IBM IBM Certified Specialist C4090-454 Questions & Answers

• Question 41:

  A service provider has two separate customers on different LPARS using a TS7740 and wants to ensure that neither customer can access the other customer's data from the host. Which of the following features, functions or processes would be recommended to achieve this?

  A. Use IODF and SDAC to prevent access to volume ranges by Libport ID

  B. Create separate partitions within the TS7700 using the categories defined in the DEVSUP member

  C. The functions DAA and SAA will work with JES2 on z/OS to direct workloads to the correct cluster

  D. Create separate physical cartridge pools so each customer's data resides on a different cartridge range

  Correct Answer: A

• Question 42:

  A customer has replaced an old virtual tape subsystem with a new TS7740 and would like to compare the batch run times before and after the change. What tool is available in IBM Tape tools to do this?

  A. VEHSTATS

  B. IOSTATS

  C. TAPEWISE

  D. Batch Magic

  Correct Answer: B

• Question 43:

  What indicates that the physical installation of a TS7720 Virtualization Engine is complete and available to the customer?

  A. HOD/IOCP is updated

  B. DF/SMS ACS routines are coded and tested

  C. Code 20-installed is written by the IBM SSR

  D. All items on the implementation plan are completed

  Correct Answer: C

• Question 44:

  Which media formats and cartridge types are supported for writing data with the IBM TS1130 Tape Drive?

  A. JC and EFMT3

  B. JB and EFMT4

  C. JX and EFMT3

  D. JA and EFMT1

  Correct Answer: C

• Question 45:

  Select two key items that are associated with the TS7700 Hardware Installation planning worksheets. (Select two)

  A. Composite Library ID

  B. SMS storage group name

  C. Define VOLSER ranges for logical volumes

  D. SMS Composite and Distributed Library Names

  E. Customer IP addresses for the IP replication and Management Interface

  Correct Answer: AE

• Question 46:

  What is a key characteristic of a disaster recovery (DR) solution compared to a high availability (HA) solution?

  A. DR always requires human intervention while HA always is automated

  B. DR means doubling all equipment in 2 separate sites while HA means doubling all equipment in a single site

  C. DR only protects from natural disasters (fire, flooding, earthquakes etc) while HA only protects from IT equipment outage

  D. DR protects from outage of a complete site while HA protects from outage of one or several individual elements in the IT infrastructure

  Correct Answer: D

• Question 47:

  Which of the following best describes the TS1140 EastSync function?

  A. Matches the input and output data rates of the main buffer

  B. Uses a non-volatile cache for small transaction sizes (less than 204 MB compressed)

  C. Reads forward to the requested target block rather than performing a higher-speed tape motion

  D. Improves synchronized write performance for larger transactions (greater than 204 MB compressed)

  Correct Answer: B

• Question 48:

  A customer is impressed by the cost savings shown in the IBM proposal to consolidate their tape infrastructure replacing Oracle 9840 and 9940 tape drives with TS1140. However they are concerned about replacing their 9840 drives as they have a specific workload which requires fast access to the data. What is the best response to this concern?

  A. the 9840 does not provide fast access so there is no issue

  B. the TS1140 has a faster data rate than the 9840 so it will provide faster access to first byte of data

  C. instead of a specific drive type for the workload, using the IBM Economy Data Cartridge provides the required fast access

  D. the newer drive technology in the TS1140 will fail less frequently than the 9840 so overall provide faster access capability

  Correct Answer: C

• Question 49:

  According to the IBM TS7700 Performance white paper, why does it show that a T67720 has only a sustained I/O performance and a TS7740 has a sustained AND peak I/O performance?

  A. Disk is faster than tape

  B. A disk-based repository delivers more constant throughput rates

  C. The TS7740 has to do pre-migration tasks at a certain point of operation

  D. The TS7740 Fibre Channel disk cache does filesystem rebuilds from time to time

  Correct Answer: C

• Question 50:

  A customer has installed a new TS7740 with 4 TB cache, 2 performance increments and 4 backend TS1140 drives. VEHSTATS shows that the TS7740 is experiencing pre-migrate throttling during the overnight batch run. What is the correct course of action?

  A. Review the effect of throttling and the PMTHLVL value with the customer

  B. Advise the customer to purchase an extra 2 TS1140 drives to relieve the throttling

  C. Advise the customer to purchase an extra 1 TB cache increment to relieve the throttling

  D. Advise the customer to purchase an extra performance increment to relieve the throttling

  Correct Answer: A