Home Notes Create Task Final Quiz1,2,3 Replit

Final MCQ scores and test corrections

# Quiz Grade
1 Finals-Quiz1 34/50
2 Finals-Quiz2 44/50
3 Finals-Quiz3 36/50
4 Finals-Quiz3 39/50
Link to Corrections(CLICK ME)
  1. Finals-Quiz1
  2. Finals-Quiz2
  3. Finals-Quiz3
  4. Finals-Quiz5

Finals Quiz1 Corrections

Q1 Screen Shot 2022-04-20 at 8 40 38 AM

  1. Techniques to store data sets change as the size of data sets increase. Larger data sets by their nature require more storage space.
  2. Programming statements least affects because the efficiency of a program is independent of the number of statements it contains.

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Q5 Screen Shot 2022-04-20 at 8 42 06 AM

  1. cookies created during the anonymous browsing session were deleted, no information exists in the browser to inform future visits to the same website. Thus, any shopping cart items will not be available for future purchase.
  2. This means that items that were in the shopping cart, will not be there because the anonymous borwsing sessino is being used while using the shopping cart item utility on a particular online store.

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Q14 considering using 7-bit binary sequences

  1. Adding an extra binary digit allows for two times as many items to be identified.
  2. When adding another digit it allows 2 times and not 10 more (think as a binary number).

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Q25 Screen Shot 2022-04-22 at 9 54 03 AM

  1. Creative Commons the author can stipulate what kind of modification is allowed by users.
  2. Creative Commons license is designed to increase the amount of content available to the public for free.

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Q28 Screen Shot 2022-04-20 at 8 45 49 AM

  1. Data compression: reduction in the number of bits needed to represent data.
  2. Advantages: Significant reduction of file size but at the cost of loss in the quality.
  3. Disadvantages: Quality of compressed image degrades with high ratio of compression. User can not get back original image after compression.

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Q39 Screen Shot 2022-04-20 at 8 48 38 AM

  1. If you did process X on processor 1 at the same time as doing process Y and then Z on processor 2, processor 1 would be done in 60 seconds and processor 2 would be done in 80 sections (50+30).
  2. The processor calculations and I did not know what it means for processors to run parallel.
  3. Parallel processing is a method in computing of running two or more processors (CPUs) to handle separate parts of an overall task

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Q41 Screen Shot 2022-04-20 at 8 53 42 AM

  1. I was running out of time, I will space out my time better on Thursday.
  2. Any line between two computers represents a way for them to communicate with each other, and a communication between two computers can go through other computers.

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Q42 Screen Shot 2022-04-20 at 8 55 44 AM

  1. Ran out of time.
  2. Would use paper to get the current value and then use that value that I have found to calculate the next value that is needed to find the answer

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Q43 Screen Shot 2022-04-20 at 9 01 53 AM

  1. Phishing attack: social engineering attack often used to steal user data, including login credentials and credit card numbers.
  2. Always related to an email.

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Q44 Screen Shot 2022-04-20 at 9 05 57 AM

  1. Phishing attack: social engineering attack often used to steal user data, including login credentials and credit card numbers.
  2. Ran out of time, got all the questions that I guessed wrong.
  3. D: It is probably because the email indication is the most fake among the answer choices.

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Q45 Screen Shot 2022-04-20 at 9 11 44 AM

  1. cost of a given product is not tracked by the described search engine.
  2. Find key words and look back to see if that information topic is included in the list that the data includes.

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Q46 Screen Shot 2022-04-20 at 9 13 09 AM

  1. Open protocol: one that is not owned by any particular company and not limited to a particular company’s products.
  2. Routing is dynamic and not specified before hand.
  3. Protocols used on the Internet enable devices from different manufacturers to communicate in a standard way.

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Q47 Screen Shot 2022-04-20 at 9 14 59 AM

  1. Ran out of time.
  2. Would get this right if not for the time.
  3. It would need more thought on the answer choices to get this right. Next time I will prove my time on these types of questions.

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Q48 ##Screen Shot 2022-04-20 at 9 17 20 AM

  1. Removing the connections between C and F and between F and H will prevent devices A and F from communicating.
  2. Also related to the question before - need to improve timing on answering these types of questions.

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Q49 Screen Shot 2022-04-20 at 9 18 23 AM

  1. The actions of the ISP will only affect how frequently visited pages are loaded into Web browsers. Pages not saved by the ISP are still accessed as they were before.

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Q50 Screen Shot 2022-04-20 at 9 19 28 AM

  1. Even a small loss of information is considered lossy. This is not a lossless transformation.
  2. if a negative of the original image is made, each RGB triplet value will be computed by subtracting the original value from 255. The original value can then be restored by subtracting the new value from 255. This process is lossless because the exact original can be restored.

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Finals-Quiz2 Corrections

2-Q5 Screen Shot 2022-04-22 at 9 56 53 AM

  1. simulation is run on a computer and is not likely to require input from individuals distributed around the world.
  2. It is fine if it is around the world as long as it includes participation from civilians.
  3. Citizen science is scientific research conducted in whole or part by distributed individuals, many of whom may not be scientists, who contribute relevant data to research using their own computing devices.
  4. The Correct project would benefit from using a citizen science model for gathering photographs of plants from amateur photographers around the world.

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Q19 Screen Shot 2022-04-22 at 9 59 48 AM

  1. When x is negative, y is assigned the value true and the value of y is displayed. When x is not negative, y is assigned the value false and the display statement is never executed.

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Q24 Screen Shot 2022-04-22 at 10 01 35 AM

  1. Redundancy on the Internet allows packets to be transmitted along multiple paths, but does not reduce the number of packets needed to transmit a particular message.
  2. If a particular device or connection on the Internet fails, subsequent data will be sent via a different route, if possible.

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Q35 Screen Shot 2022-04-22 at 10 02 59 AM

  1. Overflow errors occur when an arithmetic operation results in a value outside the range of numbers that can be represented by a fixed number of bits.

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Q40 Screen Shot 2022-04-22 at 10 03 44 AM

1.The work may be distributed to amateur or nonprofessional individuals, who are not likely to have the same accuracy as the professional researchers.

  1. Citizen science involves members of the general public participating in scientific research which allows the work to be completed in less time.

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2-Q41 Screen Shot 2022-04-22 at 10 04 23 AM

  1. One way to determine the method of payment that was used in the greatest number of transactions during the 7-day period is to sort the data by the method of payment as described.
  2. Instead of adding the number of items purchased for each type of payment, a count of each payment type needs to be computed.
  3. If the counts are stored in a new field, then the counts can be sorted to find the method of payment used in the greatest number of transactions.
  4. Correct: By searching the data to find all transactions that occurred on the given date, and then adding the number of items purchased in each of those transactions, the total number of items purchased on a given date can be determined.

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Finals Quiz3 Corrections

Q2 Screen Shot 2022-04-28 at 10 01 52 AM

  1. An undecidable problem is one for which no algorithm can be constructed that is always capable of providing a correct yes-or-no answer.
  2. there is no algorithmic solution that could solve all instances of the problem.

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Q6 Screen Shot 2022-04-28 at 10 03 58 AM

  1. the wrong one starts at 0.
  2. After 20 is displayed, the algorithm terminates.

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Q7 Screen Shot 2022-04-28 at 10 05 51 AM

  1. The procedure initially sets result to 1 and j to 2. In the REPEAT UNTIL loop, result is first assigned the sum of result and j, or 1 + 2. The value of j is then increased to 3.
  2. In each subsequent iteration of the loop, result is increased by each successive value of j (3, 4, 5, etc.) until j exceeds n. Therefore, the procedure returns the sum of the integers from 1 to n.

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Q8 Screen Shot 2022-04-28 at 10 09 00 AM

  1. a student could be selected twice so it is not that option.

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Q17 Screen Shot 2022-04-28 at 10 13 10 AM

  1. The procedure returns the first number it encounters that is less than the first number in the list.

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Q19 Screen Shot 2022-04-28 at 10 14 04 AM

  1. the lowest assignment one can be found by calculating the difference between the sum of the scores before the lowest score was dropped and the sum of the scores after the lowest score was dropped.
  2. the right one needs to know the individual assignment scores.

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Q20 Screen Shot 2022-04-28 at 10 16 30 AM

  1. failed to add the 1 in accordance to the 12 that goes before it.

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Q30 Screen Shot 2022-04-28 at 10 17 49 AM

  1. The Internet is the global system of interconnected computer networks that uses protocols to connect devices worldwide.
  2. The World Wide Web is an information system (of pages, programs, and files) that is accessible over the Internet.

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Q32 Screen Shot 2022-04-28 at 10 19 13 AM

  1. think about the question in terms of 2^4 and find which values are able to be made by those 4 bits.

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Q34 Screen Shot 2022-04-28 at 10 20 35 AM

  1. misunderstood the question. Need to re-evaluate and interpret the question as a response that does not runtime fast and needs the heuristic approach to save it.

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Q42 Screen Shot 2022-04-28 at 10 22 42 AM

  1. 6 bits will only allow for up to 64 sequences because 26=64.
  2. Using 7 bits will allow for up to 128 sequences because 27=128. Therefore, a minimum of 7 bits are needed.

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Q46 Screen Shot 2022-04-28 at 10 26 54 AM

  1. Symmetric encryption is a type of encryption where only one key (a secret key) is used to both encrypt and decrypt electronic information.
  2. example of symmetric encryption because the secret key is used for both encryption and decryption of messages.

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Q48 Screen Shot 2022-04-28 at 10 27 19 AM

  1. ran out of time.
  2. o pair of characters appears in the string more than once.

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Q50 Screen Shot 2022-04-28 at 10 28 56 AM

  1. ran out of time.
  2. The variable second, while initially assigned the value 200, is later assigned the value of temp, which is 100.

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Q6 Screen Shot 2022-05-06 at 11 37 43 AM

  1. it only works when the maximum value is greater than or equal to one.

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Q13 Screen Shot 2022-05-06 at 11 48 16 AM

  1. that way, the average would only be calculated once. <\b>
  2. since 7 is only for interchanging numbers.

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Q16 Screen Shot 2022-05-06 at 11 51 25 AM

  1. did not realize that the person is actually switched

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Q20 Screen Shot 2022-05-06 at 11 54 53 AM

  1. The REPEAT UNTIL statement subtracts 2 from the parameter number until the condition number ≤ 0 is true. After this REPEAT loop ends, the value of number is either 0 (if the original number was even) or –1 (if the original number was odd).

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Q24 Screen Shot 2022-05-06 at 11 57 48 AM

  1. pay attention to more of the code segaments.

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Q25 Screen Shot 2022-05-06 at 11 59 44 AM

  1. f timer is greater than 60, bonus is assigned 1500 in the first IF block. If timer is between 30 and 60, inclusive, bonus is assigned 1000 in the second IF block. If timer is less than 30, bonus is assigned 500 in the third IF block. The correct number of bonus points is assigned to bonus for all possible values of timer.

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Q26 Screen Shot 2022-05-06 at 12 00 54 PM

  1. The last line in this code segment sets maxPS to 50 regardless of the value of time<\b>
  2. This code segment uses the IF statement to set maxPS to 30 when time > 120 and uses the ELSE statement to set maxPS to 50 otherwise.

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Q27 Screen Shot 2022-05-06 at 12 02 33 PM

  1. A simulation that shows how packets move between clients and servers can show the effects of temporarily unavailable network connections.

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Q28 Screen Shot 2022-05-06 at 12 03 57 PM

  1. If the song was saved using a lossless compression technique, there should be no change in sound quality.<\b>
  2. correct. The representation of sound as data involves the computational manipulation of information. For one copy of a song to have a lower sound quality than another copy, a lower ratio of bits per second must have been used.

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Q33 Screen Shot 2022-05-06 at 12 04 59 PM

  1. incorrect. The user’s browser makes a request for the file, and the file is broken into packets by the server for transmission. The user’s browser does not request each packet in order.<\b>
  2. correct. Digital data on the Internet is sent by breaking data into blocks of bits called packets. The packets are reassembled by the user’s computer.

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Q34 Screen Shot 2022-05-06 at 12 06 41 PM

  1. The Internet was not designed to be completely secure. Encryption is not required for communications.<\b>
  2. The Internet was designed to be scalable, using open protocols to easily connect additional computing devices to the network.

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