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Examen

ECES Practice exam 2023 with 100% correct answers
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5

julio 2023

2022/2023

A+
How did the ATBASH cipher work? By substituting each letter for the letter from the opposite end of the alphabet (i.e. Abecomes Z, B becomes Y, etc.) DES has a key space of what? 2^56 Which of the following are valid key sizes for AES (choose three)? 128, 192, 256 Which of the following algorithms uses three different keys to encrypt the plain text? 3DES Which of the following is a block cipher? AES Which of the following is a type of encryption that has t...
EXAMCOLLECTIVES
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Examen

ECES - Practice Exam 2023 with 100% correct answers
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42

julio 2023

2022/2023

A+
Which of the following is generally true about key sizes? a. Larger key sizes increase security b. Smaller key sizes increase security c. Key size is irrelevant to security d. Key sizes must be more than 256 bits to be secure a. Larger key sizes increase security How did the ATBASH cipher work? a. By shifting each letter a certain number of spaces b. By Multi alphabet substitution c. By rotating text a given number of spaces d. By substituting each letter for the letter from ...
EXAMCOLLECTIVES
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Examen

ECES Practice Quiz (2022/2023) Rated A+
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4

julio 2023

2022/2023

A+
a data concealment method for covert communications that makes use of LSB replacement <<Ans>> Steganography 12 % 5 Modulus Math <<Ans>> 2 Symmetrical encryption is expressed mathematically as <<Ans>> C = E(k,p) Tiger Hash Value <<Ans>> 192-bit SHA256 Hash Value <<Ans>> 128-bit FORK256 Hash Value <<Ans>> 256-bit SHA1 Hash Value <<Ans>> 160-bit GOST Hash Value <<Ans>>...
Mawseron
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