WGU D431 - DIGITAL FORENSICS IN CYBERSECURITY
COMPLETE STUDY GUIDE QUESTIONS AND ANSWERS
NEWEST EDITION 2024
Computer forensics - (correct answer) The use of analytical and investigative
techniques to identify, collect, examine, and preserve computer-based material for
presentation as evidence in a court of law.
Consistency checking - (correct answer) A technique for file system repair that
involves scanning a disk's logical structure and ensuring that it is consistent with its
specification.
Cryptanalysis - (correct answer) A method of using techniques other than brute
force to derive a cryptographic key.
Curriculum vitae (CV) - (correct answer) An extensive document expounding one's
experience and qualifications for a position, similar to a résumé but with more detail. In
academia and expert work, a CV is usually used rather than a résumé.
American Standard Code for Information Interchange (ASCII) - (correct answer) A
set of codes defining all the various keystrokes you could make, including letters,
numbers, characters, and even the spacebar and return keys.
Anonymous remailing - (correct answer) The process of sending an email message
to an anonymizer. The anonymizer strips identifying information from an email message
before forwarding it with the anonymous mailing computer's IP address.
Anti-forensics - (correct answer) The actions that perpetrators take to conceal their
locations, activities, or identities.
Asymmetric cryptography - (correct answer) Cryptography wherein two keys are
used: one to encrypt the message and another to decrypt it.
Asynchronous transfer mode (ATM) - (correct answer) A high-speed connection
technology that uses fixed-length, 53-byte packets called calls.
Authenticate - (correct answer) To verify the identity of a person, or to verify
evidence.
Base transceiver station (BTS) - (correct answer) The part of the cell network
responsible for communications between the mobile phone and the network switching
system.
Basic input/output system (BIOS) - (correct answer) The basic instructions stored on
a chip for booting up the computer.
, Bit-level information - (correct answer) Information at the level of actual 1s and 0s
stored in memory or on the storage device.
Block cipher - (correct answer) A form of cryptography that encrypts data in blocks;
64-bit blocks are quite common, although some algorithms (like AES) use larger blocks.
Bootstrap environment - (correct answer) A special program, such as U-Boot or
RedBoot, that is stored in a special section of the flash memory.
Brute-force attack - (correct answer) An attack in which the attacker tries to decrypt
a message by simply applying every possible key in the keyspace.
Business continuity plan (BCP) - (correct answer) A plan for maintaining minimal
operations until the business can return to full normal operations.
Business impact analysis (BIA) - (correct answer) An analysis of how specific
incidents might impact the business operations.
Caesar cipher - (correct answer) The method of cryptography in which someone
chooses a number by which to shift each letter of a text in the alphabet and substitute
the new letter for the letter being encrypted. For example, if your text is "A CAT," and
you choose to shift by two letters, your encrypted text is "C ECV." This is also known as
a monoalphabet, single-alphabet, or substitution cipher.
Carrier - (correct answer) The signal, stream, or data file in which the payload is
hidden.
Cell-phone forensics - (correct answer) The process of searching the contents of
cell phones.
Chain of custody - (correct answer) The continuity of control of evidence that makes
it possible to account for all that has happened to evidence between its original
collection and its appearance in court, preferably unaltered.
Channel - (correct answer) The type of medium used to hide data in steganography.
This may be photos, video, sound files, or Voice over IP.
Clean room - (correct answer) An environment that has a controlled level of
contamination, such as from dust, microbes, and other particles.
Cloud computing - (correct answer) The practice of delivering hosted services over
the internet. This can be software as a service, platform as a service, or infrastructure
as a service.
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