apple, stop sign, fire truck, stop light... ect
There are different kinds of keys. The identities of Alice and Bob are verified in this protocol.
<h3>What is public and private key in SSL?</h3>
These keys are known to be a kind of related pair of text files and they are often made together as a pair if one makes their Certificate Signing Request (CSR).
Note that the private key is different file that is often used in the encryption/decryption of data so as to sent a file between one's server and the connecting clients.
Learn more about public/private key from
brainly.com/question/8782374
<em>The answer is wireless cellular phones.
</em>
<em>
</em>
<em>Companies use of wireless cellular phones may vary and majority are considered it as optional. Instead of talking via wireless cellular phones, emails and telephone lines conversation are much advisable for cost-effective and formal type of communication process.</em>
Answer:C. Collateral
Explanation:hope it helps