1. Run nslookup to obtain the IP address of the web server for the Indian Institute of Technology in Bombay, India: www.iitb.ac.in. What is the IP address of www.iitb.ac.in
2. What is the IP address of the DNS server that provided the answer to your nslookup command in question 1 above?
3. Did the answer to your nslookup command in question 1 above come from an authoritative or non-authoritative server?
4. Use the nslookup command to determine the name of the authoritative name server for the iit.ac.in domain. What is that name? (If there are more than one authoritative servers, what is the name of the first authoritative server returned by nslookup)? If you had to find the IP address of that authoritative name server, how would you do so?
5. Locate the first DNS query message resolving the name gaia.cs.umass.edu. What is the packet number6 in the trace for the DNS query message? Is this query message sent over UDP or TCP?
6. Now locate the corresponding DNS response to the initial DNS query. What is the packet number in the trace for the DNS response message? Is this response message received via UDP or TCP?
7. What is the destination port for the DNS query message? What is the source port of the DNS response message?
8. To what IP address is the DNS query message sent?
9. Examine the DNS query message. How many "questions" does this DNS message contain? How many "answers" answers does it contain?
10. Examine the DNS response message to the initial query message. How many "questions" does this DNS message contain? How many "answers" answers does it contain?

If someone needs a hard drive with fast data access and a small outline, the type of storage that should be recommended is a Solid-state hard drive (SSD). The correct answer is B.

An SSD, also known as a solid-state drive, is a storage device that employs flash memory to store data. It is smaller in size and faster than a standard hard disk drive (HDD). It has a faster read/write speed than an HDD and consumes less energy than an HDD because it does not have any moving parts.

A magnetic hard drive has moving parts and is slower than an SSD. Optical drives, on the other hand, are used to read data from CDs, DVDs, and Blu-ray discs, and are not suitable for storage purposes. Flash drives are often used for data transfer and storage, but they have a lower storage capacity than an SSD.

Therefore, if someone needed a hard drive with fast data access and a small outline, the type of storage that would be recommended is a Solid-state hard drive (SSD).

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Option d is correct, Fuser is the printer consumables which is most likely causing the issue.

The issue described, where printouts have double images imposed on them, is a common symptom of a faulty fuser in a laser printer.

The fuser is responsible for bonding toner to the paper, and if it is not functioning properly, it can cause double images or smudging on the printouts.

Given the lack of maintenance kit installation for over a year, it is highly likely that the fuser needs to be replaced or repaired.

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C: TCP/IP stands for Transmission Control Protocol/Internet Protocol, and it is the basic communication protocol used on the Internet.

It is a suite of communication protocols used for connecting network devices and sending data between them. TCP is responsible for the reliable transmission of data over the internet, while IP is responsible for routing packets to their destination. It is supported by every major network operating system, which makes it possible for devices from different manufacturers and platforms to communicate with each other. TCP/IP is a fundamental technology that enables the functioning of the internet and is essential for any device that needs to connect to the internet.

Thus, the answer is (c) TCP/IP.

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Once the loop is done iterating, the value of sum is returned, which is the sum of all numbers between the two values.

To write a method called sum that adds up all numbers between two numbers a and b using a while loop, you can use the following code:

This code takes two parameters, a and b, and then adds up all numbers between the two values, storing the result in the sum variable. The while loop iterates as long as a is less than or equal to b, and each iteration adds the current value of a to the sum variable, and then increments a.

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The given statement "the transport layer uses port numbers to identify the source and destination application-layer protocol of the data that it contains" is true. It is becasue the transport layer in the TCP/IP protocol suite uses port numbers to identify the source and destination application-layer protocol of the data that it contains.

Port numbers are 16-bit unsigned integers that range from 0 to 65535. The first 1024 port numbers are reserved for well-known services such as HTTP, FTP, and SMTP, while the remaining port numbers can be used by applications or services as needed. When data is sent from an application, the transport layer in the operating system adds a source port number to identify the application that is sending the data, and a destination port number to identify the application that is intended to receive the data.

When the data arrives at the destination, the transport layer uses the destination port number to deliver the data to the correct application.

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If we initialize semaphores to -1, it creates a deadlock; while if it is initialized to 3, it allows three processes to access the critical section simultaneously.

In using semaphores to control access to a critical section, initializing the semaphore counter to -1 would result in a deadlock. This is because the semaphore counter represents the number of available resources, and a negative value indicates that the resource is currently unavailable. If the semaphore counter is initialized to -1, then the first process that tries to access the critical section will block indefinitely because the semaphore value will never be incremented.

Initializing the semaphore counter to 3 would allow up to three processes to access the critical section simultaneously. However, if more than three processes try to access the critical section, then some processes will be blocked until one of the processes currently in the critical section releases the semaphore.

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Opening NAT type for multiple PCs requires you to create a static IP address and forwarding ports on your router. This will allow the router to allocate a specific IP address to each device that will always be the same.

Opening NAT type for multiple PC's- To open NAT type for multiple PCs, follow the steps below:

Step 1: Get the MAC addresses of all PCs. Ensure that you have the MAC addresses of all the devices that you want to connect to the network. The MAC address is the unique address that identifies each device on the network. To find the MAC address on a PC, open the command prompt and type "ipconfig/all"

Step 2: Reserve an IP address for each device. Once you have the MAC addresses, you can reserve an IP address for each device. This ensures that each device will always have the same IP address. You can do this by logging into your router and creating a static IP address.

Step 3: Port forwarding. Once you have created static IP addresses, you will need to forward the ports for each device. This involves opening the required ports for each device on your router. This can be done by accessing your router settings and forwarding the required ports. To do this, you will need to know which ports to forward for each device. You can find this information online, or by contacting the manufacturer of your devices.

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The use of performance appraisal systems for e.union negotiation is not a common use as described in the text.

While performance appraisal systems can be used for various purposes, such as human resource planning, career planning and development, compensation decisions, and individual performance improvement, their use in union negotiations is not typically mentioned as a common application. Performance appraisal systems are more commonly used as a tool for providing feedback, setting goals, and identifying areas for improvement for individual employees. Union negotiations are typically conducted at a higher level, such as between union representatives and management, and involve issues related to wages, benefits, and working conditions. Thus, option e is the correct answer.

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When configuring password and account lockout policies that Active Directory domain controllers will enforce, you should link the Group Policy object that you created to the Domain Controllers OU because most of the domain controllers are located there.

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This is a BASIC program that defines and calls a subroutine named "seri" which prints out the word "SCIENCE" in a series of shortened versions on each line.

The first line declares the subroutine "seri".

The second line clears the screen.

The third line calls the "seri" subroutine.

The "seri" subroutine starts by assigning the string "SCIENCE" to the variable "a$".

The length of the string "a$" is assigned to the variable "b".

The subroutine then enters a loop that will run 4 times, with the loop variable "I" starting at 1 and increasing by 1 each time.

Inside the loop, the subroutine prints out a tab character followed by a shortened version of the string "a$".

The MID$ function is used to extract a substring from the original string starting at position "i" and continuing for "b" characters.

This means that on the first iteration of the loop, the substring "SCIENCE" will be printed out, but on subsequent iterations the substring will be shorter.

The variable "b" is then decreased by 2, so that each iteration of the loop prints a shorter substring than the previous one.

Once the loop has completed, the subroutine ends.

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Given classes Mammal and Dog , it is true that "Mammal is the base class". Thus, Option D is correct.

A base class, also known as a superclass, is a class that serves as the foundation for one or more derived classes. It's the parent class for the derived class. A derived class is a class that derives its functionality from the base class. A derived class is a class that inherits its functionality from a base class. It is the subclass of the base class.

The derived class inherits all the members of the base class, including constructors, destructors, operators, and other member functions.

In object-oriented programming, a base class (also known as a superclass or parent class) is a class from which other classes are derived. In this case, Mammal is a more general class and Dog is a more specific class that inherits characteristics from Mammal.

Therefore, Mammal is the base class as it is higher up in the inheritance hierarchy, and Dog is derived from Mammal as it inherits properties and behaviors from the Mammal class. Option C is also partially correct as Dog can be directly derived from Mammal, but it is not directly derived from Canine unless Canine is also a subclass of Mammal.

Based on this explanation, Option D holds true.

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It would be better for an author to use a Creative Commons license instead of a traditional copyright in the following situations: I. The author wants to make the e-book available as a free download. and III. The author wants to allow people permission to use and modify the e-book. The correct answer is F.

The Creative Commons is a non-profit corporation that provides a set of legal tools to the general public free of charge to allow them to share and reuse digital resources such as music, videos, and photographs, among other things. In comparison to traditional copyright licenses, a Creative Commons license is more versatile.

There are numerous advantages to using Creative Commons licensing. It enables the author to retain ownership of the material while providing the public with permission to use, duplicate, or distribute it as long as they comply with the terms of the license specified by the author. Creative Commons licensing also facilitates the modification and distribution of creative works, resulting in the creation of a thriving and dynamic creative environment. As a result, when publishing an e-book, an author may want to consider using a Creative Commons license instead of a traditional copyright to encourage distribution and interaction with the public.

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The given statement "When you issue the command to compile a class containing errors, the Java compiler does not produce any error messages" is false.

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The words between the HTML tags will appear on the screen for the following source code of a webpage as: As a heading in the browser window.

The words between the HTML tags will likely appear as a heading on the webpage. When a person visits a website, the welcome information is often a heading that is well-highlighted and possibly colored to portray an inviting atmosphere.

When the visitor sees this tag, they get the idea that they are welcome and can explore the page for more service offerings and functionalities.

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Option -D:The most effective way to mitigate a worm attack is to download security updates from the operating system vendor and patch all vulnerable systems.

It is important to keep systems up-to-date with the latest security patches to prevent the spread of worms and other malware infections.To avoid worm attacks, it is crucial to implement strong security measures, such as the following:Download security updates from the operating system vendor and patch all vulnerable systems.Keep your antivirus and antimalware software up-to-date to ensure that you have the most current virus definitions and signatures. Ensure that AAA is configured in the network, which stands for Authentication, Authorization, and Accounting.

This technology is used to secure and manage user access to network resources.Change system passwords every 30 days. This helps to prevent unauthorized access to your systems and network devices.There are other steps you can take to improve your system's security, such as using firewalls, setting up intrusion detection systems, and configuring network segmentation. To prevent worm attacks, you should also educate your users about how to avoid phishing emails, spam, and other forms of social engineering that can be used to spread malware infections.Thus the correct answer is Download security updates from the operating system vendor and patch all vulnerable systems.

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It may consist of transcripts of conversations, written assignments, recordings of oral language evaluations, and other documentation of the student's language competence.

The process of gathering, compiling, and preserving written or digital records of information is referred to as documentation. It is a necessary tool for a variety of occupations, such as those in healthcare, education, and business. Documentation is essential in the context of education for monitoring student progress, recording learning goals, and assessing results. It enables educators to document observations, evaluations, and other information that can be utilised to decide on instructional approaches and student requirements. Due to the fact that it serves as a record of the actions and decisions made, documentation also aids in ensuring accountability and transparency. Communication, cooperation, and decision-making can all be improved with the use of effective documentation techniques, both inside and outside of the classroom.

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An unsigned application that asks for unfettered access to the system often causes the operating system or security software to issue a security warning or alert.

A software programme that lacks a valid digital signature or certificate issued by a reliable authority that certifies its origin and integrity is referred to as an unsigned application. Software programmes' validity, integrity, and dependability are checked using digital signatures and certificates to make sure no unauthorised parties have tampered with or changed them. Unsigned programmes could be a security issue since they might be infected with malware, viruses, or other harmful software that compromises the system's security and the privacy of its users. Thus, it's crucial to use only reputable sources and vendors when downloading, installing, or executing unsigned apps.

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Set a filter to only display the data that satisfies a certain criterion and freeze the header rows. This enables autonomous work on each analyst's portion of the data without interfering with other analysts' projects.

Just the rows that match the filter criteria will be visible when data is filtered; all other rows will be hidden. The filtered data can then be copied, formatted, printed, etc. without having to first sort or move it.

Header rows and columns might be frozen. Choose Freeze Header Rows or Freeze Header Columns from the pop-up choices below Headers & Footer.

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Answer: False

Explanation:

for loop can also be used to iterate over strings.

It is false that you cannot use a for loop to iterate over the characters in a string.

This is because you can indeed use a for loop to iterate over the characters in a string. The syntax of a for loop is such that it can be used to loop over any iterable object, including strings. A string is a sequence of characters. In Python, strings are represented using quotes, either single or double. You can use a for loop to loop over all the characters in a string, one at a time, in the order they appear. For instance, consider the following code snippet: for char in "Python":  print(char)The code will iterate over all the characters in the string "Python" one at a time and print them to the console. Therefore, you can use a for loop to iterate over the characters in a string.

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Answer:

Procedural

Explanation:

To indicate that the only allowable values for the Client Type field are MED, DNT, and LAB, enter =MED or =DNT or =LAB in the Validation Rule property box.

A validation rule is a criterion that you define to restrict input to a table field or to a control on a form. Validation rules allow you to restrict the type of data entered into a field or a control. They are used to ensure that the data entered conforms to some predetermined standards.

In MS Access, the purpose of Validation Rule is to validate the data entered by the user in the fields or control on the form. It provides an additional layer of control over data entry, which helps to ensure that data entered into a field or control meets specific criteria. Validation rules in MS Access are used to restrict the type of data entered in a field or control, ensure that the data entered meets some predetermined criteria, and provide feedback to the user if the entered data doesn't meet the requirements.

Enter the below syntax in the Validation Rule property box:IN("MED","DNT","LAB")Syntax: IN("allowable value 1", "allowable value 2", ..., "allowable value n")Example: IN("Active", "Inactive")

Here are the steps to create a validation rule in MS Access: Firstly, open the MS Access database in which you want to add a validation rule.After that, open the table, form, or query in which you want to add the validation rule. Select the field or control in which you want to add the validation rule.Click the “Design” tab on the ribbon.Now click on the "Validation Rule" property from the field or control properties window.Enter the validation rule syntax into the validation rule property box.Close the field or control properties window.

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The given statement "Ensuring that every value of a foreign key matches a value of the corresponding primary key is an example of a referential integrity constraint." is true becasue it correctly illustrates the cocept of  referential integrity.

Referential integrity is a database concept that ensures that relationships between tables remain consistent. One way to enforce referential integrity is by defining a foreign key in a child table that matches the primary key of the parent table. This ensures that every value of the foreign key in the child table matches a value of the corresponding primary key in the parent table, thereby maintaining the integrity of the relationship between the tables.

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True. Researchers work hard to theoretically underpin and justify their coding category study since poorly designed and implemented procedures might lead to the production of useless data.

Coding categories refers to the division of data into various categories or themes in accordance with predetermined standards or patterns that appear in the data. This method is frequently applied in qualitative research to find and group recurrent themes, patterns, or concepts in a data set. A crucial phase in the research process is the creation of coding categories since it ensures that the data is appropriately recorded, evaluated, and interpreted. Researchers must carefully examine the data to find pertinent themes or patterns, which are then put into theoretically-based categories that are pertinent to the study issue.

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The given statement "The way to measure the resistance of a hash algorithm to cryptanalysis is to compare its strength to the effort required for a brute-force attack" is True.

Cryptanalysis is the art of deciphering encrypted messages, analyzing cryptographic protocols, and cracking codes. Cryptanalysis may be thought of as the opposite of cryptography, which is the study of making encrypted messages and designing secure communication protocols.

The strength of a hash algorithm can be measured by comparing it to the effort required for a brute-force attack. To demonstrate this, the difficulty of finding a message with a given hash value may be compared to the difficulty of finding a message with that same hash value using brute-force methods.

In general, a hash algorithm is considered to be secure if it is computationally infeasible to discover the message that generated a given hash value, even though hash values for a huge number of possible messages may have been created. The length of the hash value produced by the algorithm is also an indicator of its security.

The length of the hash value should be proportional to the size of the input, and the security of the hash algorithm is proportional to the length of the hash value. It's also important to remember that the algorithm must be quick to compute, as performance is often a critical factor.

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Answer:

Here is an HTML code you can use.

If you go to any HTML editor. You will see this clearly works. Hope this helps lad. This also includes your bonus challenge.

<!DOCTYPE html>

<html>

<head>

<title>March Calendar</title>

<style>

 table {

  border-collapse: collapse;

 }

 td, th {

  border: 1px solid black;

  padding: 10px;

  text-align: center;

  font-size: 20px;

  font-weight: bold;

 }

 th {

  background-color: #ddd;

 }

 td {

  height: 100px;

  vertical-align: top;

 }

</style>

</head>

<body>

<h1>March Calendar</h1>

<table>

 <thead>

  <tr>

   <th>Sun</th>

   <th>Mon</th>

   <th>Tue</th>

   <th>Wed</th>

   <th>Thu</th>

   <th>Fri</th>

   <th>Sat</th>

  </tr>

 </thead>

 <tbody>

  <tr>

   <td></td>

   <td></td>

   <td></td>

   <td></td>

   <td></td>

   <td>1</td>

   <td>2</td>

  </tr>

  <tr>

   <td>3</td>

   <td>4</td>

   <td>5</td>

   <td>6</td>

   <td>7</td>

   <td>8</td>

   <td>9</td>

  </tr>

  <tr>

   <td>10</td>

   <td>11</td>

   <td>12</td>

   <td>13</td>

   <td>14</td>

   <td>15</td>

   <td>16</td>

  </tr>

  <tr>

   <td>17</td>

   <td>18</td>

   <td>19</td>

   <td>20</td>

   <td>21</td>

   <td>22</td>

   <td>23</td>

  </tr>

  <tr>

   <td>24</td>

   <td>25</td>

   <td>26</td>

   <td>27</td>

   <td>28</td>

   <td>29</td>

   <td>30</td>

  </tr>

  <tr>

   <td>31</td>

   <td></td>

   <td></td>

   <td></td>

   <td></td>

   <td></td>

   <td></td>

  </tr>

 </tbody>

</table>

<h2>Events:</h2>

<ul>

 <li>March 17 - St. Patrick's Day</li>

 <li>March 20 - First day of Spring</li>

</ul>

</body>

</html>

The calendar for this month using HTML is mentioned below:

<!DOCTYPE html>

<html>

<head>

 <title>Calendar</title>

 <style>

   table {

     border-collapse: collapse;

     width: 100%;

   }

   th, td {

     border: 1px solid black;

     text-align: center;

     padding: 8px;

   }

   th {

     background-color: #ccc;

   }

 </style>

</head>

<body>

 <h2>Calendar</h2>

 <table>

   <tr>

     <th>Sunday</th>

     <th>Monday</th>

     <th>Tuesday</th>

     <th>Wednesday</th>

     <th>Thursday</th>

     <th>Friday</th>

     <th>Saturday</th>

   </tr>

   <tr>

     <td></td>

     <td></td>

     <td></td>

     <td></td>

     <td>1</td>

     <td>2</td>

     <td>3</td>

   </tr>

   <tr>

     <td>4</td>

     <td>5</td>

     <td>6</td>

     <td>7</td>

     <td>8</td>

     <td>9</td>

     <td>10</td>

   </tr>

   <tr>

     <td>11</td>

     <td>12</td>

     <td>13</td>

     <td>14</td>

     <td>15</td>

     <td>16</td>

     <td>17</td>

   </tr>

   <tr>

     <td>18</td>

     <td>19</td>

     <td>20</td>

     <td>21</td>

     <td>22</td>

     <td>23</td>

     <td>24</td>

   </tr>

   <tr>

     <td>25</td>

     <td>26</td>

     <td>27</td>

     <td>28</td>

     <td>29</td>

     <td>30</td>

     <td>31</td>

   </tr>

 </table>

</body>

</html>

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A. The command to rename the file from "report.txt" to "final_report.txt" is ren report.txt final_report.txt.

The command that Mary should use to rename her report.txt file to final_report.txt is

option A: `ren report.txt final_report.txt`.

In DOS (Disk Operating System), `ren` command is used to rename one or more files. In addition to renaming a single file, the `ren` command can also rename multiple files with a single command.

The syntax of the `ren` command is as follows:

ren [drive:][path][source_filename] [destination_filename]

The `ren` command requires two arguments:

source_filename and destination_filename.

To rename the source file to the destination file, type the name of the source file followed by the new name of the file to be created. The destination file name should have the same file extension as the original file.

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The correct option is: Traffic cannot be sent to two different switches through the same EtherChannel link.

Let's discuss more below.

An EtherChannel is a connection between two switches or devices, that are grouped together into a single virtual link to provide a larger bandwidth and redundancy. The administrator tried to create an EtherChannel between S1 and the other two switches, which can be done by bundling multiple links to increase the link bandwidth and to provide redundancy.

But, in the given scenario, the administrator was not able to create an EtherChannel successfully because traffic cannot be sent to two different switches through the same EtherChannel link. Therefore, option C is the correct answer.

Traffic cannot be sent to two different switches through the same EtherChannel link.

Traffic can only be sent to two different switches if EtherChannel is implemented on Layer 3 switches.

Traffic cannot be sent to two different switches, but only to two different devices like an EtherChannel-enabled server and a switch.

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The following does not promote readability is Orthogonality.

Out of the options given, code reusability does not promote readability. When it comes to programming, readability is important. It is the ease with which a programmer can read, understand, and modify code.

Good readability leads to better code maintainability, which makes it easier to fix errors and add new features. So, it is important for a programmer to do Type checking to ensure that code is easier to read, as the programmer knows exactly what data types are being used.

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When a stream slows abruptly as it enters the still water of a lake or ocean, the sediment settles out to form a nearly flat landform called a delta.

What is a delta?

A delta is a landform composed of sediment deposited where a river flows into an ocean or lake. Deltas are created when a river loses speed and, as a result, drops its sediment load. Deltas are formed when sediment accumulates in the still waters of rivers, estuaries, or oceans, such as a lake or sea, and forms a mound or fan shape over time. Deltas are typically divided into three areas: the lower delta plain, the upper delta plain, and the pro-delta.

Here are some characteristics of a delta: It is a landform that extends into the water.It is typically shaped like a fan or a bird's foot.The river that feeds it regularly changes its course.The materials that are deposited are generally composed of sand, silt, and clay.

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Your question is incomplete but probably the complete question is :

A stream also slows abruptly when it enters the still water of a lake or ocean. The sediment settles out to form a nearly flat landform called this, which forms and grows with time where a stream deposits its sediment as it flows into a lake or the sea.

The given statement "To determine the network ID of an IP address, computers use a logical AND operation between the IP address and the subnet mask." is true becasue when a computer receives an IP address and a subnet mask, it can determine the network ID by performing a logical AND operation between the two values.

The subnet mask is a binary value that has a 1 in each bit position corresponding to the network bits in the IP address and a 0 in each bit position corresponding to the host bits. By performing a logical AND operation between the IP address and subnet mask, the computer effectively "masks out" the host bits and only retains the network bits, which results in the network ID. This information is essential for routing data between networks in a TCP/IP-based network.

You can learn more about logical AND operation  at

https://brainly.com/question/13524798

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