6444658
Description
Flashcards by Anika Patry, updated more than 1 year ago
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Created by Anika Patry
over 8 years ago
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| Question | Answer |
| Dhcp | Dynamic Host Computer Protocol how the computer is assigned an ip address (however there is another method) |
| Back Bone | Transmission of data that connects small segments into the larger network |
| serial | "daisy chaining" a series of routers and switches in a chain connected to the host. |
| Distributed | a series of hubs with a central device that is connected to other switches can easily extended, scaleable |
| Collapsible backbone | one central hub /router is connected to individual switches |
| parallel | imilar to the collapse back bone server however it has two routers and double cabling |
| ICS | Industrial Controll sysytem |
| SCADA | supervisory control and data Acquisitions |
| DCS | distibuted control system |
| PLC'S | Programmable Logical controllers |
| Centralized network | a data base main frame has all the programs and runs iton the mainframe |
| Peer to peer | decentralized because any computer can be used to share and get resources |
| Csma Cd | carrier sense multiple access Cd: collision detection |
| Csma Ca | carrier sense multiple access CA: collision avoidance |
| Simplex | One way transmission of data |
| Half duplex | Two way transmission, but only one direction at a time One device send the other receives Roles can switch |
| Full duplex | Simultaneous two way transmission of data Devices can send and receive at the same time(good for configuring devices) |
| OSI Model | unknown |
| 7- Application Layer | 2-a |
| 6-Presentation Layer | 2-a |
| 5-Session Layer | 2-a |
| 4-Transport Layer | 2-a |
| 3-Network Layer | 2-a |
| 2- Data Link Layer | 2-a |
| 1-physical Layer | 2-a |
| UTP | • no shielding • Typically 4 pair • In expensive |
| STP | • Shielded around conductors • Typically contains four pairs of stranded conductors • More expensive than UTP |
| Standards for TIA/EIA category 1 | Voice Transmission max speed: 1 Mbps |
| category 3 | Ethernet max speed: 10 Mbps |
| category 5 | fast Ethernet max speed: 100 Mbps |
| category 5e | Gigabit Ethernet max speed: 1 Gbps |
| category 6a | Gigabit ethernet max speed: 1 Mbps |
| TIA/EIA 568A Standard | 1- green/white 2-green 3- orange/white 4- blue 5-blue white 6- orange 7- brown/white 8- brown |
| TIA/EIA 568B Standard | 1- orange/white 2-orange 3- green/white 4- blue 5-blue white 6- green 7- brown/white 8- brown |
| Plenum Cabling | cabling in the roof to keep the room cold for the computers. used for safety reasons so it doesn’t give of black smoke. |
| omni-directional | directs the signal in all directions |
| Uni-Directional | directs the signal in one direction. must be exact when positioning. |
| DCF | distributed coordination Function functions as a CA method that controls access to the physical medium. |
| SSID BROADCASTS | continuous announcement by a wireless access point that transmits its name, or ssid, so that it is discoverable by wireless devices searching for a network connection Can be referred as a beacon. |
| PHYSICAL BUS TOPOLOGY | Where all the nodes are connected in a linear format and T-connectors connect each node directly. Slow transmission rate 10base2 / 10 Mgbs uses thin-net wiring |
| PHYSICAL STAR | Using central connectivity device, such as a switch , which individual physical connection to each node if the central unit goes down the whole system goes down |
| PHYSICAL MESH | each node is directly connected to each other. Allows nodes to communicate at the same time. Dedicated links with other nodes(no congestion on the line so data travels fast) very reliable (no nodes can be isolated) very expensive |
| PHYSICAL RING | Each node is connected to the two nearest nodes: the upstream and downstream neighbors. The flow is uni-directional |
| HYBRID | Exhibits the characteristics of one or more topologies |
| Logical Ring topology | Used in token ring. Used to connect to mainframes traditionally. Send data out, or takes it in and works in a ring formation |
| Logical Star | Common in LAN's |
| Logical Bus | Data is sent all at the same time regardless of the physical wiring. Data flows in a single, continuous stream from the sending node to all other nodes, the medium is shared Uses hubs |
| list the components to a mac address | The MAC address is a 6 digit address. the first three digits are the manufacturers code and the last three are unique to the computer |
| 10base-2 what is the IEEE SPECS, MEDIUM, AND DISTANCE? | IEEE: 802.3A M: THINnet COAX D: 185(M) |
| 10BASE-5 what is the IEEE SPECS, MEDIUM, AND DISTANCE? | IEEE: 802.3 M: THICKnet COAX D: 500M |
| 10BASE-T what is the IEEE SPECS, MEDIUM, AND DISTANCE? | IEEE:802.3i M:CAT-5 UTP D:100M |
| 10BASE-F what is the IEEE SPECS, MEDIUM, AND DISTANCE? | IEEE: 802.3J M: FIBER D: 2 000 |
| 100 BASE -T what is the MEDIUM, AND DISTANCE? | M: CAT 5 UTP D: 100M |
| 100 BASE -T4 what is the MEDIUM, AND DISTANCE? | M:CAT3, 4 OR 5 UTP D: 100 |
| 100 BASE -TX what is the MEDIUM, AND DISTANCE? | M: CAT5 UTP OR STP D: 100 |
| 100 BASE -FX what is the MEDIUM, AND DISTANCE? | M: MULTI-SINGLE MODE FIBER D: 412(HALF DUPLEX) 2 000(FULL DUPLEX) 15 000-20 000(FULL DUPLEX) |
| BASE-LX | SINGLE MODE -5 000M MULTI-MODE -550M |
| BASE-SX | MULTI-MODE -220M |
| PoE WHAT IS THE IEEE AND OTHER STANDARDS? | IEEE: 802.3AF(CAT5 OR HIGHER UTP) POWER: 15.4W |
| PoE+ WHAT IS THE IEEE AND OTHER STANDARDS? | IEEE: 802.3AT(BACKWARDS COMPATIBLE W AF) POWER: 25.5W |
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