CCNA Fundamentals Flashcards
TCP/IP
Transmission Control Protocol/ Internet Protocol
TCP/IP model
Application-Arizona
Transport-To
Network-Nancy
Data Link-Drove
Physical-Pete
Application
HTTP, POP3, SMTP
Transport
-TCP, UDP
-Segment
Network
-IP, ICMP
-Packet
Physical/Data Link
-Ethernet 802.3 & 802.11 (wi-fi)
-Frame
-Node builds and forwards frames
HTTP
Hyper Text Transfer Protocol
TCP
Transmission Control Protcol
UDP
User Datagram Protocol
Adjacent-layer interaction on the same computer
On a single computer, one lower layer provides a service to the layer just above. The software or hardware that implements the higher layer requests that the next lower layer perform the needed function.
Same-layer interaction on different computers
how each layer communicates its intended action to its peer on the receiving end of a connection
DDN
Dotted-decimal notation
Encapsulation
Process of putting headers around some data
OSI Model
Application-Art
Presentation-Pretty
Session-Sell
Transport-To
Network-Nancy
Data link-Drove
Physical-Pete
PDU
-Protocol data unit
-OSI uses it
UTP
-Unshielded twisted pair
-transmit over copper
-Suffix T
Ethernet/Physical layer
-Begins 802.3
Fiber-optic connection
-Ethernet nodes to send light over glass fibers in the center of the cable.
-Suffix X
Encoding Scheme
transmitting node changes the electrical signal over time, while the other node, the receiver, using the same rules, interprets those changes as either 0s or 1s.
SFP
Small form-factor pluggable
GBIC
Gigabit Ethernet Interface Converter
straight-through cable
- a cable that connects the wire on pin 1 on one end of the cable to pin 1 on the other end of the cable, pin 2 on one end to pin 2 on the other end, and so on.
-If the endpoints transmit on different pin pairs
Pinout
Refers to the wiring of which color wire is placed in each of the eight numbered pin positions in the RJ-45 connector.
crossover cable
- Ethernet cable that swaps the pair used for transmission on one device to a pair used for receiving on the device on the opposite end of the cable.
- If the endpoints transmit on the same pin pair
Example: In 10BASE-T and 100BASE-TX networks, this cable swaps the pair at pins 1,2 to pins 3,6 on the other end of the cable, and the pair at pins 3,6 to pins 1,2 as well.