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NEW QUESTION: 1
귀사는 수천 개의 EC2 인스턴스를 관리합니다. 모든 서버에 중요한 보안 결함이 없는지 확인해야합니다. 이를 위해 다음 중 수행 할 수있는 것은 무엇입니까? 아래 옵션 중에서 2 개의 답변을 선택하십시오.
선택 해주세요:
A. AWS 관리자를 사용하여 서버에 중대한 결함이 없는지 확인하십시오.
B. AWS 인스펙터를 사용하여 서버 패치
C. AWS Config를 사용하여 서버에 중대한 결함이 없는지 확인하십시오.
D. AWS SSM을 사용하여 서버 패치
Answer: A,D
Explanation:
The AWS Documentation mentions the following on AWS Inspector
Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on AWS. Amazon Inspector automatically assesses applications for vulnerabilities or deviations from best practices. After performing an assessment, Amazon Inspector produces a detailed list of security findings prioritized by level of severity. These findings can be reviewed directly or as part of detailed assessment reports which are available via the Amazon Inspector console or API.
Option A is invalid because the AWS Config service is not used to check the vulnerabilities on servers Option C is invalid because the AWS Inspector service is not used to patch servers For more information on AWS Inspector, please visit the following URL:
https://aws.amazon.com/inspector>
Once you understand the list of servers which require critical updates, you can rectify them by installing the required patches via the SSM tool.
For more information on the Systems Manager, please visit the following URL:
https://docs.aws.amazon.com/systems-manager/latest/APIReference/Welcome.html The correct answers are: Use AWS Inspector to ensure that the servers have no critical flaws.. Use AWS SSM to patch the servers (

NEW QUESTION: 2
トランザクションはどの3つの状況で完了しますか？ （3つ選択してください。）
A. 保留中のトランザクションの後にTRUNCATEステートメントが実行されたとき
B. ROLLBACKコマンドが実行されたとき
C. データ定義言語（DDL）ステートメントが実行されたとき
D. PL / SQL無名ブロックが実行されたとき
E. DELETEステートメントが実行されたとき
Answer: A,B,C
Explanation:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm

NEW QUESTION: 3
DRAG DROP
You plan to deploy two stored procedures named SP1 and SP2 that read data from the database.
Your company identifies the following requirements for each stored procedure:
* SP1 must allow dirty reads.
* SP2 must place range locks on the data to ensure read consistency.
You need to identify which isolation level you must set for each stored procedure. The solution must minimize the number of locks.
Which isolation level should you identify?
To answer, drag the appropriate isolation level to the correct stored procedure in the answer area. (Answer choices may be used once, more than once, or not at all.)

Answer:
Explanation:

Explanation:

Note:
* READ UNCOMMITTED
Specifies that statements can read rows that have been modified by other transactions but not yet committed.
Transactions running at the READ UNCOMMITTED level do not issue shared locks to prevent other transactions from modifying data read by the current transaction. READ
UNCOMMITTED transactions are also not blocked by exclusive locks that would prevent the current transaction from reading rows that have been modified but not committed by other transactions. When this option is set, it is possible to read uncommitted modifications, which are called dirty reads. Values in the data can be changed and rows can appear or disappear in the data set before the end of the transaction. This option has the same effect as setting NOLOCK on all tables in all SELECT statements in a transaction. This is the least restrictive of the isolation levels.
* SERIALIZABLE
Specifies the following:
Statements cannot read data that has been modified but not yet committed by other transactions.
No other transactions can modify data that has been read by the current transaction until the current transaction completes.
Other transactions cannot insert new rows with key values that would fall in the range of keys read by any statements in the current transaction until the current transaction completes.
Range locks are placed in the range of key values that match the search conditions of each statement executed in a transaction. This blocks other transactions from updating or inserting any rows that would qualify for any of the statements executed by the current transaction. This means that if any of the statements in a transaction are executed a second time, they will read the same set of rows. The range locks are held until the transaction completes. This is the most restrictive of the isolation levels because it locks entire ranges of keys and holds the locks until the transaction completes. Because concurrency is lower, use this option only when necessary.

NEW QUESTION: 4
Elastic Load Balancer（ELB）で構成されるWebアプリケーション用のVPCを設計する必要があります。
一連のWeb /アプリケーションサーバー、およびRDSデータベース。
インフラストラクチャ全体を2つのアベイラビリティーゾーンに分散させる必要があります。
データベースがインターネットから利用できないことを保証しながら、どのVPC設定が機能しますか？
A. ELB用に1つのパブリックサブネット、Webサーバー用に2つのプライベートサブネット、RDS用に2つのプライベートサブネット
B. ELB用の2つのパブリックサブネットWebサーバー用の2つのプライベートサブネットとRDS用の2つのプライベートサブネット
C. ELB用の1つのパブリックサブネットWebサーバー用の1つのパブリックサブネット、およびデータベース用の1つのプライベートサブネット
D. ELB用の2つのパブリックサブネットWebサーバー用の2つのパブリックサブネットと、RDS用の2つのパブリックサブネット
Answer: B
Explanation:
以下では、パブリックサブネットELBがプライベートサブネットEC2と通信していることも確認されています。
https://forums.aws.amazon.com/message.jspa?messageID=528818