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networking F chpt 6
chapter 6
| Question | Answer |
|---|---|
| 802.1D | IEE standard.describes bridging and spanning tree protocol |
| 802.1w | IEEE standard. describes Rapid Spanning Tree Protocol |
| application switch | provides functions between layer 4 thru 7 of the OSI model |
| base i/o port | a setting that specifies in hexadecimal notation which area of memory will act as a channel for data traveling between the NIC and the CPU. a devices i/o port can not be used by any other device. |
| BIOS | basic input output system |
| basic input output system | firmware attached to a motherboard that controls the computers communication with its devices. |
| BGP | border gateway protocol |
| best path | the most efficient route on a network from one node to another. |
| bridge ID | BID |
| BID | a complex routing protocol used on border and exterior routers. routing protocol used on internet backbones. |
| border router | a router that connects an autonomous LAN with an exterior network - the router that connects its business to an ISP |
| bridge | a connectivity device that operates at the data link layer; reads header information to forward packets according to their MAC addresses. |
| bridge | use a filtering database to determine which packets to discard and which ones to forward; contain one input and one output port and seperate network segments |
| broadcast domain | a combination of ports on a switch that make up a Layer 2 segment; to be able to exchange data with each other,broadcast domains must be connected by a layer 3 device,such as a router or switch. VLAN is an example of broadcast domain. |
| bus | type of circuit used by a systems motherboard to transmit data to compnents.as the number of bits a bus handles increases so does the speed of the device attached to the bus. |
| cardBus | a PCMCIA standard that specifies a 32 bit interface running at 33 MHz, |
| CMOS complementary metal oxide semiconductor | a microchip that stores settings pertaining to a computer devices |
| compact flash | standard for an ultrasmall removable data and input/output device capable of connecting many kinds of external peripheral to workstations,PDA's and other devices |
| content switch | a switch that provides functions between layer 4 and 7 of the OSI model |
| convergence time | the time it takes for a router to recognize a best path in the event of a change or network outage |
| cut through mode | a switching mode in which a swirch reads a frames header and decides where to forward the data before it receives the entire packet.faster but less accurate method. |
| data port | a port on a connectivity device to which nodes are connected |
| device driver | software that enables an attached device to communicate with the computers operating system |
| distance vector | simplest type of routing protocols.determine the best route for data based on the distance to the destination |
| dynamic routing | a method of routing.calculates the best path between twp nodes and accummulates this information in a routing table. |
| dynamic routing | if congestion or failure affect a network,a router uses dynamic routing to detect the problem and reroute data thru a different path. |
| dynamic routing | most networks primarily use this routing |
| EEPROM | electrically erasable programmable read only memory |
| EIGRP | enhanced interior gateway routing protocol |
| EEPROM | a type of ROM that is found on a circuit board and whose configuration information can be erased and rewritten through electrical impulses |
| EIGRP | a routing protocol that supports multiple protocols and limits unnecessary network traffic between routers.has a fast convergeance time and low overhead.easier to configure and less CPU intensive |
| ExpressCard | a PCMCIA standard that allows external devices to connect to portable computers through a 26 pin interface. |
| ExpressCard | data transfer rates of 250 Mbps in each direction.comes in two sizes 34mm and 54mm wide.will replace the CardBus standard. |
| filtering database | a collection of data createdd and used by a bridge that correlates the MAC address of connected workstations with their locations.also known as a forwarding table |
| exterior router | a router that directs data between nodes outside a given autonomous LAN.example routers used on the internets backbone |
| expansion slot | a receptacle on a computers motherboard that contains multiple electrical contacts into which an expansion board can be inserted |
| expansion board | a circuit board used to connect a device to a computers motherboard |
| firewall | a device (router or computer running special software) that selectively filters or blocks traffic between networks.used to improve data security |
| firewire | a peripheral bus standard.coded by the IEEE as the IEEE1394 standard. |
| firewire | used to network computers in a bus fashion. supports a maximum of 400 Mbps throughput |
| firmware | combination of hardware and software. the component is a read only memory chip |
| firmware | stores data establishhed at the factory and possibly changed by configuration programs that can write to rom |
| gateway | perform connectivity,session management,and data translation .they operate at multiple layers of the osi model. |
| gateway | a combination of networking hardware and software that connects two dissimilar kinds of networks. |
| intelligent hub | possesses processing capabilities and can therefore monitor network traffic,detect packet errors and collisions,poll connected devices for information and gather the data in database format. |
| hub | a connectivity device. retransmits incoming data signals to its multiple ports. |
| hub | contain one uplink port, which is used to connect to a networks backbone |
| interior router | a router that directs data between nodes on an autonomous lan |
| interrupt | a citcuit board wire through which a device issues voltage,thereby signaling a request for the processors attention |
| IRQ | interrupt request |
| IRQ | a message sent to the computer that instructs it to stop what it is doing and pay attention to something else. often used informally to refer to the interrupt request number |
| IRQ number | the unique number assigned to each interrupt in a computer.numbers range from 0 to 15 |
| Layer 3 switch | a switch capable of interrupting data at layer 3 of the osi model |
| ISA | industry standard architecture |
| ISA | original pc bus type, support an 8-bit and later 16-bit data path and a 4.77 MHZ clock speed |
| IS-IS | intermediate system to intermediate system |
| IS-IS | a link-state routing protocol, designed for use on interior routers only. |
| Layer 4 switch | a switch capable of interpreting data at layer 4 of the osi model |
| link-state | a type of routing protocol. enables routers across a network to share information; after which each router can independently map the network and determine the best path between itself and a packets destination node. |
| loopback plug | a connector used for troubleshooting |
| loopback plug | plugs into a port (serial,parallell,RJ 45)and crosses over the transmit line to the receive line, allowing outgoing signals to be redirected back to the pc for testing |
| memory range | a hexidecimal number that indicates the area of memory that the NIC and CPU will use for exchanging or buffering data |
| modular router | a router with multiple slots that can hold different interface cards or other devices as to provide flexible,customizeable interoperability |
| on-board NIC | a NIC that is integrated into a computers motherboard, rather then an expansion slot |
| on board port | a port that is integrated into the computers motherboard |
| OSPF | open shortest path first |
| OSPF | a routing protocol. that makes up for some of the limitations of RIP and can coexist with RIP on a network |
| PCI | peripheral component interface |
| PCI | the PCI bus is the NIC connection type used for nearly all new PCs; characterized by a shorter length than ISA or EISA cards, but has a faster data transmission capability |
| PCIe | peripheral component interface express |
| PCMCIA | a group of computer manufacturers who developed an interface for connecting any type of device to a portable computer. |
| PCMCIA | pesonal computer memory card international association |
| PCIe | its expansion cards can fit into older PCI slots, with some modifications to the motherboard |
| PCMCIA | slots may hold memory,modem,network interface,external harrd disk, |
| pc card | |
| RIP | routing information protocol |
| RIP | oldest routing protocol that is still widely used |
| RIP | does not work in large networking environments.in which data may have to travel thru more then 15 routers to reach their destination |
| root bridge | single brisge on a network selected by the spanning tree protocol to provide the basis for all subsequent path calculations |
| router | a multiport device that operates at Layer 3 of the osi model . Uses logical addressing information to direct data between network or segments. |
| router | determine the ebst path between nodes based on traffic congestion,available versus unavailable routes, load balancing targets. |
| routing protocols | the means by which routers communicate with each other about network status.determine the best path for routers to take between nodes. |
| RSTP | rapid spanning tree protocol |
| RSTP | detect and correct for network changes much more quickly |
| runt | an erroneously shortened packet |
| stand alone hub | a type of hub that serves a workgroup of computers that are seperated from the rest of the network, also known as a workgroup hub |
| static routing | a technique in which a network administrator programs a router to use specific paths between nodes |
| static routing | not recommended because it does not take into account the occassional network congestion, failed connections, or device moves |
| store and forward mode | a method of switching |
| store and forward mode | a switch reads the entire data frame into its memory and checks it for accuracy before transmitting it. more time consuming but transmitts data more accurately. |
| STP | spanning tree protocol |
| STP | operates in the data link layer. prevents traffic loops by calculating paths that avoid potential loops and by artifically blocking links that would complete a loop. |
| STP | given changes to a network link or device, STP will recalculate the path |
| switch | a connectivity device. logically subdivides a network into smaller, individual collision domains. |
| switch | operates at the data link layer. Interprets MAC information to determine whether to filter (discard) or forward packets it receives |
| trunking | aggregation of multiple logical connections in one physical connections between connectivity devices. trunking allows data from multiple VLANS to share a single interface on a switch |
| uplink port | a port on a c device used to connect it to another connectivity device. |
| USB | universal serial bus port |
| USB | a standard external bus. used to connect multiple types of periphals, including modems, mice, and NICs to a computer. |
| VLAN | virtual local area network |
| VLAN | a network within a network. |
| VLAN | logically defined by grouping its devices switch ports in the same broadcast domain |
Created by:
cgeaski
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