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[keatane]

Bug fixes - DC Application

The following message relates to some bugs or inaccurate terms in the questions applications, focusing on the part about Distributed Computing (DC).

Question: After network partition, what hapens if the two partitions went both on and have the same number?
typo "happens"; "have the same number", about what, are you probably talking about Raft?

Question: In the context of distributed systems, what trade-off is mentioned in the text?
what text?
Question: What happens when an Propser fails in accept phase (case seen in lesson)?
typo "Proposer"

Question: Which of these isn't something to take into account for choosing the number of znodes? Performance (of r/w), Costs, Tolerable failures (avaibility)
I see a probable inconsistency between question and answers

Question: If lam = 0.9 i have
I've done this today, so I remember, but tomorrow I won't :), specify the context, please

Question: If you have CP you have:
Please, specify CP of CAP, in case in the future will be something called similar

Question: What is the key inspiration behind the design of Apache Zookeeper?

1. The implementation of the NFS filesystem
2. The need for order and sequencing in data processing
3. The coordination of distributed applications
   Insert your answer (1, 2, or 3, 0 to leave): 1
   Wrong answer. The correct one is: 3.
   I thought was 1, can I request a double check, please?

Question: What is the condition for the queue to be in equilibrium in the M/M/1 model? 1. λ > μ
My congratulations to get lamda and mu printed correctly in the prompt

Question: You're doing great :O
You too

Question: Avg length of the queue is? 1. 1/(1-lam)
I've just congratulated and then this question pop up u.u

Question: What happens when an Propser fails in prepare phase (case seen in lesson)?
typo as before

Question: What are the three components of the CAP theorem, and what does each represent?
I've seen this question already three times, in different sauces, I leave you decide if remove one of these from the pool

Question: What is indipendente-initiated externally storing log compation?
typo "indipendente"

[keatane]

Bug fixes - FSTT Application

The following message relates to some bugs or inaccurate terms in the questions applications, focusing on the part about Function and Security Testing (FSTT).

Question: ChromeDriver is-a ChromiumDriver is-a RemoteWebDriver: selectable with ??("webdriver.chrome.driver", )

1. System.setProperty
2. WebDriver = new newChromDriver()
3. driver.get()
   Insert your answer (1, 2, or 3, 0 to leave):

--> Question formally correct?

Question: What are "close the current window, quitting the browser if it was the last" and "close the driver and all its windows"?

1. Selenium's quit and close
2. close and quit
3. none

--> answers 1 and 2 can be misunderstood

Question: How to select b2 with XPath?

1. /html/body/div[1]/input[2]
2. /html/body/div[2]
3. //div[2]/input[2]

--> what is b2?

Question: Maven's, config is based on ??, an XML file describing dependencies and libraries, automatically downloading them from remote repo's if not present locally

1. Gradle
2. Project Object Model
3. Document Object Model
   Insert your answer (1, 2, or 3, 0 to leave): 2

Wrong answer. The correct one is: 3.

--> It is not the 2nd? Should be POM, isn't it?

Question: To measure the ?? (how much AUT is tested by testsuite) we need to find a ?? (executed / total, e.g LOCs)

1. coverage, unit
2. percentage, indicator
3. percentage, indicator
   Insert your answer (1, 2, or 3, 0 to leave): 2

Wrong answer. The correct one is: 1.

--> To be reviewed.

Question: ?? allows multiple ways of checking for UIelements using assertions (hard) and verification (soft: the execution continues if fails)

1. Selenese
2. Selesium
3. Selenium language
   Insert your answer (1, 2, or 3, 0 to leave): 3

Wrong answer. The correct one is: 1.

--> Maybe I lost something, I don't remember this. To be reviewed.

Question: Gherkin is a ?? ?? language with # comments: a Feature keyword provides high-level description of feature and to group related scenarios

1. line-oriented, businnes-readable
2. We can have multiple Scenario under a Feature
3. both true sentences
   Insert your answer (1, 2, or 3, 0 to leave): 1

Wrong answer. The correct one is: 3.

--> To be reviewed.

Question: Docker key features are: containerization, portability, efficiency, consistency, scalability, resource optimization

1. Yes, all
2. No, only first three, other are benefits
3. No, nothing
   Insert your answer (1, 2, or 3, 0 to leave):

--> subdle

Question: Given, When, Then, And, Or, But, Background, Parameters (@regression, @endtoend, ...) are ?? keywords

1. Gherkin
2. Selenium
3. Sium
   Insert your answer (1, 2, or 3, 0 to leave):

--> :)

[keatane]

Bug fixes - DECS.txt

Bad-formatted questions

Question: In Arbitrum, what happens if a validator loses the bisection game? Their stake is partially transferred to the winner and the rest is burned or given to a verifier

1. Their transactions are invalidated
2. They are removed from the network permanently
3. 1
   Insert your answer (1, 2, or 3, 0 to leave):

Question: What is one key difference between Optimistic Rollups and Zero-Knowledge Rollups (L2 Panorama)? Zero-Knowledge Rollups rely on optimistic assumptions, while Optimistic Rollups use cryptographic proofs

1. Optimistic Rollups rely on challenges, while Zero-Knowledge Rollups like zk-SNARK use cryptographic proofs for correctness, being more computationally intensive
2. Zero-Knowledge Rollups depend on Merkle trees, while Optimistic Rollups don’t
3. 2
   Insert your answer (1, 2, or 3, 0 to leave):

Question: Is the order of Ethereum stack right?: the EVM at its core, Ethereum nodes for blockchain state and consensus, smart contracts, client APIs for developer interaction, and standard web or mobile end-user applications

1. yes
2. no, 2 has to be exchanged with 3
3. no, 3 has to be exchanged with 3
   Insert your answer (1, 2, or 3, 0 to leave):

Wrong questions

Question: ? tokens enable multiple token types within a single contract, reducing blockchain space and gas costs, supporting batch transfers for efficient multi-token transactions, and allowing atomic swaps for trustless exchanges—features that make it ideal for applications like gaming

1. ERC-1155
2. ERC-721
3. ERC-20
   Insert your answer (1, 2, or 3, 0 to leave): 1

Wrong answer. The correct one is: 2