Fill in the blank: If a transaction Ti may never make progress, then the transaction is said to be ____________
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Lock based protocols:
Fill in the blank:
If a transaction Ti may never make progress, then the transaction is said to be ____________
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- Need below multiple questions correct answer only no need explanation: For each of the following situations in Questions 1 through 4, state whether the data stored is: "in scope" for PCI compliance "out of scope" for PCI compliance not permitted Question 1 Merchant stores customer PAN encrypted with key known only to the merchant. in scope out of scope not permitted Question 2 Merchant stores salted hash of customer PAN. in scope out of scope not permitted Question 3 Merchant stores token generated as random 16-digit number. in scope out of scope not permitted Question 4 Merchant stores customer CVV2 encrypted with key known only to the merchant. in scope out of scope not permitted Question 5 Merchant stores token generated using encryption key known only to the merchant. in scope out of scope not permittedDomain Name system (DNS) resolvers use paxos and invalidation messages to maintain the consistency of cached records. True or False?A web client must first utilize native authentication and authorisation services in order to access protected resources on a web server. Do stacked procedures provide any additional benefits? To back up your claims, you should provide particular examples.
- Both describe what a brute force attack is and why admin/root accounts are susceptible to brute force attacks?If I have TDE enabled on a database and some form of transmission encryption such as IPSEC a malicious entity cannot read any of the database contents even if they have access to the physical server. True False ExplainExplain the risks involved with each authentication method and offer a solution for the following scenario. Bob checks a hashed password against a list of other hashed passwords in a database. Bob checks a password's hash against a list of double-hashed passwords in a database.
- To conduct a business transaction over the Internet, we must use public key and private key encryption to enable secure access from our browser to a Web server that holds transaction information.Which of the following statements about Anonymity is CORRECT: A. Bitcoin is anonymous as it doesn't use any name at all. B. In the Bitcoin network, you can only create a limited number of addresses. C. Unlinkability means that if a user interacts with the system repeatedly, these different interactions should not be able to be tied to each other from the point of view of the adversary. D. The anonymity set of your transaction is the set of transactions without real identities.What are the downsides of symmetric encryption's key management?
- Step-by-step instructions for implementing native authentication and authorization services when a web client seeks access to restricted resources on a web server. Please provide the top two arguments in favor of using layered protocols. Justify your claims using appropriate illustrations.what would you use as the way to securely store user passwords user logins for an online store you’re running – hashed values or encryption? What do you think this is the proper balance of performance vs security? Which would be the worst method to use for storing a password regardless of performance considerations?Explain why each of the following protocols should or should not be used:• Multiversion timestamp ordering • Multiversion two-phase locking