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When you want to create a list of dates that only include weekdays in Excel, you can do it by default by using the formulas supported by Excel. For example, if we want to create a list of working dates in an office, we can use this process. Leaving out the weekends means ignoring the dates of both Sunday and Saturday in the list. This tutorial will help you understand how you can autofill weekdays and exclude weekends in a list of Google Sheets. We can complete this process just by using a single formula. We can complete this process ... Read More
When we insert a new row in the table of data where we have the formula in any of the columns, you can see that the formula will not be applied to the new row even though we entered the data in the cell. We need to reapply the formula with the auto-fill handle to all the cells manually. If you are dealing with frequently changing data, you may end up wasting a lot of time applying the formula. You can solve this problem by enabling the formula to auto-fill when inserting new rows in Excel. This process can be ... Read More
Have you ever tried to create a list of dates in Excel? It is a simple process, but have you ever tried to create a list of only weekdays in Excel? It is possible by using this process. Read this tutorial to learn how you can autofill dates or only weekdays in Excel. We will complete the task using the "format" function. AutoFill Date Sequence in Excel To finish our task, we will select a range of cells, then open the format pop-up and select date. Let us see a simple process to auto-fill data sequences in Excel in a ... Read More
A logic function is a basically a Boolean expression that returns a Boolean value, which is a value that is either TRUE or FALSE. The NAND gate is a universal logic gate, thus it can be used to implement any type of logic function. Read this tutorial to learn how you can realize different logic functions using NAND gates. Let's start with a basic introduction of the NAND gates What is a NAND Gate? A NAND Gate is a type of universal logic gate that one can use to realize any kind logical expression or any other type of logic ... Read More
A number is a method used for representing an arithmetic value, measure, or count, of a physical quantity. A number system is defined as a method of naming and representing numbers. The concept of number system helps in defining the rules associated with the numbers and different operations on numbers. A number system is determined with the help of its radix or base. The radix or base of a number system is nothing but the total number of symbols used in the number system for representing the different numbers. For example, in the decimal number system, there are 10 ... Read More
What is Reflection Attack? A reflection attack is a type of cyber attack in which the attacker sends a large number of requests to a server, each with the victim's IP address as the source address. The server responds to these requests, sending a large number of responses back to the victim. This can cause the victim's network connection to become overloaded, disrupting their access to the Internet or other network resources. Reflection attacks are often used in conjunction with amplification attacks, in which the attacker uses a server with a large response capacity (such as a DNS server) to ... Read More
Authentication protocols are methods or procedures used to verify the identity of a user, device, or system. These protocols are designed to ensure that only authorized users or devices are able to access protected resources, and to prevent unauthorized access or tampering. Types of Authentication There are many different types of authentication protocols in use today, each with its own strengths and weaknesses. Here are some common types of authentication − Password-based authentication − This is the most common form of authentication, in which a user provides a username and password to log in to a system or access ... Read More
What is HMAC? HMAC (short for "Keyed-Hash Message Authentication Code") is a cryptographic hash function that uses a secret key as input to the hash function along with the message being hashed. The resulting hash value is unique to the message and the secret key, and can be used to verify the integrity and authenticity of the message. HMAC is widely used as a secure way to authenticate messages in various communication protocols, including HTTP, SSL, SSH, and many others. It is also commonly used to generate secure hashes for storing passwords, generating unique tokens for session management, and for ... Read More
What is ISAKMP? Internet Security Association and Key Management Protocol (ISAKMP) is a framework for establishing security associations (SAs) and performing key exchange in a secure manner. SAS are agreements between two devices that define how they will communicate securely. Key exchange refers to the process of exchanging keys or other cryptographic material that is used to secure communication. ISAKMP is a protocol that defines the structure and format of messages used to establish and maintain SAs. It does not specify the actual cryptographic algorithms or keys that are used. Instead, it provides a framework for negotiating these details and ... Read More
What is a Birthday Attack? A birthday attack is a type of cryptographic attack that relies on the birthday paradox to find a collision in a hash function. A hash function is a mathematical function that takes an input (called a message) and produces a fixed-size output (called a hash value or hash). The output is usually represented as a string of characters. One of the main properties of a hash function is that it is very difficult to generate the same hash value from two different input messages. This property is called collision resistance. The birthday paradox is a ... Read More