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NEW QUESTION: 1
企業が3層アプリケーションをAWSに移行しています。アプリケーションにはMySQLデータベースが必要です。これまで、アプリケーションユーザーは、新しいエントリを作成するときにアプリケーションのパフォーマンスが低いと報告していました。これらのパフォーマンスの問題は、ユーザーが勤務時間中にアプリケーションからさまざまなリアルタイムレポートを生成したことが原因でした。
アプリケーションをAWSに移動すると、アプリケーションのパフォーマンスが向上するのはどのソリューションですか？
A. プロビジョニングされた容量でAmazon DynamoDBテーブルにデータをインポートします。レポートにDynamoDBを使用するようにアプリケーションをリファクタリングします。
B. コンピューティング最適化Amazon EC2インスタンスにデータベースを作成します。コンピューティングリソースがオンプレミスデータベースを超えていることを確認します。
C. 複数のリードレプリカを持つAmazon Aurora MySQLマルチAZ DBクラスターを作成します。レポートのアプリケーションリーダーエンドポイントを構成します。
D. Amazon Aurora MySQLマルチAZ DBクラスターを作成します。クラスターのバックアップインスタンスをレポートのエンドポイントとして使用するようにアプリケーションを構成します。
Answer: D
Explanation:
Amazon RDS Read Replicas Now Support Multi-AZ Deployments
Starting today, Amazon RDS Read Replicas for MySQL and MariaDB now support Multi-AZ deployments. Combining Read Replicas with Multi-AZ enables you to build a resilient disaster recovery strategy and simplify your database engine upgrade process.
Amazon RDS Read Replicas enable you to create one or more read-only copies of your database instance within the same AWS Region or in a different AWS Region. Updates made to the source database are then asynchronously copied to your Read Replicas. In addition to providing scalability for read-heavy workloads, Read Replicas can be promoted to become a standalone database instance when needed.
Amazon RDS Multi-AZ deployments provide enhanced availability for database instances within a single AWS Region. With Multi-AZ, your data is synchronously replicated to a standby in a different Availability Zone (AZ). In the event of an infrastructure failure, Amazon RDS performs an automatic failover to the standby, minimizing disruption to your applications.
You can now use Read Replicas with Multi-AZ as part of a disaster recovery (DR) strategy for your production databases. A well-designed and tested DR plan is critical for maintaining business continuity after a disaster. A Read Replica in a different region than the source database can be used as a standby database and promoted to become the new production database in case of a regional disruption.
You can also combine Read Replicas with Multi-AZ for your database engine upgrade process. You can create a Read Replica of your production database instance and upgrade it to a new database engine version. When the upgrade is complete, you can stop applications, promote the Read Replica to a standalone database instance, and switch over your applications. Since the database instance is already a Multi-AZ deployment, no additional steps are needed.
Overview of Amazon RDS Read Replicas
Deploying one or more read replicas for a given source DB instance might make sense in a variety of scenarios, including the following:
Scaling beyond the compute or I/O capacity of a single DB instance for read-heavy database workloads. You can direct this excess read traffic to one or more read replicas.
Serving read traffic while the source DB instance is unavailable. In some cases, your source DB instance might not be able to take I/O requests, for example due to I/O suspension for backups or scheduled maintenance. In these cases, you can direct read traffic to your read replicas. For this use case, keep in mind that the data on the read replica might be "stale" because the source DB instance is unavailable.
Business reporting or data warehousing scenarios where you might want business reporting queries to run against a read replica, rather than your primary, production DB instance.
Implementing disaster recovery. You can promote a read replica to a standalone instance as a disaster recovery solution if the source DB instance fails.
https://aws.amazon.com/about-aws/whats-new/2018/01/amazon-rds-read-replicas-now-support-multi-az-deployments/
https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.html

NEW QUESTION: 2
Which two resource types can be limited on the vApp level? (Choose two.)
A. Storage
B. Network
C. CPU
D. Memory
Answer: C,D
Explanation:
Reference https://docs.vmware.com/en/VMware-
vSphere/5.5/com.vmware.vsphere.vm_admin.doc/GUID-9902FD4C-4727-43F7-AEAF-
901DA4CB4D60.html

NEW QUESTION: 3
最高情報セキュリティ責任者（CISO）は、ゼロデイ攻撃から保護する方法を求めています。 CISOは、認識されていない脅威が企業データを危険にさらし、結果として規制上の罰金や企業の評判の低下を招く可能性があることを懸念しています。ネットワークはほぼフラットで、スタッフ/ゲストワイヤレス機能が分割されています。
未知の脅威から保護するために、次の機器のうちどれを配備する必要がありますか？
A. すべての企業データをホストするオフサイトデータセンターの実装、およびすべてのクライアントコンピューティングニーズに対するVDIの展開
B. クラウドベースのウイルス対策ソリューション、ローカル管理者として実行され、定義の更新のためのプッシュテクノロジを使用
C. クラウドベースの脆弱性および脅威フィードへの通信リンクを備えた動作ベースのIPS
D. 管理VLANで分離されたホストベースのヒューリスティックIPS、境界ファイアウォールACLの直接制御
Answer: C

NEW QUESTION: 4
A network engineer wants to send multicast traffic between two routers that are separated by an IP cloud.
The network engineer has access to the two routers, but does not have administrative control of the devices within the IP cloud. How can this goal be accomplished?
A. Configure a crypto-map based site to site VPN between the two routers
B. Use IP PIM derive mode
C. Turn on IP multicast routing
D. Configure a genetic routing encapsulation tunnel
Answer: C