H13-711 HCIA-Big Data V2.0 Questions and Answers

is correct

False

True

False

hdfs fsck / (correct answer>

hdfs fsck / -delete

hdfs dfsadmin -report

hdfs balancer-threshold 1

No need to consider how many shards are created on each SolrServer instance

To ensure data reliability, multiple replicas must be created when creating an index

Disk 10 is used when indexing through HDFS, so it is not recommended to deploy Solr on the same node as DataNode.

When the Solr service parameter INDEX_STORED_ON_HDFS value is HDFS, the index of the created collection is stored on HDFS by default

many sources, many formats

grows fast and processing speed is fast

has a large amount of storage and a large amount of calculation

Low value density of data

An arbitrary machine-> same rack-> Mochi resources

Any machine-> local resources-> same rack

Local resources-> Same rack-> Any machine

Same rack-> Any machine-> Local Huangyuan

yam.scheduler. Capacity.root ^ QueueA.user-limit-factor

yarn.scheduler. Capacily.root ^ QueueA.mini mum-user-limit-percent

yarn.scheduler.capacity.root ^ QueueA.state

yarn.scheduler.capacity.root ^ QueueA.maxirnum-capacity (correct case)

True

False

Yes

False

Producer

Consumer

ZoaKeeper

Broker

OS disk

Metadata disk

data disk

Management Disk

A Namespace uses a block pool to manage data blocks

One namespace can use multiple block pools to manage data blocks

The disk space of each block pool is physically shared and the logical space is isolated

Support NameNode / Jamespace horizontal expansion

HTML

XML

Z-dimensional table

JSON

All nodes in the business plane use 10GE networks

Control nodes in the management plane use 10GE networks

Data nodes in the management plane use the 1GE network

Control nodes in the service plane use 1GE networks

Management nodes in the management plane use 10GE networks

True

False

task

taskSet

action

shuffle

Hot standby for the main NameNode

Prepare NameNode has no memory requirements

Help the master NameNode merge the editor's log and reduce the startup time of the master NameNode

The standby NameNode should be deployed to a node with the master NameNode

Big data business model design

Are business scenarios all planning?

Design requirements for typical scenarios

Scene decomposition and karma design

Machine learning, full features

Analysis of the relevance of events behind the data

Based on massive data

based on exact samples

True

False

Iterative calculation

B offline calculation

Real-time interactive computing

Streaming computing

True

False

True

wrong

The disk configuration (such as the number of disks and the disk size) used to store Kafka data cannot meet the current business data flow, resulting in the disk usage reaching the upper limit.

The data storage time is too long, and the data accumulation reaches the upper limit of disk usage.

Unreasonable business planning, resulting in uneven data distribution, and some disks have reached the upper limit of utilization

Broker node failure caused

Check the client exception stack to determine whether the client is using the problem

Check the operation log of the main Nimbus to determine whether the Nimbus server is abnormal

Check the Supervisor running log to determine whether the Supervisor is abnormal

View Worker line log

True

False