Term
| The layers of the OSI model (from bottom) |
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Definition
Physical, Data Link, Network, Transport, Session, Presentation, Application
[Please Do Not Throw Sausage Pizza Away] |
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Term
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Definition
| TRANSPORT; TCP/UDP; Port Numbers |
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Term
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Definition
| NETWORK; IP; Routing, Logical Addressing |
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Term
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Definition
| DATA-LINK; Physical Addressing; Error Checking |
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Term
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Definition
| PHYSICAL; Physical Data Signals |
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Term
| The layers of the DOD model (from bottom) |
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Definition
| Network Access, Internet, Transport, Application |
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Term
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Definition
First Octet: 1-126
Subnet Mask: 255.0.0.0 (/8) |
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Term
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Definition
First Octet: 128-191
Subnet Mask: 255.255.0.0 (/16) |
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Term
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Definition
First Octet: 192-223
Subnet Mask: 255.255.255.0 (/24) |
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Term
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Definition
A: 10.0.0.0 - 10.255.255.255
B: 172.16.0.0 - 172.31.255.255
C: 192.168.0.0 - 192.168.255.255
=================================
LoopBack: 127.x.x.x
AutoConfig: 169.254.x.x |
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Term
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Definition
| "Reliable", "Connection-Oriented", uses Acks, guaranteed delivery |
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Term
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Definition
| "Unreliable", "Connectionless", Just sends it out toward the remote host and then forgets about it; no guarantee of delivery |
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Term
| The TCP Three Way Handshake |
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Definition
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Term
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Definition
| Carrier Sense Multiple access/Collision Detection |
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Term
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Definition
| 48bits: 12*4bit hexadecimal digits |
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Term
Usable Dist of:
CAT5
Multi-Mode fibre
Single-Mode fibre |
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Definition
0m - 100m
275m - 1600m
1600m - ... |
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Term
| When to use a Crossover cable |
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Definition
Like Devices:
Router-Router
Swith/Hub-Switch/Hub
Host-Host
Router-Host |
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Term
| When to use a Straight-through cable |
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Definition
Unlike Devices:
Router-Switch/Hub
Host-Switch/Hub |
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Term
| How Ethernet matches up to OSI model, from bottom |
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Definition
PHYSICAL: cabling (i.e. CAT5, Fiber, wireless)
DATA LINK:
-MAC addresses;
-LLC: Dictates which direction for the data to go into the NETWORK layer |
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Term
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Definition
Employed within a single COLLISION DOMAIN.
-Hosts listen to the network and only transmit when no one else is transmitting
-If two hosts transmit at the same time, all hosts must wait a random time before transmitting again to avoid a collision. |
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Term
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Definition
| Generally created by HUBS. ALL messages are sent to ALL hosts. One host can communicate at a time. Half Duplex |
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Term
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Definition
| Split collision domains, significantly reducing collisions. |
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Term
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Definition
Multi-port bridges;
Each port is its own collision domain.
Full duplex.
Operates at Layer 2 - Data Link |
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Term
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Definition
looking from bottom of plug: Gs,G,Os,BL,BLs,O,BRs,BR
[image]
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Term
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Definition
Os,O,Gs,BL,BLs,G,BRs,BR
[image] |
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Term
| Config for Connecting to Serial Port |
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Definition
Baud:9600
Data Bits: 8
Parity: None
Stop Bits: 1
Flow Control: None |
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Term
| Switch physical light indicator modes |
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Definition
System: green good, amber bad
RPS: "Redundant Power Supply"
STAT: Each interface will light up and blink when connected/handling data
UTIL: All lights are used as a percentage scale of activity
DUPLEX: On for full duplex; Off for half duplex
SPEED: On for 100Mbit, Off for 10Mbit |
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Term
| The process of finding/joining a wireless network |
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Definition
-client issues probe
-access points respond with a beacon
-client associates with its chosen ssid
-access point adds client MAC address to association table |
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Term
| The DHCP process between client and server |
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Definition
DHCP DISCOVER --> (BROADCAST)
DHCP OFFER <-- (UNI)
DHCP REQUEST --> (UNI)
DHCP ACK <-- (UNI) |
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Term
| how the TCP window size is determined |
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Definition
| the sender increases the window size until there is a failure. This causes the window size to decrease. |
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Term
| what the TCP window size is |
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Definition
| The maximum number of packet the sender can send without receiving an acknowledgement. |
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