If a host receives a frame with a destination mac address it is unfamiliar with, it will discard the frame. The definition of a frame is a union of protocol data.
the OSI model for computer networking's data link layer. Before the information is sent to the physical layer, these frames are the result of the last layer of encapsulation. In computer networking and telecommunication, a frame is a digital data transmission unit. A frame in packet switching systems is just a straightforward container for a single network packet. A repeating structure supporting time-division multiplexing in other telecommunications systems is known as a frame. Interconnected computing equipment that may share resources and exchange data are referred to as being in a computer network. These networked gadgets function with a system.
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the statement combines rows from two queries and excludes duplicates. a. union b. union all c. intersect d. minus
The statement that combines rows from two queries and excludes duplicates is a. union
What is union, union all, intersect, and minus?
Union is the statement of set operator in SQL to combine two queries but it will record the value only once, so any duplicate value will be removed.
Union all is the statement of set operator in SQL to combine two queries but it will record all value, so any duplicate value also recorded.
Intersect is the statement of set operator in SQL to combine two queries but it will record the value if the value is in the two queries.
Minus is the statement of set operator in SQL to combine two queries but it will remove second query's results from the output if they are also found in the first query's results.
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name five technological innovations that helped to increase transoceanic interconnections.
5 technological innovations that helped to increase transoceanic interconnections are:
Records of wind patternsMaps of the starAstrolabeMagnetic CompassCarvelWhat is technological innovation?An expanded definition of innovation is technological innovation. Although innovation is a fairly well-defined concept, many people—especially those in the academic and business worlds—understand it to mean different things.
Innovation is the addition of extra steps to creating new services and products for the market or the general public that satisfy unmet needs or address issues that have not been solved in the past.
Instead of addressing the entire organization's business model, technological innovation, on the other hand, focuses on the technological aspects of a product or service. It is crucial to make clear that innovation is not solely a product of technology.
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Calista wants to add a screentip to a hyperlink she inserted into a cell. she selects the cell with the hyperlink, then presses a certain combination of buttons, then selects screentip, types in a message, clicks ok, then clicks ok again to save the link. which of these combination of buttons must she have pressed during this procedure?a. Alt + F4b. Ctrl + Zc. Alt + Ad. Ctrl + K
The hyperlink Calista entered into a cell needs a screentip added to it. She clicks Ctrl + K after choosing the cell with the hyperlink. a button combo, picks screentip, enters a message, clicks ok, and then clicks ok again to preserve the link.
Which of the following clicks would you choose to delete a hyperlink from a cell?Then, from the right-click menu, choose the option to remove the hyperlink by using the mouse to right-click on the selected cell(s) (or Remove Hyperlinks if you have more than one cell selected).
What key combination will you use to move between these two workbook windows?Use the keyboard shortcut Ctrl+Tab to quickly navigate between spreadsheets.
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what is the most likely reason that this user's computer cannot communicate outside the local network? why?
The most likely reason that this user's computer cannot communicate outside the local network is the PC is unable to connect to a DHCP server.
Simply by using the same network, Windows enables you to connect to other people's computers quickly. You may quickly transfer files between computers linked to the same network once this process has been set up. However, occasionally the procedure just doesn't finish, and you find yourself suddenly unable to see or connect to other machines on the same network.
This problem can be fixed in a variety of intriguing ways and appears in all Windows OS versions. Even while this seems like the most obvious IT solution, users have addressed problems in this way, though it occasionally required more than one restart. Restarting the machine resolved the issue caused by some corrupt pieces in the chain that runs this procedure.
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which term is defined as an interrelated and harmonized collection of components and methods that transform inputs into outputs?
The term that is defined as an interrelated and harmonized collection of components and methods that transform inputs into outputs is known as a system.
What is Transformation in computers?In computers, transformation may be defined as a type of process through which any activity or group of activities takes one or more inputs, transforms and adds value to them, and provides outputs for customers or clients.
According to the context of this question, a system within a set of computers must perform a sequential function in order to interrelate and harmonize the collection of components and methods that transform inputs into outputs.
Therefore, the term that is defined as an interrelated and harmonized collection of components and methods that transform inputs into outputs is known as a system.
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which command will start the process to bundle two physical interfaces to create an etherchannel group via lacp?
The right choice is the GigabitEthernet interface range command, which defines two interfaces for the EtherChannel group.
You can simultaneously configure several interfaces with the interface range command. Switches have numerous interfaces, and the same settings are frequently applied to various interfaces, making the interface range command very helpful.
While in interface configuration mode, each command you enter that contains the range keyword is immediately put into action. After you leave interface mode, the commands are not batch-executed. It's possible that some instructions won't be carried out on all of the interfaces in the range if you leave interface configuration mode while they're being done. Before leaving interface configuration mode, wait until the command prompt reappears.
Only VLAN interfaces built with the interface vlan command (the display running-configuration command) are compatible with the interface range command.
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Which of the following is not a type of inheritance? (a) Multiple (b) Multilevel (c) Distributive (d) Hierarchical
D: Distributive is not a part of an inheritance
there is a definition for all other inheritance
there are total of four types of inheritance
1. Single Inheritance: Single inheritance allows a derivate class to inherit properties of one parent class, and this allows code to reuse.
2. Multiple Inheritance: If a class can be created from multiple base classes, this kind of Inheritance is known as multiple Inheritance. When there is multiple Inheritance, each of the attributes that are present in the classes of the base has been passed on to the class that is derived from it.
3. Multilevel inheritance: it is the features that are part of the original class, as well as the class that is derived from it, are passed on to the new class. It is similar to a relationship involving grandparents and children.
4. Hierarchical Inheritance: If multiple derived classes are created from the same base, this kind of Inheritance is known as hierarchical inheritance. In this instance, we have two base classes as a parent (base) class as well as two children (derived) classes.
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what statement can cause immediate exit from the try block and the execution of an exception handler
Raise statement causes immediate exit from the try block and the execution of an exception handler. The exception handler prints the argument passed by the raise statement that causes execution to occur. It's important to note that the normal flow of code is not obscured by new if-else statements.
How does raise statement works?The raise statement stops normal execution of a PL/SQL block or subprogram and transfers control to an exception handler. Raise statements can raise predefined exceptions, such as ZERO_DIVIDE or NO_DATA_FOUND, or user-defined exceptions whose names you decide. Raise statement can be applied to Procedural Language/Structured Query Language (PL/SQL)
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when configuring nat, the internet facing interface is considered to be what? group of answer choices
The correct response is D. outside. The Internet must be seen as an external interface for network address translation (NAT) to function as intended.
Network address translation (NAT) modifies the network address information in packets' IP headers as they pass through a traffic routing device to map one IP address space into another. When a network was moved or when the upstream Internet service provider was changed but was unable to route the network's address space, the technique was initially employed to avoid the requirement to give new addresses to every site. In light of the IPv4 address exhaustion, it has grown to be a widely used and crucial technique for global address space preservation. A NAT gateway's single Internet-routable IP address can be utilized for the entire private network. NAT solutions may differ in their specific behaviour in different addressing scenarios and their impact on network traffic because NAT modifies the IP address information in packets. Vendors of equipment with NAT implementations do not frequently document the nuances of NAT behaviour.
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when configuring nat, the internet facing interface is considered to be what? group of answer choices
A . local. B . inside. C . global. D . outside
which type of software language would a person most logically want to use? which type of software language would make a computer perform the best/fastest?
Answer:
The type of software language a person would most logically want to use depends on a number of factors, such as the person's level of expertise, the type of application they are developing, and the platform they are working on. Some common types of software languages include:
High-level languages: These languages are designed to be easy to read and write, and they are typically more abstract than low-level languages. Examples include C++, Java, and Python.
Low-level languages: These languages are closer to the machine language of a computer, and they are typically more difficult to read and write. Examples include Assembly and machine code.
In terms of performance, low-level languages are generally considered to be faster than high-level languages because they are closer to the machine language of a computer and can be executed more efficiently. However, high-level languages are often easier to work with and can be more versatile, so the choice of language ultimately depends on the specific requirements of the application.
Explanation:
you receive a call from a user who is having issues connecting to a new vpn. which is the first step you should take?
Determine the signs and possible reasons. Although a user can ping the local router and the web server, they are unable to access the server's web page.
What should you do next in the Network+ troubleshooting paradigm as soon as you have a fix in place? Check the outcome. What should you do just before choosing the most likely source of a problem in the Network+ troubleshooting model? Identify the changes. It is often delay resulting from a capacity problem when wireless customers complain that the network is sluggish (latency) or that they are losing their connection to apps during a session. 4. desks for work. If they are unable to, the server or network connection may be at fault. Determine the issue. Create a likely cause theory. To ascertain the cause, test the theory. Make a plan of action to tackle the issue and put the solution into practice.
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what is the intersection of a row and column called? it is denoted by the column letter and row number. for example, e7.
When a row and a column intersect, a cell is formed. A cell is identified by a letter and a number that corresponds to a specific location within the spreadsheet.
What is a Spreadsheet?
A spreadsheet or worksheet is a file made up of rows and columns that can be used to efficiently sort, organize, and arrange data as well as calculate numerical data. The ability of a spreadsheet software program to calculate values using mathematical formulas and data in cells is what distinguishes it. Creating an overview of your bank's balance is one example of how a spreadsheet can be used.
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hp delays customization of its laser printers as long as possible. this is an example of .
The customization of Hewlett-laser Packard's printers is postponed as long as feasible. Postponement like this is exemplified.
What is meant by postponement?When an activity is postponed to the furthest point in time, for instance when a customer's demand is satisfied, this is referred to as postponement.
By delaying the business investment in goods and services, postponement is one sort of business strategy that aids in maximizing different types of advantages and risk in the enterprise.
In the supply chain management concept, postponement is crucial since it aids in the production of many generic product kinds.
The customization of the laser printer was delayed by Hewlett-Packard, and this is an example of a postponement, according to the query.
Therefore, the correct answer is Option B. postponement.
The complete question is:
Hewlett-Packard delays customization of its laser printers as long as possible. This is an example of which of the following?
A. standardization
B. postponement
C. timely customization
D. backward integration
E. vendor-managed inventory
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malek is explaining various malware types to new technical support personnel. he is explaining to them the various types of malware so that they can recognize them. what type of malware is a key logger?
Malek is describing several malware varieties to fresh tech support staff. He is educating them on the numerous varieties of malware so they would be able to identify it. Key loggers are spyware-type malware.
Malware is a general word for viruses, trojans, and other damaging computer programmes that threat actors use to infect systems and networks and access sensitive data. Malware is software that is meant to obstruct a computer's regular operation.
A file or piece of code known as malware, often known as "malicious software," is typically distributed via a network and has the ability to steal information, infect computers, or perform nearly any other action the attacker desires. Additionally, there are numerous ways to attack computer systems because malware has so many variations.
For all dangerous software, the term "malware" is encompassing. Here are some examples of malware, a definition of a malware attack, and a list of malware distribution techniques:
Advertising-supported software Although certain types of adware might be seen as appropriate, others get access to computers without authorization and cause significant user disruption.
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assume the variable sales references a float value. write a statement that displays the value rounded to two decimal points.
With an assumption that the variable 'sales' refers to a float value. The statement 'print (format(sales, '.2f'))' will display the value of 'sales' rounded up to two decimal points.
A float is a data type to store numbers with decimal points. Rounding a value up to two decimal places means that after the decimal point only two digits are required. This is the requirement of the given question in which you are asked to a write statement for rounding a variable 'sales' value up to two decimal places. To serve the purpose, the required statement is 'print (format(sales, '.2f'))' .
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to be useful, information systems should . a. use command line user interfaces b. not use rumors, unconfirmed reports, and stories c. generate raw data, which can be used for decision making d. produce information in different formats
Option b is correct. Information systems shouldn't rely on rumours, unverified reports, and stories if they want to be effective.
When people hear the phrase "information system" for the first time, they frequently assume it refers to some kind of programme that stores information or something similar. The name does really sound that way. An information system, however, is much larger than that.
A combination of hardware, software, and communication networks make up an information system, which is used to gather meaningful data, particularly within an organisation. Information technology is used by many firms to carry out and manage operations, engage with customers, and outperform rivals.
Programs - System software and application software are the two categories of software available. An operating system known as the system software allows users to handle a computer through a graphical user interface (GUI) while also managing the hardware, programme files, and other resources.
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which ping commands will verify that your local tcp/ip interface is working? (choose all that apply.)
B, D. The unique IP address assigned to the local TCP/IP interface is 127.0.0.1. The local interface has been given the hostname localhost. As a result, you may check if the local interface is operational by pinging the local interface's IP address or hostname.
A group of communication protocols called TCP/IP, or Transmission Control Protocol/Internet Protocol, are used to connect network devices on the internet. Additionally, a private computer network uses TCP/IP as its communication mechanism (an intranet or extranet). TCP/IP controls how information is transmitted and received between sources and destinations in the form of packets. So, in a nutshell, TCP specifies network communication and how to transfer data in the form of packets. Port numbers serve as universal standards for designating particular processes or categories of network services. TCP ports enable standardized communication between devices, much like how you would negotiate where you would be shipping out of and where you would have it arrive before sending something overseas.
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6. Which ping commands will verify that your local TCP/IP interface is working? (Choose all that apply.)
A. ping 204.153.163.2
B. ping 127.0.0.1
C. ping localif
D. ping localhost
E. ping iphost
write the cell rxn for the combination of these half cell reactions that leads to the largest posiive cell emf and calculate the value
The cathode reaction's standard reduction potential is known as the standard cell potential, or Ecirc cellE cell.
Ecirc red E red (cathode), less the typical anode reaction reduction potential, Ecirc red E red (anode): "Ecirc cell" is equal to "Ecirc red" (cathode) - "Ecirc red" (anode) E red (cathode) = E cell (anode).
How are half cell reactions written?The following gives an example of a half cell reaction at the anode: Zn(s)→Zn2+(aq)+2e−. The reaction causes the zinc metal to lose two electrons, forming the Zn2+ ion.
What are each reaction's cell reaction and half-cell reaction?An oxidation process, where electrons are lost, or a reduction reaction, where electrons are gained, are both examples of half-cell reactions. The reactions take place in an electrochemical cell in which oxidation at the anode results in the loss of electrons.
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the ________ html5 element is used to configure the main navigation area on a web page.
The answer is nav.
The nav HTML5 is used to configure the main navigation area on a web page.
The nav HTML5 element is used to define a section of navigation links. It is commonly used to provide a navigation menu or a site map. The nav element also organizes other elements on a page, such as a footer.
HTML5 is a markup language used for structuring and presenting content on the (WWW) World Wide Web. It currently exists in two standardized forms: HTML 5.2 as of December 2017 and HTML 5.3 as of June 2019. HTML5 is intended to subsume not only HTML 4 but XHTML as well. The new features of HTML5 include specific functions for multimedia, graphics, styling, and more.<nav> describes as New Tag: Specifies a section of the document intended for navigations.
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So, my mom was trying to unlock her old iPhone 7, and it said connect to iTunes, and so I did, following a tutorial, but when I opened the phone again, it said in white letters:iPhone is disabled, connect to iTunes. Now, It cant even go into recovery mode(Volume down and side button on iPhone 7). Unfortunately, because it is quite old, its not on the Find My app, and I don't know any other way to fix it. Can anyone help me?
Answer:
i would either go to the apple store, or try connecting it to your computer
Explanation:
Answer:
You can either call or go to your nearest apple store, or hit a hard reset on your iphone. I suggest going to their website for help because the iphone is an older model.
Please mark me as brainliest if this works for you.
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in multiple inheritance, if some members in parent classes overlap, what classes must be defined as virtual?
In multiple inheritance, if some memebers of the base classes or parent classes, then the base or parent class must be defined as a virtual class and access into child class as a public virtual class.
In multiple inheritance, sometimes the members of the base classes inherited into multiple classes which create ambiguity or confusion. for example, if a base class A is inherited in child class B, and B class is inherited by C, and class D is inherited by both B and C. Then it makes the ambiguity in accessing the members of class. for example, in this scenario, in class D, B and C both inherited by A and there members function duplicated.
#include <iostream>
using namespace std;
class A {
public:
int number;
showNumber(){
number = 10;
}
};
class B : public virtual A {
};
class C : public virtual A {
};
class D : public C, public B {
};
int main(){
//creating class D object
D object;
cout << "Number = " << object.number << endl;
return 0;
}
The above program print 10.
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what is the best reason to use an unsorted vector of key-value pairs over an open addressing hash table
A hash table or hash map is a type of data structure that links keys and values.
A hash table is a collection of lists of elements in Java. Buckets are the names given to these lists.
It connects the keys and values. Java's "Hash Table" class is in charge of creating hash tables. This class implements the map interface and derives from the dictionary class.
Here are a few of Java's Hash table's distinguishing characteristics:
It is an array whose individual elements are lists or buckets.
It has distinguishing qualities.
There is no such thing as a null key or null value in the hash table.
similar to a hash map but synced
Java Hash Table Class
This class is a part of Java's java.util package. Consequently, we must add one of the following statements to our application in order to incorporate the capabilities of the Hash Table class.
bring in java.util. *;
OR
bring up the Java.util.HashTable;
A general class declaration for the java.util package is provided below.
Hash Table type:
In this situation, K => type of mapped values V => the hash table's key types
The Hash Table class works properly thanks to the constructors that are used to build the class objects and the multiple operations or methods that are provided in the class.
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the phone company is having trouble where bad phone numbers keep appearing under different names. write a method that will return true if the parameter number is a value in nocallmap, otherwise return false.
Apply String. In addition to everything else, using integers prevents you from storing leading zeroes.
Int (too small), float, or double (too high chance of data loss - see below) are absolutely not appropriate; long or Big Integer may be (apart from the leading zeroes issue), but I'd personally choose String. If you choose, you can additionally save any dashes or spaces that the user input to make it simpler to remember the number. Regarding the "data loss" noted above, both float and double don't have enough accuracy; however, double might work if you're content with using no more than 16 digits. Apply String. In addition to everything else, using integers prevents you from storing leading zeroes.
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FILL IN THE BLANK. _____ also known as RESTRICT, yields values for all rows found in a table that satisfy a given condition
SELECT in an SQL command used to retrieve rows from a table that match a given condition.
SELECT also known as RESTRICT, yields values for all rows found in a table that satisfy a given condition.Retrieving Specific Data from a Table Using SELECT (RESTRICT)SELECT is an SQL command used to retrieve rows from a table that match a given condition. It is also known as RESTRICT, as it restricts the result set to only those rows that satisfy the condition. By using SELECT, a query can be written that filters the data of a table and only returns rows that meet certain criteria. This is useful for finding specific information from a large dataset.
The syntax for SELECT is straightforward: SELECT column_name FROM table_name WHERE condition;This statement will return all the rows from the specified table that meet the given condition.
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i accidentally reset xfinity router back to factory settings. now how do i get it back to the way it was?
When your gateway is factory reset, your WiFi name and password are restored to their original default positions. You'll need to set up a unique WiFi name and password for your home network if prompted, then use this information to reconnect devices to it.
Is it a good idea to factory reset?
While it's true that factory resets might occasionally be advantageous, there are certain unnoticed adverse effects that should also be considered. A factory reset frequently causes more harm than good, rendering data unsecure while giving the appearance of security.
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in order to preserve the integrity of any forensic evidence, what should be done before analyzing a hard drive that has been compromised by a security attack?
Investigators must first image the evidence from a source before they can start examining it. An analyst builds a bit-for-bit replica of a drive through the forensic method of imaging.
A hash of the evidence should be produced before, during, or after an acquisition in an effort to demonstrate that it was not tampered with. To build an MD5 hash of the evidence/input file under Kali Linux, use the md5sum command and the device's path. The chain of custody process begins at this point. In order to maintain the integrity of the data and evidence gathered, it entails identification, labeling, recording, and the collecting of data from all relevant sources that may be available.
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a 2d double array is declared and initialized to track the terrain of a city park. each value in the 2d array represents the height of a particular latitude and longitude above sea level. the 2d grid represents the map of the part and each entry in the grid represents the height. with this in mind, the columns are positioned to represent longitude in the 2d array and latitude is represented by each row in the 2d array. the creator of this 2d array would like to look at the height of the city park along the longitude 100.0 - which traversal method would make the most sense in order to do so?
Column-Major Order traversal method would make the most sense in order to do so.
What is a 2d array?
Arrays inside of arrays are what are known as two-dimensional arrays. 2D arrays, which are made up of rows and columns, are constructed as metrics. To create a database that resembles the data structure, 2D arrays are frequently used. A one-dimensional array keeps track of a single list of different elements with related data types. An array of different arrays, a list of different lists, or an array of different one-dimensional arrays are all stored in a two-dimensional array. It displays a list of several data objects as a representation. Objects can also be stored in a two-dimensional array, which is useful for programming diagrams that include a "grid" or "board."To learn more about 2d arrays refer to:
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true or false. according to the book, in the early days of computer code writing, amateur programmers were creating open source software on the principle that programming was a collective effort.
True,The book claims that amateur programmers were producing open source software in the early days of writing computer code on the basis that programming was a collaborative endeavour.
Beginning in the 1970s, Microsoft put a stop to a lot of this activity by turning software development into a business where users had to pay for both the software and its regular updates. As a reliable substitute for pricey commercial programs, Linux helped to revive much of this activity.
software, or commands that instruct a computer, All of the programmes, processes, and routines involved in running a computer system are collectively referred to as software. To distinguish these instructions from hardware, or the actual parts of a computer system, the word was created. Programs, sometimes known as software programmes, are a collection of instructions that tell a computer's hardware how to carry out a task.
Application software and system software are the two main categories of software. In addition to operating systems, system software also manages peripherals like monitors, printers, and storage devices as well as the core operations of computers. In contrast, application software, which can be referred to as any programme that processes data, instructs the computer to carry out user-given orders.
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data packets are used to send information across the internet. how does the receiving computer know that it has all of the information to display for you?.
This is accomplished by having the destination computer transmit acknowledgement data packets to the source computer on a regular basis, letting the source computer know how much of the message it has received and decoded.
How are data packets sent?A network packet operates by selecting the most efficient path to its destination. All of the other packets in a message follow this path, which increases the efficiency of network traffic in terms of distributing a load among various pieces of hardware.
How do packets know how to reach where they're going?When a router gets a packet, it checks its routing table to see if the destination address points to a device on one of the networks to which it is connected, or if another network must be used to send the message.
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a mobile device is exhibiting unusual symptoms: there are pops, creaks, heat, wobbling when laid on a flat surface, and even gaps between the frame and screen. what do you expect the problem to be?
Unusual symptoms are displayed by a mobile device, including pops, creaks, heat, wobbling when placed on a flat surface, and even gaps between the frame and screen. You assume a bulging battery is an issue.
A battery is a piece of hardware that provides power to a gadget, allowing it to function without an electrical outlet. Depending on how much power it needs, batteries can frequently keep a laptop computer running for several hours. Many modern high-end electronics, such as laptop computers, and cell phones have rechargeable batteries, which let users recharge them when they run out of power. An example laptop battery with a close-up of the battery rating is shown in the image below.
Computers use one of three different types of batteries. First is the backup battery, often known as the CMOS battery, which stores your computer's settings, including the time and date.
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