Answer:
Importance of backup in system administration:
Backups are crucial in system administrations for preserving continuity and protecting against specific types of hardware failures, service interruptions, and human mistakes. To aid a company in recovering from an unexpected catastrophe, backup copies make it possible to restore data to a previous point in time. To safeguard against primary data loss or corruption, it is essential to save a copies of data on a different media. When a system administrator create a backup, he makes a copy of the data that you can restore if your main data is lost. These errors may be the consequence of faulty hardware or software, corrupted data, or a human error like a targeted attack or an unintentional deletion. System backup and recovery is therefore a crucial skill for system administrators as well as the companies they work for.
Three methods for performing backup:
- Disk image: A efficient method to back up not only the files and directories but also everything else on the system is by creating a disk image. If a user have a disk image, the user can restore everything, including the operating system, applications, data, and more, so the user won't have to worry about any difficulties. Placing the disk image-containing DVD into the DVD-ROM to restore the backup. Additionally, just attach an external HDD to the computer if the user have a disk image that they made.
- External hard drive: The most common backup method is to use an external hard drive or even a USB flash drive. An HDD can be easily, quickly, and affordably backed up. It is effective since consumers may carry their portable backup with them wherever they go.
- Cloud backup: Cloud backup or Online backup has been around for a while, but not many people really utilize it. But the greatest backup technique by far is cloud backup. The user does not have to worry about hardware problems because their files are saved in the cloud and can be accessed from anywhere because the backups are automatically produced and everything is synchronized. It is one of the greatest methods to backup, especially when you consider that the contents are encrypted and stored securely.
Mapping to the IP address of the logged-in user<u>-will detect a credential theft</u>
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Explanation:
In the "Domain Credential Filter" method the firewall matches the username and the password submitted by the user with the corporate user id and password.
In order to match the credentials submitted by the user the firewalls retrieves data from the bloom filter which is further connected to windows User-ID credential service add-on.
The firewall also looks in its Mapping Table for the IP address of the logged-in user
Answer:
- low = 10
- high = 50
- count = 0
-
- for i in range(low, high + 1):
- if(i % 3 == 0 and i % 5 == 0):
- count += 1
- print(count)
Explanation:
The solution code is written in Python.
We can create low and high variables to store the lower bound and upper bound in the range (Line 1-2)
Next create a counter variable, count (Line 3).
Use a for loop to traverse through the number between lower bound and upper bound and check if the current number-i is divisible by 3 and by 5, increment the count by one.
After the loop, print the count and we can get the number of ideal integers within the range (Line 8).
Answer:
- import java.util.Scanner;
-
- public class Main {
- public static void main(String[] args) {
- Scanner input = new Scanner(System.in);
- System.out.print("Input total sales of month: ");
- double totalSales = input.nextDouble();
-
- double stateTax = totalSales * 0.04;
- double countyTax = totalSales * 0.02;
- double totalSalesTax = stateTax + countyTax;
-
- System.out.println("County Tax: $" + countyTax);
- System.out.println("State Tax: $" + stateTax);
- System.out.println("Total Sales Tax: $" + totalSalesTax);
- }
- }
Explanation:
Firstly, create a Scanner object and prompt user to input total sales of month (Line 5-7). Next, apply the appropriate tax rate to calculate the state tax, county tax (Line 9 - 10). Total up the state tax and county tax to get the total sales tax (Line 11).
At last, print the county tax, state tax and the total sales tax (Line 13 - 15).
To switch between windows, use the key combo Alt+tab to move forward between windows but use Alt+shift to move backwards. Use tab to move between each window you have.
Another way is to use the key combo windows key+tab but it doesn't seen to be used as often as its not "in rows".
