oracle database is an example of the . a. hierarchical model b. file system data model c. relational database d. xml/hybrid data model.mcq answer

Hierarchical database is the data structure stores information in a tree like structure .A hierarchical database model is one where the data are structured in a way that resembles a tree.

A data model in which the data are arranged in a tree-like form is called a hierarchical database model. The information is kept in records that are linked to one another by links. A record is a group of fields, each of which has a single value.

A hierarchical database is a type of data architecture in which information is kept in records and arranged into a parent-child structure that resembles a tree, with one parent node having several child nodes that are connected by links.

Geographical data and file systems are the two main uses of the hierarchical structure in modern computing. Currently, hierarchical databases are still widely used, particularly in applications like banking, healthcare, and telecommunications that demand extremely high performance and availability.

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The data structure known as a hierarchical database organizes information into a tree-like structure. When the data are organized in a way that resembles a tree, the database model is said to be hierarchical.

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Since they found 18 incredible destinations, including this happy place with beautiful beaches, warm water, exotic wildlife and a laid-back culture. the  place that it can be found is option  4. Costa Rica.

Numerous tourists choose Costa Rica for their nature vacations because of the country's distinctive, unusual, and abundant fauna.

Exotic living species are those that have been transported from their original habitat (place) to a different one. People most frequently transfer these species to new habitats.

Some of the exotic wildlife includes"

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See options below

.1. Curacao 2. Amalfi Coast, Italy 3. Rio de Janeiro, Brazil 4. Costa Rica

A database management system (DBMS) is a piece of software that is used to construct and administer databases.

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It shares VLAN database information amongst switches that participate.

What do you mean by database?

A database is a planned grouping of material that has been arranged and is often kept electronically in a computer system. A database management system often oversees a database (DBMS).

Networks can convey network functionality through all of the switches in a domain using the virtual local area network (VLAN) trunking protocol, or VTP, a proprietary Cisco technology. This method does away with the requirement for various VLAN setups across the system.

VTP, a feature of Cisco Catalyst products, offers effective means of routing a VLAN through each switch. Additionally, VLAN pruning can be used to prevent traffic from passing through certain switches. These systems can be configured to allow or disallow trimming by users.

One idea behind VTP is that larger networks would require restrictions on which switches will serve as VLAN servers. VTP provides a number of alternatives for post-crash recovery or for effectively serving redundant network traffic.

VLAN trunking is conceptually comparable to other forms of IT trunking. By placing resources in specified configurations, managers can reduce the amount of labor that data must through to reach certain areas of a network system.

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The Sort() method is frequently used in conjunction with the BinarySearch() method because it needs the array elements to be sorted in the right order.

Only on a list of items that has been sorted can binary search be used. We must first sort the elements if they are not already sorted.

In the Array you can use the method's Sort() to see how encapsulation is done.

The binary search algorithm is used by the Arrays.binarySearch() method to search the specified array of the given data type for the specified value.

Prior to making this call, the array must be sorted using the Arrays.sort() method. If it isn't sorted, the outcomes aren't clear. There is no guarantee that the element with the specified value will be found if the array contains multiple elements with that value.

The  binary search algorithm uses binarySearch() function to look for the specified value within the given array of bytes.

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The phrase "virtual worlds" refers to interactive 3D virtual environments where users assume the form of avatars that are graphically visible to other users and are designed for them to inhabit and interact.

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Messages are broken up into packets and sent individually over the network to their destination when using packet switching.

The packets could follow several routes to their destination, so they could show up at the switch at any time. To determine the quickest route between two networks, the Routing Information Protocol (RIP) uses "hop count," which refers to the number of routers a packet must pass through. Algorithms are employed in dynamic routing to compute numerous potential routes and identify the optimum path for traffic to follow through the network. It employs link state protocols and distance vector protocols, two classes of sophisticated algorithms. Circuit switching is one of three frequently used switching methods. Switching of packets. Switching messages.

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In the 'Eye on Oversight' video case study,  the 'Wan-naCry' ranso-mware software impacted the United Kingdom National Health Service in 2017.

'Wan-naCry' is an example of crypto-ranso-mware. It is a type of malicious software used by cyber attackers to extort money. 'Wan-naCry' ranso-mware software spread rapidly across a number of computer networks in May of 2017. After infecting a Windows computer, it encrypted files on the computers' hard drives, making them impossible for users to access, then demanded a ransom payment in bitcoin in order to decrypt them.

By the 'Wan-naCry' ranso-mware around 200,000 computer devices were infected across 150 countries, where the four most affected countries were  Ukraine, India, Russia, and Taiwan.

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At the output port leading to the next hop towards the destination.

These are tables that explain how a frame will be continued out of a given switch or router in the network. These tables work by suited particular header fields, such as the IP destination address, and when a match happen, forwarding the frame to a particular egress port. The main aim of a router is to continue a packet toward its destination network, which is the destination IP address of the packet. To do this, a router required to seek the routing information stored in its routing table. The routing table consist network/next hop associations. There are four components of router, namely: input ports, output ports, a switching fabric, and a routing processor. An input port can be described as the point of attachment for a physical link and is the point of entry for incoming packets.

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2001:00cb:1562:0d:

Moreover, An IPv6 address prefix is ​​a combination of an IPv6 prefix address and prefix length used to represent a block of address space (or network), similar to using a combination of IPv4 subnet address and netmask to specify a subnet. An IPv6 address prefix has the form ipv6-prefix/prefix-length.

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Answer:

Ctrl+S

Explanation:

This command is used to quickly save a file.

Hope this helps!

Computer Engineer is not a typical role for a computer scientist on a development team.

What is a Computer Engineer?

A computer engineer is someone who combines electrical engineering and computer science to create new technology. Modern computers' hardware is designed, built, and maintained by computer engineers.

These engineers are concerned with safely and efficiently integrating hardware and software in a unified system. Computer engineers, cybersecurity professionals, and systems analysts are the second-largest category of tech jobs, according to CompTIA.

In addition to personal devices, computer engineers contribute to the development of robotics, networks, and other computer-based systems. This position entails a significant amount of research and development, testing, and quality assurance. Problem solvers and technology enthusiasts may be drawn to computer engineering.

Computer engineers collaborate with software developers and other tech professionals as part of a team. The field necessitates strong foundations in science and mathematics, and the majority of employees have a related bachelor's degree. Certifications in software, programming languages, or hardware systems can open up new doors for employment.

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Since I have to recommend an Azure solution that enables the ability to process the telemetry stream before transferring the data to Azure, I would recommend: Azure IoT Edge.

The Internet of Things (IoT) can be defined as a type of modern technology that is based on the interconnection of various physical objects with sensors, software, processors, through the internet or an active network, in order to enable them send and receive data while proffering a solution to a particular problem.

In Computer technology, Azure IoT Edge can be defined as a module that is designed and developed to avail end users an ability to deploy complex telemetry stream, machine learning, event processing, image recognition, as well as Artificial Intelligence (AI) on cloud platforms.

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The statement that is true about dictionaries is option A) Dictionary keys are immutable.

A dictionary is a changeable, unordered Python container used to store mappings between distinct keys and values. Curly brackets () are used for dictionaries, as well as key-value pairs with commas between them (,).

Note that A dictionary's keys cannot be accessed using its values, but its values can be obtained using its keys. Since dictionaries themselves are mutable, entries can always be added, deleted, or modified.

Therefore, an immutable type must be used for a dictionary key. An integer, float, text, or Boolean value, for instance, can be used as a dictionary key. However, since dictionaries and lists are both mutable, neither one can act as a dictionary key for the other.

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Should choose the model is Infrastructure as a service.

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An exception is an object that is created in memory as a result of a mistake or other unanticipated circumstance.

The Reasons Behind Exceptions

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import java.io.*;

public class Main

{

public static void main(String[] args) throws Exception

{

int num,sum=0,i;

// variable declaration

String s;

System.out.print("enter n value"); // output message

BufferedReader br = new BufferedReader (new InputStreamReader (System.in));

// br is a bufferedReader class

s=br.readLine();

// read integer from user

num=Integer.parseInt(s); // convert string to integer

if(num>0)

{

System.out.println("multiples of given number are");

// loop repeat until condition is false

for(i=1;(i*num)<=100;i++)

{

sum=sum+(i*num);

// sum the multiples of given number

System.out.print((i*num)+"\t");

// display multiples of given number

}

System.out.println("sum is"+sum);

// display the final sum value

}

else

System.out.println("0");

}

}

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When adding data sources using Design view, hence removing the two backticks is a false statement.

A relationship in Access lets you combine data from two different tables. Each connection is made up of corresponding fields from two different tables.

For instance, you may have a Product ID record in a table of goods and an order Details database.

Therefore, you may create a self-join query by adding a table to the query twice and connecting a field from the first copy of the table to a different field from the second copy of the table, hence given statement is false.

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An argument is any piece of data that is passed when a function is called by its name during the execution of a program, then it is to a function when the function is called. The correct option is b.

To execute a program in a computer is to run the program in the computer and, by extension, to start it up. People run programs in use, and systems execute them. A program is executed using system memory.

An argument allows you to provide additional information to a function. The function can then use that information as a variable while running.

To put it another way, when you write a function, you can pass data in the form of an argument, also known as a parameter.

Thus, the correct option is b.

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Your question seems incomplete, the missing options are:

a. global variable

b. argument

c. local variable

d. parameter

The robot will correctly move to the gray square in Grid I even though the program won't move it to the gray square in Grid II.

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Physical addresses contain 15 bits, while logical addresses have 16 bits. On the other hand, a physical address provides location information.

Physical address refers to a program participant's home address, place of employment, or place of attendance. A person's street, street number, and municipality make up their physical address.

A 64-page logical memory unit.

= 2⁶ pages

word count divided by 1024 equals 210

Thus, total logical memory equals 26 x 210, or 216.

A logical address will therefore have 16 bits.

Physical memory equals 32 frames.

25 frames is word count divided by 1024 equals 210

Therefore, the entire physical size is 25 x 210, or 215

Consequently, the physical address will have 15 bits.

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Just use grep command to look for such pattern supplied either by Pattern parameter in the given file, writing each line that matches to standard output.

The program which asks the user for filename and to search for a string is :

#include <iostream>

#include <fstream>

#include <string>

using namespace std;

int main()

{

string fileName,

    buffer,

    search;

int count = 0;  

cout << "Enter the name of a file: ";

cin  >> fileName;

fstream file(fileName, ios::in);

if (!file)

{

 cout << "Error opening file.\n";

 return 0;

}

cout << "Enter a string to search for in the file \""<< fileName << "\".\n";

cin  >> search;

cout << "\nString: " << search << endl;

cout << "All lines in file that contain the string:\n";

file.seekg(0, ios::beg);

while (!file.fail())

{

 getline(file, buffer);

 if (buffer.find(search,0) < buffer.length())

 {

  cout << buffer << endl;

  count++;

 }

}

cout << "Numer of times the string appeared in file: " << count << endl;

       file.close();

return 0;

}

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The right side of production is referred to as the dependant, while the left side of FD is referred to as a determinant.

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Local area networks connect computers and give users shared access to printers, data, and other resources. Peer-to-peer or client-server architectures are the two main types of local area network architecture. Thus, option B, D, E is correct.

Computers may swiftly and readily exchange data and messages using local area networks. This expedites the process and saves time.

Therefore, Any user on the network can send and receive messages and data using LAN. Users can access the server-stored data via the network from any computer.

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Answer: Operating system (OS) ?

Explanation:

This is the best guess I could give without the lesson.

The task area that best represents the actions below is  option C: determining the type of attack.

This particular malicious software program spread throughout computer files without the user's knowledge. When it is executed, this malicious computer program copies itself and inserts copies of itself into other programs.

Note that Cyberattacks aim to disable, disrupt, demolish, or take control of computer systems, as well as to change, block, delete, manipulate, or steal the data stored within these systems. Any person or organization can launch a cyberattack from any location using one or more different attack strategies.

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When writing shell scripts and using an if statement to determine whether a set of code should be executed,  the proper syntax to end the if construct is  fi.

A program is guided to make decisions based on predetermined criteria using the IF statement, which is a decision-making statement. If a certain condition is satisfied (TRUE), one piece of code is run, and if it is not, another set of code is run, and so on.

Conditionals are programming language directives used in computer science to handle decisions. If a programmer-defined boolean condition evaluates to true or false, conditionals will execute a different computation or take a different action.

Therefore, For example, if (score >= 90) grade = "A," the following example will demonstrate that the number is positive if its value is greater than or equal to 0. Number is negative is displayed if the value of the number is less than 0.

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The steps should you take to make sure the delivery of your presentation is successful are:

Understandable, memorable, and emotive presentations are successful presentations. Understandable. The absence of jargon, buzzwords, complexity, and confusion is a sign of a successful presentation.

Therefore, when presenting,

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Specifying encoding is very important because it serves as a character set for the document. If it is not done, the process will be idle and HTML parsing will not start early.

Another reason to specify it is to ensure that data is properly translated for consumption in other systems as well. For instance, special characters or binary data may occasionally be displayed on a web page. Data will be correctly utilized and will not be alien by way of encoding.

In practical circumstances, it is essential to notice the number of bytes used for data representation. To decide which one is appropriate, one can check the browser support for the selected encoding. There will be names of the encoding that should not be used.

What is encoding?

Encoding is the process of arranging a string of characters (letters, numbers, punctuation, and some symbols) in a particular format for quick transmission or storage. The process of converting an encoded format back into the original string of characters is known as decoding.

What is utf-8?

A Unicode character encoding technique is UTF-8. This means that UTF-8 converts a Unicode character's code point into a string of binary data. Additionally, it reads binary digits and converts them back to characters in the opposite direction.

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Answer:red

Explanation: