Can encrypted email provide verification to a sender that a recipient has read an email message? Why or why not?
What will be an ideal response?
Not precisely. It could provide verification that some process operating with the recipient’s key opened the message. Whether that process was controlled by the recipient, whether the recipient provided the key in question, and whether the recipient actually read the message are open to dispute.
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where i is the square root of -1. Which of the following statements is false?
Complex numbers have the form ``` realPart + imaginaryPart * i ``` a) C#’s simple numeric types are value types. b) To mimic the simple numeric types, we can define ComplexNumber as a value type by using a struct (short for “structure”) rather than a class. c) C#’s simple types like int and double are actually aliases for struct types. d) Microsoft recommends using structs for most new types, but recommends a class if the type represents a single value.
Which digital signal modulation method is a binary modulation technique in which the carrier signal's frequency is changed to represent a 1 or 0 bit?
A. ASK B. FSK C. PSK D. FDM
Which of the following is an advantage of a signature-based detection system?
A. the definition of what constitutes normal traffic changes B. it is based on profiles the administrator creates C. each signature is assigned a number and name D. the IDPS must be trained for weeks
The two major mobile operating systems on the market are ________ and Android
A) PrimOS B) Windows C) iOS D) Palm