| A | B |
|---|
| Layer 7 of the OSI reference model | application layer |
| OSI layer that provides services to application processes (e-mail, file transfer, terminal emulation) that are outside the OSI reference model | application layer |
| The amount of information that can flow through a network connection in a given period of time | bandwidth |
| A Layer 2 device designed to create two or more LAN segments, each of which is a separate colision domain. | bridge |
| Data packets that is sent to all nodes on a network. | broadcast |
| The set of all devices that receive broadcast frames originating from any device in the set. | broadcast domain |
| This topology connects all the devices with a single cable. | bus |
| In Ethernet, the result of two nodes transmitting simultaneously. The frames from each device impact and are damaged when they meet on the physical medium. | collision |
| In Ethernet, the network area within which frames that have collided are propogated. | collision domain |
| Network devices that propogate collisions | repeaters, hubs |
| Network devices that do not propogate collisions | bridges, LAN switches, routers |
| A globally coordinated network of devices desigend to accelerate the delivery of information over the Internet infrastructure. | data center |
| This OSI layer provides transit of data across a physical link. | data link layer |
| This OSI layer is concerned with physical addressing, network topology, line discipline, error notification, ordered delivery of frames, and flow control. | data link layer |
| Unwrapping data in a particular protocol header. | de-encapsulation |
| Wrapping data in a particular protocol header | encapsualtion |
| A network in which a star network is expanded to include an additional networking device that is connected to the main networking device. | extended-star topology |
| Intranet-based applications and services that employ extended, secure access to external users or enterprises. | extranet |
| a router or access server designated as a buffer between any connected public netowrks and a private network. | firewall |
| A traffic-passing technique used by switches and bridges in which traffic received on an interface is sent out all that deveice's interfaces except the interface on which the information was received. | flooding |
| A logical grouping of information sent as a data link layer unit over a transmission medium. | frame |
| connects all devices (nodes) to each other for redundancy and fault tolerance. | full-mesh topolofy |
| Created similar to an extended-star topology. The primary difference is that it does not use a central node. Instead, it uses a trunk node from which it branches to other nodes. | hierarchical topology |
| A common connection point for devices in a network. They commomly connect segments of a LAN, and contain multiple ports. When a packet arrives on one port, it is copied to the other ports so that all segments of the LAN can see all the packets. | hub |
| A common LAN configuration designed to be accessed by users who have priveleges to an organization's internal LAN. | intranet |
| A high-speed, low-error data network covering a relatively small geographic area (up to a few thousand meters). They connect workstations, peripherals, terminals, and other deviecs in a single building or another geographically limited area. | local area network (LAN) |
| A hardware address that uniquely identifies each node of a network. This address control data communication for the host on the network. | Media Access Control (MAC) |
| A network that spans a larger area than a LAN but a smaller area than a WAN. | metropolitan area network (MAN) |
| Allows the creation of private or dedicated segments - one host per segment. | microsegmentation |
| Each host receives access to the full bandwidth and does not have to compete for avaialble bandwidth with other hosts. | microsegmentation |
| A printed circuit board that fits into the expansion slot of a bus on a computer motherboard to provide network access. Also can be a peripheral device. | network interface card (NIC) |
| This OSI layer provides connectivity and path selection between two end systems and is the layer at which routing occurs. | network layer |
| A network architectural model developed by the OSI. | Open System Interconnection (OSI) reference model |
| It consist of 7 layers, each of which specifies particular network functions, such as addressing, flow control, error control, encapsulation, and reliable message transfer. | Open System Interconnection (OSI) reference model |
| This network architectural model is used universally for teaching and understanding network functionality. | Open System Interconnection (OSI) reference model |
| A logical grouping of information that includes a header containing control information and (usually) user data. They most often refer to network-layer units of data. | packet |
| At least one device maintains multiple connections to others without being fully meshed. This topology provides redundancy by having several alternative routes. | partial-mesh topology |
| A form of communication in which each layer of the OSI model at the source must communicate with its peer layer at the destination. | peer-to-peer communication |
| This OSI layer defines the electrical, mechanical, pricedural, and functional specifications for actictivating, maintaining, and deactivating the physical link between end systems. | physical layer |
| This OSI layer ensures that information sent by the application layer of one system can be read by the application layer of another. | presentation layer |
| A formal description of a set of rules and conventions that agovern how deviecs on a network exchange information. | protocol |
| A set of related protocols that operate together and, as a group, address communication at some or all of the seven layers of the OSI reference model. Not every protocol stack covers each layer of the mode, and often a single protocol in the suite addresses a number of layers at onece. | protocol suite |
| A networking device that exists at Layer 1. Its purpose is to regenerate and retime network signals at the bit level, allowing them to travel a longer distance. | repeater |
| A topology in which hosts are conected in the form of a ring or a circle, and has no beginning or end that needs to be terminated. | ring topology |
| A type of internetworking device that passes data packets between networks based upon Layer 3 addresses. | router |
| In the TCP specification, a logical information group at transport layers of the OSI reference model. | segment |
| This layer establishes, manages, and terminates session between applications, and manages data exchange between presentation layer entities. | session layer |
| The most commonly used physical topology in Ethernet LANs. It is made up of a central connection point that is a device such as a hub, switch, or router, where all cabling segments meet. | star topology |
| A dedicated, high-performance netowrk that moves data between servers and storage resources. | storage-area network (SAN) |
| A device that connects LAN segments, uses a table of MAC addresses to determine the segment on which a frame needs to be transmitted, and reduces traffic. They operate at much higher speeds than bridges. | switch |
| The rate of information arriving at or passing through a particular point in a network system. | throughput |
| An access method by which network devices access the physical medium in an orderly fashion based on possession of a small frame called a token. | token passing |
| This OSI layer is responsible for reliable netowrk communication between end nodes. It provides mechanisms to establish, maintain, and terminate virtual circuits, transport fault detection and recovery, and information flow control. | transport layer |
| A private network constructed within a public network infrastructure such as a global Internet. | virtual private network (VPN) |
| A data communications network that serves users across a broad geographic area nd often uses transmission devices provided by common carriers. | wide are network (WAN) |
