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Question 1
The HDFS data reading process includes the following steps, please choose the correct order. (Drag picture title, sort question)
A. After obtaining this input stream, the client calls the read method to read the data. The input stream selects the nearest DataNode to establish a connection and read data.
B. The client calls close. to close the input stream.
C. The location where the data block corresponding to this file in NameNodel is obtained by calling NameNode remotely through RPC
D. If the end of the data block has been reached. Then close the connection with this DataNodel, and then re-find E. a data block. until all data is read.
E. The client calls the open method of the FileSystem instance to obtain the input stream corresponding to the file.
Answer:
A, B, C, D, E
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Question 2
The following is for the LdapSearer organization?Type statement is correct
A. Each node in the LdapSearer directory is called?day, and?has its own uniquely distinguishable name?IN (Distingarl shed Mama)
B. Specific objects cannot be defined under organizational units. C.LdapSearer directory information is based on? ?structure to carry out?woven and stored.
D. The tree of the LdapSearer directory tree generally defines the domain name dc (Dcmain Compen?)
Answer:
A, C, D
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Question 3
F? ?Include? ?Second major?, the following are about these two? ?Which one is it?
A. ?to the next?of? ?recognize?
B. ?acting on an exact?
C. ? ?or by?special mechanism?,and?Piece?
D. ?file transactions,?of?
Answer:
C
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Question 4
A large enterprise needs to do log analysis, operation and maintenance monitoring,searchWith recommendation, database acceleration, can be used for the enterpriseWhich are recommendedwork?
A. Data Lake Governance Center DGC
B. datastorehouseServeDWS
C. Map Reduce service
D. Cloud cable service CSS
Answer:
D
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Question 5
Which of the following options are Huawei's data center solutions?
A. Data Lake Governance Center DGC
B. Cloud operating system FusionSphere Openstack
C. AI development platform ModelArts
D. Video Analysis VAS
Answer:
C, D
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Question 6
The following provides a variety of Redist optimization practices, which option is wrong?
A. closecloseTransparent Huge Pages
B. Modify the minimum number of tcp connections in 1linux
C. Modify the linux kernel memory allocation strategy or execute sysctl
D. Condensed key names and key values
Answer:
B
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Question 7
Which of the following parts does the structure of the unified certification management system include?
A. Unified Authentication Server
B. Unified authentication management module
C. Identity information storage server
D. Unified Session Management Module
Answer:
A, B, C
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Question 8
By configuring which of the following parameters can the logs generated in Kafkal be cleaned up?
A. log.retention.bytes
B. server.properties
C. log.cleanup.policy
D. log.retention.hours
Answer:
A, C, D
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Question 9
A Kafka cluster contains one or more service instances, which are called( )
Answer:
Broker
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Question 10
Which of the following reasons may be the cause of the failure of the Loader job execution?
A. Job execution takes too long
B. Does not comply with data conversion rules
C. No data compression format specified
D. No source directory or file specified
Answer:
A, B, C, D
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Question 11
According to the way of data acquisition in Flue, Source can be divided into driven Sourcet and( )Source.
Answer:
polling
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Question 12
A telecommunications companyplanopenexhibitionBigdatabusiness,target businesshavecustomer grouping,calendarHistorical bill analysis, real-time call charge analysis and other services. Which of the following options is the most appropriate in terms of functionality and cost to meet business needs?
A. Deploy Soark separately
B. Deploy Map Rabace
C. Deploy Storm
D. Deploy MapReduce with Stare
Answer:
A
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Question 13
Which of the following options is correct for the description of Compactiong?
A. There are two types of Minor and Major
B. Compation reduces the number of HFile files by merging files CCompation reduces the number of HFile files by eliminating expired data files
D. Minor trigger frequency is higher than Major
Answer:
A
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Question 14
DataSet from Spark2.0Officially enabled, it has the characteristics of both DataFrame and RDD, and RDD is no longer used.
A. TRUE
B. FALSE
Answer:
B
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Question 15
The following aboutHiveComponent capabilities in the architecture. Which is the correct description?
A. ThriftServer for thriftcatchmouth, as JDBCservices and willHive and other applicationsintegrated
B. Compiler pressAccording tomissionaccording toDependent relationship is executed separatelyMap/Raduce task
C. Executor is responsible for editingTranslate voQLandwillwhich translates into a series of mutualrelyofMap/ReduceTask D. Ooptimizer is an optimizer, divided into logicalJiyouoptimizer and physical optimizer.HiveQLGenerated execution planMapRadceTaskEnterrow optimization