Can you define symmetric and asymmetric encryption, and discuss their differences?

"Symmetric encryption is the process of encrypting data by creating a key which can then be used to decrypt it. In this process, a single key is used for the encryption and decryption of the data. Asymmetric encryption is similar but uses different keys for each transmission. Typically, technicians will use asymmetric encryption during the first transmission of data, followed by symmetric encryption for subsequent transmissions. Using the different types of encryption in this manner ensures that security of the data while expediting transmissions once the communication channel has been established."

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