One of the most significant contributions of UNIX to the development of operating systems is the idea of a shell.What is UNIX?UNIX is a family of multitasking, multiuser computer operating systems that have their roots in the AT&T Bell Labs-developed Unix of the 1960s and 1970s. Today, the term "UNIX" refers to a broader group of operating systems that share similar characteristics.Unix made a significant contribution to the development of operating systems in several ways, one of which is the concept of a shell. A shell is a command-line interface that provides users with the ability to interact with the operating system by typing in commands. This approach has several benefits over earlier operating systems, such as the ability to use scripts to automate repetitive tasks.The following are the most significant contributions of UNIX to the development of operating systems:Multitasking and multiuser: Unix was one of the first operating systems to allow several users to use the same computer simultaneously. Its multitasking capabilities allowed users to perform several tasks concurrently.C Program Language: The UNIX operating system was written in the C programming language. The fact that UNIX was written in C and that it used C as its primary programming language was a significant contribution. This made the operating system portable and simple to port to new hardware.
One of the most significant contributions of Unix to the development of operating systems is the modular and hierarchical file system design, which has influenced many modern operating systems.
the sense of solidarity or team spirit that an individual feels toward their group is called a. expressive leadership. b. group cohesion. c. instrumental leadership. d. anomie.
The sense of solidarity or team spirit that an individual feels toward their group is called b. Group Cohesion
Group Cohesion is an important factor in the success of any team. It is the connection between team members that is formed by mutual respect, trust, commitment, and accountability. It can be thought of as a sense of “oneness” that binds the group together and drives them to achieve their goals. Group Cohesion is also an important factor in group productivity and efficiency, as it leads to increased collaboration and communication among members.
Group Cohesion is created through activities that encourage members to bond with each other and build trusts, such as team-building exercises, problem-solving activities, and team games. These activities help to create a positive team environment where members feel comfortable and supported, which in turn increases morale and performance.
In conclusion, Group Cohesion is the sense of solidarity or team spirit that an individual feels toward their group. It is an important factor in the success of any team and is created through activities that encourage members to bond with each other and build trust.
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Which of the following would be described as a good business goal to set for your social media campaigns?
A. Increase staff morale
B. Increase audience engagement
C. Increase customer satisfaction
A suitable business objective to define for your social media initiatives is: Boost consumer satisfaction.
Why does customer satisfaction matter?Customer satisfaction (CSAT) is a metric used to assess how effectively a company's goods and services, as well as overall customer experience, fulfill consumer expectations. It displays the health of your company by demonstrating how well your goods or services are valued by customers. Consistency, consistency, and consistency are the three Cs of customer happiness. Although it may not appear alluring, consistency is the key to retaining customers. It takes top-level leadership focus and is challenging to get right. Always put the satisfaction of your current clients first. Customer satisfaction is crucial since it greatly enhances the likelihood that a customer will come back and do more business. If you aren't committed to satisfying your core audience, winning over new customers won't be simple.To learn more about customer satisfaction, refer to:
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you need to prepare a new replacement hard drive for storage. what is the first step needed to get it ready? a. format the drive. b. install an os. c. install a file systemd. create a partition
An entirely new replacement hard disc has to be ready for storage. the initial step required to prepare it for partition creation.
What Functions a Hard Disk Has?Your digital stuff is stored on a hard drive, which is a piece of hardware. Digital content on a hard disc includes your programmes, operating system, documents, photos, music, movies, photographs, songs, and other media. Hard drives can be internal or external.A platter that has sections to store data makes up a hard disc drive (HDD). This information includes your operating system, programmes, and any files you've made. In order to read or write the needed information, an accuator arm also moves across the platter. As the accuator arm passes over the platter, it spins to speed up the process.Therefore,
There must be at least one partition before the hard drive may be used for file storage. After partitioning it, you can format the drive to install a file system.
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all of the following have multitouch capabilities except: select one: a. unix b. some android devices c. windows 10 d. windows 8 e. ios
Note that all the operating system listed have multitouch capabilities.
What is a Multitouch capability?Multitouch capability refers to the ability of a computer or device to recognize and respond to the input of multiple touch points simultaneously. This allows users to interact with the device in a more intuitive and natural way, using gestures such as pinch-to-zoom, swipe, and rotate.
Multitouch technology is commonly found on smartphones, tablets, and touchscreen laptops, but can also be integrated into larger displays and interactive kiosks. It has become an increasingly important feature in modern computing, as it enables a more efficient and immersive user experience.
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Write a program that reads the content of a text file called text.txt. the program should create a dictionary in which the keys are individual words found in the file and the values are the amount of times the word appears in the file. For example, if the word 'the' appears in the file 128 times, the dictionary would contain an element with the key as 'the' and the value as 128. Write in Python
Answer:
python
Copy code
# Open the text file for reading
with open('text.txt', 'r') as file:
# Initialize an empty dictionary to store word counts
word_counts = {}
# Loop through each line in the file
for line in file:
# Split the line into individual words
words = line.split()
# Loop through each word in the line
for word in words:
# Remove any punctuation from the word
word = word.strip('.,;:?!')
# Convert the word to lowercase
word = word.lower()
# If the word is already in the dictionary, increment its count
if word in word_counts:
word_counts[word] += 1
# If the word is not yet in the dictionary, add it with a count of 1
else:
word_counts[word] = 1
# Print the resulting word count dictionary
print(word_counts)
Explanation:
This code uses the open() function to open the "text.txt" file for reading, and then reads each line of the file using a for loop. Each line is split into individual words using the split() method, and then each word is cleaned up by removing any punctuation and converting it to lowercase. The code then adds each word to a dictionary and counts the number of occurrences of each word. Finally, the resulting dictionary of word counts is printed to the console.
in an enterprise-level relational database, where might you save a query if you anticipate running it often?
If you anticipate running a query often in an enterprise-level relational database, you might save it as a B. stored procedure.
A stored procedure is a precompiled and stored database object that encapsulates a specific set of operations or queries. By creating a stored procedure, you can execute complex queries or a series of queries with a single command, which can save time and resources. Stored procedures can be executed from various programming languages or applications, and they can be used to improve security by limiting access to sensitive data or operations.
Indexes, navigation forms, and system catalogs are not used to save queries in the same way as stored procedures. Indexes are used to speed up data retrieval by creating a separate structure that allows faster searching of data. Navigation forms are used to provide a user-friendly interface for accessing data. System catalogs are used to store metadata about database objects, such as tables, indexes, and stored procedures.
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Your question is incomplete, but probably the complete question is :
In an enterprise-level relational database, where might you save a query if you anticipate running it often?
a. index
b. stored procedure
c. navigation form
d. system catalog
I SERIOUSLY NEED HELP ON THIS WILL GIVE BRAINLIEST TO WHOEVER ANSWERS THIS RIGHT
Fill in the blanks to complete the “rows_asterisks” function. This function should print rows of asterisks (*), where the number of rows is equal to the “rows” variable. The number of asterisks per row should correspond to the row number (row 1 should have 1 asterisk, row 2 should have 2 asterisks, etc.). Complete the code so that “row_asterisks(5)” will print:
*
* *
* * *
* * * *
* * * * *
def rows_asterisks(rows):
# Complete the outer loop range to control the number of rows
for x in range(___):
# Complete the inner loop range to control the number of
# asterisks per row
for y in range(___):
# Prints one asterisk and one space
print("*", end=" ")
# An empty print() function inserts a line break at the
# end of the row
print()
rows_asterisks(5)
# Should print the asterisk rows shown above
The function should use a nested loop to print rows of asterisks, with the outer loop controlling the number of rows and the inner loop controlling the number of asterisks per row. The number of asterisks per row should correspond to the row number.
The given code demonstrates the implementation of a function named "rows_asterisks", which takes an integer variable "rows" as an argument. The purpose of this function is to print rows of asterisks, where the number of rows is equal to the "rows" variable, and the number of asterisks per row should correspond to the row number.
The function contains two for-loops, one for controlling the number of rows, and the other for controlling the number of asterisks per row. The first for-loop uses the range function to create a sequence of numbers from 0 to rows-1. This sequence is used to control the number of rows. The second for-loop uses the range function to create a sequence of numbers from 0 to x. This sequence is used to control the number of asterisks per row.
Within the second for-loop, the print function is used to print an asterisk and a space, with the "end" argument set to " ". This causes each asterisk to be printed on the same line, separated by a space. After the inner loop completes, an empty print function is used to insert a line break at the end of the row, before moving on to the next row.
When the function is called with an argument of 5, it should print the asterisk rows shown in the prompt.
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Which of the following network design elements allows for many internal devices to share one public IP address?A. DNATB. PATC. DNSD. DMZ
The network design element that allows for many internal devices to share one public IP address is Port Address Translation (PAT).
Network design is the process of designing the architecture and configuration of a computer network that satisfies its goals and objectives. Network design refers to the design of a new network, as well as the expansion or upgrade of an existing network.
Internet Protocol (IP) is a set of rules for exchanging packets of data between computers on the Internet. The IP address is a unique identifier assigned to each computer on the network to enable communication
Port Address Translation (PAT) is a method of sharing a single IP address among many network devices by assigning a different TCP port number to each network device. PAT is a type of Network Address Translation (NAT). PAT translates the IP address and port number of outgoing packets to a public IP address and a unique port number that identifies the network device that sent the packet. In the reverse direction, PAT maps the public IP address and port number to the internal IP address and port number of the network device to which the incoming packet is addressed, allowing the packet to reach its destination.
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assume a destination computer receives messages from several computers. how can it be sure that the fragments from one source is not mixed with the fragments from another source
To ensure that the fragments from one source are not mixed with the fragments from another source, the destination computer must use source port numbers and sequence numbers.
The TCP header includes source and destination port numbers and a sequence number to help ensure that fragments from one source are not mixed with fragments from another source. This is because each source will have a unique port number and sequence number.The TCP header includes source and destination port numbers and a sequence number to help ensure that fragments from one source are not mixed with fragments from another source. This is because each source will have a unique port number and sequence number.Therefore, the destination computer can use the sequence number in the header to ensure that the fragments are reassembled in the correct order.
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the divide operator is more difficult to use than a join because the matching requirement is more stringent. group of answer choices true false
The statement "The divide operator is more difficult to use than a join because the matching requirement is more stringent" is true.
The divide operator is a type of operator that is used in database management systems to combine two tables. The divide operator in SQL or Relational Algebra is used to retrieve all those tuples from a relation R that is related to all the tuples of relation S.
It's more difficult to use than a join operator because the matching requirement is more stringent. Here, every record in the second table must correspond to one or more records in the first table, and each record in the first table must match every record in the second table. As a result, the divide operator must be used with care, and it's not as commonly used as join.
To clarify, the join operator is used to combine two tables into a single table. The join operator retrieves data from two or more tables by comparing column values. It can also be used to add additional columns to an existing table. On the other hand, the divide operator is used to retrieve data that meets specific criteria, and it must be used carefully since it is less commonly used than other operators.
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Stuart is explaining search results rankings to his younger brother. Which of the following should he NOT state as parameters for page rankings?a. design quality of the webpageb. location of the server hosting the webpage
Stuart should not state A: "the design quality of the webpage" as a parameter for page rankings.
It is because search engines typically do not consider the design of the webpage in their algorithms. However, the location of the server hosting the webpage can be a factor in page rankings since it can affect the page loading speed, which is a crucial factor in user experience.
Other factors that can affect page rankings include the relevance and quality of content, the use of keywords, user engagement metrics, and the authority and credibility of the website.
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select the following statement that is incorrect about primary keys: when adding a record to a table, you must insert the record in primary key order. the primary key field is used to uniquely identify a record in a table. records in a table will be displayed in order by primary key, regardless of the order in which you entered them. a primary key prevents duplicate values from being entered in the key field.
The incorrect statement about primary keys is: when adding a record to a table, you must insert the record in primary key order.
What is a Primary Key?A primary key is a unique identifier for a record in a database table. It's a field in a table that distinguishes one record from another. It's made up of one or more fields or columns that are used to keep the table's records unique.
A Primary Key has the following characteristics:
It must have a distinct value that is not shared by any other record in the database.The value of the key field should never be null, i.e. it should always have a value.The main key value should be consistent, that is, it should never change.The values of primary keys are utilized to link with foreign keys in another database, resulting in a one-to-many relationship between the two tables.You do not have to put a record into a table in primary key order. Based on the main key value, the database system will sort it in the right order.Therefore, the correct option is: when adding a record to a table, you don't have to insert it in primary key order.
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cabinets, cutout boxes, and meter socket enclosures can be used for conductors feeding through, spliced, or tapping off to other enclosures, switches, or overcurrent devices where:
Cabinets, cutout boxes, and meter socket enclosures can be used for conductors feeding through, spliced, or tapping off to other enclosures, switches, or overcurrent devices where the location and arrangement provide adequate space and accessibility.
They can also be used where there is sufficient ventilation and proper environmental conditions. The location and arrangement should provide easy accessibility, such as height and location, for inspection, adjustment, service, and replacement. Cabinets, cutout boxes, and meter socket enclosures can be used indoors or outdoors, depending on the design and rating of the enclosure. Additionally, the cabinet or box shall be installed in a neat and workmanlike manner.The internal construction of cabinets, cutout boxes, and meter socket enclosures shall be of such character that it will securely hold the wires and keep them in position. It should not have sharp edges, and it should be free of any burrs that may damage the insulation of the wires. The enclosure shall also be suitable for the current and voltage rating of the circuit conductors connected to it.
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what are two protocols that are used by aaa to authenticate users against a central database of usernames and password? (choose two.)
The two protocols used by aaa to authenticate users against a central database of usernames and passwords, are TACACS+ or RADIUS. The correct answer B and E.
RADIUS (Remote Authentication Dial-In User Service) is a widely used protocol for managing user authentication, authorization, and accounting. It was originally developed for dial-up connections but is now used for other types of network connections as well.
TACACS+ (Terminal Access Controller Access-Control System Plus) is a protocol developed by Cisco that provides similar functionality to RADIUS, but with some additional features. TACACS+ separates the authentication, authorization, and accounting functions, allowing for more granular control over each.
Complete question:
What are two protocols that are used by aaa to authenticate users against a central database of usernames and password? (choose two.)
A) NTP
B) TACACS+
C) SSH
D) HTTPS
E)RADIUS
F)CHAP
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consider an http client that wants to retrieve a web document at a given url. the ip address of the http server is initially unknown. what transport and application-layer protocols besides http are needed in this scenario?
In order to retrieve a web document from a given URL, the client needs to employ both transport-layer and application-layer protocols besides HTTP. The transport-layer protocol required is Transmission Control Protocol (TCP).
This protocol establishes a connection between the client and server and enables the client to find the server's IP address. Once the client has the server's IP address, the client can use Hypertext Transfer Protocol (HTTP) to request the web document from the server. The HTTP protocol provides the means for the server to respond to the request and for the client to receive the web document. Other application-layer protocols that may be employed are Secure Hypertext Transfer Protocol (S-HTTP), File Transfer Protocol (FTP), and Secure Socket Layer (SSL). S-HTTP is used for secure web transactions, FTP for downloading files from a server, and SSL for secure web communications. In conclusion, the client needs TCP to establish a connection and the server's IP address, and HTTP, S-HTTP, FTP, and SSL to request and receive the web document.
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A license filter in a search engine helps you find images online that you can legally copy for personal or commercial use without paying a fee.a. Trueb. False
The given statement "A license filter in a search engine helps you find images online that you can legally copy for personal or commercial use without paying a fee." is true because a license filter in a search engine allows users to search for images that have been licensed for specific types of use, such as personal or commercial use.
This helps users to find images that they can legally copy and use without infringing on the original creator's copyright. By filtering search results based on licensing information, users can avoid accidentally using images that are protected by copyright, and reduce their risk of facing legal action for copyright infringement. License filters are an important tool for anyone who regularly uses images in their work or personal projects and wants to ensure that they are using them legally.
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Design a program that calculates and displays the number of miles per hour over
the speed limit that a speeding driver was doing. The program should ask for the
speed limit and the driver’s speed. Validate the input as follows:
● The speed limit should be at least 20, but not greater than 70.
● The driver’s speed should be at least the value entered for the speed limit
(otherwise the driver was not speeding).
Once correct data has been entered, the program should calculate and display the
number of miles per hour over the speed limit that the driver was doing
In bash shell script code, please.
Python's input() function can be verified using try-except blocks enclosed in a while loop for both the posted speed limit and the vehicle's speed.
What is Python's input?To collect user input, the input() method in Python is utilised. It reads a line and asks for input from the user. It reads input, converts it to a string, and then returns the string. If EOF is read, it raises the EOFError exception.Using an input device like a keyboard, the input() function reads a line entered on a console or screen and turns it into a string. Understanding what is input in Python is crucial for a novice developer.Therefore,
Python's input() function can be verified using try-except blocks enclosed in a while loop for both the posted speed limit and the vehicle's speed. The while loops allow the software to "ask" the user for the correct input multiple times, such as in the first inquiry about the speed limit to ensure that it falls between 20 and 70.
while True:
try:
spd_limit = int(input("What is the speed limit? "))
except ValueError:
print("Please enter valid integer number.")
continue
else:
if spd_limit >= 20 and spd_limit <= 70:
break
else:
print("Please enter speed limit between 20 and 70.")
continue
While True:
try:
driver_spd = int(input("What is the driver's speed? "))
except ValueError:
print("Please enter valid integer number.")
continue
else:
if driver_spd < spd_limit:
print("Driver was below the speed limit.")
continue
else:
over_limit = driver_spd - spd_limit
print(over_limit)
break
The over limit variable must be returned for this to work as a function even if it is meant to execute as a script.
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When creating a new Group in Active Directory, the Group setting is used to define how and where a group can assign or be assigned permissions. Scope Type Category Assignment
The Group Scope setting in Active Directory is used to specify how and where a group can assign or be assigned permissions.
How can I add permissions to an Active Directory group?To change NTFS permissions, go to AD MANAGEMENT > File Server Management. Define which folders a user or group should have access to. Now navigate to the Accounts area and select the individuals or teams you wish to give access to the folder for. By selecting Modify, you may complete the modifications. The two types of groups in Active Directory are: For granting access rights to shared resources, use security groups. Lists of email addresses can be created using distribution groups. Choose Organization settings. The group you wish to add a member to is available after you choose Permissions. Add is the second option after choosing Members. Without waiting for an acceptance, you can invite people to Azure AD and your organisations that it supports.To learn more about the Active Directory group, refer to:
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true or false: like the osi and tcp/ip models, moore's law is a theoretical model predicting the processing cost and power that has not been observed in reality.
The given statement "like the osi and tcp/ip models, moore's law is a theoretical model predicting the processing cost and power that has not been observed in reality." is false because unlike the OSI and TCP/IP models, Moore's Law is not a theoretical model, but rather an observation and prediction based on empirical evidence.
It states that the number of transistors on a microchip doubles every 18 to 24 months, which has been observed in reality for several decades. This observation has enabled a remarkable improvement in processing power and reduction in cost, leading to the rapid advancement of technology. One of the two primary methods of data transmission in a TCP/IP network is TCP. The other one is UDP, a best-effort connectionless protocol. TCP ports are used by devices to communicate through TCP. A TCP port often serves as an endpoint identification particular to an application or service.
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5. why should a mutator method validate the input before changing the data values stored in an object?
A mutator method should validate the input before changing the data values stored in an object because this ensures the integrity of the data. Input validation ensures that the data is in the correct format and meets the necessary requirements before it is processed.
By validating input, we can protect the object from receiving erroneous data, which can lead to unexpected or undesirable results. Furthermore, it prevents malicious users from taking advantage of any vulnerabilities in the object. For example, if a mutator method does not validate the input, a user may be able to change the object's data values to a malicious value.
Therefore, validating input before changing the data values stored in an object is essential for protecting the object from malicious users and ensuring the integrity of the data.
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which feature is found on almost every website to assist you with locating information? group of answer choices navigation network topology packet none of the above previousnext
The feature that is found on almost every website to assist you with locating information is navigation.
Website navigation is the collection of components (e.g., menus, links, buttons, search bars, and other graphical elements) that visitors utilize to access and navigate a website's sections and pages.
A website's navigation scheme serves as a road map that helps visitors quickly identify the site's sections and pages. It assists users in finding the information they require on a website. Navigation is essential because it aids in the organization and structure of the website's information.
The structure of the navigation system of a website should be simple, and user-friendly, and enable visitors to get to their desired page with ease. As a result, navigation is a critical component of website design.
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service-oriented architecture enables which of the following services? select one. question 11 options: web-based technology service life cycle internet of things virtualization
Service-oriented architecture enables web-based technology services.
A service-oriented architecture (SOA) is a design paradigm that helps to create software as a collection of services that can be accessed via a network protocol and combined and reused to create applications.
SOA is a design pattern that enables application development by reusing pre-built components called services. These services communicate with each other through open, standard interfaces, making them interoperable regardless of the technology stack they are built on.
SOAs provide a mechanism for designing and delivering services that are decoupled from the underlying technology. This decoupling enables the reuse of services across multiple applications and platforms, making them cost-effective and agile. SOA aims to improve the way organizations work by providing an architecture that promotes loose coupling, allowing applications to communicate more effectively and with greater flexibility.
Web-based technology services are one of the primary services that SOA enables. They are a set of services that are accessed via the internet, allowing them to be accessible from anywhere at any time.
These services can range from simple web pages to complex web applications, all of which are designed to provide functionality and improve the user experience. These services are often based on web technologies such as HTML, CSS, and JavaScript.
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define the function checkvalues() with no parameters that reads integers from input until 1 is read. the function returns true if none of the integers read before 1 are between -100 and -90 inclusive. otherwise, the function returns false. ex: if the input is 2 -95 -80 1, then the output is:
The offered Python challenge requires you to define a function named checkvalues() that takes no parameters. The function will read integers from the input until it reaches the value 1. If none of the integers read before 1 are between -100 and -90 inclusive, the function returns True; otherwise, the function returns false. Here's how to define the necessary function:
def checkvalues():
x = True
while True:
num = int(input())
if num == 1:
break
if -100 <= num <= -90:
x = False
return x
If the user provides the following input: 2 -95 -80 1. Then, the output from the function(with no parameters) will be True. Because none of the integers read before 1 is between -100 and -90 inclusive.
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to avoid confusion, each component in the wbs needs to have a unique name and a unique number. group of answer choices false true
The statement "to avoid confusion, each component in the WBS needs to have a unique name and a unique number" is TRUE.
WBS stands for Work Breakdown Structure. It is a useful project management tool that helps to break down the project's work into smaller, more manageable components, making it easier to manage, monitor, and control. In WBS, each component must have a unique name and number to avoid confusion. Because it specifies the project's complete scope, a WBS aids in defining project objectives and establishing the project's critical path. A WBS also facilitates the project manager's communication with the project team and stakeholders, ensuring that everyone is aware of the project's progress.
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what is output? public class student { private double mygpa; private int mycredits; public void increasecredits(int amount) { mycredits
The output of the public class Student is the value stored in the private variables mygpa and my credits. The public void increase credits (int amount) method will increase the value of my credits by the amount specified.
This increase is permanent and is not reversed until the program is terminated. The code shows a simple example of data abstraction, which is a technique used in software engineering to hide certain parts of a program from users. By declaring the variables as private, the user is not able to directly access them and can only change their values through the public void increase credits (int amount) method.
Data abstraction allows for the separation of code logic from the user interface and can be used to protect data from malicious or accidental modification, making programs more secure.
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in an aon network, a sequence of connected, dependent activities is termed a(n) group of answer choices path. sequence of events. parallel path. activity chain. dependent chain.
In an AON (Activity on Node) network, a sequence of connected, dependent activities is termed a path.
In an AON network, a sequence of connected activities refers to a series of related tasks that must be completed in a particular order, where the completion of one task is a prerequisite for the start of the next. For example, in a construction project, pouring the foundation may need to be completed before framing the walls.
The sequence of these activities will define the path or paths through the network. Each subscriber has their own fiber-optic connection that is terminated on an optical concentrator in an AON point-to-point network configuration.
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Which of the following NAC agent types creates a temporary connection?
Agentless
Dissolvable
Permanent
Zero-trust
The NAC agent type that creates a temporary connection is Dissolvable.
Network Access Control (NAC) is a security technology that is utilized to enforce the security compliance policy on all devices seeking access to a network. It does this by restricting the access of any unauthorized devices. To achieve this, the Network Access Control (NAC) system uses several tools, including agents.
There are two types of NAC agents, which include: Permanent agents - these agents are installed on endpoints by the IT administrator or system manager. These agents are used to monitor the device and ensure that they comply with security policies as defined by the network administrator.
Dissolvable agents - These agents create a temporary connection to the network and are often used when there is no permanent agent installed on the endpoint. Dissolvable agents are used to enforce security policies on noncompliant devices.Thus, we can say that the NAC agent type that creates a temporary connection is Dissolvable.
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A data model that does not contain repeating fields and that the data models leads to tables containing fields that are dependent on a whole primary key is in ____ normal form.
A) 1NF
B) 2NF
C) 3NF
D) BCNF
A data model that does not contain repeating fields and has tables containing fields that are dependent on a whole primary key is in
(B) 2NF (Second Normal Form).
In 2NF, all non-key attributes are dependent on the primary key, and there are no partial dependencies. This means that each non-key attribute is dependent on the entire primary key, rather than just part of it.
Since the description given in the question mentions that there are no repeating fields and the fields are dependent on the whole primary key, but does not mention anything about transitive dependencies or determinants being candidate keys, the data model is in 2NF. Hence, the correct option is :
(B) 2NF
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when a variable is passed by value, changes to that argument made within the module also affect the value of the variable in the part of the program that made the call to that module. T/F
When a variable is passed by value, changes to that argument made within the module also affect the value of the variable in the part of the program that made the call to that module is False.
Pass by value and pass by reference are two methods for passing data from one module to another. In pass by value, the argument is copied into the parameter of the called function, whereas in pass by reference, a reference or pointer to the argument is provided.
As a result, changes made to the parameter inside the function have no effect on the argument in pass by value, while changes made to the parameter inside the function affect the argument in pass by reference. The module also affect the value of the variable in the part of the program that made the call to that module is False.Learn more about argument visit:
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help don't know the answer
Answer:
B. reviews and record keeping
Explanation: