- A. 3x RAID 5 (7+1) added to each brick
- B. 1x RAID 5 (7+1) added to brick one
- C. 1x RAID 5 (7+1) added to each brick
- D. 2x RAID 5 (7+1) added to brick one
正解：C
解説：
When expanding the capacity of a three-brick PowerMax 8000 running PowerMaxOS 5978.444.444 configured with Flash Drives RAID 5 (7+1) with SCM drives, the minimum supported configuration is 1x RAID 5 (7+1) added to each brick. This ensures that each brick has additional capacity and maintains the balance of storage across all bricks2. Reference: Dell EMC PowerMax Family Product Guide PowerMaxOS, Dell PowerMax Family Site Planning Guide PowerMax 2000 and PowerMax 8000, POWERMAX FAMILY PowerMax 2000 and 8000 - Dell Technologies Partner Portal
質問 # 27
Which two factors define Capacity Management?
- A. Storage capacity and number of SCM drives
- B. I/O capacity and storage capacity
- C. Number of FE ports and number of SCM drives
B Number of BE ports and I/O capacity
正解：B
解説：
The two factors that define Capacity Management are I/O capacity and storage capacity. I/O capacity refers to the ability of the system to handle the incoming and outgoing data traffic from the hosts or applications. Storage capacity refers to the amount of disk space available to store the data. Capacity Management is the process of planning, monitoring, and optimizing the use of these resources to ensure optimal performance, availability, and efficiency of the system.
Reference:
Dell EMC PowerMax: Family Overview
System Resource Usage
質問 # 28
Refer to the exhibit.
What should be done first to recover from this Concurrent SRDF/Star configuration failure?
- A. Reset the 1st Target Site
- B. Reset the 2nd Target Site
- C. Switch to the 1st Target Site
- D. Disable Star
正解：C
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 # 29
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. Device bias performs a half-swap, and the R2 device becomes the new R1 device
- C. R2 device automatically becomes the active device
- D. R2 device automatically becomes the bias device
正解：C
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 # 30
Refer to exhibit.
The RDF-ECA timer has expired.
What is the state of all the RDF links?
- A. failed over
- B. suspend
- C. split
- D. online
正解：B
解説：
When the RDF-ECA timer expires, all RDF links will be in a 'Suspend' state. This is because the RDF-ECA timer is used to control how long SRDF waits for an acknowledgement from the remote array before it suspends the link. If an acknowledgement is not received within this time, SRDF assumes that there is a problem with the link or remote array and suspends the link to prevent data loss or corruption.
質問 # 31
If the host is cross connected in an SRDF/Metro configuration, what happens if the R2 device becomes Not Ready?
- A. Continues to have read/write access to the R1 device
- B. Read-only access is available to only the R1 device
- C. Read-only access is available to both devices
- D. Loses read/write access to both devices
正解：A
解説：
In an SRDF/Metro configuration, if the host is cross-connected and the R2 device becomes Not Ready, the host continues to have read/write access to the R1 device12. This is because SRDF/Metro is designed to provide high availability and continuous data access. If one device becomes inaccessible, the host can still access the other device12. Reference: SRDF/Metro | SAP Landscape Consolidation with Dell Components, Understanding bias | Dell EMC PowerMax and VMAX All Flash: SRDF/Metro Overview and Best Practices
質問 # 32
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. Write Acceleration
- B. Deduplication
- C. Fast Write
- D. SIRT
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 # 33
Refer to exhibit.
Refer to the exhibit.
Which correctly describes a possible configuration created by SYMACL?
- A. Physical hosts that are part of EmcMgmtGrp group
- B. Only ADMINRD access type
- C. Hosts that are part of AdminGrp proup
- D. Only BASECNTROL access type
正解：C
解説：
The symauth command is used to manage user authorization for SYMCLI commands. The exhibit shows the output of the symauth -list command, which displays the user groups and access types defined for SYMCLI commands. The output shows that there are two user groups: AdminGrp and EmcMgmtGrp. The AdminGrp group has ADMINRD access type, which means that users in this group can run any SYMCLI command with read-only access. The EmcMgmtGrp group has BASECONTROL access type, which means that users in this group can run only a subset of SYMCLI commands with read/write access. Therefore, the correct description of a possible configuration created by SYMACL is hosts that are part of AdminGrp group2
質問 # 34
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 # 35
What is the composition of PowerMax TDATs?
- A. 64 equal chunks per disk
- B. 64 hypers per disk
- C. 64 slices per disk
- D. 64 cylinders per disk
正解：A
解説：
In PowerMax, each RAID group is divided into 64 logical blocks known as TDATs (Thin Device Addressable Tracks). Each TDAT is configured to hold data at a given data reduction level, from 1:1 uncompressed data all the way to 16:11. Reference: Data Protection Schemes | Dell PowerMax: Reliability, Availability, and Serviceability | Dell Technologies Info Hub
質問 # 36
vWitness and Array Witness options are deployed in the same operating environment simultaneously.
Which option does SRDF/Metro favor in this situation?
- A. Array Witness
- B. Device Bias
- C. Witness
- D. Smart DR
正解：C
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 # 37
A DG group is part of a snapshot schedule which runs each day at 9 am then linked to a set of targets for a full copy after termination. Additional volumes were added which increased the link to full copy time.
What course of action will prevent the issue?
- A. Set copy to URGENT
- B. Relink without the -copy option
- C. Set copy pace 16
- D. Relink with the -precopy option
正解：D
解説：
The -precopy option in the relink command can be used when you want to start copying data to the target devices immediately after the link operation. This can be useful in situations where additional volumes have been added, increasing the link to full copy time. By using -precopy, you ensure that the data starts copying immediately, preventing potential issues.
質問 # 38
Refer to exhibit.
Refer to the exhibit.
Who has access to run the symaudit -list commands based on the symauth output shown in the exhibit?
- A. Beth, Bob, and Frank
- B. Bob and Frank only
- C. Beth only
- D. Jackie, Jenn. and Ji
正解：C
解説：
The symaudit -list command is used to display audit records for SYMCLI commands. The exhibit shows the output of the symauth -list command, which displays the user groups and access types defined for SYMCLI commands. The output shows that there are two user groups: AdminGrp and EmcMgmtGrp. The AdminGrp group has ADMINRD access type, which means that users in this group can run any SYMCLI command with read-only access. The EmcMgmtGrp group has BASECONTROL access type, which means that users in this group can run only a subset of SYMCLI commands with read/write access. However, the output also shows that there are two exceptions for specific users: Beth and Frank. Beth has ADMINRD access type for all commands, which overrides her membership in EmcMgmtGrp group. Frank has BASECONTROL access type for all commands, which overrides his membership in AdminGrp group. Therefore, the only user who has access to run the symaudit -list command based on the symauth output shown in the exhibit is Beth, since she has ADMINRD access type for all commands2
質問 # 39
A host is issuing I/O to a PowerMax.
What happens if the cache space fills up?
- A. Cache is permanently flushed
- B. I/O will be queued until an empty cache slot is available
- C. I/O will be serviced at the speed of the destination device
- D. Cache is temporarily disabled
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 # 40
SRDF/Metro has been deployed and is operating normally. Maintenance tasks at the R1 data center require the array to be offline.
Which SRDF operation should be executed on the Metro RDF pairs to facilitate the planned outage without affecting application I/O?
- A. Split with bias set to R2
- B. Failover
- C. Swap
- D. Suspend with bias set to R2
正解：C
解説：
When maintenance tasks at the R1 data center require the array to be offline, a Swap operation should be executed on the Metro RDF pairs. This operation allows for a planned outage without affecting application I/O by swapping the roles of R1 and R2 devices.
質問 # 41
What is a requirement for the SRDF/Metro devices for an SRDF/Metro personality swap?
- A. Must be in partitioned state
- B. Must be in suspended state
- C. Must be WD on the link
- D. Must be RW on the link
正解：D
解説：
For an SRDF/Metro personality swap, the SRDF/Metro devices must be Read/Write (RW) on the link. This ensures that data can be read from and written to the devices during the swap operation.
質問 # 42
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