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NEW QUESTION: 1
ストレージ管理者は、構成されたすべてのHost to LimitポリシーがGlobally Paused Mowであることに気付き、管理者はこれらのポリシーをアクティブスレートに入れることができますか？
A. [設定]> [パフォーマンス]ページで、ホストI / O制限設定を[アクティブ]に構成します
B. 「自分の設定」>「パフォーマンス」ページで、「ホストI / O制限」設定を「再開」に構成します
C. それぞれホストI / O制限ポーキーを選択し、ホストHO制限設定を再開に構成します。
D. それぞれにホストI / O制限ポリシーを選択し、ホストI / O制限設定をアクティブに構成します。
Answer: C

NEW QUESTION: 2
ソリューションアーキテクトは、プライマリウェブサイトが利用できない場合にユーザーがバックアップの静的エラーページにリダイレクトするソリューションを設計しています。プライマリウェブサイトのDNSレコードは、ドメインがApplication Load Balancer（ALB）を指しているAmazon Route 53でホストされています。ソリューションアーキテクトは、変更とインフラストラクチャのオーバーヘッドを最小限に抑えながら、会社のニーズを満たすために使用する必要がありますか？
A. Route 53レコードを更新して、遅延ベースのルーティングポリシーを使用するAmazon S3バケット内でホストされているバックアップ静的エラーページをレコードに追加して、トラフィックが最も応答性の高いエンドポイントに送信されるようにします
B. ルート53エイリアスレコードがALBを起点の1つとしてAmazon CloudFrontディストリビューションをポイントする次に、ディストリビューションのカスタムエラーページを作成します
C. エンドポイントRoute 53がインスタンスにリクエストを送信するのは、ALBのヘルスチェックが失敗した場合のみ、ALBと静的エラーページをホストするAmazon EC2インスタンスを使用してRoute 53アクティブ/アクティブ構成をセットアップします。
D. Route 53のヘルス-パッシブフェイルオーバー構成をセットアップします。Route53ヘルスチェックでALBエンドポイントが異常であると判断した場合、Amazon S3バケット内でホストされている静的エラーページにトラフィックを転送します
Answer: D
Explanation:
Explanation
Active-passive failover
Use an active-passive failover configuration when you want a primary resource or group of resources to be available the majority of the time and you want a secondary resource or group of resources to be on standby in case all the primary resources become unavailable. When responding to queries, Route 53 includes only the healthy primary resources. If all the primary resources are unhealthy, Route 53 begins to include only the healthy secondary resources in response to DNS queries.
To create an active-passive failover configuration with one primary record and one secondary record, you just create the records and specify Failover for the routing policy. When the primary resource is healthy, Route 53 responds to DNS queries using the primary record. When the primary resource is unhealthy, Route 53 responds to DNS queries using the secondary record.
How Amazon Route 53 averts cascading failures
As a first defense against cascading failures, each request routing algorithm (such as weighted and failover) has a mode of last resort. In this special mode, when all records are considered unhealthy, the Route 53 algorithm reverts to considering all records healthy.
For example, if all instances of an application, on several hosts, are rejecting health check requests, Route 53 DNS servers will choose an answer anyway and return it rather than returning no DNS answer or returning an NXDOMAIN (non-existent domain) response. An application can respond to users but still fail health checks, so this provides some protection against misconfiguration.
Similarly, if an application is overloaded, and one out of three endpoints fails its health checks, so that it's excluded from Route 53 DNS responses, Route 53 distributes responses between the two remaining endpoints.
If the remaining endpoints are unable to handle the additional load and they fail, Route 53 reverts to distributing requests to all three endpoints.
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-types.html
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/dns-failover-problems.html

NEW QUESTION: 3
A user is running one instance for only 3 hours every day. The user wants to save some cost with the instance. Which of the below mentioned Reserved Instance categories is advised in this case?
A. The user should use the AWS low utilized RI
B. The user should not use RI; instead only go with the on-demand pricing
C. The user should use the AWS medium utilized RI
D. The user should use the AWS high utilized RI
Answer: B
Explanation:
Explanation/Reference:
Explanation:
The AWS Reserved Instance provides the user with an option to save some money by paying a one-time fixed amount and then save on the hourly rate. It is advisable that if the user is having 30% or more usage of an instance per day, he should go for a RI. If the user is going to use an EC2 instance for more than
2200-2500 hours per year, RI will help the user save some cost. Here, the instance is not going to run for less than 1500 hours. Thus, it is advisable that the user should use the on-demand pricing.

NEW QUESTION: 4
A controller-based WLAN infrastructure has its controller on a different subnet than its APs. What device must be used to enable any communication between the Controller and the APs?
A. PoE Layer 2 switch
B. Wireless bridge
C. NTP server
D. Router
Answer: D
Explanation:
Explanation/Reference:
Reference: https://www.speaknetworks.com/cisco-wireless-controller-configuration/