EMC EMC Specialist E20-390 Questions & Answers

• Question 371:

  At which RAID level are FAST Cache drives configured for VNX arrays?

  A. RAID 0

  B. RAID 1

  C. RAID 3

  D. RAID 5

  Correct Answer: B

  Explanation:

  The FAST Cache consists of one or more pairs of mirrored disks (RAID 1) and provides both read and

  write caching. For a read caching, the FAST Cache copies data off the disks being accessed into the FAST

  Cache.

  For protected-write applications, the FAST Cache effectively buffers the data waiting to be written to disk.

• Question 372:

  You are setting up quotas on a file system that will serve up home directories to thousands of users. How can this task be accomplished efficiently?

  A. Use a trigger to set quotas at the initial login of each user.

  B. Clone the quota configuration from one user to another.

  C. In Unisphere, select multiple users from the quota list

  D. Configure default hard and soft quota values.

  Correct Answer: D

• Question 373:

  Which Linux kernel supports dynamic LUN scanning?

  A. 2.3

  B. 2.4

  C. 2.5

  D. 2.6

  Correct Answer: D

  Explanation: Linux provides multiple mechanisms to rescan the SCSI bus and recognize SCSI devices exposed to the system. In the 2.4 kernel solutions, these mechanisms were generally disruptive to the I/O since the dynamic LUN scanning mechanisms were not consistent. With the 2.6 kernel, significant improvements have been made and dynamic LUN scanning mechanisms are available. Linux currently lacks a kernel command that allows for a dynamic SCSI channel reconfiguration like drvconfig or ioscan.

• Question 374:

  You are implementing a CIFS solution and will be using Virtual Data Movers. Which CIFS dynamic configuration information is contained within the Virtual Data Mover?

  A. CIFS startup configuration

  B. Virtual checker configuration

  C. Kerberos information

  D. DFS root ID information

  Correct Answer: C

  Explanation: The CIFS servers that comprise the VDM store their dynamic configuration information in a configuration file system. This includes information such as local groups, shares, security credentials, and audit logs. A VDM can be loaded and unloaded, moved between Data Movers, or replicated to a remote Data Mover as an autonomous unit. The server's file systems, and all of the configuration data that allows clients to access the file system are available in one virtual container.

• Question 375:

  What happens when a reverse synchronization completes without Protected Restore Mode enabled?

  A. Only the reverse-synchronized clone remains unfractured.

  B. All clones will be fractured.

  C. The gold copy clone used for restore will remain as is.

  D. Host writes to the source LUN are not mirrored to clone.

  Correct Answer: A

  Explanation:

  

• Question 376:

  You are creating an Ethernet channel that spans two or more switches. Which feature must be supported by the switches?

  A. Cross stack

  B. None; Ethernet channel cannot span switches

  C. Fast port

  D. Spanning tree

  Correct Answer: A

  Explanation:

  Cross stack can span an EtherChannel across two switches. All of the links of the EtherChannel will be

  active at any time. So if you configured an EtherChannel using four ports on a blade and connected two

  ports to each of two switches configured for cross stack, your traffic would be flowing across all 4 ports.

• Question 377:

  Where is the CHAP iSCSI username and password stored on a RedHat 5 host?

  A. /sbin/iscsi.conf

  B. /sbin/iscsi/iscsi.conf

  C. /etc/iscsi/iscsi.conf

  D. /etc/iscsi.conf

  Correct Answer: C

• Question 378:

  Which VNX RAID type is suggested for performance and protection for small block random writes to disk?

  A. RAID 5

  B. RAID 6

  C. RAID 0

  D. RAID 1/0

  Correct Answer: D

• Question 379:

  Which RecoverPoint configuration details can be presented in reported format when using Data Protection Advisor?

  A. Replication lag

  B. Link state change

  C. RPA configuration changes

  D. Replication sets

  Correct Answer: A

• Question 380:

  How can users manage SSL/TLS certificates?

  A. From Unisphere, highlight the Settings tab. and choose Security from the drop-down list Then choose Manage SSL/TLS certificates.

  B. From the Setup page, log in using the administrative username and password. Then choose Manage SSL/TLS Certificates.

  C. From Unisphere, select the System tab, and click the Properties link under the System Management menu in the sidebar. Then choose the SSL/TLS Certificates tab.

  D. From Unisphere, click Manage SSL/TLS Certificates under the Service Tasks menu in the sidebar.

  Correct Answer: B