CCA-500復習資料、CCA-500全真模擬試験

みなさんにJPexamを選ぶのはより安心させるためにJPexamは部分のCloudera CCA-500試験材料がネットで提供して、君が無料でダウンロードすることができます。安心に弊社の商品を選ぶとともに貴重な時間とエネルギーを節約することができる。JPexamは真実のCloudera CCA-500認証試験の問題集が100%で君の試験の合格を保証します。君の明るい将来を祈っています。

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ClouderaのCCA-500認定試験がIT業界には極めて重要な地位があるがよく分かりましょう。試験に合格するのは簡単ではないもよくわかりましょう。“簡単に合格できる方法がありますか？”答えはもちろんですよ。JPexamはこの問題を着々解決できますよ。IT専門家がClouderaのCCA-500認定試験に関する特別な問題集を開発しています。それをもって、試験は問題になりませんよ。

試験番号：CCA-500問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop (CCAH)
最近更新時間：2014-10-14
問題と解答：全60問 CCA-500 学習資料
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

JPexamのClouderaのCCA-500試験トレーニング資料を手に入れたら、我々は一年間の無料更新サービスを提供します。それはあなたがいつでも最新の試験資料を持てるということです。試験の目標が変わる限り、あるいは我々の勉強資料が変わる限り、すぐに更新して差し上げます。あなたのニーズをよく知っていていますから、あなたに試験に合格する自信を与えます。

もうこれ以上尻込みしないでくださいよ。CCA-500問題集の詳しい内容を知りたいなら、はやくJPexamのサイトをクリックして取得してください。あなたは問題集の一部を無料でダウンロードすることができますから。CCA-500問題集を購入する前に、JPexamに行ってより多くの情報を読んでください。このサイトを深く知ったほうがいいですよ。それに、試験に失敗すれば全額返金のポリシーについて、事前に調べたほうがいいです。JPexamは間違いなくあなたの利益を全面的に保護し、あなたの悩みを思いやるウェブサイトです。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/CCA-500_exam.html

NO.1 You observed that the number of spilled records from Map tasks far exceeds the number of
map output records. Your child heap size is 1GB and your io.sort.mb value is set to 1000MB. How
would you tune your io.sort.mb value to achieve maximum memory to disk I/O ratio?
A. For a 1GB child heap size an io.sort.mb of 128 MB will always maximize memory to disk I/O
B. Increase the io.sort.mb to 1GB
C. Decrease the io.sort.mb value to 0
D. Tune the io.sort.mb value until you observe that the number of spilled records equals (or is as
close to equals) the number of map output records.
Answer: D

Cloudera問題   CCA-500問題   CCA-500資格   CCA-500認定試験

NO.2 You have installed a cluster HDFS and MapReduce version 2 (MRv2) on YARN. You have no
dfs.hosts entry(ies) in your hdfs-site.xml configuration file. You configure a new worker node by
setting fs.default.name in its configuration files to point to the NameNode on your cluster, and you
start the DataNode daemon on that worker node. What do you have to do on the cluster to allow
the worker node to join, and start sorting HDFS blocks?
A. Without creating a dfs.hosts file or making any entries, run the commands
hadoop.dfsadmin-refreshModes on the NameNode
B. Restart the NameNode
C. Creating a dfs.hosts file on the NameNode, add the worker Node's name to it, then issue the
command hadoop dfsadmin -refresh Nodes = on the Namenode
D. Nothing; the worker node will automatically join the cluster when NameNode daemon is started
Answer: A

Cloudera日記   CCA-500テスト   CCA-500一発合格

NO.3 On a cluster running MapReduce v2 (MRv2) on YARN, a MapReduce job is given a directory of
10 plain text files as its input directory. Each file is made up of 3 HDFS blocks. How many Mappers
will run?
A. We cannot say; the number of Mappers is determined by the ResourceManager
B. We cannot say; the number of Mappers is determined by the developer
C. 30
D. 3
E. 10
F. We cannot say; the number of mappers is determined by the ApplicationMaster
Answer: E

Cloudera問題集   CCA-500問題集   CCA-500種類   CCA-500   CCA-500   CCA-500費用

NO.4 Your Hadoop cluster is configuring with HDFS and MapReduce version 2 (MRv2) on YARN. Can
you configure a worker node to run a NodeManager daemon but not a DataNode daemon and still
have a functional cluster?
A. Yes. The daemon will receive data from the NameNode to run Map tasks
B. Yes. The daemon will get data from another (non-local) DataNode to run Map tasks
C. Yes. The daemon will receive Map tasks only
D. Yes. The daemon will receive Reducer tasks only
Answer: A

Cloudera関節   CCA-500費用   CCA-500 vue

NO.5 You are planning a Hadoop cluster and considering implementing 10 Gigabit Ethernet as the
network fabric.
Which workloads benefit the most from faster network fabric?
A. When your workload generates a large amount of output data, significantly larger than the
amount of intermediate data
B. When your workload consumes a large amount of input data, relative to the entire capacity if
HDFS
C. When your workload consists of processor-intensive tasks
D. When your workload generates a large amount of intermediate data, on the order of the input
data itself
Answer: A

Cloudera難易度   CCA-500書籍   CCA-500勉強法   CCA-500問題   CCA-500練習問題

NO.6 For each YARN job, the Hadoop framework generates task log file. Where are Hadoop task log
files stored?
A. Cached by the NodeManager managing the job containers, then written to a log directory on the
NameNode
B. Cached in the YARN container running the task, then copied into HDFS on job completion
C. In HDFS, in the directory of the user who generates the job
D. On the local disk of the slave mode running the task
Answer: D

Cloudera   CCA-500講座   CCA-500教科書   CCA-500番号   CCA-500 PDF

NO.7 Choose three reasons why should you run the HDFS balancer periodically?
A. To ensure that there is capacity in HDFS for additional data
B. To ensure that all blocks in the cluster are 128MB in size
C. To help HDFS deliver consistent performance under heavy loads
D. To ensure that there is consistent disk utilization across the DataNodes
E. To improve data locality MapReduce
Answer: D

Cloudera   CCA-500費用   CCA-500講座
Explanation:
NOTE: There is only one correct answer in the options for this question. Please check the following
reference:
http://www.quora.com/Apache-Hadoop/It-is-recommended-that-you-run-the-HDFSbalancer-period
ically-Why-Choose-3

NO.8 You are running a Hadoop cluster with a NameNode on host mynamenode, a secondary
NameNode on host mysecondarynamenode and several DataNodes.
Which best describes how you determine when the last checkpoint happened?
A. Execute hdfs namenode -report on the command line and look at the Last Checkpoint
information
B. Execute hdfs dfsadmin -saveNamespace on the command line which returns to you the last
checkpoint value in fstime file
C. Connect to the web UI of the Secondary NameNode (http://mysecondary:50090/) and look at the
"Last Checkpoint" information
D. Connect to the web UI of the NameNode (http://mynamenode:50070) and look at the "Last
Checkpoint" information
Answer: B

Cloudera一発合格   CCA-500過去   CCA-500ガイド   CCA-500過去問
Reference:https://www.inkling.com/read/hadoop-definitive-guide-tom-white-3rd/chapter10/hdfs

DS-200資格問題集、DS-200受験記対策

ClouderaのDS-200のオンラインサービスのスタディガイドを買いたかったら、JPexamを買うのを薦めています。JPexamは同じ作用がある多くのサイトでリーダーとしているサイトで、最も良い品質と最新のトレーニング資料を提供しています。弊社が提供したすべての勉強資料と他のトレーニング資料はコスト効率の良い製品で、サイトが一年間の無料更新サービスを提供します。ですから、弊社のトレーニング製品はあなたが試験に合格することを助けにならなかったら、全額で返金することを保証します。

このインターネットが普及された時代に、どのような情報を得るのが非常に簡単なことだということを我々はよく知っていますが、品質と適用性の欠如が問題です。インターネットでClouderaのDS-200試験トレーニング資料を探す人がたくさんいますが、どれが信頼できるか良く分からないです。ここで私はJPexamのClouderaのDS-200試験トレーニング資料を勧めたいです。この資料はインターネットでのクリック率と好評率が一番高いです。JPexamはClouderaのDS-200試験トレーニング資料の一部の問題と解答を無料に提供しますから、あなたは試用してから買うかどうかを決めることができます。

JPexamが提供した問題集をショッピングカートに入れて100分の自信で試験に参加して、成功を楽しんで、一回だけClouderaのDS-200試験に合格するのが君は絶対後悔はしません。

試験番号：DS-200問題集
試験科目：Data Science Essentials Beta
最近更新時間：2014-09-22
問題と解答：全60問 DS-200 認定資格
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

今の競争の激しいのIT業界の中にCloudera DS-200認定試験に合格して、自分の社会地位を高めることができます。弊社のIT業で経験豊富な専門家たちが正確で、合理的なCloudera DS-200認証問題集を作り上げました。 弊社の勉強の商品を選んで、多くの時間とエネルギーを節約こともできます。

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NO.1 Refer to the exhibit.
Which point in the figure is the median?
A. A
B. B
C. C
Answer: A

Cloudera問題集   DS-200関節   DS-200参考書   DS-200

NO.2 Under what two conditions does stochastic gradient descent outperform 2nd-order
optimization techniques such as iteratively reweighted least squares?
A. When the volume of input data is so large and diverse that a 2nd-order optimization technique
can be fit to a sample of the data
B. When the model's estimates must be updated in real-time in order to account for
newobservations.
C. When the input data can easily fit into memory on a single machine, but we want to calculate
confidence intervals for all of the parameters in the model.
D. When we are required to find the parameters that return the optimal value of the objective
function.
Answer: A,B

Cloudera合格点   DS-200方法   DS-200試験   DS-200番号

NO.3 What is the most common reason for a k-means clustering algorithm to returns a sub-optimal
clustering of its input?
A. Non-negative values for the distance function
B. Input data set is too large
C. Non-normal distribution of the input data
D. Poor selection of the initial controls
Answer: C

Cloudera   DS-200学習   DS-200認定試験   DS-200種類   DS-200勉強法

NO.4 What is default delimiter for Hive tables?
A.

CCA-505資格問題集、CCA-500受験記対策

JPexamが提供する真実と全面的なCloudera認証試験について資料で100%で君の試験に合格させてまたあなたに1年無料のサービスを更新し、今はJPexamのインターネットで無料のClouderaのCCA-505認証試験問題集のソフトウェアがダウンロード することができます。

みなさんにJPexamを選ぶのはより安心させるためにJPexamは部分のCloudera CCA-500試験材料がネットで提供して、君が無料でダウンロードすることができます。安心に弊社の商品を選ぶとともに貴重な時間とエネルギーを節約することができる。JPexamは真実のCloudera CCA-500認証試験の問題集が100%で君の試験の合格を保証します。君の明るい将来を祈っています。

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試験番号：CCA-505問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade Exam
最近更新時間：2014-09-11
問題と解答：全45問 CCA-505 認定資格
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

試験番号：CCA-500問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop (CCAH)
最近更新時間：2014-09-11
問題と解答：全60問 CCA-500 学習教材
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

JPexamのClouderaのCCA-505問題集を買う前に、一部の問題と解答を無料に試用することができます。そうすると、JPexamのClouderaのCCA-505トレーニング資料の品質をよく知っています。JPexamのClouderaのCCA-505問題集は絶対あなたの最良の選択です。

もし君がClouderaのCCA-500に参加すれば、良い学習のツルを選ぶすべきです。ClouderaのCCA-500認定試験はIT業界の中でとても重要な認証試験で、合格するために良い訓練方法で準備をしなければなりません。。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/CCA-505_exam.html

NO.1 A slave node in your cluster has four 2TB hard drives installed (4 x 2TB). The DataNode is
configured to store HDFS blocks on the disks. You set the value of the dfs.datanode.du.reserved
parameter to 100GB. How does this alter HDFS block storage?
A. A maximum of 100 GB on each hard drive may be used to store HDFS blocks
B. All hard drives may be used to store HDFS blocks as long as atleast 100 GB in total is available on
the node
C. 100 GB on each hard drive may not be used to store HDFS blocks
D. 25 GB on each hard drive may not be used to store HDFS blocks
Answer: B

Cloudera   CCA-505認証試験   CCA-505教材   CCA-505初心者   CCA-505関節   CCA-505

NO.2 You suspect that your NameNode is incorrectly configured, and is swapping memory to disk.
Which Linux commands help you to identify whether swapping is occurring?
A. free
B. df
C. memcat
D. top
E. vmstat
F. swapinfo
Answer: C

Cloudera参考書   CCA-505番号   CCA-505内容

NO.3 Your cluster's mapped-site.xml includes the following parameters
<name>mapreduce.map.memory.mb</name> <value>4096<value/>
<name>mapreduce.reduce.memory,mb</name> <value>8192</value>
And your cluster's yarn-site.xml includes the following parameters
<name>yarn.nodemanager/vmen-pmem-ratio</name> <value>2.1</value>
What is the maximum amount of virtual memory allocated for each map before YARN will kill its
Container?
A. 4 GB
B. 17.2 GB
C. 24.6 GB
D. 8.2 GB
Answer: B

Cloudera学習   CCA-505認定資格   CCA-505入門   CCA-505一発合格   CCA-505問題

NO.4 You decide to create a cluster which runs HDFS in High Availability mode with automatic
failover, using Quorum-based Storage. What is the purpose of ZooKeeper in such a configuration?
A. It manages the Edits file, which is a log changes to the HDFS filesystem.
B. It monitors an NFS mount point and reports if the mount point disappears
C. It both keeps track of which NameNode is Active at any given time, and manages the Edits file,
which is a log of changes to the HDFS filesystem
D. It only keeps track of which NameNode is Active at any given time
E. Clients connect toZoneKeeper to determine which NameNode is Active
Answer: D

Cloudera勉強法   CCA-505   CCA-505受験記   CCA-505   CCA-505フリーク   CCA-505
Reference:http://www.cloudera.com/content/cloudera-content/clouderadocs/CDH4 /latest/PDF/CD
H4-High-Availability-Guide.pdf(page 15)

NO.5 Your Hadoop cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. Can
you configure a worker node to run aNodeManager daemon but not a DataNode daemon and still
have a function cluster?
A. Yes. The daemon will receive data from the NameNode to run Map tasks
B. Yes. The daemon will get data from another (non-local) DataNode to run Map tasks
C. Yes. The daemon will receive Reduce tasks only
Answer: A

Clouderaクラムメディア   CCA-505問題   CCA-505   CCA-505ガイド   CCA-505練習   CCA-505取得

NO.6 Your cluster implements HDFS High Availability (HA). Your two NameNodes are named nn01
and nn02. What occurs when you execute the command: hdfs haadmin -failover nn01 nn02
A. nn02 becomes the standby NameNode and nn01 becomes the active NameNode
B. nn02 is fenced, and nn01 becomes the active NameNode
C. nn01 becomes the standby NamNode and nn02 becomes the active NAmeNode
D. nn01 is fenced, and nn02 becomes the active NameNode
Answer: D

Cloudera番号   CCA-505   CCA-505書籍   CCA-505一発合格
Explanation:
failover - initiate a failover between two NameNodes This subcommand causes a failover from the
first provided NameNode to the second. If the first NameNode is in the Standby state, this
command simply transitions the second to the Active state without error. If the first NameNode is in
the Active state, an attempt will be made to gracefully transition it to the Standby state. If this fails,
the fencing methods (as configured by dfs.ha.fencing.methods) will be attempted in order until one
of the methods succeeds. Only after this process will the second NameNode be transitioned to the
Active state. If no fencing method succeeds, the second NameNode will not be transitioned to the
Active state, and an error will be returned.

NO.7 Which Yarn daemon or service monitors a Container's per-application resource usage (e.g,
memory, CPU)?
A. NodeManager
B. ApplicationMaster
C. ApplicationManagerService
D. ResourceManager
Answer: A

Cloudera   CCA-505独学   CCA-505模擬   CCA-505受験記
Reference:http://docs.hortonworks.com/HDPDocuments/HDP2 /HDP-2.0.0.2 /bk_usingapache-hadoo
p/content/ch_using-apache-hadoop-4.html(4th para)

NO.8 You are the hadoop fs -put command to add a file "sales.txt" to HDFS. This file is small enough
that it fits into a single block, which is replicated to three nodes in your cluster (with a replication
factor of 3). One of the nodes holding this file (a single block) fails. How will the cluster handle the
replication of this file in this situation/
A. The cluster will re-replicate the file the next time the system administrator reboots the
NameNode daemon (as long as the file's replication doesn't fall two)
B. This file will be immediately re-replicated and all other HDFS operations on the cluster will halt
until the cluster's replication values are restored
C. The file will remain under-replicated until the administrator brings that nodes back online
D. The file will be re-replicated automatically after the NameNode determines it is under replicated
based on the block reports it receives from the DataNodes
Answer: B

Cloudera取得   CCA-505練習問題   CCA-505

CCA-505勉強の資料、CCA-500勉強の資料

JPexamが提供する資料は比べものにならない資料です。これは前例のない真実かつ正確なものです。受験生のあなたが首尾よく試験に合格することを助けるように、当社のITエリートの団体はずっと探っています。JPexamが提供した製品は真実なもので、しかも価格は非常に合理的です。JPexamの製品を選んだら、あなたがもっと充分の時間で試験に準備できるように、当社は一年間の無料更新サービスを提供します。そうしたら、試験からの緊張感を解消することができ、あなたは最大のメリットを取得できます。

JPexamのCCA-500問題集は的中率が100％に達することができます。この問題集は利用したそれぞれの人を順調に試験に合格させます。もちろん、これはあなたが全然努力する必要がないという意味ではありません。あなたがする必要があるのは、問題集に出るすべての問題を真剣に勉強することです。この方法だけで、試験を受けるときに簡単に扱うことができます。いかがですか。JPexamの問題集はあなたを試験の準備する時間を大量に節約させることができます。これはあなたがCCA-500認定試験に合格できる保障です。この資料が欲しいですか。では、早くJPexamのサイトをクリックして問題集を購入しましょう。それに、購入する前に、資料のサンプルを試すことができます。そうすれば、あなたは自分自身で問題集の品質が良いかどうかを確かめることができます。

全てのIT専門人員はClouderaのCCA-500の認定試験をよく知っていて、その難しい試験に受かることを望んでいます。ClouderaのCCA-500の認定試験の認可を取ったら、あなたは望むキャリアを得ることができるようになります。JPexamのClouderaのCCA-500試験トレーニング資料を利用したら、望むことを取得できます。

試験番号：CCA-505問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop (CCAH) CDH5 Upgrade Exam
最近更新時間：2014-09-03
問題と解答：全45問 CCA-505 復習資料
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

試験番号：CCA-500問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop (CCAH)
最近更新時間：2014-09-03
問題と解答：全60問 CCA-500 勉強の資料
100％の返金保証。1年間の無料アップデート。

>>詳しい紹介はこちら

 

人生のチャンスを掴むことができる人は殆ど成功している人です。ですから、ぜひJPexamというチャンスを掴んでください。JPexamのClouderaのCCA-500試験トレーニング資料はあなたがClouderaのCCA-500認定試験に合格することを助けます。この認証を持っていたら、あなたは自分の夢を実現できます。そうすると人生には意義があります。

JPexamの問題集はIT専門家がClouderaのCCA-505認証試験について自分の知識と経験を利用して研究したものでございます。JPexamの問題集は真実試験の問題にとても似ていて、弊社のチームは自分の商品が自信を持っています。JPexamが提供した商品をご利用してください。もし失敗したら、全額で返金を保証いたします。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/CCA-505_exam.html

NO.1 Which Yarn daemon or service monitors a Container's per-application resource usage (e.g,
memory, CPU)?
A. NodeManager
B. ApplicationMaster
C. ApplicationManagerService
D. ResourceManager
Answer: A

Cloudera一発合格   CCA-505スクール   CCA-505入門
Reference:http://docs.hortonworks.com/HDPDocuments/HDP2 /HDP-2.0.0.2 /bk_usingapache-hadoo
p/content/ch_using-apache-hadoop-4.html(4th para)

NO.2 You decide to create a cluster which runs HDFS in High Availability mode with automatic
failover, using Quorum-based Storage. What is the purpose of ZooKeeper in such a configuration?
A. It manages the Edits file, which is a log changes to the HDFS filesystem.
B. It monitors an NFS mount point and reports if the mount point disappears
C. It both keeps track of which NameNode is Active at any given time, and manages the Edits file,
which is a log of changes to the HDFS filesystem
D. It only keeps track of which NameNode is Active at any given time
E. Clients connect toZoneKeeper to determine which NameNode is Active
Answer: D

Cloudera   CCA-505問題集   CCA-505教本   CCA-505参考書   CCA-505試験
Reference:http://www.cloudera.com/content/cloudera-content/clouderadocs/CDH4 /latest/PDF/CD
H4-High-Availability-Guide.pdf(page 15)

NO.3 You suspect that your NameNode is incorrectly configured, and is swapping memory to disk.
Which Linux commands help you to identify whether swapping is occurring?
A. free
B. df
C. memcat
D. top
E. vmstat
F. swapinfo
Answer: C

Cloudera内容   CCA-505攻略   CCA-505   CCA-505問題集

NO.4 Your Hadoop cluster is configured with HDFS and MapReduce version 2 (MRv2) on YARN. Can
you configure a worker node to run aNodeManager daemon but not a DataNode daemon and still
have a function cluster?
A. Yes. The daemon will receive data from the NameNode to run Map tasks
B. Yes. The daemon will get data from another (non-local) DataNode to run Map tasks
C. Yes. The daemon will receive Reduce tasks only
Answer: A

Cloudera講座   CCA-505特典   CCA-505   CCA-505合格率

NO.5 Your cluster implements HDFS High Availability (HA). Your two NameNodes are named nn01
and nn02. What occurs when you execute the command: hdfs haadmin -failover nn01 nn02
A. nn02 becomes the standby NameNode and nn01 becomes the active NameNode
B. nn02 is fenced, and nn01 becomes the active NameNode
C. nn01 becomes the standby NamNode and nn02 becomes the active NAmeNode
D. nn01 is fenced, and nn02 becomes the active NameNode
Answer: D

Cloudera勉強法   CCA-505ガイド   CCA-505難易度
Explanation:
failover - initiate a failover between two NameNodes This subcommand causes a failover from the
first provided NameNode to the second. If the first NameNode is in the Standby state, this
command simply transitions the second to the Active state without error. If the first NameNode is in
the Active state, an attempt will be made to gracefully transition it to the Standby state. If this fails,
the fencing methods (as configured by dfs.ha.fencing.methods) will be attempted in order until one
of the methods succeeds. Only after this process will the second NameNode be transitioned to the
Active state. If no fencing method succeeds, the second NameNode will not be transitioned to the
Active state, and an error will be returned.

NO.6 A slave node in your cluster has four 2TB hard drives installed (4 x 2TB). The DataNode is
configured to store HDFS blocks on the disks. You set the value of the dfs.datanode.du.reserved
parameter to 100GB. How does this alter HDFS block storage?
A. A maximum of 100 GB on each hard drive may be used to store HDFS blocks
B. All hard drives may be used to store HDFS blocks as long as atleast 100 GB in total is available on
the node
C. 100 GB on each hard drive may not be used to store HDFS blocks
D. 25 GB on each hard drive may not be used to store HDFS blocks
Answer: B

Cloudera過去   CCA-505種類   CCA-505会場   CCA-505受験記   CCA-505認証試験

NO.7 You are the hadoop fs -put command to add a file "sales.txt" to HDFS. This file is small enough
that it fits into a single block, which is replicated to three nodes in your cluster (with a replication
factor of 3). One of the nodes holding this file (a single block) fails. How will the cluster handle the
replication of this file in this situation/
A. The cluster will re-replicate the file the next time the system administrator reboots the
NameNode daemon (as long as the file's replication doesn't fall two)
B. This file will be immediately re-replicated and all other HDFS operations on the cluster will halt
until the cluster's replication values are restored
C. The file will remain under-replicated until the administrator brings that nodes back online
D. The file will be re-replicated automatically after the NameNode determines it is under replicated
based on the block reports it receives from the DataNodes
Answer: B

Cloudera教材   CCA-505   CCA-505認定   CCA-505書籍

NO.8 Your cluster's mapped-site.xml includes the following parameters
<name>mapreduce.map.memory.mb</name> <value>4096<value/>
<name>mapreduce.reduce.memory,mb</name> <value>8192</value>
And your cluster's yarn-site.xml includes the following parameters
<name>yarn.nodemanager/vmen-pmem-ratio</name> <value>2.1</value>
What is the maximum amount of virtual memory allocated for each map before YARN will kill its
Container?
A. 4 GB
B. 17.2 GB
C. 24.6 GB
D. 8.2 GB
Answer: B

Cloudera虎の巻   CCA-505受験記   CCA-505短期

Cloudera CCD-410認定試験に楽に合格する対策

ずっと自分自身を向上させたいあなたは、CCD-410認定試験を受験する予定があるのですか。もし受験したいなら、試験の準備をどのようにするつもりですか。もしかして、自分に相応しい試験参考書を見つけたのでしょうか。では、どんな参考書は選べる価値を持っていますか。あなたが選んだのは、JPexamのCCD-410問題集ですか。もしそうだったら、もう試験に合格できないなどのことを心配する必要がないのです。

どのようにすればもっと楽にClouderaのCCD-410認定試験に合格することができるかについて考えたことがありますか。試験に合格する秘密を見つけましたか。それを行う方法がわからない場合、私は教えてあげましょう。実際には、認定試験に合格できる方法が多くあります。試験に関連する知識を一生懸命習得することがただ一つの方法です。今はそのようにしていますか。しかし、これが一番時間を無駄にして、望ましい効果を得られない方法です。それに、毎日仕事で忙しいあなたは、恐らく試験に準備する充分な時間がないでしょう。では、JPexamのCCD-410問題集を試しましょう。この試験参考書はきっとあなたに思えぬ良い結果を与えられます。

JPexamはClouderaのCCD-410認定試験に受かりたい各受験生に明確かつ顕著なソリューションを提供しました。当社はClouderaのCCD-410認定試験の詳しい問題と解答を提供します。当社のIT専門家が最も経験と資格があるプロな人々で、我々が提供したテストの問題と解答は実際の認定試験と殆ど同じです。これは本当に素晴らしいことです。それにもっと大切なのは、JPexamのサイトは世界的でCCD-410試験トレーニングによっての試験合格率が一番高いです。

試験番号：CCD-410問題集
試験科目：Cloudera Certified Developer for Apache Hadoop (CCDH)
最近更新時間：2014-04-06
問題と解答：全60問
100％の返金保証。1年間の無料アップデート。

JPexamはClouderaのCCD-410試験に向けて問題集を提供する専門できなサイトで、君の専門知識を向上させるだけでなく、一回に試験に合格するのを目標にして、君がいい仕事がさがせるのを一生懸命頑張ったウェブサイトでございます。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/CCD-410_exam.html

NO.1 In a MapReduce job with 500 map tasks, how many map task attempts will there be?
A. It depends on the number of reduces in the job.
B. Between 500 and 1000.
C. At most 500.
D. At least 500.
E. Exactly 500.
Answer: D

Cloudera   CCD-410   CCD-410   CCD-410   CCD-410認定試験   CCD-410認定証

NO.2 Your cluster’s HDFS block size in 64MB. You have directory containing 100 plain text files, each
of
which is 100MB in size. The InputFormat for your job is TextInputFormat. Determine how many
Mappers will run?
A. 64
B. 100
C. 200
D. 640
Answer: C

Cloudera   CCD-410   CCD-410

NO.3 Can you use MapReduce to perform a relational join on two large tables sharing a key?
Assume
that the two tables are formatted as comma-separated files in HDFS.
A. Yes.
B. Yes, but only if one of the tables fits into memory
C. Yes, so long as both tables fit into memory.
D. No, MapReduce cannot perform relational operations.
E. No, but it can be done with either Pig or Hive.
Answer: A

Cloudera   CCD-410問題集   CCD-410認定証

NO.4 Which process describes the lifecycle of a Mapper?
A. The JobTracker calls the TaskTracker’s configure () method, then its map () method and finally
its close () method.
B. The TaskTracker spawns a new Mapper to process all records in a single input split.
C. The TaskTracker spawns a new Mapper to process each key-value pair.
D. The JobTracker spawns a new Mapper to process all records in a single file.
Answer: C

Cloudera   CCD-410問題集   CCD-410認証試験   CCD-410

NO.5 In a large MapReduce job with m mappers and n reducers, how many distinct copy operations
will
there be in the sort/shuffle phase?
A. mXn (i.e., m multiplied by n)
B. n
C. m
D. m+n (i.e., m plus n)
E. E.mn(i.e., m to the power of n)
Answer: A

Cloudera   CCD-410   CCD-410練習問題   CCD-410参考書

NO.6 For each intermediate key, each reducer task can emit:
A. As many final key-value pairs as desired. There are no restrictions on the types of those keyvalue
pairs (i.e., they can be heterogeneous).
B. As many final key-value pairs as desired, but they must have the same type as the intermediate
key-value pairs.
C. As many final key-value pairs as desired, as long as all the keys have the same type and all the
values have the same type.
D. One final key-value pair per value associated with the key; no restrictions on the type.
E. One final key-value pair per key; no restrictions on the type.
Answer: E

Cloudera   CCD-410認証試験   CCD-410   CCD-410   CCD-410

NO.7 MapReduce v2 (MRv2 /YARN) splits which major functions of the JobTracker into separate
daemons? Select two.
A. Heath states checks (heartbeats)
B. Resource management
C. Job scheduling/monitoring
D. Job coordination between the ResourceManager and NodeManager
E. Launching tasks
F. Managing file system metadata
G. MapReduce metric reporting
H. Managing tasks
Answer: B,D

Cloudera   CCD-410   CCD-410認定試験   CCD-410問題集   CCD-410認定証

NO.8 When is the earliest point at which the reduce method of a given Reducer can be called?
A. As soon as at least one mapper has finished processing its input split.
B. As soon as a mapper has emitted at least one record.
C. Not until all mappers have finished processing all records.
D. It depends on the InputFormat used for the job.
Answer: C

Cloudera   CCD-410   CCD-410参考書   CCD-410問題集

NO.9 You need to move a file titled “weblogs” into HDFS. When you try to copy the file, you can’t.
You
know you have ample space on your DataNodes. Which action should you take to relieve this
situation and store more files in HDFS?
A. Increase the block size on all current files in HDFS.
B. Increase the block size on your remaining files.
C. Decrease the block size on your remaining files.
D. Increase the amount of memory for the NameNode.
E. Increase the number of disks (or size) for the NameNode.
F. Decrease the block size on all current files in HDFS.
Answer: C

Cloudera   CCD-410問題集   CCD-410   CCD-410認定試験   CCD-410
10. Indentify which best defines a SequenceFile?
A. A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable
objects
B. A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable
objects
C. A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable
objects, in sorted order.
D. A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key
must be the same type. Each value must be the same type.
Answer: D

Cloudera参考書   CCD-410   CCD-410参考書   CCD-410認定試験   CCD-410

JPexamは最新のIIA-CIA-Part1問題集と高品質の70-688問題と回答を提供します。JPexamのVCP5-DCV VCEテストエンジンとMB5-858試験ガイドはあなたが一回で試験に合格するのを助けることができます。高品質のCUR-051 PDFトレーニング教材は、あなたがより迅速かつ簡単に試験に合格することを100％保証します。試験に合格して認証資格を取るのはそのような簡単なことです。

記事のリンク：http://www.jpexam.com/CCD-410_exam.html

Cloudera CCA-410試験の認証資格は一層重要になった

多くのIT者がClouderaのCCA-410認定試験を通してIT業界の中で良い就職機会を得たくて、生活水準も向上させたいです。でも多くの人が合格するために大量の時間とエネルギーをかかって、無駄になります。同等の効果は、JPexamは君の貴重な時間とお金を節約するだけでなく１００％の合格率を保証いたします。もし弊社の商品が君にとっては何も役割にならなくて全額で返金いたいます。

JPexam ClouderaのCCA-410試験問題集は実践の検査に合格しますから、広い研究と実際を基づいている経験を提供できます。JPexamはIT領域の10年以上の認定経験を持っていますから、問題と解答に含まれています。CCA-410試験に準備するためにインターネットで色々なトレーニングツールを見つけることができますが、JPexam のCCA-410試験資料は最も良いトレーニング資料です。、弊社は最全面的な認証試験問題と解答を提供するだけでまく、一年間の無料更新サービスも提供いたします。

試験番号：CCA-410問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop CDH4
最近更新時間：2014-03-06
問題と解答：全97問
100％の返金保証。1年間の無料アップデート。

この情報の時代には、IT業界にとても注目され、この強い情報技術業界にIT人材が得難いです。こうしてCloudera認定試験がとても重要になります。でも、この試験がとても難しくてIT者になりたい方が障害になっています。

あなたはこのような人々の一人ですか。さまざまな資料とトレーニング授業を前にして、どれを選ぶか本当に困っているのです。もしそうだったら、これ以上困ることはないです。JPexamはあなたにとって最も正確な選択ですから。我々はあなたに試験問題と解答に含まれている全面的な試験資料を提供することができます。JPexamの解答は最も正確な解釈ですから、あなたがより良い知識を身につけることに助けになれます。JPexamを利用したら、ClouderaのCCA-410認定試験に受かることを信じています。それも我々が全てのお客様に対する約束です。

Clouderaの認定試験は現在とても人気がある試験ですね。この重要な認証資格をもうすでに手に入れましたか。例えば、もう既にCCA-410認定試験を受験したのですか。もしまだ受験していないなら、はやく行動する必要がありますよ。こんなに大切な資格を取らなくてはいけないです。ここで言いたいのは、どのようにすれば効率的にCCA-410認定試験の準備をして一回で試験に合格できるのかということです。

Cloudera CCA-410認証試験を通るために、いいツールが必要です。Cloudera CCA-410認証試験について研究の資料がもっとも大部分になって、JPexamは早くてCloudera CCA-410認証試験の資料を集めることができます。弊社の専門家は経験が豊富で、研究した問題集がもっとも真題と近づいて現場試験のうろたえることを避けます。

多くの人々は高い難度のIT認証試験に合格するのは専門の知識が必要だと思います。それは確かにそうですが、その知識を身につけることは難しくないとといわれています。IT業界ではさらに強くなるために強い専門知識が必要です。

購入前にお試し,私たちの試験の質問と回答のいずれかの無料サンプルをダウンロード：http://www.jpexam.com/CCA-410_exam.html

NO.1 Which three distcp features can you utilize on a Hadoop cluster?
A. Use distcp to copy files only between two clusters or more. You cannot use distcp to copy data
between directories inside the same cluster.
B. Use distcp to copy HBase table files.
C. Use distcp to copy physical blocks from the source to the target destination in your cluster.
D. Use distcp to copy data between directories inside the same cluster.
E. Use distcp to run an internal MapReduce job to copy files.
Answer: B,D,E

Cloudera参考書   CCA-410   CCA-410   CCA-410過去問

NO.2 What action occurs automatically on a cluster when a DataNode is marked as dead?
A. The NameNode forces re-replication of all the blocks which were stored on the dead DataNode.
B. The next time a client submits job that requires blocks from the dead DataNode, the JobTracker
receives no heart beats from the DataNode. The JobTracker tells the NameNode that the DataNode
is dead, which triggers block re-replication on the cluster.
C. The replication factor of the files which had blocks stored on the dead DataNode is temporarily
reduced, until the dead DataNode is recovered and returned to the cluster.
D. The NameNode informs the client which write the blocks that are no longer available; the client
then re-writes the blocks to a different DataNode.
Answer: A

Cloudera問題集   CCA-410認定証   CCA-410   CCA-410   CCA-410問題集

NO.3 Choose which best describe a Hadoop cluster's block size storage parameters once you set the
HDFS default block size to 64MB?
A. The block size of files in the cluster can be determined as the block is written.
B. The block size of files in the Cluster will all be multiples of 64MB.
C. The block size of files in the duster will all at least be 64MB.
D. The block size of files in the cluster will all be the exactly 64MB.
Answer: D

Cloudera過去問   CCA-410   CCA-410

NO.4 Which two updates occur when a client application opens a stream to begin a file write on a
cluster running MapReduce v1 (MRv1)?
A. Once the write stream closes on the DataNode, the DataNode immediately initiates a black
report to the NameNode.
B. The change is written to the NameNode disk.
C. The metadata in the RAM on the NameNode is flushed to disk.
D. The metadata in RAM on the NameNode is flushed disk.
E. The metadata in RAM on the NameNode is updated.
F. The change is written to the edits file.
Answer: E,F

Cloudera   CCA-410   CCA-410参考書   CCA-410認証試験

NO.5 How does HDFS Federation help HDFS Scale horizontally?
A. HDFS Federation improves the resiliency of HDFS in the face of network issues by removing the
NameNode as a single-point-of-failure.
B. HDFS Federation allows the Standby NameNode to automatically resume the services of an active
NameNode.
C. HDFS Federation provides cross-data center (non-local) support for HDFS, allowing a cluster
administrator to split the Block Storage outside the local cluster.
D. HDFS Federation reduces the load on any single NameNode by using the multiple, independent
NameNode to manage individual pars of the filesystem namespace.
Answer: D

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NO.6 How does the NameNode know DataNodes are available on a cluster running MapReduce v1
(MRv1)
A. DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available
DataNodes.
B. DataNodes heartbeat in the master on a regular basis.
C. The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes
respond.
D. The NameNode send a broadcast across the network when it first starts, and DataNodes
respond.
Answer: B

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NO.7 For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship
between tasks and task templates?
A. There are always at least as many task attempts as there are tasks.
B. There are always at most as many tasks attempts as there are tasks.
C. There are always exactly as many task attempts as there are tasks.
D. The developer sets the number of task attempts on job submission.
Answer: A

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試験番号：CCA-410問題集
試験科目：Cloudera Certified Administrator for Apache Hadoop CDH4
最近更新時間：2014-01-28
問題と解答：全97問
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NO.1 How does HDFS Federation help HDFS Scale horizontally?
A. HDFS Federation improves the resiliency of HDFS in the face of network issues by removing the
NameNode as a single-point-of-failure.
B. HDFS Federation allows the Standby NameNode to automatically resume the services of an active
NameNode.
C. HDFS Federation provides cross-data center (non-local) support for HDFS, allowing a cluster
administrator to split the Block Storage outside the local cluster.
D. HDFS Federation reduces the load on any single NameNode by using the multiple, independent
NameNode to manage individual pars of the filesystem namespace.
Answer: D

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NO.2 Which two updates occur when a client application opens a stream to begin a file write on a
cluster running MapReduce v1 (MRv1)?
A. Once the write stream closes on the DataNode, the DataNode immediately initiates a black
report to the NameNode.
B. The change is written to the NameNode disk.
C. The metadata in the RAM on the NameNode is flushed to disk.
D. The metadata in RAM on the NameNode is flushed disk.
E. The metadata in RAM on the NameNode is updated.
F. The change is written to the edits file.
Answer: E,F

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NO.3 How does the NameNode know DataNodes are available on a cluster running MapReduce v1
(MRv1)
A. DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available
DataNodes.
B. DataNodes heartbeat in the master on a regular basis.
C. The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes
respond.
D. The NameNode send a broadcast across the network when it first starts, and DataNodes
respond.
Answer: B

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NO.4 Choose which best describe a Hadoop cluster's block size storage parameters once you set the
HDFS default block size to 64MB?
A. The block size of files in the cluster can be determined as the block is written.
B. The block size of files in the Cluster will all be multiples of 64MB.
C. The block size of files in the duster will all at least be 64MB.
D. The block size of files in the cluster will all be the exactly 64MB.
Answer: D

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NO.5 Which three distcp features can you utilize on a Hadoop cluster?
A. Use distcp to copy files only between two clusters or more. You cannot use distcp to copy data
between directories inside the same cluster.
B. Use distcp to copy HBase table files.
C. Use distcp to copy physical blocks from the source to the target destination in your cluster.
D. Use distcp to copy data between directories inside the same cluster.
E. Use distcp to run an internal MapReduce job to copy files.
Answer: B,D,E

Cloudera   CCA-410   CCA-410   CCA-410認定証

NO.6 For a MapReduce job, on a cluster running MapReduce v1 (MRv1), what's the relationship
between tasks and task templates?
A. There are always at least as many task attempts as there are tasks.
B. There are always at most as many tasks attempts as there are tasks.
C. There are always exactly as many task attempts as there are tasks.
D. The developer sets the number of task attempts on job submission.
Answer: A

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NO.7 What action occurs automatically on a cluster when a DataNode is marked as dead?
A. The NameNode forces re-replication of all the blocks which were stored on the dead DataNode.
B. The next time a client submits job that requires blocks from the dead DataNode, the JobTracker
receives no heart beats from the DataNode. The JobTracker tells the NameNode that the DataNode
is dead, which triggers block re-replication on the cluster.
C. The replication factor of the files which had blocks stored on the dead DataNode is temporarily
reduced, until the dead DataNode is recovered and returned to the cluster.
D. The NameNode informs the client which write the blocks that are no longer available; the client
then re-writes the blocks to a different DataNode.
Answer: A

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NO.1 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

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NO.2 Under default settings, which feature of HBase ensures that data won't be lost in the event of
a Region Server failure?
A. AllHBase activity is written to the WAL, which is stored in HDFS
B. All operations are logged on theHMaster.
C. HBase is ACID compliant, which guarantees that itis Durable.
D. Data is stored on the local filesystem of the RegionServer.
Answer: A

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NO.3 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 queryZooKeepertofind 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. Theclientapplication will fail with a runtime error.
Answer: A

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NO.4 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.
Answer: C

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NO.5 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

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NO.1 The failure of which daemon makes HDFS unavailable on a cluster running MapReduce v1
(MRv1)?
A. Node Manager
B. Application Manager
C. Resource Manager
D. Secondary NameNode
E. NameNode
F. DataNode
Answer: E

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NO.2 Identify the function performed by the Secondary NameNode daemon on a cluster configured
to
run with a single NameNode.
A. In this configuration, the Secondary NameNode performs a checkpoint operation on the files by
the NameNode.
B. In this configuration, the Secondary NameNode is standby NameNode, ready to failover and
provide high availability.
C. In this configuration, the Secondary NameNode performs deal-time backups of the NameNode.
D. In this configuration, the Secondary NameNode servers as alternate data channel for clients to
reach HDFS, should the NameNode become too busy.
Answer: A

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NO.3 Which two features does Kerberos security add to a Hadoop cluster?
A. Authentication for user access to the cluster against a central server
B. Encryption for data on disk ("at rest")
C. Encryption on all remote procedure calls (RPCs)
D. User authentication on all remote procedure calls (RPcs)
E. Root access to the cluster for users hdfs and mapred but non-root acess clients
Answer: C,D

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10. Which three processes does HDFS High Availability (HA) enable on your cluster?
A. Automatically 'fail over' between NameNodes if one goes down
B. Write data to two clusterssimultaneously
C. Shut one NameNode down for maintenance without halting the cluster
D. Manually 'fail over' between NameNodes
E. Configure unlimited hot standby NameNode.
Answer: A,C,D

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NO.4 Compare the hardware requirements of the NameNode with that of the DataNodes in a
Hadoop
cluster running MapReduce v1 (MRv1):
A. The NameNode requires more memory and requires greater disk capacity than the DataNodes.
B. The NameNode and DataNodes should the same hardware configuration.
C. The NameNode requires more memory and no disk drives.
D. The NameNode requires more memory but less disk capacity.
E. The NameNode requires less memory and less disk capacity than the DataNodes.
Answer: D

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NO.5 What does CDH packaging do on install to facilitate Kerberos security setup?
A. Automatically configure permissions for log files at $MAPPED_LOG_DIR/userlogs
B. Creates and configures you kdc with default cluster values.
C. Creates users for hdfs and mapreduce to facilitate role assignment.
D. Creates a set of pre-configured Kerberos keytab files and their permissions.
E. Creates directories for temp, hdfs, and mapreduce with correct permissions.
Answer: C

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NO.6 You have a cluster running with the FIFO scheduler enabled. You submit a large job A to the
cluster which you expect to run for one hour. Then, you submit job B to the cluster, which you
expect to run a couple of minutes only. Let’s assume both jobs are running at the same priority.
How does the FIFO scheduler execute the jobs? (Choose 3)
A. The order of execution of tasks within a job may vary.
B. When a job is submitted, all tasks belonging to that job are scheduled.
C. Given jobs A and B submitted in that order, all tasks from job A will be scheduled before all
tasks from job B.
D. Since job B needs only a few tasks, if might finish before job A completes.
Answer: A,B,C

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NO.7 A client wants to read a file from HDFS. How does the data get from the DataNodes to the
client?
A. The NameNode reads the blocks from the DataNodes, and caches them. Then, the application
reads the blocks from the NameNode.
B. The application reads the blocks directly from the DataNodes.
C. The blocks are sent to a single DataNode, then the application reads the blocks from that Data
Node.
Answer: B

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NO.8 How does the NameNode know DataNodes are available on a cluster running MapReduce v1
(MRv1)
A. DataNodes listed in the dfs.hosts file. The NameNode uses as the definitive list of available
DataNodes.
B. DataNodes heartbeat in the master on a regular basis.
C. The NameNode broadcasts a heartbeat on the network on a regular basis, and DataNodes
respond.
D. The NameNode send a broadcast across the network when it first starts, and DataNodes
respond.
Answer: B

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NO.9 In HDFS, you view a file with rw-r--r-- set as its permissions. What does this tell you about the
file?
A. The file cannot be deleted by anyone but the owner
B. The file cannot be deleted by anyone
C. The file cannot be run as a MapReduce job
D. The file’s contents can be modified by the owner, but no-one else
E. As a Filesystem in Userspace (FUSE), HDFS files are available to all user’s on a cluster
regardless of their underlying POSIX permissions.
Answer: A

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