Term 421
IPv4
IPv4 is the fourth version of the Internet Protocol, a set of rules that assigns unique numerical addresses to devices so they can communicate over networks like the internet.
Acronym study
Terms 421–450 of 1033 N10-009 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 421
IPv4 is the fourth version of the Internet Protocol, a set of rules that assigns unique numerical addresses to devices so they can communicate over networks like the internet.
Term 422
An IPv4 address is a unique 32-bit numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication.
Term 423
IPv6 is the most recent version of the Internet Protocol, designed to replace IPv4 by providing a vastly larger number of unique addresses and improved network features.
Term 424
An IPv6 address is a 128-bit numeric label used to identify a device on an Internet Protocol network, designed to replace IPv4 due to the exhaustion of available addresses.
Term 425
An IPv6 global unicast address is a public, globally unique IP address assigned to a single network interface, allowing direct communication over the Internet.
Term 426
An IPv6 link-local address is a self-assigned, non-routable address used for communication between devices on the same network segment without needing a central server.
Term 427
IS-IS is a link-state routing protocol used in large IP and OSI networks, known for its fast convergence and hierarchical design.
Term 428
An ISP is a company that provides individuals and organizations access to the Internet, along with related services like email and web hosting.
Term 429
Jitter is the unwanted variation in the delay of data packet delivery over a network, causing inconsistent communication timing.
Term 430
Journalctl is a command-line tool used to view and query logs collected by the systemd journal, which stores system and application messages on Linux systems.
Term 431
Key escrow is a system where cryptographic keys are stored securely with a third party so that authorized parties can access encrypted data when the original key holder is unavailable or when lawful access is required.
Term 432
Key management is the process of creating, storing, distributing, using, rotating, and destroying cryptographic keys securely throughout their entire lifecycle.
Term 433
Key rotation is the process of replacing an old cryptographic key with a new one to maintain security and limit the damage from a potential key compromise.
Term 434
Key stretching is a technique that makes a weak password or key stronger by processing it through a slow, resource-intensive function to deter brute-force attacks.
Term 435
A Keyboard-Video-Mouse (KVM) is a hardware device that allows you to control multiple computers using a single keyboard, monitor, and mouse.
Term 436
KMS (Key Management Service) is a Microsoft technology that automates volume licensing activation for Windows and Office products within an organization's network.
Term 437
A KVM switch is a hardware device that allows you to control multiple computers from a single keyboard, monitor, and mouse.
Term 438
LACP is a protocol that automatically combines multiple physical network links into a single logical link to increase bandwidth and provide redundancy.
Term 439
Local Area Network — a network confined to a single physical location such as an office, building, or campus.
Term 440
The last assignable IP address in a subnet, which is one less than the broadcast address.
Term 441
Latency is the time delay between a request being sent over a network and the response being received, often measured in milliseconds.
Term 442
Latency routing is a DNS-based traffic management method that directs user requests to the server location which can provide the lowest network latency for that specific user.
Term 443
A Layer 2 switch is a network device that forwards data frames based on the MAC addresses found in the frame headers, operating within a single local area network segment.
Term 444
A network device that combines the high-speed switching of a Layer 2 switch with the routing capabilities of a router, allowing it to forward traffic based on both MAC and IP addresses.
Term 445
A small, push-pull fiber optic connector with a 1.25 mm ferrule, commonly used for high-density data center and telecommunications connections.
Term 446
LDAPS is a secure version of LDAP that encrypts all directory service communications using SSL or TLS.
Term 447
LDAPS encrypts LDAP traffic using SSL/TLS to secure directory queries and authentication over a network.
Term 448
In Spanning Tree Protocol (STP), the learning state is a temporary port state where the switch builds its MAC address table from incoming frames but does not yet forward user data, ensuring no loops are formed.
Term 449
A dedicated, uncontended telecommunications circuit rented from a service provider that provides a fixed, symmetrical bandwidth connection between two locations.
Term 450
Least privilege is a security principle that means giving users, systems, or programs only the minimum permissions they need to do their job and nothing more.