Exam Details

  • Exam Code
    :E20-545
  • Exam Name
    :VNX Solutions Specialist Exam for Technology Architects
  • Certification
    :Technology Architect
  • Vendor
    :EMC
  • Total Questions
    :250 Q&As
  • Last Updated
    :Mar 04, 2025

EMC Technology Architect E20-545 Questions & Answers

  • Question 71:

    Which VNX virtual device can be deployed independently of pre-existing customer Ethernet configurations?

    A. Fail Safe Networking

    B. Link Aggregation

    C. Ethernet Channel

    D. MAC addressing

  • Question 72:

    What is the purpose of the Usermapper on VNX?

    A. Used in CIFS-only environments to generate mappings automatically between UNIX UID/GID and Windows user/groups

    B. Used to pull UID/GID information from NIS to generate mappings between UNIX UID/GID and Windows user/groups

    C. Editable file that allows administrators to create special mappings between UNIX UID/GID and Windows user/groups

    D. Used in NFS-only environments to generate mappings automatically between UNIX UID/GID and Windows user/groups

  • Question 73:

    A customer has two IP Replicated VNX systems: VNXA is the Primary system; VNXB is the disaster recovery (DR) system. VNXA is configured with VDMs containing CIFS servers, has secmap cache disabled, and runs a primary Usermapper. VNXB is configured as a DR target system and runs a secondary Usermapper.

    During failover testing, VNXA is failed over and shut down to simulate a site outage. The small number of Linux users that access the CIFS data via NFS find that they no longer have the same permissions as when accessing from the primary site. Additionally, the UID ownership of many files has changed. On investigation it is found that the secondary Usermapper database contains far fewer, and different, mappings compared to the primary.

    Why would this be the case?

    A. The primary Usermapperdatabaseis not replicated to the secondary Usermapper.

    B. The DR site must be promoted to become a primary Usermapper on failover.

    C. The primary Usermapperdatabasehad not completed synchronizing before failover.

    D. The secondary Usermapperdatabasehas become corrupted after failover.

  • Question 74:

    A customer has two IP Replicated VNX systems: VNXA is the Primary system; VNXB is the disaster recovery (DR) system. VNXA is configured with VDMs containing CIFS servers, has secmap cache disabled, and runs a primary

    Usermapper. VNXB is configured as a DR target system and runs a secondary Usermapper.

    During failover testing, VNXA is failed over and shut down to simulate a site outage. The small number of Linux users that access the CIFS data via NFS find that they no longer have the same permissions as when accessing from the primary

    site. Additionally, the UID ownership of many files has changed.

    What could be the cause of the change in permissions?

    A. LDAP requires re-configuration and resynchronization when failing over sites.

    B. The ID mappings of the Primary and secondary Usermapper do not match.

    C. The DR site must be promoted to become a primary Usermapper on failover

    D. DNS has not yet re-synchronized to reflect the new CIFS server addresses.

  • Question 75:

    An enterprise-level customer recently purchased a pair of VNX Gateways with VMAX backend storage arrays to provide File services. Their requirements include the ability to have synchronous, off-site data protection. All CIFS and NFS services will be configured within VDMs for ease of logical administration.

    Which EMC technology should be recommended?

    A. SRDF/S

    B. VNX Replicator

    C. MirrorView/S

    D. RecoverPoint

  • Question 76:

    A large, enterprise-level customer recently purchased a pair of VNX Gateways with VMAX backend storage arrays to provide File services. Their requirements include the ability to have near-synchronous, off-site data protection and to be able to easily load balance services across two sites. All CIFS and NFS services will be configured within VDMs for ease of logical administration.

    Which EMC technologies should be recommended?

    A. VNX Replicator

    B. SRDF/A

    C. MirrorView/A

    D. RecoverPoint

  • Question 77:

    Your customer has an existing VNX for File implementation which is entirely managed via Unisphere using EMC's best practice recommendations. The Windows clients are Windows 7 Pro. There is a Replicator asynchronous disaster recovery (DR) solution in place that allows recovery of the CIFS servers as well as the data file systems.

    The customer has acquired a new business which uses NFSv3-based RHEL Linux clients. They want to present simultaneous NFS exports of file systems that are currently shared by Windows to the RHEL clients. They also want the Replicator solution to provide DR protection that allows the new clients to meet the same RPO as the existing clients.

    Which change to their environment is required to meet the customer's needs?

    A. The NFS version would have to be changed to 4.1

    B. A Data Mover would have to be dedicated to the NFS exports

    C. VDMs would have to be added to support the CIFS shares

    D. Control Station CLI management would have to be used

  • Question 78:

    A customer requires antivirus checking in their VNX for File implementation. They are planning to configure CIFS servers in multiple domains, using VDMs to host the CIFS servers. They want to know how many additional CIFS servers and VDMs should be created to accommodate CAVA in their design.

    What should you tell them?

    A. One CIFS server for CAVA per physical Data Mover

    B. One CIFS server for CAVA per virtual Data Mover

    C. One VDM for CAVA to service the entire VNX

    D. One VDM for CAVA per Active Directory Domain

  • Question 79:

    What are important considerations when designing a VDM solution?

    A. The number of separate ADs, load balancing

    B. Network performance, FAST Cache availability

    C. File system sizes, client operating systems

    D. Deduplication ratio, NFS version to be used

  • Question 80:

    A customer decided to add CIFS share access to an existing VNX for File implementation. You are making recommendations to ensure maximum server portability for local load balancing.

    Which change must you recommend?

    A. Default interface names can no longer be used.

    B. Unique interface addressing can no longer be used.

    C. Two interconnects must be declared per Data Mover.

    D. Replicator SavVol size must be increased.

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