コースの簡単な紹介

ほとんどのユーザーにとって、関連する資格試験へのアクセスが最初であるかもしれないので、資格試験に関連するコース内容の多くは複雑で難解です。 これらの無知な初心者によれば、S90.20試験問題は読みやすく、対応する例と同時に説明する一連の基本コースを設定し、SOA Security Lab試験問題でユーザーが見つけることができるようにしました 実生活と学んだ知識の実際の利用に対応し、ユーザーと記憶の理解を深めました。 シンプルなテキストメッセージは、カラフルなストーリーや写真の美しさを上げるに値する、S90.20テストガイドを初心者のためのゼロの基準に合うようにし、リラックスした幸せな雰囲気の中でより役立つ知識を習得します。 団結の状態を達成するために。

私たちのSOA Security Lab研究問題は質が高いです。 それでテストの準備をするためのすべての効果的で中心的な習慣があります。 私たちの職業的能力により、S90.20試験問題を編集するのに必要なテストポイントに同意することができます。 それはあなたの難しさを解決するための試験の中心を指しています。 最も重要なメッセージに対するS90.20テストガイドの質問と回答の最小数で、すべてのユーザーが簡単に効率的な学習を行えるようにし、余分な負担を増やさずに、最後にS90.20試験問題にユーザーがすぐに試験合格できるようにします。

デモをダウンロードする

簡潔な内容

分析後のすべての種類の試験の暦年に基づくエキスパートによるS90.20試験問題、それは開発動向に焦点を当てた試験論文に適合し、そしてあなたが直面するあらゆる種類の困難を要約し、ユーザーレビューを強調する 知識の内容を習得する必要があります。 そして他の教育プラットフォームとは異なり、SOA Security Lab試験問題は暦年試験問題の主な内容が長い時間の形式でユーザーの前に表示されていないが、できるだけ簡潔で目立つテキストで概説されていますS90.20テストガイドは、今年の予測トレンドの命題を正確かつ正確に表現しており、トピックデザインのシミュレーションを通して細心の注意を払っています。

真のシミュレーション環境

多くのユーザーが最初に試験に参加しているので、上記の試験と試験時間の分布は確かな経験を欠いており、したがって試験場所で混乱しがちであるため、つかむ時間は結局試験を完全に終わらせなかった。 この現象の発生を避けるために、SOA Security Lab試験問題は各試験シミュレーションテスト環境に対応する製品を持ち、ユーザーはプラットフォーム上の自分のアカウントにログオンし、同時に試験シミュレーションに参加したいものを選択します。S90.20試験問題は自動的にユーザーが実際のテスト環境のシミュレーションテストシステムと同じように提示され、ソフトウェア内蔵のタイマー機能は体系的な達成するために、ユーザーが時間をかけてより良い制御を助けることができます。S90.20テストガイドを使って問題を横から解決するためにユーザーのスピードを向上させるためにも。

SOA Security Lab 認定 S90.20 試験問題:

1. Service A has two specific service consumers, Service Consumer A and Service Consumer B (1). Both service consumers are required to provide security credentials in order for Service A to perform authentication using an identity store (2). If a service consumer's request message is successfully authenticated, Service A processes the request by exchanging messages with Service B (3) and then Service C (4). With each of these message exchanges, Service A collects data necessary to perform a query against historical data stored in a proprietary legacy system. Service A's request to the legacy system must be authenticated (5). The legacy system only provides access control using a single account. If the request from Service A is permitted, it will be able to access all of the data stored in the legacy system. If the request is not permitted, none of the data stored in the legacy system can be accessed. Upon successfully retrieving the requested data (6), Service A generates a response message that is sent back to either Service Consumer A or B.
The legacy system is also used independently by Service D without requiring any authentication. Furthermore, the legacy system has no auditing feature and therefore cannot record when data access from Service A or Service D occurs. If the legacy system encounters an error when processing a request, it generates descriptive error codes.

This service composition architecture needs to be upgraded in order to fulfill the following new security requirements: 1. Service Consumers A and B have different access permissions and therefore, data received from the legacy system must be filtered prior to issuing a response message to one of these two service consumers. 2. Service Consumer A's request messages must be digitally signed, whereas request messages from Service Consumer B do not need to be digitally signed.
Which of the following statements describes a solution that fulfills these requirements?

A) The Trusted Subsystem pattern is applied by introducing a utility service that encapsulates the legacy system. To support access by service consumers issuing request messages with and without digital signatures, policy alternatives are added to Service A's service contract. Service A authenticates the service consumer's request against the identity store and verifies compliance to the policy. Service A then creates a signed SAML assertion containing an authentication statement and the authorization decision. The utility service inspects the signed SAML assertions to authenticate the service consumer and then access the legacy system using a single account. The data returned by the legacy system is filtered by the utility service, according to the information in the SAML assertions.
B) The Trusted Subsystem pattern is applied together with the Message Screening pattern by introducing a utility service that encapsulated the legacy system and contains message screening logic. First, the utility service evaluates the incoming request messages to ensure that it is digitally signed, when necessary. After successful verification the request message is authenticated, and Service A performs the necessary processing. The data returned from the legacy system is filtered by the utility service's message screening logic in order to ensure that only authorized data is returned to Service Consumers A and B.
C) The Trusted Subsystem pattern is applied by introducing a utility service that encapsulates the legacy system. After successful authentication, Service A creates a signed SAML assertion stating what access level the service consumer has. The utility service inspects the signed SAML assertion in order to authenticate Service A.
The utility service accesses the legacy system using the account information originally provided by Service Consumer A or B.
The utility service evaluates the level of authorization of the original service consumer and filters data received from the legacy system accordingly.
D) The Trusted Subsystem pattern is applied by introducing a utility service that encapsulates the legacy system. Two different policies are created for Service A's service contract, only one requiring a digitally signed request message. The utility service accesses the legacy system using the single account. Service A authenticates the service consumer using the identity store and, if successfully authenticated, Service A send a message containing the service consumer's credentials to the utility service. The identity store is also used by the utility service to authenticate request messages received from Service A.
The utility service evaluates the level of authorization of the original service consumer and filters data received from the legacy system accordingly.

2. Service A has two specific service consumers, Service Consumer A and Service Consumer B (1). Both service consumers are required to provide security credentials in order for Service A to perform authentication using an identity store (2). If a service consumer's request message is successfully authenticated, Service A processes the request by exchanging messages with Service B (3) and then Service C (4). With each of these message exchanges, Service A collects data necessary to perform a query against historical data stored in a proprietary legacy system. Service A's request to the legacy system must be authenticated (5). The legacy system only provides access control using a single account. If the request from Service A is permitted, it will be able to access all of the data stored in the legacy system. If the request is not permitted, none of the data stored in the legacy system can be accessed. Upon successfully retrieving the requested data (6), Service A generates a response message that is sent back to either Service Consumer A or B.
The legacy system is also used independently by Service D without requiring any authentication. Furthermore, the legacy system has no auditing feature and therefore cannot record when data access from Service A or Service D occurs. If the legacy system encounters an error when processing a request, it generates descriptive error codes.

This service composition architecture needs to be upgraded in order to fulfill the following new security requirements: 1. Service Consumers A and B have different permission levels, and therefore, response messages sent to a service consumer must only contain data for which the service consumer is authorized. 2. All data access requests made to the legacy system must be logged. 3. Services B and C must be provided with the identity of Service A's service consumer in order to provide Service A with the requested data. 4.
Response messages generated by Service A cannot contain confidential error information about the legacy system.
Which of the following statements provides solutions that satisfy these requirements?

A) To correctly enforce access privileges, Services B and C must share the identity store with Service A and directly authenticate Service Consumer A or B.
Furthermore, Services B and C must each maintain two policies: one for Service Consumer A and one for Service Consumer B.
After receiving a request message from a Service A.
Services B and C must evaluate the validity of the request by using the identity store and the appropriate policy.
Service Consumers A and B are required to submit the necessary security credentials to the legacy system as part of the request message sent to Service A.
After verifying the credentials, the legacy system either performs the necessary processing or sends the response to Service A or denies access and sends an error message directly to Service Consumer A or B.
The Message Screening pattern is applied to Service A so that it can perform message screening logic in order to filter out unauthorized data coming from the legacy system.
B) Apply the Service Perimeter Guard pattern to provide selective access privileges to Service Consumers A and B.
The resulting perimeter service shares the identity store with Service A, which it uses to authenticate each request message. If authentication is successful, the request message is forwarded to Service A.
Service A then also authenticates the service consumer and retrieves the service consumer's security profile from the identity store upon successful authentication. Each service consumer's security profile includes its authorized level of access. Service consumer authentication is subsequently performed using digital certificates. The Exception Shielding pattern is further applied to the perimeter service in order to prevent the leakage of confidential error information.
C) Apply the Trusted Subsystem pattern by introducing a new utility service that encapsulates data access to the legacy system. The utility service evaluates request messages by authenticating the service consumer against the identity store and also verifying the digital signature of each request. If the request is permitted, Service A forwards the service consumer's credentials to Services B and C, and to the legacy system. The response messages from Services B and C are returned to Service A, while responses from the legacy system are processed by the utility service. Logic is added to the utility service so that it can log access requests made to the legacy system.
D) Apply the Trusted Subsystem pattern by introducing a new utility service that encapsulates data access to the legacy system. After Service A authenticates a service consumer it creates a signed SAML assertion containing authentication and authorization information. The SAML assertions are used by Service A to convey the identity information of Service Consumer A or B to Services B and C.
The utility service filters response messages to the service consumer based on the information in the SAML assertions. The utility service keeps a log of the all data access requests made to the legacy system. The Exception Shielding pattern is further applied to the utility service in order to prevent the leakage of confidential error information.

3.

A)
B) Apply the Data Origin Authentication pattern together with the Data Confidentiality pattern in order to establish message-layer security that guarantees the confidentiality and integrity of messages exchanged by Service Consumer A and Service A.
Further, a security policy can be created to require that security credentials submitted to Service A must be digitally signed and encrypted and also contain a timestamp to validate the actual time the request was issued. Industry standards that can be used for this solution are WS- Policy, WS-SecurityPolicy, XML-Encryption, and XML-Signature.
C) Apply the Service Perimeter Guard pattern together with the Trusted Subsystem pattern to establish a perimeter service that can perform security functions on behalf of Service A.
The utility service can verify the validity of the request messages from Service Consumer A by authenticating the request message against an identity store. If the request message is authenticated, the utility service then sends it to Service A for further processing. All communications between Service A and Service Consumer A can be encrypted using the public key of the intended recipient, and signed using the private key of the sender.
Industry standards that can be used for this solution are XML-Encryption, XML-Signature, and WS-Trust.
D) Apply the Trusted Subsystem pattern together with the Data Origin Authentication pattern in order to establish a utility service that performs the security processing on behalf of Service A.
Service Consumer A must digitally sign all request messages and encrypt the credential information using the public key of the utility service. The utility service can then verify the security credentials and the digital signature to establish the validity of the request message. If the request message is permitted, the utility service establishes a composite trust domain that encompasses Service Consumer A, Service A, Database A, and the legacy system. Because all communications remain within a single trust domain, malicious intermediaries will not be able to gain access to any exchanged data.
E) Apply the Service Perimeter Guard pattern to establish a perimeter service that can perform security functions on behalf of Service A.
Next, apply the Data Confidentiality pattern so that the security credential information provided by Service Consumer A with the request message is encrypted with the secret key shared between the perimeter service and Service Consumer A.
The perimeter service evaluates the credentials and if successfully authenticated, forwards the request message to Service A.
Transport-layer security is used to protect message exchanges between Service A and Service Consumer

質問と回答：

質問 # 1 正解： A

質問 # 2 正解： D

質問 # 3 正解： A、B