Free Arcitura Education S90.18 Actual Exam Questions
The questions for this exam were last updated on January 7, 2026
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Question No. 1
Service A hashes a message, resulting in message digest X. Service A encrypts message digest X with
its private key, resulting in cipher text X1. Service A sends the message and X1 to Service B. Service B
hashes the message, resulting in message digest Y. Service B decrypts X1 with Service A's public key,
recovering message digest X1. Service B compares X and Y and finds them not to be equal. This
proves that;
its private key, resulting in cipher text X1. Service A sends the message and X1 to Service B. Service B
hashes the message, resulting in message digest Y. Service B decrypts X1 with Service A's public key,
recovering message digest X1. Service B compares X and Y and finds them not to be equal. This
proves that;
Select one option, then reveal solution.
Question No. 2
The application of the __________ pattern can eliminate the need for__________. However, the
application of this pattern can also introduce increased dependency on __________ that can result in
a single point of failure for multiple services.
application of this pattern can also introduce increased dependency on __________ that can result in
a single point of failure for multiple services.
Select one option, then reveal solution.
Question No. 3
Security specialists at an organization require that messages exchanged between two services are
kept private. There is an added requirement to check if the messages were tampered with. The
application of which of the following patterns fulfills these requirements?
kept private. There is an added requirement to check if the messages were tampered with. The
application of which of the following patterns fulfills these requirements?
Select all that apply, then reveal solution.
Question No. 4
A service that was previously using a shared identity store is now given its own dedicated identity
store instead. What are the likely impacts (positive or negative) that will result from this change?
store instead. What are the likely impacts (positive or negative) that will result from this change?
Select all that apply, then reveal solution.
Question No. 5
The messages exchanged between two services are kept confidential by using symmetric encryption.
The security specialist is quite strict about making sure that no attacker is able to intercept and
decipher messages sent between these two services. As a result, periodic audits are conducted in
order to ensure that shared keys are always kept confidential. A single shared key has been in use for
quite some time now. The security specialist was confident that all keys were well guarded, but just
recently their security was compromised. How is this possible given that the shared key was never
lost?
The security specialist is quite strict about making sure that no attacker is able to intercept and
decipher messages sent between these two services. As a result, periodic audits are conducted in
order to ensure that shared keys are always kept confidential. A single shared key has been in use for
quite some time now. The security specialist was confident that all keys were well guarded, but just
recently their security was compromised. How is this possible given that the shared key was never
lost?
Select one option, then reveal solution.
Question No. 6
Security policies that extend the technical service contract must be standardized within a given
service inventory. This statement is in accordance with which service-orientation principle?
service inventory. This statement is in accordance with which service-orientation principle?
Select one option, then reveal solution.
Question No. 7
Which of the following approaches represents a valid means of utilizing generic security logic?
Select one option, then reveal solution.
Question No. 8
The communication between Service A and Service B needs to be kept private. A security specialist is
planning to implement secret key cryptography in order to encrypt the messages. Which of the
following approaches addresses this requirement?
planning to implement secret key cryptography in order to encrypt the messages. Which of the
following approaches addresses this requirement?
Select one option, then reveal solution.
Question No. 9
SAML can be used for the application of the Brokered Authentication pattern.
Select one option, then reveal solution.
Question No. 10
The application of the Service Autonomy principle is always negatively affected when applying the
Data Confidentiality pattern together with the Data Origin Authentication pattern.
Data Confidentiality pattern together with the Data Origin Authentication pattern.
Select one option, then reveal solution.
Question No. 11
The application of the Data Origin Authentication pattern only provides message integrity.
Select one option, then reveal solution.
Question No. 12
The use of XML-Encryption supports the application of the Service Abstraction principle because the
actual message remains hidden from the attacker.
actual message remains hidden from the attacker.
Select one option, then reveal solution.
Question No. 13
The Data Origin Authentication pattern is applied to services throughout a service inventory. As a
result, if malicious service intermediaries change data within messages exchanged by these services,
such changes will be detected.
result, if malicious service intermediaries change data within messages exchanged by these services,
such changes will be detected.
Select one option, then reveal solution.
Question No. 14
XML canonicalization is the process of standardizing the syntax of XML documents that are to be
digitally signed. This way, when the digital signature is verified, it reproduces the same message
digest for assessing message integrity.
digitally signed. This way, when the digital signature is verified, it reproduces the same message
digest for assessing message integrity.
Select one option, then reveal solution.
Question No. 15
Service A is a utility service that has been designed to receive and send non-confidential messages.
Service A provides access to a legacy application. Since the launch of Service A . the overall usage
volumes have increased beyond expectations. Upon a review of the access logs, it is discovered that
most of the requests came from unauthorized service consumers. The application of the Direct
Authentication and Data Confidentiality patterns will prevent this from happening in the future.
Service A provides access to a legacy application. Since the launch of Service A . the overall usage
volumes have increased beyond expectations. Upon a review of the access logs, it is discovered that
most of the requests came from unauthorized service consumers. The application of the Direct
Authentication and Data Confidentiality patterns will prevent this from happening in the future.
Select one option, then reveal solution.