ISC2 CERTIFIED IN CYBERSECURITY CC
PRACTICE FINAL STUDY GUIDE 2026
QUESTIONS WITH ANSWERS GRADED A+
⩥ Asymmetric Encryption. Answer: An algorithm that uses one key to
encrypt and a different key to decrypt the input plaintext.
⩥ Checksum. Answer: A digit representing the sum of the correct digits
in a piece of stored or transmitted digital data, against which later
comparisons can be made to detect errors in the data.
⩥ Ciphertext. Answer: The altered form of a plaintext message so it is
unreadable for anyone except the intended recipients. In other words, it
has been turned into a secret.
⩥ Classification. Answer: Classification identifies the degree of harm to
the organization, its stakeholders or others that might result if an
information asset is divulged to an unauthorized person, process or
organization. In short, classification is focused first and foremost on
maintaining the confidentiality of the data, based on the data sensitivity.
⩥ Configuration management. Answer: A process and discipline used to
ensure that the only changes made to a system are those that have been
authorized and validated.
, ⩥ Cryptanalyst. Answer: One who performs cryptanalysis which is the
study of mathematical techniques for attempting to defeat cryptographic
techniques and/or information systems security. This includes the
process of looking for errors or weaknesses in the implementation of an
algorithm or of the algorithm itself.
⩥ Cryptography. Answer: The study or applications of methods to secure
or protect the meaning and content of messages, files, or other
information, usually by disguise, obscuration, or other transformations
of that content and meaning.
⩥ Data Loss Prevention (DLP). Answer: System capabilities designed to
detect and prevent the unauthorized use and transmission of information.
⩥ Decryption. Answer: The reverse process from encryption. It is the
process of converting a ciphertext message back into plaintext through
the use of the cryptographic algorithm and the appropriate key for
decryption (which is the same for symmetric encryption, but different
for asymmetric encryption). This term is also used interchangeably with
the "deciphering."
⩥ Degaussing. Answer: A technique of erasing data on disk or tape
(including video tapes) that, when performed properly, ensures that there
is insufficient magnetic remanence to reconstruct data.
PRACTICE FINAL STUDY GUIDE 2026
QUESTIONS WITH ANSWERS GRADED A+
⩥ Asymmetric Encryption. Answer: An algorithm that uses one key to
encrypt and a different key to decrypt the input plaintext.
⩥ Checksum. Answer: A digit representing the sum of the correct digits
in a piece of stored or transmitted digital data, against which later
comparisons can be made to detect errors in the data.
⩥ Ciphertext. Answer: The altered form of a plaintext message so it is
unreadable for anyone except the intended recipients. In other words, it
has been turned into a secret.
⩥ Classification. Answer: Classification identifies the degree of harm to
the organization, its stakeholders or others that might result if an
information asset is divulged to an unauthorized person, process or
organization. In short, classification is focused first and foremost on
maintaining the confidentiality of the data, based on the data sensitivity.
⩥ Configuration management. Answer: A process and discipline used to
ensure that the only changes made to a system are those that have been
authorized and validated.
, ⩥ Cryptanalyst. Answer: One who performs cryptanalysis which is the
study of mathematical techniques for attempting to defeat cryptographic
techniques and/or information systems security. This includes the
process of looking for errors or weaknesses in the implementation of an
algorithm or of the algorithm itself.
⩥ Cryptography. Answer: The study or applications of methods to secure
or protect the meaning and content of messages, files, or other
information, usually by disguise, obscuration, or other transformations
of that content and meaning.
⩥ Data Loss Prevention (DLP). Answer: System capabilities designed to
detect and prevent the unauthorized use and transmission of information.
⩥ Decryption. Answer: The reverse process from encryption. It is the
process of converting a ciphertext message back into plaintext through
the use of the cryptographic algorithm and the appropriate key for
decryption (which is the same for symmetric encryption, but different
for asymmetric encryption). This term is also used interchangeably with
the "deciphering."
⩥ Degaussing. Answer: A technique of erasing data on disk or tape
(including video tapes) that, when performed properly, ensures that there
is insufficient magnetic remanence to reconstruct data.
