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42 Cards in this Set
- Front
- Back
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Attenuation |
Loss of power in a signal as it travels from transmitter to receiver |
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Multiplexor |
“A device that allows two or more simultaneous transmissions to be carried on a single communication circuit” |
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Tracert |
Find route from your computer to another computer |
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IEEE |
Institute of Electrical and Electronics Engineers |
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Encoding |
representation of one set of symbols by another set of symbols |
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Ping |
Query another computer to determine if there is a connection |
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OSI model - Go draw it |
OSI, Internet, Function, Protocol, PDU |
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ICANN |
Internet Corporation for Assigned Names and Numbers |
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NRZ |
Non return to zero |
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DNS |
Domain name service. Server name resolution is done using the DNS |
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PCM |
Pulse Code Modulation |
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Codec |
Translate analog voice data into digital form for transmission over digital computer circuits |
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Baud |
Unit of signaling speed |
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Characteristics of useful information |
Quality, complete, timely, Relevant |
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ANSI |
American National Standards Institute. Standards making body responsible for describing coding standards |
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Data flow |
Simplex, half-duplex, full-duplex |
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Parity |
One additional bit is added to each byte in the message |
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Client |
The input/ output hardware device at the other end of a communication circuit. |
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IMUX |
Inverse multiplexer. Breaks down high speed signals into several concurrent lower-speed signals |
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ARP |
Address resolution protocol |
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OSPF |
Open Shortest Path first. Network layer. Routing information protocol |
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UDP |
User datagram protocol. Used to send shorter messages. Established connections on the internet. Alternative to TCP |
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CSMA |
Carrier sense multiple access. MAC protocol. Wait until circuit is free then transmit |
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TCP |
Transmission control protocol. Transport layer |
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DHCP |
Dynamic Host Configuration Protocol. Network layer dynamic addressing protocol |
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Topology - Make the graph |
Bus, Star, Ring |
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Network architecture |
Host-based Client-based Client-server |
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LAP-M |
Link Access Protocol for Modems Only packets with an error are retransmitted |
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SMTP |
Simple Mail Transfer protocol |
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RIP |
Routing information protocol |
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3 layers of a WAN |
Access layer is closest to the user as LANs which are connected to switches in the distribution layer. The distribution layer is a middle-layer connecting the access and core layers. The core layer is the final layer which connects the rest of the backbone to the router. |
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CSMA/CD |
Carrier sense multiple access/ collision detection. Contention based MAC. If NIC detects another signal, NIC jams the transmission |
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CSMA/CA |
Carrier sense multiple access/collision avoidance. Contention based MAC . Each frame is sent using stop-and-wait ARQ |
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Firewall |
Router that examines packets going into and out of a network and restricts access to the organization’s network |
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ESD |
electronic software delivery. Enables network managers to install software on client computers without physically touching each client computer. |
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CIA |
Confidentiality, Integrity, Availability |
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MTBF |
Mean Time Between Failures |
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TCO |
Total Cost of Ownership of the network -. direct and indirect costs |
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IXP |
Internet exchange point |
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DES |
Data encryption standard |
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SLA |
Service level agreement. Exact type of performance and fault conditions that the organization will accept |
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Types of network controls |
Preventative Corrective Detective |
