Dell Dell Certifications DEA-1TT4 Questions & Answers

• Question 1:

  A company plans to deploy a new application in their environment. The new application requires 5 TB of storage space. During peak workloads, the application is expected to generate 3000 IOPS with a typical I/ O size of 3 KB. The capacity of each available disk drive is 750 GB. In addition, the maximum number of IOPS a drive can perform at with a 70% utilization is 90 IOPS.

  What is the minimum number of disk drives needed to meet the application's capacity and performance requirements for a RAID 0 configuration?

  A. 7

  B. 34

  C. 50

  D. 40

  Correct Answer: A

  Reference: http://www.raid-calculator.com/default.aspx

• Question 2:

  An Ethernet switch has eight ports and all ports must be operational for 24 hours; from Monday through Friday. However, a failure of Port 5 occurs as follows: Tuesday = 6 AM to 7 AM

  Thursday = 5 PM to 9 PM

  Friday = 8 AM to 9 AM

  What is the MTBF of Port 5?

  A. 30 hours

  B. 32 hours

  C. 40 hours

  D. 38 hours

  Correct Answer: C

  Reference: https://www.sqconline.com/mtbf-calculator-results

• Question 3:

  Which type of zoning does the "X" represent?

  

  A. Fabric zoning

  B. WWN zoning

  C. Mixed zoning

  D. Port zoning

  Correct Answer: A

• Question 4:

  What is the primary advantage of RAID 6 compared to RAID 5?

  A. High available storage capacity

  B. Low write penalty

  C. High resiliency

  D. Low rebuild time for data

  Correct Answer: A

• Question 5:

  What creates a large-scale SAN without storage systems and uses local storage of existing compute systems?

  A. Compute-based SAN

  B. Software-defined compute

  C. Storage-based SAN

  D. Software-defined network

  Correct Answer: A

• Question 6:

  What is determined by the amount of space configured for the journal in continuous data protection (CDP) replication?

  A. Length of time required to recover the data

  B. Length of time the recovery points can go back

  C. Amount of data that can be restored to a specific point

  D. Amount of space the source and replica volumes require

  Correct Answer: D

  Reference: https://www.mycloudwiki.com/san/network-based-replication-cdp-overview/

• Question 7:

  Which Dell EMC product is a disk-based backup and recovery solution that provides inherent source- based deduplication?

  A. Data Domain

  B. SRDF

  C. TimeFinder

  D. Avamar

  Correct Answer: D

  Reference: https://www.dellemc.com/en-us/collaterals/unauth/technical-guides-support-information/ products/networking-4/docu85224.pdf

• Question 8:

  What is an accurate statement about scale-out NAS?

  A. Creates a different file system for each node in the cluster

  B. Stripes data across nodes with mirror or parity protection

  C. Supports only data replication for protecting data

  D. Pools node resources in a cluster to work as multiple NAS devices

  Correct Answer: B

  Reference: https://www.mycloudwiki.com/san/nas-architecture/

• Question 9:

  A Fibre Channel switch has eight ports and all ports must be operational from 8 AM to 8 PM, Monday through Friday. However, a failure of Port 2 occurs on a particular week as follows: Monday = 10 AM to 12 PM

  Wednesday = 4 PM to 9 PM

  Thursday = 4 PM to 7 PM

  Friday = 3 PM to 6 PM

  Saturday = 9 AM to 1 PM

  What is the availability of Port 2 in that week?

  A. 70%

  B. 71.6%

  C. 78.3%

  D. 80%

  Correct Answer: A

• Question 10:

  In a RAID 6 array with four disks, what is the total usable data storage capacity on the array if the disk size is 200 GB?

  A. 200 GB

  B. 400 GB

  C. 600 GB

  D. 800 GB

  Correct Answer: B

  Reference: https://docs.oracle.com/cd/E19871-01/820-1847-20/appendixf.html http://www.raid-calculator.com/default.aspx