The statement refers to the different types of media that can be used for data backup. Backup media encompasses various storage devices and methods used to store copies of data. Examples include:
CDs and DVDs: Optical storage media used for smaller-scale backups.
Hard drives: Mechanical or solid-state drives used for local and external backups.
Cloud storage: Online services providing remote storage and access to backups.
Choosing the appropriate backup media is crucial for ensuring data availability and recovery in case of data loss.
References
David M. Kroenke and Randall J. Boyle, "Using MIS," Pearson.
Curtis Preston, "Backup & Recovery: Inexpensive Backup Solutions for Open Systems," O'Reilly Media.

The correct answer is B - Implementing domain name system security extensions (DNSSEC) to digitally sign DNS responses and prevent DNS spoofing attacks.
WGU Cybersecurity Architecture and Engineering (KFO1 / D488) teaches that DNSSEC protects the integrity and authenticity of DNS responses, thereby preventing DNS spoofing (also called DNS cache poisoning), which could redirect users to malicious sites.
Restricting DNS access (A) is not sufficient against spoofing. Increasing patching frequency (C) is good practice but does not specifically stop spoofing. Security awareness training (D) helps against phishing, not DNS vulnerabilities.
Reference Extract from Study Guide:
"DNSSEC digitally signs DNS data to ensure the integrity and authenticity of DNS responses, mitigating risks such as DNS spoofing and cache poisoning."
- WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Secure Networking Protocols

A programming language is a formal language comprising a set of instructions that produce various kinds of output. Programming languages are used in computer programming to implement algorithms and manipulate data. They provide the vocabulary and grammatical rules for instructing a computer to perform specific tasks, allowing developers to write software programs that can be executed by a computer.

* Arelational databaseis structured to recognize relations among stored items of information.
* Multiple tablesin a relational database can have interrelated fields.
* These relationships are often managed throughforeign keys, which reference the primary keys of other tables.
* This relational model allows for complex queries and data integrity across the database.
* Example:Tables such asCustomers,Orders, andProductsin a sales database, whereOrderstable may reference bothCustomersandProductstables to establish relationships.
References:
"Database System Concepts" by Silberschatz, Korth, and Sudarshan.
"SQL and Relational Theory" by C.J. Date.

The correct answer is C - Host-based firewall.
According to the WGU Cybersecurity Architecture and Engineering (KFO1 / D488) materials, a host-based firewall enforces traffic control policies at the endpoint level. It can allow or deny traffic based on application, port, IP address, and protocol rules, restricting access to only approved services and applications on a system.
Antivirus tools (A) detect malware but do not control network traffic. Two-factor authentication (B) secures user access but does not manage network traffic. HSMs (D) handle encryption keys, not network access control.
Reference Extract from Study Guide:
"Host-based firewalls restrict traffic at the system level, permitting only authorized services and applications, enhancing endpoint security."
- WGU Cybersecurity Architecture and Engineering (KFO1 / D488), Endpoint Protection and Firewalls