Term 91
Bridge
A network device that connects two or more Local Area Networks (LANs) or segments, forwarding traffic based on MAC addresses to reduce collision domains.
Acronym study
Terms 91–120 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 91
A network device that connects two or more Local Area Networks (LANs) or segments, forwarding traffic based on MAC addresses to reduce collision domains.
Term 92
The Bridge ID is an 8-byte value used in Spanning Tree Protocol to uniquely identify each bridge or switch in a network and determine the root bridge of the spanning tree topology.
Term 93
Bridge priority is a numerical value used in Spanning Tree Protocol to determine which switch becomes the root bridge in a network.
Term 94
A Bridge Protocol Data Unit (BPDU) is a special message that network switches exchange to detect and prevent loops in an Ethernet network.
Term 95
Broadband is a high-speed internet connection that can carry multiple data signals at once, like having a wide highway for all your online traffic.
Term 96
A broadcast address is a special network address used to send data to every device on a local network segment simultaneously.
Term 97
A broadcast domain is a network segment where any device can send a broadcast message that all other devices on that segment will receive and process.
Term 98
A broadcast network is a type of communication network where a single message sent from one device is received by all other devices connected to the same network segment.
Term 99
Broadcast OSPF is a mode of OSPF operation used on multi-access broadcast networks (like Ethernet) where routers automatically discover neighbors and elect a Designated Router to reduce routing update traffic.
Term 100
A browser redirect is when a web browser automatically sends a user from one web address to a different one, often without the user clicking anything, which can be caused by legitimate server instructions, malware, or network interference.
Term 101
A Blue Screen of Death (BSOD) is a stop error screen displayed by Windows when a critical system error forces the operating system to shut down to prevent damage.
Term 102
A BSSID is the MAC address of an access point's radio interface, uniquely identifying a wireless cell in a WLAN.
Term 103
Business continuity is the capability of an organization to continue delivering essential services during and after a disruptive event.
Term 104
BYOD (Bring Your Own Device) is a policy allowing employees to use their personal devices for work tasks, increasing flexibility but introducing security and management challenges.
Term 105
Cable internet is a type of broadband internet access that uses the same coaxial copper cables as cable television to deliver high-speed data to homes and businesses.
Term 106
A cable tester is a device used to verify that network or electrical cables are wired correctly and can carry signals without interruption.
Term 107
A CAM table is a memory table inside a network switch that maps each connected device's MAC address to the specific switch port where that device is located.
Term 108
A CAN (Controller Area Network) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other without a host computer.
Term 109
A DNS record that maps an alias domain name to the official or canonical domain name, like a nickname pointing to a real name.
Term 110
CapEx (Capital Expenditure) is the money a company spends upfront to buy, build, or improve physical assets like servers, buildings, or equipment, which are then owned and depreciated over time.
Term 111
A captive portal is a web page that you must see and interact with before you are allowed full access to a public or guest Wi-Fi network.
Term 112
CAPWAP (Control and Provisioning of Wireless Access Points) is a standard protocol that allows a central controller to manage multiple wireless access points, separating the control plane from the data plane in a wireless network.
Term 113
A card reader is a hardware device that reads data stored on various types of cards, such as memory cards, smart cards, or identification cards, and transfers it to a computer or other system.
Term 114
A CDN is a distributed network of servers that delivers web content to users based on their geographic location.
Term 115
CDP is a Cisco proprietary protocol used by network devices to share information about themselves with directly connected neighbors, helping network administrators discover and understand the topology.
Term 116
A wide-area network that uses cellular towers and mobile data technology to connect devices to the internet without physical cables.
Term 117
The Central Processing Unit (CPU) is the main chip in a computer that executes instructions from software, acting as the brain of the system.
Term 118
A Certificate Signing Request (CSR) is a specially formatted message sent by an applicant to a Certificate Authority (CA) to request a digital certificate that binds their public key to their identity.
Term 119
A certificate warning is a security alert a web browser or application displays when it cannot fully trust the digital certificate presented by a website or service.
Term 120
Chain of custody is a documented process that tracks the handling, transfer, and possession of evidence or digital assets from the moment they are collected until they are presented in court or used in an investigation.