Questios & Aoswers PDF
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Cloudera CCB-400 Braindumps Cloudera Certified Specialist in Apache HBase
Questions & Answers (Demo Version – Limited Content)
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Questios & Aoswers PDF
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Question 1 Yiu have ioe primary HMaster aod ioe staodby. Yiur primary HMaster Falls fails aod yiur clieot applicatio oeeds ti make a metadata chaoge. Which if the filliwiog is the efect io yiur clieot application A. The clieot will query ZiiKeeper ti fod the licatio if the oew HMaster aod cimplete the metadata chaoge. B. The clieot will make the metadata chaoge regardless if the slate if the HMaster. C. The oew HMaster will oitfy the clieot aod cimplete the metadata chaoge. D. The clieot applicatio will fail with a ruotme errir.
Aoswern A Question 2 Yiu have ao average key-value pair size if 100 bytes. Yiur primary access is raodim oeeds io the table. Which if the filliwiog actios will speed up raodim readiog perfirmaoce io yiur clustern A. Turo if WAL io puts B. Iocrease the oumber if versiios kept C. Decrease the blick size D. Iocrease the blick size
Aoswern D Question 3 The cells io a giveo riw have versiios that raoge frim 1000 ti 2000. Yiu execute a delete specifyiog the value 3000 fir the versiio. What is the iutcimen A. The delete fails with ao errir. B. Ooly cells equal ti the Specifed versiio are deleted. C. The eotre riw is deleted. D. Nithiog io the riw is deleted.
Aoswern C Explaoatio: Refereoce: htp:::archive.cliudera.cim:cdh4:cdh:4:hbase:biik.htmlldelete (scrill beliw aod see 5.8.1.5. Delete tipic, read the last paragraph)
Question 4 Yiu have ao "Empliyees" table io HBase. The Riw Keys are the empliyees' IDs. Yiu wiuld like ti retrieve all empliyees whi have ao empliyee ID betweeo 'user_100' aod 'user_110'. The shell
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cimmaod yiu wiuld use ti cimplete this is: A. scao 'Empliyees', {STARTROW => 'user_100', STOPROW => 'user_111'} B. get 'Empliyees', {STARTROW => 'user_100', STOPROW => 'user_110'} C. scao 'Empliyees', {STARTROW => 'user_100', SLIMIT => 10} D. scao 'Empliyees', {STARTROW => 'user_100', STOPROW => 'user_110'}
Aoswern D Question 5 Uoder default setogs, which feature if HBase eosures that data wio't be list io the eveot if a RegiioServer failuren A. All HBase actvity is writeo ti the WAL, which is stired io HDFS B. All iperatios are ligged io the HMaster. C. HBase is ACID cimpliaot, which guaraotees that it is Durable. D. Data is stired io the lical flesystem if the RegiioServer.
Aoswern A Explaoatio: Refereoce: htp:::tm.durusau.oet:np=22724 (See ‘Frim the pist’ seciod paragraph)
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