Cybersecurity-Architecture-and-Engineering VCE Exam Download

Anoperating system (OS)is a system software that manages computer hardware and software resources and provides common services for computer programs.

It serves as an intermediary between users and the computer hardware.

Key functionsof an OS include:

Managinghardware resourceslike the CPU, memory, and I/O devices.

Providing auser interface(UI) for interaction with the system.

File managementand handling file operations.

Process managementand multitasking.

Securityand access control.

Examples include Windows, Linux, and macOS.

Machine-level languages, also known as assembly languages, are low-level programming languages that are closely related to machine code.

Definition: Machine-level languages consist of instructions that are directly executed by a computer's CPU.

Assemblers: An assembler is a tool that translates assembly language code into machine code.

Characteristics: Assembly languages are specific to a computer architecture and provide a way to write programs that can be executed by the hardware directly.

References

"Structured Computer Organization" by Andrew S. Tanenbaum

"Computer Systems: A Programmer's Perspective" by Randal E. Bryant and David R. O'Hallaron

The correct answer is D — By providing over-the-air updates.

WGU Cybersecurity Architecture and Engineering (KFO1 / D488) describes that over-the-air(OTA) updates allow organizations to remotely deploy patches and updates to mobile devices without requiring users to manually visit a central location. This method is essential for maintaining security for a geographically dispersed workforce.

Remote module updates (A), tokenized container updates (B), and mobile station updates (C) are not standard or widely recognized terms for mobile device update practices in this context.

Reference Extract from Study Guide:

"Over-the-air (OTA) updates ensure that security patches and software updates can be remotely deployed to mobile devices, supporting business continuity and device security."

— WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Mobile Device Management and Security

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The correct answer is D — Block ciphers.

Per the WGU Cybersecurity Architecture and Engineering (KFO1 / D488) materials, block ciphers encrypt fixed-size blocks of data at a time, providing strong security suitable for data at rest, such as databases. Though they may be less performance-efficient compared to stream ciphers, their strength makes them ideal for securing stored sensitive information.

Stream ciphers (A) are optimized for real-time encryption, not stored data. Asymmetric encryption (B) is slower and more suited for key exchange rather than large data encryption. Hash functions (C) provide integrity verification, not encryption.

Reference Extract from Study Guide:

"Block ciphers encrypt fixed-length blocks of data, providing robust security ideal for protecting data at rest, such as sensitive database information."

— WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Encryption Technologies

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