Term 1
/dev
/dev is a special directory in Unix-like operating systems that contains files representing every hardware device and virtual device connected to the system.
Acronym study
Terms 1–30 of 1222 SK0-005 acronyms and key terms. Each entry includes a plain-English definition and a link to the full 800-word glossary page with exam context and practice questions.
Term 1
/dev is a special directory in Unix-like operating systems that contains files representing every hardware device and virtual device connected to the system.
Term 2
A system file on Unix-like operating systems that stores essential user account information, including usernames, user IDs, and default shell settings.
Term 3
/sys is a virtual filesystem in Linux (sysfs) that exposes kernel objects, devices, drivers, and system information as files and directories for user-space interaction.
Term 4
Two-factor authentication (2FA) is a security method that requires two different types of proof before granting access to an account or system.
Term 5
An A record is a DNS record that maps a domain name to the IPv4 address of the server hosting that domain.
Term 6
An A record is a type of DNS resource record that maps a domain name to an IPv4 address.
Term 7
AAA on Cisco devices is a security framework that controls who can access the network, what they can do, and keeps a record of their actions.
Term 8
Access control is the security practice of determining who or what is allowed to view, use, or enter a resource, and under what conditions.
Term 9
An access review is a periodic audit process where administrators check and confirm which users have permissions to what resources, ensuring only authorized people retain access.
Term 10
Access Transparency is the practice of logging and monitoring all access requests to cloud service provider infrastructure by the provider's personnel, giving customers visibility into who accessed their data and when.
Term 11
Active reconnaissance is the process of directly interacting with a target system or network to gather information, often through scanning and probing.
Term 12
Active-active is a high-availability architecture where two or more nodes run workloads simultaneously and share the load, ensuring continuous service even if one node fails.
Term 13
An activity log is a record of all operations performed on Azure resources, capturing who did what, when, and where, for auditing and troubleshooting purposes.
Term 14
Address Resolution Protocol (ARP) is a network protocol that maps a device's IP address to its physical MAC address so data can travel across a local network.
Term 15
An administrative control is a policy, procedure, or guideline designed to manage and reduce security risk through people and processes rather than technology alone.
Term 16
An administrative template is a file used by Windows group policy to control registry-based settings for applications and the operating system, allowing administrators to enforce configuration policies across a network.
Term 17
Admission controllers are plugins that intercept and process requests to the Kubernetes API server after authentication and authorization, but before the request is persisted, allowing policies to be enforced on objects being created, modified, or deleted.
Term 18
A cybersecurity exercise where a team mimics the tactics, techniques, and procedures of a real attacker to test an organization's defenses without causing actual harm.
Term 19
Adware is software that automatically displays or downloads unwanted advertisements, often bundled with free programs, and may track user behavior without clear consent.
Term 20
AH (Authentication Header) is an IPsec protocol that provides connectionless integrity, data origin authentication, and anti-replay protection for IP packets.
Term 21
AH (Authentication Header) is an IPsec protocol that provides connectionless integrity, data origin authentication, and anti-replay protection for IP packets.
Term 22
Aircrack-ng is a suite of wireless network security tools used to capture packets, monitor networks, and crack WEP and WPA-PSK keys for penetration testing and security auditing.
Term 23
ALE (Annualized Loss Expectancy) is a risk management formula that estimates the yearly monetary loss from a specific threat to an asset.
Term 24
An alert is a notification that something unusual or potentially harmful has happened in a computer system or network.
Term 25
Alert fatigue is the desensitization and overwhelming feeling security analysts experience when they receive so many security alerts that they begin to ignore or miss them.
Term 26
An alert rule is a set of conditions and actions that trigger a notification when a monitored metric or log reaches a predefined threshold.
Term 27
Amazon CloudWatch is a monitoring service for AWS resources and applications that collects metrics, logs, and events to help you observe and troubleshoot your cloud infrastructure.
Term 28
Amazon FSx is a fully managed service that makes it easy to launch, run, and scale feature-rich, high-performance file systems in the cloud, supporting popular file systems like Windows File Server and Lustre.
Term 29
An Amazon Machine Image (AMI) is a pre-configured template used to launch virtual servers (EC2 instances) in Amazon Web Services, including the operating system, software, and settings.
Term 30
Anacron is a tool that runs scheduled tasks on computers that are not always turned on, ensuring they still get executed even if the computer was off at the scheduled time.