Update README.md

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Bill Buchanan
2021-02-11 21:00:00 +00:00
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@@ -33,6 +33,8 @@ Back-up of content: [here](https://asecuritysite.com/csn11117/unit02)
* Why EDE in 3DES?: [here](https://www.youtube.com/watch?v=ttayDxqfQkA)
## Sample exam questions
**Note: There is no need to look at these questions just now. They are here to give you an idea of the test of exam question that might be asked **
The following are sample exam questions for symmetric key:
* Explain the differences between stream and block ciphers, and why salt is required within the encryption process.