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Which of the following types of attack always affect the availability of a service?
A. Exception generation attack
B. SQL injection attack
C. XPath injection attack
D. None of the above
The use of XML schemas for data validation helps avoid several types of data-centric threats.
The use of session keys and symmetric cryptography results in:
A. Increased performance degradation
B. Increased reliability degradation
C. Reduced message sizes
D. None of the above
An alternative to using a ___________ is to use a __________.
A. Public key, private key
B. Digital signature, symmetric key
C. Public key, key agreement security session
D. Digital signature, asymmetric key
Service A’s logic has been implemented using managed code. An attacker sends an XML bomb to Service A . As a result, Service A’s memory consumption started increasing at an alarming rate and then decreased back to normal. The service was not affected by this attack and quickly recovered. Which of the following attacks were potentially avoided?
A. XML parser attack
B. Buffer overrun attack
C. Insufficient authorization attack
D. Denial of service
Answer: A, D
When designing XML schemas to avoid data-centric threats, which of the following are valid considerations?
A. The maxOccurs attribute needs to be specified using a restrictive value.
B. The element needs to be avoided.
C. The element can be used to create more restrictive user-defined simple types.
D. All of the above.
Answer: D, B
___________ is an industry standard that describes mechanisms for issuing, validating, renewing and cancelling security tokens.