Answer:
Social Engineering
Explanation:
Even if you invest in the best possible security infrastructure for your corporate network, you will still be vulnerable to attacks which exploit human shortcomings. An example is where an attacker manipulates a company employee to get the system access password in return for a favour. Now he can use the password to bypass all security infrastructure and gain access to critical data and code.
Answer:

Explanation:
When we convert any decimal number into the hexadecimal number we have to divide that number with 16.
Now according to question the decimal number is 35.
Now to convert this in hexadecimal divide it with 16.

This means the quotient is 2 and the remainder is 3.
Therefore the value of hexadecimal is,

Therefore,
.
Answer:
Program
Explanation:
Program is like a set of instructions that helps hardware process data into information.
Every hardware needs a program to process data into information.
For example take the example of a data processing software like MS Excel.
You open a spreadsheet and enter some data into your sheet. and then ask the program to do some calculations with this data and give you output results. The spreadsheet software does this processing in the background for you and provides you the results.
Without program a hardware doesn't know what to do with the data. Therefore, a program is like a instruction set that guides the hardware what to do with the data.
Note: The terms software and program are usually used together but there is a difference between software and program
A software is a generalized term and program is more like a specific term.
software can be made up of several different programs which performs many different tasks. On the other hand, a program only carry out a specific task or set of instructions.
Answer:
input-year taken 2020
2020 is divisible by 2
output- 2020 is a leap year