CCA-410の無料問題集（97題）、CCA-410認定試験参考書

Cloudera CCA-410 問題集

試験コード：CCA-410

試験名称：Cloudera Certified Administrator for Apache Hadoop CDH4

最近更新時間：2024-11-17

問題と解答：全97問

CCA-410 無料でデモをダウンロード：

PDF版 Demo ソフト版 Demo オンライン版 Demo

無料問題集CCA-410 資格取得

質問 1：
You set mapred.tasktracker.reduce.tasks.maximum to a value of 4 on a cluster running mapreduce v1 (MRv1). How many reducers will run for any given job?
A. The number of reducer's for any given job is set by the developer
B. Maximum of 4 reducers, but the actual number of reducers that run for any given job is based on the volume of input data
C. Four reducer's will run. Once set by the cluster administrator, this parameter can't be overridden
D. a maximum of 4 reducer's, but the actual number of reducer's that run for any given job is based on the volume intermediate data.
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 2：
You are planning a Hadoop duster, and you expect to be receiving just under 1TB of data per week which will be stored on the cluster, using Hadoop's default replication. You decide that your slave nodes will be configured with 4 x 1TB disks.
Calculate how many slave nodes you need to deploy at a minimum to store one year's worth of data.
A. 50 slave nodes
B. 100 slave nodes
C. 100 slave nodes
D. 10 slave nodes
正解：A
解説: (Topexam メンバーにのみ表示されます)

質問 3：
What two processes must you do if you are running a Hadoop cluster with a single NameNode and six DataNodes, and you want to change a configuration parameter so that it affects all six DataNodes.
A. You must restart all six DataNode daemons to apply the changes to the cluster.
B. You don't need to restart any daemon, as they will pick up changes automatically.
C. You must modify the configuration files on the NameNode only. DataNodes read their configuration from the master nodes.
D. You must modify the configuration files on only one of the DataNode machine
E. You must modify the configuration files on each of the six DataNode machines.
F. You must restart the NameNode daemon to apply the changes to the cluster
正解：C,F

質問 4：
What is the recommended disk configuration for slave nodes in your Hadoop cluster with 6 x 2 TB hard drives?
A. RAID 10
B. JBOD
C. RAID 5
D. RAID 1+0
正解：B
解説: (Topexam メンバーにのみ表示されます)

質問 5：
What metadata is stored on a DataNode when a block is written to it?
A. Information on the file's location in HDFS.
B. None. Only the block itself is written.
C. Checksums for the data in the block, as a separate file.
D. Node location of each block belonging to the same namespace.
正解：D
解説: (Topexam メンバーにのみ表示されます)

質問 6：
Identify four characteristics of a 300MB file that has been written to HDFS with block size of 128MB and all other Hadoop defaults unchanged?
A. The file will consume 1152MB of space in the cluster
B. Each block will be replicated three times
C. The third Initial block will be 44 MB
D. Each block will be replicated nine times
E. Two of the initial blocks will be 128MB
F. The third block will be 64MB
G. The file will be split into three blocks when initially written into the cluster
H. All three blocks will be 128MB
正解：B,C,E,G
解説: (Topexam メンバーにのみ表示されます)

質問 7：
When planning a hadoop cluster, what general rule governs the hardware requirements between master nodes and slave nodes?
A. The master nodes requires more memory but less disk capacity
B. The master and slave nodes should have the same hardware configuration
C. The master nodes requires more memory and no disk drives
D. the master nodes requires less memory and fewer number disk drives than the slave nodes
E. The master nodes require more memory and greater disk capacity then the slave nodes
正解：A
解説: (Topexam メンバーにのみ表示されます)

弊社は無料Cloudera CCA-410サンプルを提供します

お客様は問題集を購入する時、問題集の質量を心配するかもしれませんが、我々はこのことを解決するために、お客様に無料CCA-410サンプルを提供いたします。そうすると、お客様は購入する前にサンプルをダウンロードしてやってみることができます。君はこのCCA-410問題集は自分に適するかどうか判断して購入を決めることができます。

CCA-410試験ツール：あなたの訓練に便利をもたらすために、あなたは自分のペースによって複数のパソコンで設置できます。

安全的な支払方式を利用しています

Credit Cardは今まで全世界の一番安全の支払方式です。少数の手続きの費用かかる必要がありますとはいえ、保障があります。お客様の利益を保障するために、弊社のCCA-410問題集は全部Credit Cardで支払われることができます。

領収書について：社名入りの領収書が必要な場合、メールで社名に記入していただき送信してください。弊社はPDF版の領収書を提供いたします。

TopExamは君にCCA-410の問題集を提供して、あなたの試験への復習にヘルプを提供して、君に難しい専門知識を楽に勉強させます。TopExamは君の試験への合格を期待しています。

弊社のCloudera CCA-410を利用すれば試験に合格できます

弊社のCloudera CCA-410は専門家たちが長年の経験を通して最新のシラバスに従って研究し出した勉強資料です。弊社はCCA-410問題集の質問と答えが間違いないのを保証いたします。

この問題集は過去のデータから分析して作成されて、カバー率が高くて、受験者としてのあなたを助けて時間とお金を節約して試験に合格する通過率を高めます。我々の問題集は的中率が高くて、100％の合格率を保証します。我々の高質量のCloudera CCA-410を利用すれば、君は一回で試験に合格できます。

弊社は失敗したら全額で返金することを承諾します

我々は弊社のCCA-410問題集に自信を持っていますから、試験に失敗したら返金する承諾をします。我々のCloudera CCA-410を利用して君は試験に合格できると信じています。もし試験に失敗したら、我々は君の支払ったお金を君に全額で返して、君の試験の失敗する経済損失を減少します。

一年間の無料更新サービスを提供します

君が弊社のCloudera CCA-410をご購入になってから、我々の承諾する一年間の更新サービスが無料で得られています。弊社の専門家たちは毎日更新状態を検査していますから、この一年間、更新されたら、弊社は更新されたCloudera CCA-410をお客様のメールアドレスにお送りいたします。だから、お客様はいつもタイムリーに更新の通知を受けることができます。我々は購入した一年間でお客様がずっと最新版のCloudera CCA-410を持っていることを保証します。

Cloudera Certified Administrator for Apache Hadoop CDH4 認定 CCA-410 試験問題:

1. What is the rule governing the formatting of the underlying filesystem in the hadoop cluster?

A) They must all use the same filesystem as the namenode
B) They must all be left as unformatted, rawdisk;hadoop uses raw unformatted disk for HDFS
C) They can use different file system
D) they must all be left as formatted raw disk, hadoop format them automatically
E) They must all use the same file system but this does not need to be the same filesystem as the filesystem used by the namenode

2. Which two occur when individual blocks are returned to DATANODE on a cluster local filesystem?

A) A metadata file is written to the datanode containing the checksums for each block
B) The datanode runs a block scanner datablock scanner to verify the return blocks.
C) The datanode updates it's log of checkum verification
D) A metadata file is return to the datanode containing all the other node locations in the namespace
E) The datanode writes a metadata file with the name of the file the block is associated with

3. What is the smallest number of slave nodes you would need to configure in your hadoop cluster to
store 100TB of data, using Hadoop default replication values, on nodes with 10TB of RAW disk space per node?

A) 40
B) 25
C) 10
D) 75
E) 100

4. What action occurs automatically on a cluster when a DataNode is marked as dead?

A) 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.
B) The NameNode forces re-replication of all the blocks which were stored on the dead DataNode.
C) 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.
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.

5. A client application opens a file write stream on your cluster. Which two metadata changes occur during a file write?

A) The change is written to the edits file
B) the metadata in Ram on the namenode is flushed to disk
C) The change is written to the namenode disk
D) The metadata in a Ram on the name node is updated
E) the change is written to the secondary namenode
F) the namenode triggers a block report to update block locations in the edits file
G) the change is written to the fsimage file