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Computer Networks Online Tests

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## Ciphers MCQs: Questions and Answers

MCQ 1: What is the bit rate for high-definition TV High Definition Television (HDTV)?

A) keys
B) others
C) multi parties
D) single party

MCQ 2: The cryptography algorithms (ciphers) are divided into

A) two groups
B) four groups
C) one single group
D) zero single group

MCQ 3: The period of a signal is 100 ms. What is its frequency in kilohertz?

A) 100 Hz
B) 1 kHz
C) 10 Hz
D) 0.02 Hz

MCQ 4: Period is formally expressed in

A) seconds
B) keys
C) hertz (HZ)
D) cycle

MCQ 5: The shift ciphers sometimes referred to as the

A) Caesar cipher
B) Julia cipher
C) plain cipher
D) XOR cipher

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