terms to know 3 Flashcards
mGRE
Multipoint generic routing
encapsulation (mGRE)
gre is one device to one device.
mgre is one device hq for example to multiple devices or branches for example
Smartjack
provide signal conversion, converting codes and protocols (e.g. framing types) to the type needed by the customer equipment.
Loopback capabilities
(NFV)
network function virtualization
metro-optical
Combine the power of Ethernet and fiber technologies across a metro-/wide-area network
Twinaxial
like a coax cable that has just the one pin in the middle but instead it has 2
used in data centers
f type connector
the thing that the coaxial cable screws into
sfp
used to provide 1gb/s fiber connections or 1 gb/s rj45 connections
Max speed 4.25/gbs
sfp+
same as sfp but it uses 16gb/s. common with 10gb ethernet.
qsfp
four sfp into one each 1gb/s
qsfp+
four sfp+ into one each 10gb/s so 40gb/s
CWDM
Coarse wavelength division multiplexing
four different carriers at four different wavelengths
DWDM
Link aggregation for Fiber Networks. but keeps wavelength separate at the endpoint
Dense wavelength division multiplexing
mutliplex multiple opctical cable carriers into a single fiber
loopback address
address to yourself
range is 127.0.0.1 for ipv4
0:0:0:0:0:0:0:1 or ::1 for ipv6
default gateway
router that allows you to communicate outside of your local subnet
apipa
automatic private ip addressing. only talk to devices on same local network cant talk to internet.
link local address for ipv6 fe80
nat
network address translation
Allows the internal hosts to communicate on the Internet
* Enables several internal IP addresses to use a single public IP address
* Can be configured on a firewall, a router, or a dedicated device
pat
port address translation
Is a type of NAT configuration
* Is also known as overloading that uses dynamic NAT
* Uses IPv4 addresses along with the port numbers to differentiate which source device made the request for a website. Basically NAT is for one device and PAT is for multiple devices.
slaac
stateless address autoconfiguration.
automatically configures an IPv6 address on an IPv6 host
GRE
generic routing encapsulation
tunneling protocol for wrapping data packets inside secondary data packets in order to set up a direct point-to-point network connection.
dns hierarchy
what is root dns server
root dns server is top of heirarchy
forward lookup
reverse lookup
privide name of website dns gives ip back
provide ip u get website name back
community cloud
several organizations share the same resources
hybrid cloud
mix of public and private cloud
cloud multitenancy
many differernt clients are using the same cloud infrastructure
