22640400
Description
Flashcards by Jessica Rizo, updated more than 1 year ago
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Created by Jessica Rizo
almost 4 years ago
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| Question | Answer |
| What is a repeater? | Repeaters extends a network connection. It receives a signal, reconstructs it, and resends it to another interface. |
| Can a repeater convert from one type of interface to another? | Yes |
| What is a hub? | A hub has multiple ports that it repeats information through each |
| What is the difference between a repeater and a hub? | Repeaters only send data through a single interfaces whereas a hub sends it out through multiple interfaces |
| A hub sends data at half duplex. True or false | True. It can only send data at one port at a time |
| What is a bridge? | A bridge is used to make forwarding decisions based on MAC address for hubs. It would look at the MAC addresses of each device and send whatever information to that device. Decisions in software |
| What are switches? | Switches are bridges but done with hundreds of ports and interfaces. Bridging done in hardware. Decisions based on data link address |
| What is an unmanaged switch? | Plug 'n play with little configuration. All devices would automatically communicate across the VLAN |
| What is a managed switch? | Has more configuration tools. Can prioritize what information gets sent, connects to other switches, redundancy support, and port mirroring for troublshooting |
| What is a router? | Makes forwarding decisions based on destination IP address. Can be integrated into switches. Connects different types of topologies: WAN, LAN, ethernet copper connection, ethernet fiber connection. |
| What is a wireless access point(WAP)? | WAP is a modern bridge: extends wired network to wireless network. Makes forwarding decisions based on MAC address |
| What is a cable modem? | Usually sent by a cable television provider that sends internet through the same cabling you have for your television |
| What is a DSL modem/ | DSL offers data through the same cabling for the telephone. |
| What is a PoE switch? | Usually a functionality marked on a switch that offers power throught the ethernet as well |
| what is Ethernet over Power (EOP)? | Offers Ethernet through the power cables. |
| How fast does a cable modem transmit data? | 4Mbits/s-250Mbits/s |
| How much does a DSL modem transmit? | 52 Mbits/s downstream 16Mbits/s upstream |
| How fast does a Satelite transmit? | 50Mbits/s downstream 3Mbits/s Upstream |
| What is the latency for Satelite? | 250ms up and down |
| What is latency not good for? | Not good for application speeds |
| What type of connection is Satelite? | non-terrestrial |
| What is tethering effectively turning a cell phone into? | A wireless router |
| What is mobile hotspot using? | 802.11 connectivity |
| What are two examples of LAN? | Ethernet and 802.11 wireless |
| What are 4 examples of PANs? | Private Network, Bluetooth, NFC, IR |
| What is NFC and an example of it ? | Near Field Communication; tap pay |
| What is the difference between a WAN and a MAN? | Not much but the implication is that MAN's are provided by IT city staff or Campus staff whereas WAN's are provided through a phone company or internet provider. |
| What is WMN associated with? | "Internet-of-things" |
| Are devices on WMN redundant? | yes. They can self heal so if one device fails, the data can be retreived by other devices. |
| What does WMN use? | 802.11, Zigbee, Z-wave |
| What is one advantage of using Satelite? | If you reside in a remote area. Most connection devices need you to be within a certain distance of the central office to get connectivity. Satelite can offer connectivity without that restriction. |
| What is a WAN really? | A connection of LANs |
| What are Servers? | Networks use Servers to carry out processes to balance out work load |
| What is a single server? | A server that does certain services and only those services. |
| What is a multipurpose servers? | They can do multiple services on top of their own services. |
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