A composite primary key applies to more than one field. <span>A table can have only one primary key, which may consist of single or multiple fields.</span>
A composite primary key is selected from Design view. <span>In Design </span>view<span>, you can use the </span>Primary Key<span> button to assign or remove the </span>primary key<span> designation for the </span>selected<span> field or fields.</span>
Answer:
Option(B) i.e., social engineering is the correct option to the question.
Explanation:
The following option is correct because social engineering is the type of attack in which the criminals tricks the computer users to disclose the confidential data or information. Criminals or hackers use this trick because by this they can easily take advantage of your confidential information or corporate secrets.
Answer:
<em>def without_end(strg):</em>
<em> if len(strg)>2:</em>
<em> return strg[1:-1]</em>
<em> else:</em>
<em> return strg</em>
Explanation:
Given above is a function in Python for solving this problem, we can try different output for this program by calling this function in a print statement
print(without_end ("hello")) output ell
print(without_end ("java")) output av
print(without_end ("coding")) output odin
Answer:
B. False.
Explanation:
Cryptanalysis can be defined as the study, art or process of evaluating and analyzing information systems such as ciphertext, cryptographic systems and ciphers. The main purpose of Cryptanalysis is for a better understanding of how the cryptographic system works, in order to find techniques for deciphering, defeating or weakening them without an access to any privileged or secret data (information) required to do so.
Hence, cryptanalysis is made more difficult by having longer keywords as opposed to having shorter keywords which typically would make it easier for an attacker to decipher.
In a nutshell, it is false and incorrect to say that cryptanalysis is made more difficult by having shorter keywords.