Fundamentals of Cryptography in
Information Security Exam 2025
Questions and Answers 100% Pass
What is cryptography? - ANSWER-The practice of transforming information so
that its meaning cannot be understood by unauthorized parties.
What is the purpose of steganography? - ANSWER-To hide the existence of data.
How can hidden messages be embedded in files? - ANSWER-By dividing data and
hiding it in unused portions of the file.
What is a common scheme used in steganography? - ANSWER-Hiding data in the
file header fields or between sections of the metadata.
What are the two main methods of cryptography mentioned? - ANSWER-
Transposition (rearranging letters) and substitution (replacing one letter with
another).
What is encryption? - ANSWER-The process of changing the original text into a
scrambled message.
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, What is decryption? - ANSWER-The reverse process of encryption, turning
ciphertext back into plaintext.
What is plaintext? - ANSWER-Unencrypted data that is input for encryption or
the output of decryption.
What is ciphertext? - ANSWER-The scrambled and unreadable output of
encryption.
What are the module objectives for the cryptography module? - ANSWER-Define
cryptography, describe hash, symmetric, and asymmetric algorithms, list uses of
cryptography, and explain limitations and attacks.
What is a visual example of steganography? - ANSWER-Changing the last bits of
color squares in an image without visible impact, forming a hidden word.
What is the significance of metadata in steganography? - ANSWER-It can be used
to hide data between sections that describe the content or structure of the actual
data.
What is the outcome of applying transposition in cryptography? - ANSWER-Each
letter of the message is rearranged.
What does the term 'scrambling' refer to in cryptography? - ANSWER-
Transforming information so that it cannot be understood by unauthorized parties.
What is the role of a cryptographic algorithm? - ANSWER-To provide the
methods for encryption and decryption processes.
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
Information Security Exam 2025
Questions and Answers 100% Pass
What is cryptography? - ANSWER-The practice of transforming information so
that its meaning cannot be understood by unauthorized parties.
What is the purpose of steganography? - ANSWER-To hide the existence of data.
How can hidden messages be embedded in files? - ANSWER-By dividing data and
hiding it in unused portions of the file.
What is a common scheme used in steganography? - ANSWER-Hiding data in the
file header fields or between sections of the metadata.
What are the two main methods of cryptography mentioned? - ANSWER-
Transposition (rearranging letters) and substitution (replacing one letter with
another).
What is encryption? - ANSWER-The process of changing the original text into a
scrambled message.
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, What is decryption? - ANSWER-The reverse process of encryption, turning
ciphertext back into plaintext.
What is plaintext? - ANSWER-Unencrypted data that is input for encryption or
the output of decryption.
What is ciphertext? - ANSWER-The scrambled and unreadable output of
encryption.
What are the module objectives for the cryptography module? - ANSWER-Define
cryptography, describe hash, symmetric, and asymmetric algorithms, list uses of
cryptography, and explain limitations and attacks.
What is a visual example of steganography? - ANSWER-Changing the last bits of
color squares in an image without visible impact, forming a hidden word.
What is the significance of metadata in steganography? - ANSWER-It can be used
to hide data between sections that describe the content or structure of the actual
data.
What is the outcome of applying transposition in cryptography? - ANSWER-Each
letter of the message is rearranged.
What does the term 'scrambling' refer to in cryptography? - ANSWER-
Transforming information so that it cannot be understood by unauthorized parties.
What is the role of a cryptographic algorithm? - ANSWER-To provide the
methods for encryption and decryption processes.
COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
