Essentials of Networking Flashcards
(31 cards)
Define LAN.
Local Area Network. Computer network within a limited physical area.
Define Ethernet.
A system for connecting multiple computer systems to create a LAN.
How many bytes make up an ethernet frame?
1500 bytes,
What is MAC address?
Media Access Control address. A unquie identifier assigned to every NIC.
Define NIC
Network Interface Controller. Equipment that allows communication with a network.
How long is a MAC address?
48-bit, 12 characters.
Who sets the first 6 characters of a MAC address and what is it refered to as?
OEM ID set by manufacturer.
Windows command to find MAC address?
ipconfig /all
under Physical address
Linux command to find MAC address?
ifconfig
OR
if
What makes up an Ethernet frame?
Destination MAC
Source MAC
DATA BEING SENT
FCS (Frame Check Sequence.)
Acronym:
FCS
Frame Check Sequence.
How does a network hub send data?
Repeats all data to all devices,
Devices deletes data not for itself.
How does a network switch send data?
Rememers MAC addresses for connected devices,
Sends data to only it’s destination.
aka filtering traffic by MAC.
What is a network node?
A connected device to a network.
Do Hubs or Switches provide full bandwidth to nodes and why?
Switches becuase a hub sends data to every node simultaniously where as a switch only sends data to one node that it’s directed to.
How many nodes are switches theoretically limited to?
1024 nodes.
Reality is 20-30
Define WAN
Wide Area Network, a network over large geographic area.
Also connects LAN’s together
How does a router differentiate between devices and LAN’s?
Logical Addressing, a value designated down by the person who sets up the network.
aka IP Addressing
Define Router.
A gateway where LAN’s are connected to become apart of WAN.
What is an IP address?
A logical address that can be set for a device. Used to identify a device on a network.
In the following IP address which parts designates down to LAN?
192.168.4.100
192.168.4.— specifically the “.4.”
In the following IP address which parts designates down to device?
192.168.4.100
The whole address, specifically the “.100”
Another name for a router as seen on systems that can view or controll networks?
Default Gateway
What type of cable is this?
Coaxial
