Flashcards in Chapter 2 - Network Installation & Configuration Deck (25)
where is it most often used?
network address translation
translate one set of IP addresses to another set of IP addresses
most often used between a private network and the internet
contrast PAT with NAT
port address translation
to use port numbers to provide address translation for many inside source addresses to one outside source address
PAT-many to one
NAT-one to one
how does it work?
virtual local area network
to solve the problem of subnets being limited by physical location
switches create subnets, these subnets span multiple switches, these kinds of networks are VLANs, and special links called trunks hold all the VLANs
draw a picture that explains the difference between full duplex and half duplex
full: AB, both can send AND receive at the same time
half: A -> OR
tell me the MAC address broadcast address
what is VTP?
what does VTP allow?
VLAN trunking protocol
allows you to create a switch with the role of "server" that you can configure with your VLAN information
Quality of Service
network technique that divides traffic into categories based on the protocol of the traffic, this allows for prioritization
what kind of device does it and what's the point of doing it?
get a copy of network packets from one switch port to another, for the purpose of monitoring the packets and logging them for security
tell me the 2 typical frequencies used by WAP (wireless access point)
what about channels? (3 of them)
why use those channels?
2.4 GHz, 5 GHz
1, 6, 11
because they don't overlap and therefore they are the least likely to interfere with each other
what is SSID?
why would you disable it?
service set ID
for extra security
reproduce table 2.2 wireless standards. (all 802.11)
standard, modulation, frequency, max speed
a - OFDM, 5GHz, 54Mbps
b - DSSS, 2.4GHz, 11Mbps
g - both, 2.4GHz, 54Mbps
n - both, both, 600Mbps
tell me 4 devices you would want to statically configure an IP address for
what is reservation address?
what is "scope"?
when you configure a device to pull the same IP address from a DHCP server every time
the range of addresses that can be assigned to clients
your client got an IP address from your DHCP server. at what point will the client attempt to renew its lease?
when 50% of the lease time has expired
where will you see compatibility issues?
improper placement of a WAP will cause issues with ____, ____, and ____. these things will, in turn, cause what 2 things to happen?
a against b/g/n
signal strength, bounce, and interference
latency of signal, poor connection
interfaces on switches and routers are sometimes referred to as what?
MTU: name and size range for ethernet packets
maximum transfer unit
64 bytes to 1518 bytes
if you don't configure the MTU properly on your router's interfaces, you'll very likely end up with a ____ ____ router.
how can you ensure power to your switches and routers?
use a UPS
un-interruptable power supply
what is SFP?
what is a GBIC?
small form-factor pluggable, its a compact, hot-pluggable transceiver for telecommunications and data communications
gigabit interface converter, its a hot-swappable interface module and is the common standard for gigabit ethernet and fiber channel
you are troubleshooting an IP address. what is an IP address' "other part"?
what does the gateway of a computer or switch determine?
determines how it will send data to a remote network of any kind
for your network to function properly, you must provide a unique address for each ____ and each router ____ on the network.
what is "soho"?
small office / home office
you have a twisted pair cable. what's the max distance you can run it from a switch?
a switch is also a ____ ____.
100 meters (328 feet)
its the area between the ceiling of one story and the floor of the story above it in an office building
in a soho environment, TCP/IP is the most likely protocol because it provides ____ and ____.
communications within the network
facilitates connecting the network to the internet