SWNE Chapter 8 Flashcards
network
two or more computers connected together
subnetwork and subnets
routers separate subnetworks and subnets, both are a group of computers with the same network ID
subnetwork example
192.168.1.0
192.168.5.0
these are two different subnetworks without a subnet mask
switches
connect computers within a network
routers
connect and track subnetworks
collision domain
group of devices on the same segment that are subject to collisions
Ethernet Carrier Sense Multiple Access/Collision Detection(CSMA/CD)
helps each device determine when they can send data on the network
Virtual LAN VLAN
LAN within a LAN
transmission speed
speed the switch is capable of transmitting at
uplink port
port used on a switch to another switch or to another device
access links
other ports on the switch
link aggregation control protocol (LACP)
forms a single logical channel between devices with multiple physical links
backplane speed
speed of the switch
Chapter 10
Resolving names to IP addresses
name
host names, or NetBIOS names
IP address
assigned to computers NIC’s
MAC Address
the MAC address or physical address uniquely identifies the NIC
Bits
lowest level of data
DNS Domain Name Server
resolves host names to IP addresses
DNS Root Server
13 in the world, knows about which websites are authoritative for .com .org etc
DNS heirarchy
DNS Root Server - refers you to the .com, .org, etc.
DNS Top Level Domain - .com, .org, etc refers to second level DNS
Second Level domain DNS Servers - microsoft.com, refers to training.microsoft.com
Third and lower level domain DNS Server - where it is stored, training.microsoft.com
WINS Windows Internet Name Service
service you can add to a server to resolve NetBIOS names to IPv4 addresses
