Answer:
In Python:
num = int(input("Enter a decimal integer: "))
temp = num
bin = ""
while num > 0:
bin = str(num%2)+bin
num//=2
print(str(temp)+" in binary is "+str(bin))
Explanation:
This prompts the user for a decimal number
num = int(input("Enter a decimal integer: "))
This assigns the input number to a temporary variable
temp = num
This initializes the binary output to an empty string
bin = ""
This loop is repeated while num is greater than 0
while num > 0:
This appends the remainder of num divided by 2 to the front of the binary variable bin
bin = str(num%2)+bin
This calculates the floor division of num and 2
num//=2
This prints the required output
print(str(temp)+" in binary is "+str(bin))
is a collection of information stored under a single name.

Answer:
Changing password and screen names regularly.
Explanation:
The cyber attacks have been common in this age. The technological advancements have eased our lives but also create hundreds of risks. These risks can include cyber bullying. The best way to keep your self away from being victim of such threat is by changing passwords regularly. This reduces the chance of hacking passwords and cyber bullying.