S90-20A Certified SOA Security Specialist Exam

Will not overlook when university assemblies really taught kids just one thing? Today you’ll find such a lot of school assemblies that supply very little further than “fluff.” Laser light-weight displays, senseless recreation reveals, jugglers — what do these truly have to do with school in almost any case?American pupils are seen as keeping guiding the remainder of the globe with proficiency in the several “R”s — But far extra importantly, elementary learners is not going to have any Certified SOA Security Specialist Examcollection S90-20A cram idea about the beginning of our pretty individual state and just how our state arrived into obtaining. Is not the reality that lawmakers 1st realized in 1774 in Philadelphia to be a physique of delegates coming from twelve away from the 13 colonies one particular thing that each American have to know? How about the reality that the first Congress adopted the Declaration of Independence together with other extensive lasting actions and acknowledged precedents instituted a lot less Arcitura Education Brain Dumps SOA Security Lab than Certified SOA Security Specialist Examcollection S90-20A cram our Construction?

S90-20A Exam Bundle

S90-20A exam bundle
Vendor Arcitura Education
Certification Certified SOA Security Specialist
Exam S90-20A
Exam Name SOA Security Lab
Product S90-20A Exam Bundle
Discount 30%
Exam Price $97
Purchase

Arcitura Education S90-20A Exam Sample Questions

Question: 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?

  1. 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.
  2. 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.
  3. 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.
  4. 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

Question: 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?

  1. 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.
  2. 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.
  3. 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.
  4. 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

S90-20A Exam Bundle Contains

Arcitura Education S90-20A Exam Preparation Products Features S90-20A questions pdf S90-20A practice test
S90-20A Product Demo available available
S90-20A Exam Free Updates available available
Special Discount on S90-20A Preparation Material available available
Security and Privacy available available
S90-20A Practice Test Engine available available
S90-20A PDF Questions & Answers available available
100% Money Back on S90-20A VCE available available
24/7 Support available available
Price $69 $69
Add to Cart

Scheduling and Arranging

The subsequent established of responsibilities would relate to arranging and preparation, which would be the opportunity to organise tons of items, to empower a plan S90-20A Sheets or lesson to purchase spot. Possessing identified a selected individual’s needs, the teacher then needs to SOA Security Lab tactic the course or lesson, to be able to maintain the S90-20A exam cram scholars or learners entirely Arcitura Education Brain Dumps engaged for that complete size in the process or very similar, getting a variation of approaches and educating answers.

An infinite part of arranging S90-20A Sheets revolves about session and interaction, SOA Security Lab understanding who to call for within the training also, as an illustration an experienced speaker or associated. Also Certified SOA Security Specialist guaranteeing that any expected S90-20A exam cram resources is often discovered for your course or Arcitura Education lesson when predicted.

Just one extra put for matter to think about could be SOA Security Lab your situation within the method, which Arcitura Education S90-20A exam cram can quite effectively be the accountability of a distinct. On the other hand the trainer must check out using the important personal(s) to verify these kind of S90-20A exam cram lodging.

The following step will be to build or construct a SOA Security Lab session get Arcitura Education Brain Dumps ready and strategy of labor, which are actually unique and concise and would help the S90-20A Sheets learners understand their objective(s). On some events these could be offered because of the organisation the coach was operating Certified SOA Security Specialist with or for.

Instructing and Discovering

The genuine magic SOA Security Lab formula Examcollection S90-20A exam cram about making a session technique and approach of labor is implementation and earning absolutely sure the Arcitura Education aims are arrived at. It is actually also vital for every S90-20A Sheets and every exclusive currently being built-in just as much as is feasible, making certain that SOA Security Lab unquestionably all people has exactly the same chance to acknowledge the subject S90-20A PDF sufficiently. This has a tendency to be achieved from the instructor observing every single member around the class or instruction Arcitura Education system and galvanizing the participation of all.

To S90-20A PDF get the ability to SOA Security Lab teach flawlessly and with the college or university college students to Certified SOA Security Specialist find out, it truly is basically considerable to be aware of the Examcollection S90-20A exam cram enough regular of guidance that ought to be created obtainable to each and each scholar.

Within an exertion to make certain SOA Security Lab attention-grabbing and productive knowledge Arcitura Education the instructor might Examcollection S90-20A exam cram be essential to use a range of mastering techniques and lots of variation within their lesson implementation. The lecturers overall performance can only be deemed productive if S90-20A exam cram their college students find out the fabric correctly.

Continual Assessment

It SOA Security Lab is necessary to place into observe assessment in the course of the study course or lesson on a s90-20A exam cram ongoing Arcitura Education basis, during the start off for the conclusion. This might Certified SOA Security Specialist be acquired by inquiring concerns and hearing the responses equipped. So strategies turns into SOA Security Lab an exceptionally S90-20A Sheets valuable and part with the lecturers accomplishment arsenal.

By means of the conclude while using the schooling study course the teacher have to have recorded each individual person Examcollection S90-20A exam cram learner’s achievement which could be Arcitura Education in the type of an analysis or certificate.

The proficient SOA Security Lab and competent instructor is knowledgeable of that a large section of the productive S90-20A PDF instructing technique is acquiring an ongoing procedure of internal evaluation and verification course of action. This could be important to help make confident that instructing specs preserve S90-20A exam cram within a top-quality SOA Security Lab amount consistently.

Together with the Certified SOA Security Specialist originally small Arcitura Education posting using this assortment, you should definitely consult with component I and there are actually two subsequent factors Examcollection S90-20A exam cram III and IV.

Question: 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?

  1. 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 message-exchange, 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.
  2. 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.
  3. WS-Security-Policy transport binding assertions can be used to improve performance via transport-layer security Tkhe 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.
  4. 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

On the commencing believed, ending your LVN system speedier than standard could appear to be like an aged wives tale. But actually it can be very appreciably authentic given that it is probable to perform. Ending your LVN software package far more speedily genuinely only is made up of willpower with your portion to your all round health treatment Arcitura Education Certified SOA Security Specialist Examcollection S90-20A Study SOA Security Lab education and studying.

Additional in addition more adults now are building the decision to return to highschool to get a college diploma. Based on distinct statistical resources, it has been instructed that enrollment of grown ups age twenty-five and extra mature Certified SOA Security Specialist is predicted to outpace that of scholars age twenty-five and more youthful using the fast long-term. Just like most vital conclusions, standpoint university students ought to weigh the specialists and negatives and assess their instructional aims just right Arcitura Education Certified SOA Security Specialist Examcollection S90-20A Tests SOA Security Lab before going ahead.

What’s a math station? It really is actually a physical place accurately the place a student will execute a quick math work out at his / her current stage. It is going to require just a few Arcitura Education S90-20A exam & cram minutes, and when it is truly completed the scholar moves to SOA Security Lab a new station. Generally only Arcitura Education a number of to 5 stations are completed inside of a working day.

Let us give an illustration of how this will S90-20A Dump & Guide work. Lincoln is my 7 calendar Certified SOA Security Specialist year old. Now he did these five stations:Addition: He utilised base ten blocks to incorporate two SOA Security Lab issues with regrouping: 257 + sixty three and 594 + Arcitura Education 118

Subtraction: Complete revenue was accustomed Examcollection S90-20A exam to subtract two products inside of a catalog from his “money.”

Multiplication: He proven 5 X six by generating rows of miniature stickers.

Telling time: A clock face was stamped on index playing cards and SOA Security Lab he needed to attract Arcitura Education S90-20A the appropriate time composed that has a slip of paper.

Measuring: He Arcitura Education Brain Dumps calculated Certified SOA Security Specialist 3 kitchen area space utensils using a centimeter ruler.

Absolutely sure, he performs by making use of a conventional math curriculum. But math stations is surely Examcollection S90-20A exam an impressive and satisfying process of constructing SOA Security Lab math additional comprehensible. It demonstrates how

Most math curriculums coach a single concept in a time. This really is often fair. Arcitura Education About the other hand, though higher education students are understanding Examcollection S90-20A exam to subtract challenges which consist of 26 – eight, we do not want them for getting rusty to Certified SOA Security Specialist SOA Security Lab your a short while in the past acquired addition capabilities.

In just various exciting minutes each day, math stations can Arcitura Education S90-20A exam & cram complete the subsequent:Assessment beforehand uncovered strategies

Reveal Arcitura Education Brain Dumps the current math lesson using a variety of manipulatives

Set with each other the scholar for coming courses with speedy hands-on demonstrations

Drill individuals significant SOA Security Lab math specifics in an assortment of creative techniques

How Arcitura Education S90-20A do you make math stations on your college or university student? It truly is uncomplicated, nonetheless it takes a little the perfect Arcitura Education time to Certified SOA Security Specialist set up the really first time you do it.

Begin when using the 4 Examcollection S90-20A exam common functions: addition, SOA Security Lab subtraction, multiplication, division. What degree of each and every of these is your university scholar at? Obtain an action involved to each.

Other math abilities to take into consideration, dependant upon your students’ level, may Arcitura Education S90-20A well Arcitura Education consist of counting, measuring, fractions, decimals, percents, research, geometry.

Any time you give it SOA Security Lab some considered, almost each and every faculty student must have in the minimum 8 or nine Certified SOA Security Specialist distinctive math strategies at their present-day level. S90-20A Dump & Guide You should not in surplus of get it done. A few to five stations on a daily Arcitura Education basis is ample. Rotating the features retains them SOA Security Lab appealing.

Math stations is normally established up everywhere. From time to time we Arcitura Education S90-20A use a single position at the kitchen area region desk for every station along with the youthful children rotate near to the table. Other times the stations may perhaps quite perfectly be spread Arcitura Education near on several Certified SOA Security Specialist SOA Security Lab end Arcitura Education S90-20A exam & cram tables from the residing place. You may also deliver a scavenger hunt with somebody station in quite a few rooms inside the dwelling.

Question: 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?

  1. 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.
  2. 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.
  3. 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.
  4. 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

Checks, examinations, college receive the task performed simultaneously on top of that as family/friend challenges, sporting commitments in addition to other matters filling up your daily life. You cannot say it cannot get bothersome. You’ll be able to find that a great deal strain to accomplish S90-20A vce and test completely in class, as well as in some cases should you won’t practical experience force, it could even now be frustrating (for people today Certified SOA Security Specialist SOA Security Lab wishing to test and do very nicely afterward in any situation). Maybe you dread the varsity calendar year in advance, quite possibly S90-20A vce and test you happen to be falling driving in the extremely course or possibly you merely won’t be able to take care of the numerous do the job that will arrive your way. School will probably be absolutely one particular of most likely quite possibly the most demanding S90-20A Paper intervals Arcitura Education in Certified SOA Security Specialist SOA Security Lab your existence.

The HHR, these kinds of as SSR developed by Chevrolet one distinct twelve months appropriate prior to it, is usually a retro automobile supposed to evoke comparisons with vehicles of an unique technologies. Having styling cues from a 1949 Chevrolet/GMC Arcitura Education S90-20A Study Suburban the HHR, or Heritage Significant Roof, is predicated inside the all new Chevrolet Cobalt body. The PT Cruiser will likely be a retro automobile SOA Security Lab and it get its styling cues from panel cars about the equivalent interval, so the S90-20A answers PT while in the determine could Arcitura Education make the vehicle a panel truck cruiser. For further more comparison notes the Chrysler is predicated in Certified SOA Security Specialist excess of the ageing [and before lengthy being discontinued] Neon system.

The HHR, much like the PT Cruiser, S90-20A answers is actually a tall wagon with elevated seating that could SOA Security Lab fold all the way all the way down to allow for enough carting of large and lengthy products. In truth, together with the entrance passenger seat folded down, the HHR Examcollection S90-20A Online can certainly have an 8 foot phase ladder inside of its cabin. Arcitura Education Chevrolet added a great deal of bins, hooks, and cup holders on your HHR to make certain that the utilitarian character in the SOA Security Lab vehicle is just in its Arcitura Education S90-20A Study styling, instead of in its practicality. Certified SOA Security Specialist Fantastic element, with the rationale that retro must only be in would seem

With 4 passenger doorways together with a fifth utility door – a liftgate – the HHR is alleged to carry five passengers, Examcollection S90-20A Online but as motorized vehicles in the measurement go the 3 when during the yet again should be young Arcitura Education small children, SOA Security Lab normally the likely will certainly be cramped.

In distinction to the PT Cruiser which offers a couple of 4 cylinder engines, S90-20A answers two of which could be turbocharged, the HHR abilities just two normally aspirated engines: the two.2L Ecotec with 143 horsepower or perhaps the 2.4L Ecotec with 172 horses. Each Certified SOA Security Specialist engines are mated to your 5 tempo manual transmission, but clients Arcitura Education S90-20A Study can opt for only a SOA Security Lab 4 speed computerized need to they so want.

Sure, most of the other creature comforts of contemporary autos can even Arcitura Education be accessible with the many HHR; some is normal gadgets though some are mentioned as alternatives. Examcollection S90-20A Online Air conditioning, cd gamers, air baggage, electric powered electrical power seats/windows/doors/locks, and lots of some others. are presented in accordance with choice deals requested along with the product picked [there SOA Security Lab are three].

Regarded as a single of one of the most S90-20A Sheets effective abilities in the HHR is its advertising selling price. Now, Chevrolet’s Certified SOA Security Specialist basis MSRP is $15,990 and though GM’s certain employee pricing software has concluded there are specific to be Arcitura Education incentives offered to entice buyers, possibly in the region of Examcollection S90-20A Sheets reduce sum financing. Freeway gas mileage really should truly solution 30 miles towards the gallon, SOA Security Lab which occurs being equivalent to cars and trucks in its class.

Time will convey to how the HHR is obtained and because it is so new Examcollection S90-20A Online I have not experienced a chance to check travel one particular nonetheless. So, I really can not move judgment about the HHR in addition to point out I like its seems being and visualize that Certified SOA Security Specialist it Arcitura Education could absolutely be a S90-20A SOA Security Lab good competitor to the PT Cruiser in addition being a solution for all people searching at the Honda Element or Scion xB.

Question: 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?

  1. 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.
  2. 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.
  3. 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.
  4. 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

Question: 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?

  1. 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.
  2. 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.
  3. 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.
  4. 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