3.Assume thata,b, andcarebooleanvariables that have been properly declared and initialized. Which ofthe followingbooleanexpressions is equivalent to!(a && b) || c?(A)a && b && c(B)a || b || c(C)!a && !b || c(D)!a && !b && c(E)!a || !b || c

It can be inferred that the above task will be executed in Linux because the systemctl utility command is a Linux utility used to manage the sytemd service and the service manager on Linux.

1) In order to install NTP Service first, execute the following command as sudo in order to update your local repository index: "$ sudo apt-get update"

2) Execute this command to install NTP Server daemon from APT database: "$ sudo apt-get install ntp"

3) Next, open the file in the nano editor as sudo by executing the following command: "$ sudo nano /etc/ntp.conf"

4) Restart the NTP Service using the following command line "$ sudo service ntp restart"

To check that the NTP Service is running, execute the following command: "$ sudo service ntp status"

The Network Time Protocol (NTP) is a service that allows system clocks to be synchronized (from desktops to servers). It is not only useful but also needed for many distributed applications to have synchronized clocks. As a result, if the time originates from an external server, the firewall rules must enable the NTP service.

The usage of authentication techniques in Network Time Protocol (NTP) is critical to preventing an attacker from manipulating time information. Such systems have been present for a long time, such as the Symmetric Key-based method and the Autokey approach.

Learn more about NTP Service:
https://brainly.com/question/14857188?
#SPJ1

The descriptions best fit a normalized table is: "flexible" (Option A). Normalization is the process of structuring data in a database.

This comprises the creation of tables and the establishment of linkages between those tables in accordance with rules aimed to preserve the data while also making the database more adaptable by avoiding redundancy and inconsistent reliance.

Tables are database structures that hold all of the information in a database. Tables logically arrange data in a row-and-column structure comparable to spreadsheets.

Each row represents a distinct record, and each column represents a record field.

Learn more about Database Tables:
https://brainly.com/question/22536427
#SPJ1

Tap Search after sliding in from the right edge of the screen. In the search box, File History settings. Choose the network or external device you want to use by selecting Select a drive. Activate File History.

The $OF contains files whose pathnames are too long to be kept on your backup device, according to this answer on answer.microsoft.com. Additionally, File History is still the program Microsoft advises using for file backups even though Backup and Restore is a feature of Windows 10 itself. In stark contrast to Backup and Restore, File History's main function is to enable you to back up individual files rather than producing a full system image.

Learn more about program here-

https://brainly.com/question/14618533

#SPJ4

Select New Database from the context menu by right-clicking Databases. Enter a database name in New Database. Select OK to establish the database using all default values; otherwise, carry out the ensuing optional procedures. Select (...) to choose a different owner to alter the owner name.

Launch MySQL Workbench in administrator mode (Right-click, Run as Admin). To construct the database schema, select File>Create Schema. Click Apply after providing the schema with a name.

Expand the Databases' node in Object Explorer before expanding the database that houses the new table. Right-click your database's Tables node in Object Explorer, and then select New Table.

Therefore, To execute the SQL command that creates the schema, click Apply in the Apply SQL Script to Database window.

Learn more about SQL code here:

https://brainly.com/question/25694408

#SPJ1

Java program with function calls and list return. An image of the code and output of the algorithm is attached.

import java.util.ArrayList;

import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

     ArrayList<Integer> total_weight = new ArrayList();

     ArrayList<Integer> weight = new ArrayList();

     int N;

     double media;

     N = Numberofpeople();

     dividedintotwoteams(total_weight,weight, N);

     System.out.println("Total weight of team 1 y 2: "+total_weight);

  }

  public static int Numberofpeople() {

     Scanner sc = new Scanner(System.in);

     int n;

 System.out.println("****Divide people into two teams****  ");

 System.out.println("---------------------------------  ");

 System.out.print("Number of people in row: ");

 n = sc.nextInt();

 return n;

  }

public static void dividedintotwoteams(ArrayList<Integer> total_weight, ArrayList<Integer> weight, int n) {

    Scanner sc = new Scanner(System.in);

 int team1, team2, x;

 team1 = 0;

 team2 = 0;

 int w;

 for (x=1;x<=n;x++) {

  System.out.print(x+" person weights: ");

  do {

       w = sc.nextInt();

  } while (w<=0);

  weight.add(w); //add weight to ArrayList

  if (x%2!=0) {

   team1 = team1+w;

  } else {

   team2 = team2+w;

  }

 }

 total_weight.add(team1);

 total_weight.add(team2);

}

}

To learn more about list and functions in java see: https://brainly.com/question/18554491

#SPJ4

No, this is because that decreasing link cost won't cause a loop (caused by the next-hop relation of between two nodes of that link).

The count-to-infinity problem occurs when a node in a distance vector routing network propagates an incorrect distance to another node, causing a loop. This can happen when a link cost is decreased, since this could cause the node to incorrectly believe that the cost of the link is lower than it actually is, leading to a routing loop.

If two nodes are connected that do not have a link, then the count-to-infinity problem will not occur, as there is no potential for a routing loop. However, if the two nodes do have a link and the cost of the link is decreased, then there is the potential for a routing loop, and the count-to-infinity problem could occur.

Learn more about the count to infinity:

https://brainly.com/question/1622435

#SPJ4

Before handling any internal components, disconnect the computer and take the necessary anti-static procedures to safeguard your personal safety.

Regarding graphics

In order to inform, clarify, or amuse, graphics are graphic images or designs on a surface, including a wall, canvas, computer, newspaper, or stone. In modern usage, it refers to a visual visualization of data, such as that used in software for education and entertainment, design and manufacturing, typesetting, and the graphic arts. Computer graphics refers to images created by a computer. Graphics can be aesthetic or useful. The line between the two may become hazy if the latter is a documented form, such as a picture, or an analysis by a scientist to emphasize key characteristics.

To know more about graphics
https://brainly.com/question/11764057
#SPJ4

1. Some challenges that photographers face when trying to take a great image include:

2. Some elements that separate good images from great images include:

3. The purposes that photographers have for taking photographs include:

4. To capture images with your audience in mind simply means to have the emotions and feelings of the audience in mind.

Photographs are important in everyone's life because they connect us to our past and remind us of people, places, feelings, and stories from our past. They can assist us in determining who we are.

When we talk about capturing the moment in photography, we're really referring to the photo's feeling, emotion, vibe, or atmosphere. That comes from more than just the subjects or the surroundings; it also comes from the photographer.

Learn more about photograph on:

https://brainly.com/question/25821700

#SPJ1

They place all network devices for one part of the building physically in the same room, often in a rack of equipment.

To learn more about switched network refer :

https://brainly.com/question/12811608

#SPJ4

A company wants to create highly available datacenters. BGP will allow the company to continue to maintain an Internet presence at all sites in the event that a WAN circuit at one site goes down.

BGP (Border Gateway Protocol) is a type of routing protocol that functions to exchange information between Autonomous Systems (AS). This BGP is a Dynamic Routing and on the proxy itself there are several kinds of dynamic routing features other than BGP such as OSPF and RIP. To exchange information, BGP utilizes the TCP protocol so that there is no need to use other types of protocols to handle fragmentation, retransmission, acknowledgment and sequencing.

Learn more about BGP at https://brainly.com/question/9257367.

#SPJ4

Python program to know if a list is sorted . Output and code image attached.

def isSorted(lst2):

   for p in range(len(lst2)):

       for z in range(p,len(lst2)):

           #Return false if an item is less than or equal to its successor

           if lst2[p]>lst2[z]:

               return False

   return True

if __name__ == '__main__':

list = [int() for ind0 in range(5)]

ans = str

print("Enter 5 numbers: ")

for d in range(5):

 list[d] = int(input())

ans = isSorted(list)

if (ans):

    print("Yes")

else:

    print("No")

To learn more about sort lists in python see: https://brainly.com/question/20624654

#SPJ4

The ObjectOutputStream and ObjectInputStream classes can perform this task using the writeObject and readObject methods; Serializable lacks these methods.

The ObjectOutputStream and ObjectInputStream classes can perform this task using the write Object and read Object methods; Serializable lacks these methods. Serializable is merely a marker interface; it doesn't call for any fields or methods; it simply sets a flag. A marker interface called Serializable merely informs JVM that a specific object is set to be serialized. Internally, the serialization process takes place.

interface that is serializable. No state from classes that don't implement this interface will be serialized or desterilized. A class that can be serialized has all of its subtypes be serializable. The only purpose of the serialization interface, which has no methods or fields, is to define the semantics of being serializable.

To know more about serializable click here:

https://brainly.com/question/13326134

#SPJ4

Port numbers are used by NAT overloading to identify each local host. Because of this, the method is also known as port address translation (PAT).

Therefore, the Standard Public IP address assigned to the NAT gateway will remain dedicated to it and cannot be used by another device unless you unassign or delete it. To convert a large number of unregistered IP addresses into a smaller number of registered ones, use dynamic NAT. With the aid of dynamic NAT, you are able to use a small number of registered addresses to connect to numerous hosts on the open Internet. After a certain amount of inactivity, the entry times out, and new translations can be made using the global IP address.

Learn more about addresses here-

https://brainly.com/question/16011753

#SPJ4

Since You need to place an ad for the position. The position is Ad specialist, and the specific skills,  is to have a good knowledge of marketing and ad making. The minimum requirements for the position is  a BSC in advertising and media production or in marketing'

Creative concepts are transformed into advertising campaigns by advertising pros. They could specialize in advertising mediums like print, radio, television, and digital.

The daily management of paid digital marketing initiatives, including paid search, display, and social advertising strategies for B2B and B2C organization, is the responsibility of paid media specialists.

Most jobs are full-time or more. Sales representatives for advertising frequently put in extra hours. This profession has a dismal employment prognosis. The U.S. Bureau of Labor Statistics predicts a drop in employment through 2024.

Hence, People can prove they are experts in internet advertising by showing they have a Go ogle Ads certification and others.

Learn more about advertising from

https://brainly.com/question/1658517
#SPJ1

Before checking the URL in your web browser, save the software to your Web server's cgi-bin folders.

What is a URL?

A web address, also known as an universal resource locator (URL), is a reference to a web asset that identifies its position on a computer system and a method of retrieval. Although many people confuse the two concepts, a URL is a particular kind of Uniform Resource Identifier (URI). In addition to being used for file transfers (FTP), email (mailto), database queries (JDBC), and many other applications, URLs are most frequently utilized to refer to web pages (HTTP).

To know more about URL
https://brainly.com/question/10065424
#SPJ4

To find two points in place with minimum distance between there here is a test case for the input return Math.sqrt(Math.pow((p1.getX() - p2.getX()), 2)+Math.pow((p1.getY() - p2.getY()), 2));

//Java program

import java.util.Scanner;

class Point{

private double x,y;

public Point() {

x=0.0;

y=0.0;

}

public Point(double _x , double _y) {

x=_x;

y=_y;

}

public double getX() {

return x;

}

public double getY() {

return y;

}

}

public class Nearest {

public static void main(String args[]) {

int count;

Scanner in = new Scanner(System.in);

System.out.print("Enter number of points : ");

count = in.nextInt();

Point point[] = new Point[count];

Point p1=point[0],p2=point[0];

double x,y;

double min = Double.MAX_VALUE;

double dist=0.0;

System.out.println("Enter points");

for(int i=0;i<count;i++) {

System.out.print("Enter x : ");

x = in.nextDouble();

System.out.print("Enter y : ");

y = in.nextDouble();

point[i] = new Point(x,y);

}

for(int i=0;i<count;i++) {

for(int j=i+1;j<count;j++) {

dist = distance(point[i],point[j]);

if(dist<min) {

p1=point[i];

p2 = point[j];

min=dist;

}

}

}

System.out.println("Point with minimum distance \n");

System.out.println("point1 x: "+p1.getX()+" y : "+p1.getY());

System.out.println("point2 x: "+p2.getX()+" y : "+p2.getY());

in.close();

}

public static double distance(Point p1 ,Point p2) {

return Math.sqrt(Math.pow((p1.getX() - p2.getX()), 2)+Math.pow((p1.getY() - p2.getY()), 2));

}

}

To learn more about minimum distance

https://brainly.com/question/13169621

#SPJ4

Since the network analyst is setting up a wireless access point for a home office in a remote, rural location. The option that the network analyst should enable to meet the requirement is option 1. MAC address filtering.

A person can be able to stop traffic originating from particular recognized machines or devices using MAC address filtering. The router uses the MAC address of a computer or other networked device to recognize it and decide whether to allow or deny access.

Therefore, as a  network analyst, the use of  MAC filtering is one that is located in the settings under Advanced Settings, Security, Access Control, or a section that is similar to these. The precise location will depend on the router's brand. There are two filtering options available for you to select from.

Learn more about MAC address filtering from

https://brainly.com/question/14527362
#SPJ1

In first situation, we will use "for loop" while in second situation we will use "While loop".

What is Loop in programming?

A loop is a software program or script that repeatedly executes the same instructions or processes the same data until it is told to stop. A loop, if not handled properly, can cause the computer to slow down as it becomes overburdened with repeating the same steps in an endless loop.

For Loop Syntax:

The for statement establishes a loop with three optional expressions:

for (expression 1o1; expression 2o2; expression 3o3) {

 // code block to be executed

}

While Loop Syntax:

while ( condition ) {

  /*....while loop body ....*/

}

To knw more about Loop in Programming, visit: https://brainly.com/question/16922594

#SPJ4

Note that where while listening to exam instructions a user reports that she can't connect to a server on your network. you check the problem and find out that all users are having the same problem. What you should  do next is: "Determine what has changed" (Option B)

A computer network is a collection of computers that share resources that are located on or provided by network nodes. To interact with one another, the computers employ standard communication protocols across digital linkages.

Local-area networks (LANs) and wide-area networks (WANs) are the two main network kinds (WANs). LANs connect computers and peripheral devices in a constrained physical space, such as a corporate office, laboratory, or college campus, using data-transmitting connections (wires, Ethernet cables, fiber optics, Wi-Fi).

Learn more about networks:
https://brainly.com/question/15002514
#SPJ1

While listening to exam instructions a user reports that she can't connect to a server on your network. you check the problem and find out that all users are having the same problem. what should you do next?

What should you do next?

The solution to the above prompt with regard to the list named are:

A) dict1 = dict([(list1[i], list2[i]) for i in range(len(list1))])

B) dict1 = {}

for i in range(len(list1)) :

[Tab Key]dict1[list1[i]] = list2[i]

C)

dict1 = dict([(list1[i], list2[i]) for i in range(len(list2))])

A list or sequence is an abstract data type in computer science that contains a finite number of ordered items, where a given value may appear more than once.

The usage of lists is another programming method that will be helpful to our algorithm development because many algorithms need the manipulation of sets of data. Similar to a variable, a list—also known as an array—is a tool for data storage.

Learn more about lists:
https://brainly.com/question/26352522
#SPJ1

The Transport layer of the OSI model operates the TCP protocol. Correct answer: letter A.

The Transport layer of the OSI model is responsible for providing reliable end-to-end communication between two hosts. So, it is responsible for ensuring delivery, data sequencing and error control.

The OSI model consists of seven layers:

Sheryl is explaining the OSI model to new technicians at her company. She is trying to explain what protocols operate at the various layers of the OSI model. At what layer of the OSI model does TCP operate?

A. Transport

B. Application

C. Network

D. Data link

Learn more about the OSI model:

https://brainly.com/question/15901869

#SPJ4

The correct port number that should be used with the WinSCP or Cyberduck secure file transfer program is 22.

A port is a number used in computer networking to designate a connection endpoint and direct data to a particular service. A port is a logical construct that, at the level of software, identifies a particular process or kind of network service within an operating system. Thre are more than 800 ports.

Therefore, WinSCP or Cyberduck secure file transfer programs should be used with port number 22, which is the correct one to use.

To learn more about the file transfer program, refer to the link:

https://brainly.com/question/27380368

#SPJ1

A map of a database that shows tables and relationships is called Schema.

A database is a structured collection of related data that has been systematically organized and is kept in a way that makes it simple to manage and update. It serves as the central repository for all data, comparable to a library's collection of books spanning a variety of genres. Imagine data as a library.

The data can be set up in a database in the form of a table with rows and columns. The data can be easily located and retrieved whenever necessary by indexing it. With the aid of databases, a large number of websites on the Internet are operated. Database handlers are used to build databases that allow users to access the data using just one set of software applications.

Learn more about database

https://brainly.com/question/518894

#SPJ4

Data visualization is best defined as the use of bar chart to present report data in a way that's easy to understand.

The graphic display of information and data is known as data visualization. Data visualization tools offer a simple way to visualize and understand data by utilizing visual components like charts, graphs, and maps.

Hence, Data visualization is the study of data visualization, or data that has been abstracted in some schematic fashion and includes attributes or variables for the information units.

Learn more about Data visualization from

https://brainly.com/question/19566670
#SPJ1

Answer:

graphics; complex

Explanation:

I took the quiz

It is to be noted that what Microsoft Excel is to calculate here is "Cumulative Principal" The formula for doing this for the first payment is given as =CUMPRINC(rate, nper, pv, start_period, end_period, type).

The formula for calculating the cumulative principal paid on the first payment is as follows:

=CUMPRINC(B5/12,B6,B4,1,1,0)

To enter this formula into cell H12, type "=CUMPRINC(B5/12,B6,B4,1,1,0)" without the quotation marks.

To reference the remaining balance of payment 1 in cell B13, type "=B12-H12" without quotation marks.

To use the fill handle to copy the functions down to complete the amortization table, select cells H12 and B13, then hover the cursor over the bottom-right corner of the selected cells until the fill handle appears.

Click and drag the fill handle down to the last row of the amortization table. The functions will be automatically copied down and applied to each row of the table.

Learn more about Microsoft Excel Function:
https://brainly.com/question/23501096
#SPJ1

Two circumstances that will switch flood frames from every port except the port on which the frame was received:

The switch will transfer the frames from the port the frames have been acquired on (where Host A is connected) to the port wherein the router is attached. Kind of visitors will a transfer flood out all ports are broadcast and multicast forwarding. Since broadcast packets should be received by all stations at the network, the switch will reap that goal by flooding broadcast packets out all ports besides the port that it was received on, since there's no need to send the packet back to the originating device. Because a switch by no means learns those addresses, it constantly floods the frames that have those addresses because a transfer by no means learns those addresses, it always floods the frames that have those addresses as the destination address.

Learn more about the switch, here https://brainly.com/question/9431503

#SPJ4

A message is encoded by the sender, who then sends it. (3) The message is decoded by the receiver.

The process by which the receiver interprets the symbols used by the message's source is known as decoding. He is the recipient of the communication from the sender. Feedback: Feedback is any behavior by the recipient that shows he has heard and understood the sender's message. The process through which information is conveyed and comprehended by two or more individuals is referred to as communication. Effective communication is about conveying the sender's intended message. The receiver's job is to accurately translate the sender's message, both verbal and nonverbal, into their own language. Decoding is the process of understanding the message.

Learn more about communication here-

https://brainly.com/question/18825060

#SPJ4

The correct option is E. The following subnet that masks should Joe use for this subnet is /30.

An IP network can be logically divided into subnetworks or subnets. 1, 16 Subnetting is the process of splitting a network into two or more networks.

Similar most-significant bit groups are used in IP addresses to address computers that are on the same subnet. As a result, the network number or routing prefix and the rest field or host identity are logically separated into two fields in an IP address. A host or network interface can be identified by the remainder field.

The Classless Inter-Domain Routing (CIDR) notation allows the routing prefix to be represented as the network's primary address, followed by a slash (/), and the prefix's bit length at the end. To give one example, the prefix is 198.51.100.0/24.

To know more about subnet click here:

https://brainly.com/question/15055849

#SPJ4