For some reason my code give m a error for when I try and grab the byte from this section. And I don't know what the problem is.
static byte[] EncryptStringToBytes_Aes(string plainText, byte[] Key)
{
byte[] encrypted;
byte[] IV;
using (Aes aesAlg = Aes.Create())
{
aesAlg.Key = Key;
aesAlg.GenerateIV();
IV = aesAlg.IV;
aesAlg.Mode = CipherMode.CBC;
var encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);
// Create the streams used for encryption.
using (var msEncrypt = new MemoryStream())
{
using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
{
using (var swEncrypt = new StreamWriter(csEncrypt))
{
//Write all data to the stream.
swEncrypt.Write(plainText);
}
encrypted = msEncrypt.ToArray();
}
}
}
var combinedIvCt = new byte[IV.Length + encrypted.Length];
Array.Copy(IV, 0, combinedIvCt, 0, IV.Length);
Array.Copy(encrypted, 0, combinedIvCt, IV.Length, encrypted.Length);
// Return the encrypted bytes from the memory stream.
return combinedIvCt;
You've formatted the first paragraph of a document. What button can you use to apply the formatting from the first paragraph to the next paragraph in the document? A. Cut B. Paste C. Copy D. Format Painter
A fitness tracker can be classified as a wearable computer. true
A layer 2 switch is used to switch incoming frames from a 1000base-t port to a port connected to a 100base-t network. which method of memory buffering would work best for this task?
Does the sticker list an automatic or manual transmission?
A. automatic
B. manual
C. It doesn't list the transmission.
scientist have observed many mysteries of plants True Or False
Answer:
true
Explanation:
Which of the statements below describe how to print a document?
Click on Print in the system tray.
Click on the Print icon at the top of the screen.
Select Print from the File menu.
Select Print from the Start menu.
Answer:
Select Print from the File menu
Explanation:
Other options listed are either impossible or a bit difficult to achieve. "Selecting Print from the File menu" not only allows for easy access, it also ensures that the target document is being printed without much effort. Many applications have a file menu from where certain processes could be accessed and done easily.
Hope this helps!
Answer:
a b d
Explanation:
By default, windows does not display ____________________ in windows explorer.
What type of address is the ip address 198.162.12.254/24?
The Internet Protocol address range 198.162.12.254/24 is classified as a Class C address.
The final "/24" denotes the subnet mask, which is what determines the network and host sections of the IP address. The network portion of a Class C network is represented by the first three octets (198.162.12), while the host portion is represented by the final octet (254) in the address.
The subnet mask "/24" indicates that the first 24 bits (3 octets) are used for the network component, leaving 8 bits (1 octet) for the host section. This leaves a total of 32 bits (6 octets) available. This permits a total of up to 254 different host addresses to exist within the network.
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Shakespeare’s complete works have approximately 3.5 million characters. Which is bigger in file size: Shakespeare’s complete works stored in plain ASCII text or a 4 minute song on mp3? How much bigger?
1 character in ASCII plain text occupies 1 byte of data; therefore 3.5 million of characters are 3.5 million of bytes. Since 1024 bytes = 1KB, we can use this equivalence to convert 3.5 million bytes to KB: (3500000 bytes)*(1KB/1024bytes) = 3417.97 KB. Now 1 minute of mp3 at 128 Kbps occupies 960KB, and since our mp3 is 4 minutes in length: 4*960= 3840KB. The difference between the two is 3840KB – 3417.97KB = 422.1KB, which means that the mp3 is larger than all the Shakespeare’s works by 422.1KB.
The size of MP3 depends on the file quality. The MP3 quality can be 128 Kbps or 256 Kbps or it may be at any other rate (320Kbps). The high quality MP3 (256 Kbps) have more size than the lower size MP3 (128 Mbps). Therefore, we cannot say whether 4 minutes MP3 is large or 3.5 million characters since MP3 is totally dependent on MP3 quality.
Further explanation:
Since the MP3 file size is dependent on the quality of the music. A high quality (256 Kbps) MP3 of 4 minutes has the size about 7.68 MB and on the other hand a comparatively low quality (128 Kbps) MP3 of 4 minutes has the size of about 3.84 MB. The size of plain text file is 3.5 MB (using M=10^6, not 2^20). The compression of much higher MP3 file is not commonly used for music.
Learn more:
1. A company that allows you to license software monthly to use online is an example of ?brainly.com/question/10410011
2. How does coding work on computers? brainly.com/question/2257971
Answer details:
Grade: Middle School
Subject: Computer Science
Chapter: Computer basics
Keyword:
MP3, file, quality, 256 Kbps, 128 Kbps, 512 Kbps, 320Kbps, high, low, minutes, ASCII code, music, text, size, Shakespeare, millions, MB, KB
What tool is used in combination with an impact wrench to install lug nuts on wheels?
A socket wrench is typically used with an impact wrench to install lug nuts on wheels, providing grip and mechanical advantage for proper tightening. A power drill may also be utilized with a socket adapter in some cases. It is crucial to use the right tools and techniques to avoid over-tightening or damaging the lug nuts.
Explanation:The tool that is commonly used in combination with an impact wrench to install lug nuts on wheels is a socket wrench. Socket wrenches provide the necessary grip and mechanical advantage to apply torque to the lug nuts, allowing for efficient tightening. When using an impact wrench, a specialized impact socket is typically used because it is made of a more flexible material that can withstand the high torque levels generated by the impact wrench without breaking.
In some cases, mechanics may also use a power drill with a socket adapter as an alternative, especially if an impact wrench is not available. However, an impact wrench combined with a socket wrench is the preferred method due to its efficiency and effectiveness in properly securing the lug nuts at the correct torque specification. It's important to mention that the use of incorrect tools or improper technique can lead to over-tightening or cross-threading of the lug nuts, which can be dangerous.
Additionally, when dealing with very tight bolts or lug nuts, mechanics sometimes slip a length of pipe over the handle of the wrench to gain extra leverage. This practice, known as a 'cheater bar', increases the torque applied to the bolt, making it easier to loosen. However, it's worth noting that this method is hazardous because it can lead to the bolt breaking under excessive force.
By default, the document has a (blank) margin on all four sides
What is the default margin width on all four sides of a document ?
Tables and spreadsheets can only be inserted into slides with blank layouts.
true or false
Answer:
false
Explanation:
im doing this assignment right now
In a spreadsheet, equations that use addition, subtraction, multiplication, and division operators, as well as values and cell references are called
Final answer:
Spreadsheet equations with operators and cell references are known as formulas. Formulas allow for dynamic updates and use the order of operations to perform calculations. Functions like PRODUCT simplify calculations and can be used within formulas.
Explanation:
In a spreadsheet, equations that use addition, subtraction, multiplication, and division operators, as well as values and cell references are called formulas. All formulas in spreadsheet software like Excel must start with an equal sign (=) and can include cell references, ranges of cell references, arithmetic operators, and constants. Using formulas with cell references, such as =D30-D60 to calculate Owner's Equity from Assets and Liabilities, allows for dynamic updates if any referenced cells change. This concept is known as Relative Cell Referencing.
When constructing formulas, it's important to remember the order of operations, often guided by mnemonics like PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction). Complex formulas can include multiple mathematical operations, cell ranges, and even nested functions, utilizing parentheses to clarify order if necessary. For example, =A3+B3*C3 will multiply B3 and C3 before adding A3, but in =(A3+B3)*C3, A3 and B3 are added first before multiplication.
Spreadsheet programs offer a variety of built-in functions, such as PRODUCT, to simplify common calculations. For instance, instead of multiplying cells directly, you can use =PRODUCT(B2, B3). Formulas should be entered carefully to avoid errors, and one way to reduce these errors is by using the pointing method, which involves clicking on cell references directly instead of typing them.
Recombinant DNA technology was very important because it _______.
Final answer:
Recombinant DNA technology is important because it "enables the production of proteins, revolutionizes the pharmaceutical industry, and contributes to advancements in medical treatments, agriculture, and sustainability".
Explanation:
Recombinant DNA technology, also known as genetic engineering, is important because it has several applications in various fields such as medicine, agriculture, and biotechnology. One of the major contributions of recombinant DNA technology is the production of proteins in large quantities. For example, insulin used to be obtained from animals before the advent of recombinant DNA technology. Now, bacteria can be engineered to produce human insulin, eliminating the need for animal sources.
In addition, recombinant DNA technology has revolutionized the pharmaceutical industry by allowing for the rapid production of high-quality recombinant DNA pharmaceuticals used to treat different human conditions.
Overall, recombinant DNA technology has significantly advanced our understanding and manipulation of genetic material, enabling us to develop new medical treatments, genetically modified crops, and sustainable raw materials.
Jane works in the sales department of a service company. She has impressive interpersonal skills and always turns up for work on time. Though she gets along well with her coworkers, she has a habit of constantly interrupting them during a conversation. Which core business etiquette, is missing in Jane?
Active listening. Jane's habit of interrupting coworkers indicates a lack of this core business etiquette, hindering effective communication.
The core business etiquette missing in Jane's behavior is active listening. Active listening involves fully concentrating on what is being said by the speaker, understanding the message, and responding appropriately. By constantly interrupting her coworkers during conversations, Jane fails to practice active listening.
Effective communication in the workplace requires not only expressing oneself but also listening attentively to others. Interrupting others can be perceived as disrespectful and can hinder effective communication. It may make coworkers feel undervalued or ignored, ultimately leading to a breakdown in teamwork and collaboration.
Additionally, active listening is essential for building rapport and trust with coworkers. When Jane interrupts her coworkers, she may come across as impatient or disinterested, which can negatively impact her relationships with them.
To improve her communication skills and demonstrate respect for her coworkers, Jane should work on practicing active listening. This involves giving her full attention to the speaker, refraining from interrupting, asking clarifying questions when necessary, and providing feedback to show understanding. By enhancing her active listening skills, Jane can contribute to a more positive and productive work environment.
I have a project on "USING ADVANCED FORMULAS". It wants me to make a spreadsheet to track payroll. I have no clue how to do this on docs. Can someone please help. Pm me for more info
Answer:
found this on another answer
Explanation:
Which network is a private network used for communications with business partners?
During which event were four Native American nations forcibly removed from their lands?
a. the gold rushB) the trail of tearsC) the westward journey of Lewis and ClarkD) establishment of the Underground Railroad
Suppose that a local area network requires seven letters for user names. lower- and uppercase letters are considered the same. how many user names are possible for the local area network?
Final answer:
Given that lowercase and uppercase letters are considered the same, there are 26 options for each of the 7 positions in a username. Thus, the total number of possible usernames is 26^7, which equals 8,031,810,176.
Explanation:
The question involves calculating the number of possible usernames a local area network can have given certain constraints. Since lowercase and uppercase letters are considered the same, and the username requires seven letters without considering numbers, dots, or underscores, we'll only consider the 26 letters of the alphabet. Therefore, for each of the seven positions in the username, there are 26 possibilities.
The total number of possible usernames can be calculated by raising the number of possible letters (26) to the power of the length of the usernames (7), which is 26^7.
This gives us a total of 8,031,810,176 possible usernames for the local area network.
Why are rules required for a number system to be useful?
Answer
This is because without them no one would know how much each symbol represents, and no one would be able to decipher the message.
Explanation
Number system is a way to represent numbers. It is a writing system for expressing numbers; that is, a mathematical notation for representing numbers of a given set, using digits or other symbols in a consistent manner.
In computing or in a computer number systems are the techniques which represents numbers in the computer system architecture where every value that you are saving or getting into/from computer memory has a defined number system.Computer architecture supports . Binary number system,Octal number system and Decimal number system.
Rules are required for a number system because computers relay on number system and its Basics of Computers - Number System. The method to represent and work with numerals is called number system. Decimal number system is the most commonly used number system which is used in our daily lives but computers do not understand this system. Some of popular number systems that computers consists are binary number system, octal number system, hexadecimal number system, etc.
Further Explanation:
⦁ Computers uses different number systems, that is why we have different rules for every different number systems, for every number system to be understandable to computers, we clearly need to define specific rules to follow for computation.
⦁ There are four main types of number systems, Decimal, Binary, the Octal and the Hexadecimal.
⦁ Binary Number System: An example of basic number system that computer uses is binary number system, based on number system of 2 digits (base two), which is 0 and 1. Its considered as perfect numbering system for computers and computers relay on this number system.
⦁ Decimal Number System: is a base 10 number system, which is consists of 10 digits from 0 to 9, that w use in our daily lives, This means that any numerical entity can be represented using these 10 digits. Decimal number system consists of ten single-digit numbers.
⦁ The Octal Number System: The octal numeral system defined as the base-8 number system, which uses the digits 0 to 7. Octal numerals can be made from binary numerals, it is made by grouping consecutive binary digits into groups of three (start from the right to left).
Answer details
Grade: High School
Subject: Computer Science and Technology
Chapter: Binary Mathematics
Keywords: number systems, binary mathematics, binary number system, octal number system, decimal to binary conversion etc
In the late 1980s, which wide area network (wan) technology became one of the standard methods of connecting business computers and networks over long distances? frame relay decnet appletalk token ring
Which device is a general-purpose computing device?
What is diffie-hellman most commonly used for?
Final answer:
The Diffie-Hellman algorithm is primarily used for secure key exchange, allowing two parties to establish a shared secret over an insecure channel which can be used for encrypted communication. It relies on the difficulty of solving the Diffie-Hellman problem and is fundamental to many cryptographic protocols.
Explanation:
The Diffie-Hellman algorithm is most commonly used for secure key exchange over a public channel in the field of cryptography. This method enables two parties to create a shared secret key, which can then be used for secure data encryption and decryption. The process involves each party generating a private key and a public key component, followed by an exchange of the public key components. The clever part of Diffie-Hellman is that despite the public exchange, eavesdroppers cannot easily calculate the agreed-upon secret key. Each party then uses its private key together with the other party's public key to compute the identical shared secret.
The security of the Diffie-Hellman algorithm relies on the difficulty of calculating discrete logarithms in a finite field, which is known as the Diffie-Hellman problem. It's a foundational technique in creating secure communications, laying the groundwork for various cryptographic protocols, such as the establishment of SSL/TLS connections which are ubiquitous in securing web-based transactions.
The internal area of 2-inch IMC is
A. less than the internal area of 2-inch EMT.
B. greater than the internal area of 2-inch rigid metal conduit.
C. the same as the internal area of 2-inch EMT.
D. less than the internal area of 2-inch rigid metal conduit.
Answer:
The correct option to the following question is B.) greater than the internal area of 2-inch rigid metal conduit.
Explanation:
An IMC(Intermediate metal conduit) is the steel tubing that is heavier than the Electrical Metallic Tubing but it is lighter than the RMC. It may threaded. The EMT(Electrical metallic tubing) is sometimes known as the thin-wall which is commonly used at the place of the GRC(Galvanized Rigid Conduit) it is less costly and it is lighter than Galvanized Rigid Conduit.
Given a variable word that has been assigned a string value, write a string expression that parentheses the value of word. so, if word contains "sadly", the value of the expression would be the string "(sadly)"
To parenthesize the value of a variable called word, concatenate the '(' at the beginning and ')' at the end using the '+' operator, resulting in the expression '(' + word + ')'.
Explanation:To create a string expression that surrounds the value of a variable word with parentheses, you will typically concatenate the string '(' at the beginning and the string ')' at the end of the variable. In Python, for example, this can be achieved using the plus operator '+'. If the variable word contains the value 'sadly', then the expression would be:
'(' + word + ')'
When this expression is evaluated, if word = 'sadly', it would produce the string '(sadly)'.
What do you call a firewall that is connected to the internet, the internal network, and the dmz?
>When a species is in danger of becoming extinct, it is called a(n)_____
After an antivirus server performs filtering, it may ____. a. drop the object b. send the object to the firewall to pass to the destination c. pass the object to the destination directly d. all of the above
List two challenges an operating system faces when passing parameters between user and kernel mode. describe how an operating system can overcome them.
The main challenges facing by operating system between user mode and kernel mode are as follows:
The size of each parameter which is passing to make system calls must not exceed to the size of registers. The parameters should not be more than six.To deal with the above problem, the parameters are written in the registers before executing system call.
Further explanation:
User Mode: In this mode, CPU has limited access to manage the memory and also access of peripheral devices (network cards and disks) is not permissible. The CPU can be taking away from a program at any tie.
Kernel Mode: The CPU has ability to manage the memory and have access of peripheral devices. The CPU can switch from one program to other program in this mode.
Hence, if program is running in user mode then it prevents to access the other programs.
Switching from User to Kernel Mode: First, set the values with parameters in the registers and execute the trap instruction. Just after that, CPU switches to kernel mode and jumps to the memory location. These instructions are known as system call handler or trap which reads the instructions and perform in kernel mode. After the system call, OS resets the mode to user mode and hence now it can now perform both simultaneously.
Learn more:
1. How does coding work on computers? brainly.com/question/2257971
2. Prediction accuracy of a neural network depends on _______________ and ______________. brainly.com/question/10599832
Answer details:
Grade: College Engineering
Subject: Computer Science
Chapter: Operating System
Keyword:
Computer, CPU, Operating System, user mode, kernel mode, peripheral devices, disks, network cards, trap, instructions, registers, switch, system call, size, handler, parameters, reset