SOA Certified Professional 자격증 S90-20A 시험덤프

ITExamDump 에서는 IT인증시험에 대비한 퍼펙트한SOA Certified Professional 인증S90-20A덤프를 제공해드립니다. 시험공부할 시간이 충족하지 않은 분들은ITExamDump 에서 제공해드리는SOA Certified Professional 인증S90-20A덤프로 시험준비를 하시면 자격증 취득이 쉬워집니다. 덤프를 구매하시면 일년무료 업데이트서비스도 받을수 있습니다.

우리는 여러분이 시험패스는 물론 또 일년무료 업데이트서비스를 제공합니다.만약 시험에서 실패했다면 우리는 덤프비용전액 환불을 약속 드립니다.하지만 이런 일은 없을 것입니다.우리는 우리덤프로 100%시험패스에 자신이 있습니다. 여러분은 먼저 우리 ITExamDump사이트에서 제공되는SOA Certified Professional인증S90-20A시험덤프의 일부분인 데모 즉 문제와 답을 다운받으셔서 체험해보실 수 잇습니다.

우리ITExamDump에서는 각종IT시험에 관심있는분들을 위하여, 여러 가지 인증시험자료를 제공하는 사이트입니다. 우리ITExamDump는 많은 분들이 IT인증시험을 응시하여 성공할수록 도와주는 사이트입니다. 우리의 파워는 아주 대단하답니다. 여러분은 우리ITExamDump 사이트에서 제공하는SOA Certified Professional S90-20A관련자료의 일부분문제와답등 샘플을 무료로 다운받아 체험해봄으로 우리에 믿음이 생기게 될 것입니다.

저희가 알아본 데 의하면 많은it인사들이SOA Certified Professional인증S90-20A시험을 위하여 많은 시간을 투자하고 잇다고 합니다.하지만 특별한 학습 반 혹은 인터넷강이 같은건 선택하지 않으셨습니다.때문에 패스는 아주 어렵습니다.보통은 한번에 패스하시는 분들이 적습니다.우리 ITExamDump에서는 아주 믿을만한 학습가이드를 제공합니다.우리 ITExamDump에는SOA Certified Professional인증S90-20A테스트버전과SOA Certified Professional인증S90-20A문제와 답 두 가지 버전이 있습니다.우리는 여러분의SOA Certified Professional인증S90-20A시험을 위한 최고의 문제와 답 제공은 물론 여러분이 원하는 모든 it인증시험자료들을 선사할 수 있습니다.

시험 번호/코드: S90-20A

시험 이름: SOA Certified Professional (SOA Security Lab)

ITExamDump 의 SOA Certified Professional인증 S90-20A덤프는SOA Certified Professional인증 S90-20A시험에 도전장을 던진 분들이 신뢰할수 있는 든든한 길잡이 입니다. SOA Certified Professional인증 S90-20A시험대비 덤프뿐만아니라 다른 IT인증시험에 대비한 덤프자료도 적중율이 끝내줍니다. SOA Certified Professional인증 S90-20A시험이나 다른 IT인증자격증시험이나ITExamDump제품을 사용해보세요.투자한 덤프비용보다 훨씬 큰 이득을 보실수 있을것입니다.

ITExamDump의 SOA Certified Professional 인증 S90-20A시험덤프공부자료 출시 당시 저희는 이런 크나큰 인지도를 갖출수 있을지 생각도 못했었습니다. 저희를 믿어주시고 구매해주신 분께 너무나도 감사한 마음에 더욱 열심히 해나가자는 결심을 하였습니다. SOA Certified Professional 인증 S90-20A덤프자료는ITExamDump의 전문가들이 최선을 다하여 갈고닦은 예술품과도 같습니다.100% 시험에서 패스하도록 저희는 항상 힘쓰고 있습니다.

S90-20A 덤프무료샘플다운로드하기: http://www.itexamdump.com/S90-20A.html

NO.1 Service Consumer A sends a request message to Service A (1) after which Service A retrieves financial
data from Database A (2). Service A then sends a request message with the retrieved data to Service B
(3). Service B exchanges messages with Service C (4) and Service D (5), which perform a series of
calculations on the data and return the results to Service A. Service A uses these results to update
Database A (7) and finally sends a response message to Service Consumer A (8). Component B has
direct, independent access to Database A and is fully trusted by Database A. Both Component B and
Database A reside within Organization A. Service Consumer A and Services A, B, C, and D are external to
the organizational boundary of Organization A.
Component B is considered a mission critical program that requires guaranteed access to and fast
response from Database A. Service A was recently the victim of a denial of service attack, which resulted
in Database A becoming unavailable for extended periods of time (which further compromised
Component B). Additionally, Services B, C, and D have repeatedly been victims of malicious intermediary
attacks, which have further destabilized the performance of Service A.
How can this architecture be improved to prevent these attacks?
A. A utility service is created to encapsulate Database A and to assume responsibility for authenticating all
access to the database by Service A and any other service consumers. Due to the mission critical
requirements of Component B, the utility service further contains logic that strictly limits the amount of
concurrent requests made to Database A from outside the organizational boundary. The Data
Confidentiality and Data Origin Authentication patterns are applied to all message exchanged within the
external service composition in order to establish message-layer security.
B. Service Consumer A generates a private/public key pair and sends this public key and identity
information to Service A. Service A generates its own private/public key pair and sends it back to Service
Consumer A. Service Consumer A uses the public key of Service A to encrypt a randomly generated
session key and then sign the encrypted session key with the private key. The encrypted, signed session
key is sent to Service A. Now, this session key can be used for secure message-layer communication
between Service Consumer A and Service A. The Service Perimeter Guard pattern is applied to establish
a perimeter service that encapsulates Database A in order to authenticate all external access requests.
C. Services B, C, and D randomly generate Session Key K, and use this key to encrypt request and
response messages with symmetric encryption. Session Key K is further encrypted itself asymmetrically.
When each service acts as a service consumer by invoking another service, it decrypts the encrypted
Session Key K and the invoked service uses the key to decrypt the encrypted response. Database A is
replicated so that only the replicated version of the database can be accessed by Service A and other
external service consumers.
D. The Direct Authentication pattern is applied so that when Service Consumer A submits security
credentials, Service A will be able to evaluate the credentials in order to authenticate the request
message. If the request message is permitted, Service A invokes the other services and accesses
Database A. Database A is replicated so that only the replicated version of the database can be accessed
by Service A and other external service consumers.
Answer: A

SOA Certified Professional   S90-20A자격증   S90-20A자료   S90-20A   S90-20A인증

NO.2 Service A exchanges messages with Service B multiple times during the same runtime service activity.
Communication between Services A and B has been secured using transport-layer security. With each
service request message sent to Service B (1A. IB), Service A includes an
X.509 certificate, signed by an external Certificate Authority (CA). Service B validates the certificate by
retrieving the public key of the CA (2A. 2B) and verifying the digital signature of the
X.509 certificate. Service B then performs a certificate revocation check against a separate external CA
repository (3A, 3B). No intermediary service agents reside between Service A and Service B.
To fulfill a new security requirement, Service A needs to be able to verify that the response message sent
by Service B has not been modified during transit. Secondly, the runtime performance between Services
A and B has been unacceptably poor and therefore must be improved without losing the ability to verify
Service A's security credentials. It has been determined that the latency is being caused by redundant
security processing carried out by Service B.
Which of the following statements describes a solution that fulfills these requirements?
A. Apply the Trusted Subsystem pattern to introduce a utility service that performs the security processing
instead of Service B. The utility service can verify the security credentials of request messages from
Service A and digitally sign messages sent to Service A to enable verification of message integrity.
Furthermore, the utility service can perform the verification of security credentials submitted by Service A
only once per runtime service activity. After the first messageexchange, it can issue a SAML token to
Service A that gets stored within the current session. Service A can then use this session-based token
with subsequent message exchange. Because SAML tokens have a very small validity period (in contrast
to X.509 certificates), there is no need to perform a revocation check with every message exchange.
B. Service B needs to be redesigned so that it performs the verification of request messages from Service
A only for the first message exchange during the runtime service activity. Thereafter, it can issue a SAML
token to Service A that gets stored within the current session. Service A then uses this session-based
token with subsequent message exchanges. Because SAML tokens have a very small validity period (in
contrast to X.509 certificates), there is no need to perform a revocation check with every message
exchange.
C. WS-SecurityPolicy transport binding assertions can be used to improve performance via
transport-layer security The use of symmetric keys can keep the encryption and decryption overhead to a
minimum, which will further reduce the latency between Service A and Service B. By encrypting the
messages, attackers cannot modify message contents, so no additional actions for integrity verification
are needed.
D. The Data Origin Authentication pattern can be applied together with the Service Perimeter Guard
pattern to establish a perimeter service that can verify incoming request messages sent to Service B and
to filter response messages sent to Service A. The repository containing the verification information about
the Certificate Authorities can be replicated in the trust domain of the perimeter service. When access is
requested by Service A, the perimeter service evaluates submitted security credentials by checking them
against the locally replicated repository. Furthermore, it can encrypt messages sent to Service A by
Service B. and attach a signed hash value.
Answer: A

SOA Certified Professional자료   S90-20A pdf   S90-20A자격증

SOA Certified Professional인증 S90-20A시험은 IT인증자격증중 가장 인기있는 자격증을 취득하는 필수시험 과목입니다. SOA Certified Professional인증 S90-20A시험을 패스해야만 자격증 취득이 가능합니다. ITExamDump의SOA Certified Professional인증 S90-20A는 최신 시험문제 커버율이 높아 시험패스가 아주 간단합니다. SOA Certified Professional인증 S90-20A덤프만 공부하시면 아무런 우려없이 시험 보셔도 됩니다. 시험합격하면 좋은 소식 전해주세요.