To determine which functional dependencies in the set are redundant, we can apply the Armstrong's axioms to check if any of the functional dependencies can be inferred from the others.
The three axioms of Armstrong's are:
1. Reflexivity: if Y is a subset of X, then X → Y
2. Augmentation: if X → Y, then XZ → YZ
3. Transitivity: if X → Y and Y → Z, then X → Z
Using these axioms, we can derive additional functional dependencies that are not explicitly given in the set.
Starting with the given set of functional dependencies:
```
cf→b
b→c
fb→e
cbe→f
e→ag
fa→b
bg→fe
ba→cg
```
We can apply augmentation to the first dependency to get `cfb → b` and then apply transitivity to the second dependency to get `cfb → c`.
Similarly, we can apply transitivity to the third dependency to get `cfb → e` and then apply transitivity to the fourth dependency to get `cfb → f`.
This gives us a new set of functional dependencies:
```
cf→b
b→c
fb→e
cbe→f
e→ag
fa→b
bg→fe
ba→cg
cfb→b
cfb→c
cfb→e
cfb→f
```
Now, we can check each of the answer choices to see if they can be inferred from this new set of functional dependencies:
a) `E→G`: This cannot be inferred from the given set of functional dependencies or the new set that we derived. Therefore, this is not redundant.
b) `FB→E`: This can be inferred from the given set of functional dependencies by applying transitivity to the third and eighth dependencies: `fb→e` and `bg→fe`, which gives us `fbg→e`. Since `fbg` is a superset of `fb`, we can apply reflexivity to get `fb→e`. Therefore, this is not redundant.
c) `BA→G`: This can be inferred from the given set of functional dependencies by applying transitivity to the fifth and last dependencies: `e→ag` and `ba→cg`, which gives us `ba→g`. Therefore, this is redundant.
d) `BE→F`: This cannot be inferred from the given set of functional dependencies or the new set that we derived. Therefore, this is not redundant.
Therefore, the answer is (c) `BA→G` is the redundant functional dependency.
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You want to be super private with your email. You'd like to be able to download your email to a single device, then remove it from your email server. What email protocol can you use to do that?
Since the person want to be super private with your email, the email protocol can you use to do that is POP 3.
What is POP3 about ?POP3 is known to be a tool that gives one room to be able to download email to a single device, which a person want to use if they want to add privacy to their emails.
Therefore, Since the person want to be super private with your email, the email protocol can you use to do that is POP 3.
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A user has reported that their workstation is running slowly. You perform a reboot of their workstation and receive a S.M.A.R.T. error during the boot-up process. Which of the following actions should you perform FIRST
The actions that one need todo or perform FIRST is to backup the hard drive.
What causes a SMART error?A composition of bad blocks can be a tool that can lead to a SMART error, or when the drive of the system's temperature is known to have gotten too high as a result of poor ventilation or other environmental factors.
Note that The actions that one need todo or perform FIRST is to backup the hard drive. because by doing so, one can be able to retrieve information back.
Hence the answer is correct.
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Your computer's sound stops working after updating the driver. What should you do to recover from this problem with the least amount of administrative effort
The thing to do in order to recover from this problem with the least amount of administrative effort is to Reboot the computer into Safe Mode and use Device Manager to roll back the driver.
What is a Device Driver?This refers to the computer program that is in charge of a particular type of device that controls a computer part.
Hence, we can see that based on the fact that the audio in the computer beings to malfunction after updating the device drivers, the best step to take is to Reboot the computer into Safe Mode and use Device Manager to roll back the driver.
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During the functional testing phase of application development, an application tests for vulnerabilities against the running code. What type of code testing is this?
Dynamic analysis is the type of code testing that the above case is.
What is Dynamic analysis?Dynamic analysis is known to be a form of testing and examination of a program by using or executing data in a kind of real-time.
Note that the objective is to be able to see errors in a program while it is said to be running and as such, Dynamic analysis is the type of code testing that the above case is.
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Frankie used the ps command to find the process id of an application that he needs to stop. What command-line tool should he use to stop the application based on its process id?
In the case above, the command-line tool should he use to stop the application based on its process id is e option
What is the use of ps command?
The ps command is known to be one that helps enables a person to be able to look at the status of any kind of active processes on a system, and also that of display technical information in regards to the processes.
Note that In the case above, the command-line tool should he use to stop the application based on its process id is e option
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Program ________ graphically present the detailed sequence of steps needed to solve a programming problem.
i. flowcharts
ii.pseudocode
iii. loops
iv. modules
Software program flowcharts graphically present the detailed sequence of steps needed to solve a programming problem.
What is a flowchart?A flowchart is also referred to as flow diagram and it can be defined as a graphical representation of an algorithm for a work process or workflow.
This ultimately implies that, a flowchart make use of the following standard symbols to graphically represent the sequential steps that are needed to solve a programming problem and are typically associated with a system, work process or workflow i.e from the beginning (start) to the end (finish):
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Program flowchart graphically present the detailed sequence of steps needed to solve a programming problem.
What is Program flowchart?
The program flowchart can be regarded as the data flow which help to display the data flow while writing a program or algorithm.
This chart user to explain the process quickly when dealing or collaborating with others, hence, Program flowchart graphically present the detailed sequence of steps needed to solve a programming problem.
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What features should you present when demonstrating 2023 murano’s confident cornering?.
Answer:
features of muranos confident cornering 2022:-
-Intelligent All-Wheel Drive
-4-wheel independent suspension
-Electrically driven hydraulic power steering
Based on the automobile analysis, the features one should present when demonstrating 2023 Murano's confident cornering include "4-wheel independent suspension."
What is Cornering in a vehicle?Cornering is a term that describes the extent of the force wielded on the vehicle's center of gravity.
Other features one should present when demonstrating 2023 Murano's confident cornering
Intelligent All-Wheel DriveElectrically driven hydraulic power steering2023 Murano is a modern vehicle produced by Nissan Manufacturer. It comes with the latest design, swift navigation component, and easy-to-handle features.
For 2023, the Murano is seen to be having a lot of overdue makeovers and it is one that includes a feature of improvements such as revamp of the outside and interior.
Hence, in this case, it is concluded that the 2023 Murano is one of the latest vehicles to possess.
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To set up scenarios, you need to first use ______ to set up a list, then ______ to set up the reference cell. Last you need to use ______ to set up the cells that display the output results from the scenario.
To set up scenarios, you need to first use Goal seek to set up a list, then data table to set up the reference cell. Last you need to use VLOOKUP to set up the cells that display the output results from the scenario.
What is a Goal Seek in Excel?Microsoft Excel is known to have a goal seeking tool that is said to be built-in and it is one that gives room for the user to know the desired input value for any kind of formula if the output value is said to be already known.
Hence, To set up scenarios, you need to first use Goal seek to set up a list, then data table to set up the reference cell. Last you need to use VLOOKUP to set up the cells that display the output results from the scenario.
See full question below
To set up scenarios, you need to first use to set up a list, then to set up the reference cell. Last you need to use to set up the cells that display the output results from the scenario. CHOOSE; VLOOKUP; data table Goal seek; data table; VLOOKUP Data validation; VLOOKUP; CHOOSE Data table; VLOOKUP;
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If you're connected to a switch and your NIC is in promiscuous mode, what traffic would you be able to capture
If you're connected to a switch and your NIC is in promiscuous mode, the traffic would you be able to capture would be broadcast traffic.
What is Broadcast traffic?
Broadcast traffic is used to send packets to all hosts on the network using the network's broadcast address. With a broadcast, the packet contains a destination IP address that only has numbers one (1s) in the host portion. This means that all hosts on that local network (broadcast domain) will receive and verify the packet. Many network protocols, such as DHCP, use broadcasts. When a host receives a packet sent to the network's broadcast address, the host processes the packet as a packet addressed to its unicast address.
Also, there are two types of broadcasts: directed broadcast and limited broadcast.
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Write a recursive function called digit_count() that takes a positive integer as a parameter and returns the number of digits in the integer. Hint: The number of digits increases by 1 whenever the input number is divided by 10.
Ex: If the input is:
345
the function digit_count() returns and the program outputs:
3
Using the computational knowledge in python it is possible to write a code that Write a recursive function called digit_count()
What is a function in Python?In Python, a function is a sequence of commands that performs some task and that has a name. Its main purpose is to help us organize programs into chunks that correspond to how we envision a solution to the problem.
Writting the code in python:def countDigits(n):
if n< 10:
return 1
else:
return 1 + countDigits(n / 10)
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True or false: A many-to-many relationship between classes A and B (where the maximum multiplicity on both sides of the association is *) is implemented by posting foreign keys in both A and B.
A many-to-many relationship between classes A and B (where the maximum multiplicity on both sides of the association is *) is implemented by posting foreign keys in both A and B is a false statement.
What is a many-to-many relationship?A many-to-many relationship is known to be one that exist if one or more items that is found in one table can have an association to one or more items in another given table.
Hence, A many-to-many relationship between classes A and B (where the maximum multiplicity on both sides of the association is *) is implemented by posting foreign keys in both A and B is a false statement.
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You would like to see only the last 15 lines of /home/user/log file on your linux machine. Which command line interface (cli) command would you use?
In Linux computer systems, "tail -n 15 /home/user/logfile" is a command line interface (cli) command that should be used to view only the last 15 lines of /home/user/log file.
What is a Linux command?A Linux command can be defined as a software program that is designed and developed to run on the command line, in order to enable an administrator (end user) of a Linux network perform both basic and advanced tasks by entering a line of text.
In Linux computer systems or machines, a command line interface (cli) command that should be used by an administrator (end user) to view only the last 15 lines of /home/user/log file is "tail -n 15 /home/user/logfile."
In conclusion, the above command would reveal only the last 15 lines of /home/user/log file on a Linux computer system.
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Multiple Select
It is important to be polite to people when you are online because
it reflects your level of professionalism
it helps build a good reputation
you can be fined if you are impolite
it says a lot about your character
you must avoid getting into trouble
Select 3 options.
It is important to be polite to people when you are online because
it reflects your level of professionalism.it helps build a good reputation.it says a lot about your character.What is online presence?Online presence is said to be the numbers or all activity and content that an individual or a business entails under their name in regards to the internet.
Note that It is important to be polite to people when you are online because
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What is a barrier to entry preventing quantum computing hardware from becoming more widely available?.
The option that is barrier to entry preventing quantum computing hardware from becoming more widely available is that They cost companies millions of dollars to manufacture.
What is quantum computing?Quantum computing is known to be an aspect of computing based on creating computer technology as a result of or on the principles of quantum theory.
Note that The option that is barrier to entry preventing quantum computing hardware from becoming more widely available is that They cost companies millions of dollars to manufacture.
See options below
a) They are limited to solving only intractable problems.
b) They cost companies millions of dollars to manufacture.
c) They need to be kept at a constant temperature of 0°C.
d) They are not expected to save data for more than a year.
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Salesforce organizes your data into: A. Objects and records, like tabs and rows on a spreadsheet. B. Objects and fields, like columns on a spreadsheet. C. Fields and records, like different databases. D. Objects and spreadsheets, like columns in a database.
Salesforce organizes your data into option A. Objects and records, like tabs and rows on a spreadsheet.
How does Salesforce organize data?Salesforce is known to be a tool that helps one to put together their your into objects and records and it is said to have standard objects that has been set up and ready for use.
Hence, Salesforce organizes your data into option A. Objects and records, like tabs and rows on a spreadsheet.
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A text file has 456789 letters. If the text file is text wrapped to 80 characters per line (a line folds to the next after 80 columns of characters from the left), the number of lines with letters in the text file would be: . How many letters are in the last line
Answer:
5710 lines
Explanation:
What type of digital marketing is exemplified by a company rewriting the code for its website to contain more keywords, or by finding creative ways to place its URL in multiple spots on the web
A type of digital marketing that is exemplified by a company rewriting the code for its website to contain more keywords, or by finding creative ways to place its URL in multiple spots on the web is referred to as social media marketing.
What is digital marketing?Digital marketing can be defined as a type of marketing technique which typically involves the process of developing promotional techniques and sales strategies through the use of multimedia resources and electronic devices, so as to enhance the sales of goods and services that meet the needs of the customers or end users.
In this context, we can infer and logically deduce that social media marketing refers to a type of digital marketing that is exemplified by a company rewriting the code for its website to contain more keywords, or by finding creative ways to place its URL in multiple spots on the web.
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______ control is not displayed at the runtime but its event is fired automatically at the specific time interval .
Timer Interval Property is a control is not displayed at the runtime but its event is fired automatically at the specific time interval .
What is a timer tool?TimerTools is known to be one that is said to be aimed to aid a person to be able to manage their Countdowns and stopwatches.
What is a timer interval?The INTERVAL-TIMER function is known to be that which returns the number of seconds and it begins from an arbitrary point in regards to time.
Note that in regards to the above, Timer Interval Property is a control is not displayed at the runtime but its event is fired automatically at the specific time interval .
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Basil was reading about a new attack that forces the system to abandon a higher cryptographic security mode of operation and instead fall back to an older and less secure mode. What type of attack is this
Since Basil was reading about a new attack that forces the system to abandon a higher cryptographic security mode of operation and the kind of attack is known to be Downgrade attack.
What is downgrade security attack?A downgrade attack is known to be a kind of of cyber attack that is made up of the fact that an attacker is known to often forces a network channel to make a switch to a kind of an unprotected or one that is said to be less secure data transmission standard.
Note also that the Downgrading of a given protocol version is said to be a key element of a type of a man-in-the-middle attacks, and it is known to be one that is often used to take or hijack encrypted traffic.
Hence, Since Basil was reading about a new attack that forces the system to abandon a higher cryptographic security mode of operation and the kind of attack is known to be Downgrade attack
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In order for css to work with HTML5 elements, you need to use a javascript HTML5 shiv or shim. What is this placed in?
For CSS to work with HTML5 elements, the command that is placed in the above CSS is given in the image attached.
The Tags (Elements) are:
<article> - this stands for an independent piece of issue of a document, such as a blog entry and others.<aside > - this stands for a piece of writing or a content that is said to be in a little way or only slightly linked to the rest of the page.Does HTML5 use JavaScript?HTML5 is known to be one of the element that is often used to make the basic structure and depict content in WWW, but Javascript is known to be a vital aspect of HTML5.
Therefore, For CSS to work with HTML5 elements, the command that is placed in the above CSS is given in the image attached.
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a uniform density sheet of metal is cut into a shape of an isosceles triangle, which is oriented with the base at the bottom and a corner at the top
The horizontal center of mass will be located at the horizontal center of mass will be located on the center line. This is further explained below.
What is Location?Generally, a location or place that is inhabited, open for occupation or distinguished by some distinctive feature: situation The setting of the property contributes significantly to its overall allure.
In conclusion, The center line will serve as the location for the horizontal center of mass, which will be found at the same location as the center line.
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In linux, an ____ stores everything about a file, except for the filename and the file data.
In Linux, an inode or index node stores everything about a file, except for the filename and the file data.
What is in an inode?An inode is known to be often called index node. This is known to be a data structure that pertains to UNIX operating systems that has all the vital information that is regards to files that are found within a file system.
Not that if a file system is made in UNIX, a set amount of inodes is formed and Linux often uses an index node (or inode) to save all the key or relevant information about a file.
Hence according to the above,In Linux, an inode or index node stores everything about a file, except for the filename and the file data.
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You use a custom application that was developed in-house. On a periodic basis, the application writes or modifies several registry entries. You want to monitor these registry keys so that you can create a report that shows their corresponding settings over the next 5 days. What should you do
In the case above, the right thing that a person should do is to Configure a configuration data collector in the Performance Monitor.
What does a Performance Monitor do?The Microsoft Windows is known to have a Performance Monitor and this is known to be a tool that is one where the administrators often use to evaluate how programs functions on their computers influence the computer's performance.
Note that this tool is one that can be used in real time and therefore, In the case above, the right thing that a person should do is to Configure a configuration data collector in the Performance Monitor.
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Suppose you have an interface called ShakesHands with the following method listed in that interface: public void shakeHands(ShakesHands other); and three classes (Student, Teacher, Parent) all of which implement the ShakesHands interface, determine which of the following code fragments would compile:
The following exercise is about spotting which program or code fragment would compile and that which would not.
What is a code fragment?A code fragment is a minor or irrelevant section of the source code (determined in relation to the functionality of the Work Product as a whole).
In order to provide a product that is functionally identical to the Work Product including such Code Fragments, the Service Provider will not mix Code Fragments.
What does it mean to compile?
When a piece of code is compiled, it signifies that it has been transformed into machine code or another lower-level form that allows the program to run.
Which fragments will compile?
ShakeHands x = new ShakeHands();
This won't compile because there was no instantiation of the Interfaces.
ShakeHands x = new Student();
Because this is a valid and legal statement, it will definitely compile.
Student x = new ShakeHands();
This will not compile. The reason is that Student and Teacher are two different objects. The only thing these two classes have in common is that they both implement the ShakeHands interface, but even then, unless Student and Teacher are parent/child classes, they cannot be paired up.
ShakeHands x;
x=new Student();
x=new Teacher();
x=new Parent();
All of the aforementioned claims are true since they are all lawful. Since the ShakeHands interface is implemented by the Student, Teacher, and Parent classes, any child class's objects may be initialized using the ShakeHands class reference or object.
It is to be noted that can access only shakeHands() method defined in ShakeHands interface.
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What does it mean when we say that we are currently in the noisy, intermediate-scale quantum computing (nisq) stage?
A noisy, intermediate-scale quantum computing (nisq) stage is said to be the topmost quantum processors that has about 50 to 100 qubits, but are said to be never advanced enough to be able to attain fault-tolerance or even big enough to bring about sustainably in terms of quantum supremacy.
What does NISQ known for?It connote Noisy Intermediate Scale Quantum. Intermediate scale and it is one that tells that one is talking about devices that are said to be large enough, and have about 50 qubits or more that is said to be enough.
Note that it is also one that a person cannot by brute force simulate the quantum system via the use of the most powerful existing digital computers.
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Q 1: How computer produces result?
Q 2: Write function of power supply in system unit?
The computer produces result as an Output, by the central processing unit.
What are the function of power supply in system unit?The key functions of a power supply unit are:
It helps to change AC to DC.It transmit DC voltage to the motherboard, adapters, and othersIt gives cooling and lead to more air flow via its case.What is the result of the computer?The result shown by a computer is known as an output, the result is known to be made by the central processing unit, that is said to be a computer's whole aim for existing.
Hence, The computer produces result as an Output, by the central processing unit.
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During the maintenance phase of the sdlc, the team must _____ if a system's objectives are not being met
During the maintenance phase of the sdlc, the team must take the correct action if a system's objectives are not being met
What are the 5 phases of the traditional SDLC Software Development process)?Software process is the set of activities that constitute the development of a computer system. These activities are grouped into phases, such as: requirements definition, analysis, design, development, testing and deployment.
The main focus of this phase of the SDLC is to ensure that the needs continue to be met and that the system continues to function as per the specification mentioned in the first phase.
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Create a conditional expression that evaluates to string negative if user_val is less than 0, and non-negative otherwise.
Answer: I am supposed to write a few lines of code to create a conditional expression (ternary operation) that evaluates to string "negative" if user_val is less than 0 and "non-negative" if 0 or greater than 0.
The code I currently have prints "negative" when the number is less than zero but when a number 0 or greater is assigned to user_val it doesn't print "non-negative."
Which of the following describes the IP address of a router to which packets destined for a remote network should be sent by default
The term that describes the IP address of a router to which packets destined for a remote network should be sent by default is the a gateway of last resort.
What is 'Gateway Of Last Resort'?A Gateway of Last Resort is known to be the Default gateway and this is said to be a route that is known to be often used by the router if no other known route is seen to transmit the IP packet.
Note that Known routes are seen in the routing table. but, any route not known by the routing table is said or known to be forwarded to the default route.
Hence the primary function of a router is so that it can forward packets toward a given destination.
Therefore, The term that describes the IP address of a router to which packets destined for a remote network should be sent by default is the a gateway of last resort.
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How do budget constraints, even for the largest game design companies, affect the development schedule for a game development team? If you were building the budget for a proposed game, where would you allocate the most money? Defend your decision, explaining why this stage of the design to the production process is supported with the largest percentage of budget funds. pls help
Budget constraints affect the development schedule for a game as its includes
Technical bugs or some forms of limitations. A game that has pre-existing Intellectual Property (IP). When there is Limited resources and othersWhat is game development?This is known to be the act of making games. Know that the feature listed above can affect:
The time for the release of the gameLegal issuesFinancial loss and others.Hence, Budget constraints affect the development schedule for a game as its includes
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