IBM C9020-562 Online Practice Questions and Exam Preparation

IBM C9020-562 Online Questions & Answers

• Question 1:

  Which authentication protocol for remote authentication of users is supported by the IBM Storwize V7000 model 524?

  A. Lightweight Extensible Authentication Protocol (LEAP)
  B. Secure Socket Layer (SSL)
  C. Lightweight Directory Access Protocol (LDAP)
  D. Challenge Handshake Authentication Protocol (CHAP)
  C. Lightweight Directory Access Protocol (LDAP)

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  explanation:

  You can use the command-line interface (CLI) to configure the Storwize V7000 to authenticate users against servers implementing the Lightweight Directory Access Protocol (LDAP), including IBM Tivoli Directory Server (ITDS) and Active Directory (AD).

  References:http://www.ibm.com/support/knowledgecenter/ST3FR7_6.4.1/com.ibm.storwize .v7000.641.doc/svc_remoteauthentcliLDAP_08070948.html

• Question 2:

  Comprestimator output shows capacity savings from Real-time Compression and which other factor?

  A. Thin provisioning
  B. Data archiving
  C. Drive consolidation
  D. Data deduplication
  A. Thin provisioning

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  explanation:

  In the output of theComprestimator, the Total Savings is presented as a break-down of thin-provisioning savings and compression savings. This helps in future planning tasks; when the volume stores more data than it does today , thin-provisioning savings get lower, but compression savings are expected to stay the same if new data written to the volume is of the same nature as the data stored in the volume today. References:https://www.ibm.com/support/ knowledgecenter/ST3FR7_7.2.0/com.ibm.storwiz e.v7000.720.learning/comprestimator_script.html

• Question 3:

  An IBM i customer decided to take advantage of the performance of flash-based storage and is implementing an IBM FlashSystem V9000. The customer plans to move all data to the V9000 with native IBM i attachment. Which connection protocol is required for this environment?

  A. FC
  B. FTP
  C. 10 Gb FCoE
  D. InfiniBand
  A. FC

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  explanation:

  IBM FlashSystem V9000 can be attached to IBM i in the following ways:

  *

  Native connection without using Virtual I/O Server (VIOS) Native connection with SAN switches can be done with these adapters: 4 Gb Fibre Channel (FC) adapters, feature number 5774 or 5276 8 Gb FC adapters, feature number 5735 or 5273 16 Gb FC adapters, feature number EN0A or EN0B Direct native connection without SAN switches can be done with these adapters: 4 Gb FC adapters in IBM i connectedto 8 Gb adapters in IBM FlashSystem V9000 16 Gb adapters in IBM i connected to 16 Gb adapters in IBM FlashSystem V9000

  *

  Connection with VIOS in N_Port ID Virtualization (NPIV) mode There are rules for mapping server virtual FC adapters to the ports in VIOS when implementing IBM i in VIOS NPIV connection.

  *

  Connection with VIOS in virtual SCSI (VSCSI) mode References:Introducing and Implementing IBM FlashSystem V9000, page 272 http://www.redbooks.ibm.com/redpieces/pdfs/sg248273.pdf

• Question 4:

  A customer is investigating replicating data between IBM Storwize V7000 for DR purposes and has made the following calculations to help determine the correct capacity for the intersite link.

  Customer formula used

  Amount of data replicated within 24 hours, multiplied by 4 (to allow for peaks and re-sync), translated into bit rate over the 24-hour period.

  Customer calculations

  -

  2 GB of data per day

  -

  2 GB * 4 = 8 GB of data

  -8 GB * 8 bits = 64 GB / 86400 seconds

  -

  68,719,476,736 / 86400 = 795,364 bits/second bandwidth The customer has advised that the working day is 8 hours. What is the status of the calculations?

  A. It is correct.
  B. It is undersized by a factorof 2.
  C. It is undersized by a factor of 3.
  D. It is undersized by a factor of 4.
  C. It is undersized by a factor of 3.

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  explanation:

  The calculation is correct for a 24 hour workday, but as the workday is only 8 hours, the calculation is off by a factor 3.

• Question 5:

  A customer with excessive annual growth is looking at a storage refresh. Which benefit does the IBM Storwize V7000 offer this customer?

  A. It supports in-place fork-lift system upgrades.
  B. It can virtualize other vendors' storage for unlimited time and size.
  C. It can scale up and scale out through clustering.
  D. It can perform a software transfer when moving to the next model.
  C. It can scale up and scale out through clustering.

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  explanation:

  v6.2 Storwize V7000 offers both Scale-Up and Scale-Out possibilities for ultimate flexibility.

  Control enclosures support attachment of up to nine expansion enclosureswith configurations up to 360 TB physical internal storage capacities (for Storwize V7000, up to 1.44 PB in clustered systems)

  Flex System V7000 can scale up to 240 (2.5" disks) per control enclosure; 960 (2.5" disks) per clustered system.

  References:https://en.wikipedia.org/wiki/IBM_Storwize_family#Storwize_V7000

• Question 6:

  A customer wants to create file shares for its Windows clients. The customer is interested in an IBM Storwize V7000 Unified. Which protocol should the customer use for file-sharing?

  A. SMB
  B. NFS
  C. SNMP
  D. iSCSI
  B. NFS

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  explanation:

  Using the NFS protocol, you can transfer files between computers running Windows and other non-Windows operating systems, suchas Linux or UNIX.

  Note:Shares and exports can be managed through the GUI or CLI by Storwize V7000 Unified administrative users that have a user role definition that is authorized to perform share and export management functions.

  A share or export results from making a disk space accessible through the protocols specified during its creation. HTTP, SCP, FTP, CIFS and NFS shares and exports can be created, provided that the corresponding protocol is enabled for

  the system. Shares and exports can only be created for data that is stored in the GPFS file system of the Storwize V7000 Unified system. Non-GPFS file system content cannot be shared or exported.

  References:https://technet.microsoft.com/en-us/library/jj592688(v=ws.11).aspx http://www.ibm.com/support/knowledgecenter/ST5Q4U/com.ibm.storwize.v7000.unified.14 3.doc/mng_exports_topic_welcome.html

• Question 7:

  An IBM technical specialist has positioned the IBM FlashSystem V9000 storage solution to meet a customer's requirement for a storage solution to host high IOPS with low latency workloads. The IBM FlashSystem V9000 uses an IBM patented Variable Stripe RAID with two dimensional Flash RAID technology.

  Which statements describe these features?

  A. The Variable Stripe Array function stripes data across its set of chips within a MicroLatency Module.Two Dimensional Flash RAID function provides protection for the MicroLatency Modules.
  B. TheVariable Stripe Array function stripes data across its set of chips within a MicroLatency Module.Two Dimensional Flash RAID function provides cluster protection between two installed FlashSystem V9000 systems.
  C. The Variable Stripe Array function stripes data across all the installed MicroLatency Modules.Two Dimensional Flash RAID function provides protection across DIMM memory within a MicroLatency Module.
  D. The Variable Stripe Array function stripes data across DIMM memory within a MicroLatency Module.Two Dimensional Flash RAID function provides protection for the MicroLatency Modules.
  A. The Variable Stripe Array function stripes data across its set of chips within a MicroLatency Module.Two Dimensional Flash RAID function provides protection for the MicroLatency Modules.

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  explanation:

  IBM Variable Stripe RAID is a patented IBM technology that provides an intra-module RAID stripe on each flash module.

  With two-dimensional (2D) Flash RAID,system-wide RAID 5 along with Variable Stripe RAID helps reduce downtime and maintain performance, and enables the provisioning of an entire flash module as a spare to be used in another flash

  module failure.

  References: Introducing and Implementing IBMFlashSystem V9000, page 22 http://www.redbooks.ibm.com/redbooks/pdfs/sg248273.pdf

• Question 8:

  A customer is concerned that its volumes would not have access to the full system cache but wants to create pools to limit the amount of space that different departments use. Which activity allows the customer to meet these requirements?

  A. Create several small pools that correspond to LUN size policies
  B. Create a single storage pool that contains all the MDisks
  C. Create LUN size policy in the GUI and set system cache to global via the CLI
  D. Create a single parent pool that contains smaller child pools
  D. Create a single parent pool that contains smaller child pools

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  explanation:

  Before V7.4, the disk space of a storage pool was provided from MDisks, so the capacity of a storage pool depended on the MDisks' capacity. Creating or splitting a storage pool is not possible and a user cannot freely make astorage pool with a particular capacity they want. A child pool is a new logical object that is created from a physical storage pool and provides most of the functions that Pools have (for example, volume creation), but the user can specify the capacity ofthe child pool at creation.

  A child pool is an object similar to a storage pool, and can be used interchangeably with a storage pool. It supports volume copy and migration.

  References: Implementing the IBM Storwize V7000 and IBM Spectrum Virtualize V7.6, page 89 http://www.redbooks.ibm.com/redbooks/pdfs/sg247938.pdf

• Question 9:

  A customer has purchased an IBM Storwize solution and needs to externally virtualize a Dell EqualLogic PS6210E. Which connection protocol is required?

  A. FCoE
  B. iSCSI
  C. SAS
  D. FCIP
  B. iSCSI

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  explanation:

  Support for iSCSI backend storage attachment for SAN Volume Controller and the Storwize storage virtualisation family include theDell Equallogic PS6210 storage model. References:http://www-01.ibm.com/support/docview.wss?uid=ssg1S1006383

• Question 10:

  A customer is complaining about poor disk performance and has updated the controller code to the 7.3 release in an attempt to resolve this concern. A review of the storage identifies a disk pool which contains seven MDisks as the potential problem.

  The MDisk assignment is: Four MDisks are configured as 8-drive RAID 5 Three MDisks are configured as 6-drive RAID 5

  You point out that his practice may be the cause of the performance concern. Which steps should be recommended to the customer?

  A. 1. Create new MDisks constructed as an 8-drive RAID 5, add them to the disk pool.2. Remove each of the 6-drive MDisks from the pool.3. Let the automatic disk pool rebalance feature in the 7.3 code rebalance in the data across the MDisks.
  B. 1. Add two extra drives to each MDisk containing only sex drives.2. Use the automatic disk pool rebalance feature in the 7.3 code to rebalance the data across the MDisks.
  C. 1. Create new MDisks constructed as an 8-drive RAID 5, add them to the disk pool.2. Use a script to rebalance the data across the MDisks.3. Remove each of the 6-drive MDisks from the pool.
  D. 1. Add two extra drives to each MDisk containing only six drives.2. Use a script to rebalance the data across the MDisks.
  A. 1. Create new MDisks constructed as an 8-drive RAID 5, add them to the disk pool.2. Remove each of the 6-drive MDisks from the pool.3. Let the automatic disk pool rebalance feature in the 7.3 code rebalance in the data across the MDisks.

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  explanation:

  What you have to do is create a new Disk Group (mdisk) and add to your existing Pool (mdiskgrp).

  The new versions ofSVC / Storwize Version 7.3 can automatically rebalance the workloads across the mdisks. If you have switched this on, this rebalance script should no longer be used.