Term 331
Load balancer
A load balancer is a device or software that distributes incoming network traffic across multiple servers so no single server gets overwhelmed.
Acronym study
Terms 331–360 of 716 CCNA 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 331
A load balancer is a device or software that distributes incoming network traffic across multiple servers so no single server gets overwhelmed.
Term 332
A Local Area Network (LAN) connects computers and devices within a small physical area, such as a home, office, or school, allowing them to share resources like files, printers, and internet access.
Term 333
A local connector is a cable or port used to link a device like a computer to a nearby peripheral or network within the same immediate area.
Term 334
A local route is a routing table entry for a directly connected network interface IP address, created automatically when an IP address is assigned to that interface.
Term 335
Long-Term Evolution (LTE) is a high-speed wireless communication standard for mobile phones and data terminals, often called 4G LTE.
Term 336
Longest prefix match is the algorithm routers use to select the most specific route from a routing table when forwarding a packet to its destination.
Term 337
Loop Guard is a Spanning Tree Protocol (STP) enhancement that prevents network loops by placing a blocked port into a loop-inconsistent state if it stops receiving Bridge Protocol Data Units (BPDUs), rather than transitioning it to a forwarding state.
Term 338
A loopback address is a special IP address that a device uses to send a message to itself, primarily for testing network software without requiring physical network hardware.
Term 339
A loopback plug is a small device used to test network ports by sending a signal out and immediately receiving it back, verifying that the port is working without needing another device.
Term 340
A loop is a programming construct that repeats a block of code multiple times until a certain condition is met or until all items in a collection have been processed.
Term 341
A Link State Advertisement (LSA) is a data packet used by the OSPF routing protocol to share information about network links and topology with neighboring routers.
Term 342
A Link State Advertisement is a data packet used by OSPF routers to share information about their directly connected links and the state of those links with all other routers in the OSPF network.
Term 343
The Link State Database is a table maintained by OSPF routers that stores the complete network topology, including all links and routers, to calculate the best paths.
Term 344
MAC (Media Access Control) is a unique hardware identifier assigned to network interfaces for communication on a local network segment.
Term 345
A MAC address is a unique hardware identifier assigned to a network interface card that allows devices to communicate on a local network.
Term 346
A MAC address table is a data structure stored in a network switch that maps each of its ports to the MAC addresses of connected devices, enabling the switch to forward frames only to the correct destination.
Term 347
MAC filtering is a security practice that allows or denies network access to devices based on their unique Media Access Control (MAC) address.
Term 348
A quick subnetting method that uses the subnet mask's interesting octet to find the network size, often called the magic number (256 minus the mask octet).
Term 349
A Mail Exchange record is a type of DNS record that specifies which mail server is responsible for receiving email messages on behalf of a domain.
Term 350
A Main Distribution Frame is the central point in a building or campus where all external telecommunication cables are terminated and connected to internal network wiring.
Term 351
Malware symptoms are the observable signs on a computer or network that indicate a malicious program may have infected the system, such as slow performance, unexpected pop-ups, or unusual network activity.
Term 352
A Metropolitan Area Network (MAN) is a computer network that spans a geographic area larger than a local area network (LAN) but smaller than a wide area network (WAN), typically covering a city or a large campus.
Term 353
A cyberattack where an attacker secretly intercepts and potentially alters communication between two parties who believe they are directly communicating with each other.
Term 354
A Management Information Base (MIB) is a virtual database that stores information about network devices, organized as a hierarchical tree, which network management tools use to monitor and control those devices.
Term 355
A Management VLAN is a dedicated virtual local area network used to secure and separate administrative access to network devices like switches and routers from regular user data traffic.
Term 356
A mapped drive is a shortcut that assigns a drive letter to a shared folder on a network, making it appear as if it is a local storage device on your computer.
Term 357
The Maximum Transmission Unit (MTU) is the largest size of a data packet that can be sent over a network connection without needing to be broken into smaller pieces.
Term 358
MDIX (Medium Dependent Interface Crossover) is a twisted-pair Ethernet port that internally crosses the transmit and receive pairs for direct device connections.
Term 359
Mean Time To Repair (MTTR) is the average time it takes to fix a failed component or system and restore it to full operation.
Term 360
Media Access Control (MAC) is a sublayer of the Data Link Layer in networking that controls how devices on the same network share access to the physical medium and uniquely identifies each device with a hardware address.