Cloudera CODE: CCB-400
Exam Name: Prepare for Cloudera Certified Specialist in Apache HBase
http://www.testsexpert.com/CCB-400.html
Type
Microsoft
1
IBM
Demo
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Question: 1 You have one primary HMaster and one standby. Your primary HMaster Falls fails and your client application needs to make a metadata change. Which of the following is the effect on your client application? A. The client will query ZooKeeper to find the location of the new HMaster and complete the metadata change. B. The client will make the metadata change regardless of the slate of the HMaster. C. The new HMaster will notify the client and complete the metadata change. D. The client application will fail with a runtime error.
Answer: A Question: 2 You have an average key-value pair size of 100 bytes. Your primary access is random needs on the table. Which of the following actions will speed up random reading performance on your cluster? A. Turn off WAL on puts B. Increase the number of versions kept C. Decrease the block size D. Increase the block size
Answer: D Question: 3 The cells in a given row have versions that range from 1000 to 2000. You execute a delete specifying the value 3000 for the version. What is the outcome? A. The delete fails with an error. B. Only cells equal to the Specified version are deleted. C. The entire row is deleted. D. Nothing in the row is deleted.
Microsoft
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Answer: C Explanation: Reference: http://archive.cloudera.com/cdh4/cdh/4/hbase/book.html#delete (scroll below and see 5.8.1.5. Delete topic, read the last paragraph)
Question: 4 You have an "Employees" table in HBase. The Row Keys are the employees' IDs. You would like to retrieve all employees who have an employee ID between 'user_100' and 'user_110'. The shell command you would use to complete this is: A. scan 'Employees', {STARTROW => 'user_100', STOPROW => 'user_111'} B. get 'Employees', {STARTROW => 'user_100', STOPROW => 'user_110'} C. scan 'Employees', {STARTROW => 'user_100', SLIMIT => 10} D. scan 'Employees', {STARTROW => 'user_100', STOPROW => 'user_110'}
Answer: D Question: 5 Under default settings, which feature of HBase ensures that data won't be lost in the event of a RegionServer failure? A. All HBase activity is written to the WAL, which is stored in HDFS B. All operations are logged on the HMaster. C. HBase is ACID compliant, which guarantees that it is Durable. D. Data is stored on the local filesystem of the RegionServer.
Answer: A Explanation: Reference: http://tm.durusau.net/?p=27674 (See ‘From the post’ second paragraph)
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Question: 6 You have two standbys and one primary HMaster. Your primary HMaster fails. Which of the remaining HMasters becomes the new primary? A. Whichever HMaster first responds to ZooKeeper B. Whichever HMaster ZooKeeper randomly selects C. Whichever HMaster creates the znode first D. Whichever HMaster has the lower IP address
Answer: A
Microsoft
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Cloudera CODE: CCB-400
Exam Name: Prepare for Cloudera Certified Specialist in Apache HBase
http://www.testsexpert.com/CCB-400.html Microsoft
Cisco
IBM
MCTS 70-177
CCNA 640-802 640-822 640-816 640-460
MBS 98-361 98-366
CCNP 642-832 642-813 642-825 642-845
000-G01 000-M44
MCAS 77-602
CCSP 642-627 642-637 642-647 642-545
000-444 000-910
MCSE 70-282
CCIE 350-001 350-018 350-029 350-060
COG-105 COG-185
MCSA 2003 70-461 70-620
DATA CENTER 642-972 642-973 642-974 642-975
70-162 70-462
MB3-861
77-601 77-604 70-281 70-284 70-680
70-463
MB3-862
77-605 70-285
70-291
Microsoft
5
IBM
IBM Lotus
000-M42 000-M60
000-M41 000-M62
IBM Mastery
000-M43 000-M45
Solutions Expert
000-640 000-913
IBM Cognos
COG-180 COG-200
IBM Specialist
000-005 000-032
000-015 000-042
HP
Other
AIS
70-323 9L0-063 9L0-010 9L0-517 HP2-E53 70-321 650-179 1Y0-A20 00M-646 MB2-876 646-206 9L0-314 MB6-884 220-701 650-196 3305 MB6-871 HP2-Z22 9L0-407 9A0-146 HP2-H23 000-184 1Z0-527 HP2-B91 000-781 M70-201 M70-101 7004 HP3-X11 HP3-X08
HP0-311
HP0-M28
HP0-A25
HP0-M30
APC
HP0-D11 HP0-S29
HP0-J37 HP0-P14
MASE HP0-J33 HP0-M48 HP0-M49 HP0-M50 ASE
HP0-066 HP0-781
HP0-082 HP0-782
CSE
HP0-090 HP0-277
HP0-276 HP0-760
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