Explanation:
Acid rain can cause serious problems for many different animals and plants. As a result, the entire food web is affected. For example, acid rain can cause phytoplankton in lakes to die. Insects, which rely on phytoplankton for food, now have less food to eat, and they begin to die as a result.
Using an electronic signature on official documentation best illustrates the process of authentication
Further explanation:
The continuous rise of Electronic signatures has made it easier for people to accept signed documents by email or through electronic devices. One good example of electronic signatures is the implementation of digital signatures which broadly encompasses many types of electronic signatures out there. Digital signatures are unique to each signer and follow a standard authentication protocol called PKI. PKI use mathematical algorithms to generate what are known as private and public keys.
A good example is Bob and Jane. Jane sends an eSignature document using her private keys. Bob receives this document with an attached copy of Jane’s public key. The signature will be considered valid if the public key decrypts the signature correctly.
Learn more about eSignatures and electronic signatures.
brainly.com/question/8776017
#LearnWithBrainly
Answer:
An operating system can be categorized according to both the given options. Thus answer is option C
Explanation:
An operating system should support multiple logins. Because the login plays a major role and that is the need and mainly in the organization where one system will be shared by multiple users. Also, Operating system should perform multi-tasking. This efficiency is required so that the user completes the work very faster and he need not wait to go for the next task.
For example an operating system handles user’s task, background tasks, keep track of the status of the devices, allots output device to the requested user and so on.
The type of attack that the hacker performed is Domain Name System (DNS) server cache poisoning.
<h3>What is DNS poisoning?</h3>
In Domain Name System (DNS) server cache poisoning, the hackers often enter into a DNS server because they want to make an adjustment to its directory so that it can point the domain name users enter to a wrong, IP address.
Note that Domain Name Server (DNS) poisoning is a form of system attack in which there is the change of DNS records which are then used to redirect online traffic to a wrong website.
Learn more about hacker from
brainly.com/question/24956493
Stack is LIFO data structure (Last In First Out) where the last element entered in stack will be the last one to be out of stack. It has three operations: push() : used to insert an element in stack, pop() : used to delete an element from the stack, top() : used to return the top of the stack i.e. the newest member of the stack. All these operations will take place at the top.
<u>Explanation:</u>
Now, looking at the program, x and y are initialized the values of 2 and 3 respectively. The stack pushes 8 onto the stack making it the first member of the stack. Then the value of x which is 2 is pushed onto the stack. Next, (x+5) = (2+5) = 7 is pushed onto the stack.
Pop() is used to delete hence 7 is popped out from the stack. top() is assigned to y which is 2 in this case and again 2 is popped out from the stack. Now, (x+y) = (2+2) = 4 is pushed onto the stack. And the top() is assigned to x which is 4. 4 is again popped out from the stack. Hence the value of x is 4.
