Question: Question 19 In wireless communication, data received at the receiver is the same as sent is ensured by __. A. data confidentiality B. access control

Question 19

  1. In wireless communication, data received at the receiver is the same as sent is ensured by __.

    A.

    data confidentiality
    B.

    access control
    C.

    data integrity
    D.

    authentication

1 points

Question 20

  1. Which of the following is not a focus of security service?

    A.

    Encapsulation
    B.

    Authentication
    C.

    Data confidentiality
    D.

    Nonrepudiation

1 points

Question 21

  1. Authentication can be based on

    A.

    All the above
    B.

    Where you are
    C.

    Who you are
    D.

    Something you know

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