terms to know 3

Question 1

mGRE

Answer 1

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

Question 2

Smartjack

Answer 2

provide signal conversion, converting codes and protocols (e.g. framing types) to the type needed by the customer equipment.
Loopback capabilities

Question 3

(NFV)

Answer 3

network function virtualization

Question 4

metro-optical

Answer 4

Combine the power of Ethernet and fiber technologies across a metro-/wide-area network

Question 5

Twinaxial

Answer 5

like a coax cable that has just the one pin in the middle but instead it has 2
used in data centers

Question 6

f type connector

Answer 6

the thing that the coaxial cable screws into

Question 7

sfp

Answer 7

used to provide 1gb/s fiber connections or 1 gb/s rj45 connections
Max speed 4.25/gbs

Question 8

sfp+

Answer 8

same as sfp but it uses 16gb/s. common with 10gb ethernet.

Question 9

qsfp

Answer 9

four sfp into one each 1gb/s

Question 10

qsfp+

Answer 10

four sfp+ into one each 10gb/s so 40gb/s

Question 11

CWDM

Answer 11

Coarse wavelength division multiplexing
four different carriers at four different wavelengths

Question 12

DWDM

Answer 12

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

Question 13

loopback address

Answer 13

address to yourself
range is 127.0.0.1 for ipv4
0:0:0:0:0:0:0:1 or ::1 for ipv6

Question 14

default gateway

Answer 14

router that allows you to communicate outside of your local subnet

Question 15

apipa

Answer 15

automatic private ip addressing. only talk to devices on same local network cant talk to internet.

link local address for ipv6 fe80

Question 16

nat

Answer 16

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

Question 17

pat

Answer 17

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.

Question 18

slaac

Answer 18

stateless address autoconfiguration.

automatically configures an IPv6 address on an IPv6 host

Question 19

GRE

Answer 19

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.

Question 20

dns hierarchy
what is root dns server

Answer 20

root dns server is top of heirarchy

Question 21

forward lookup

reverse lookup

Answer 21

privide name of website dns gives ip back
provide ip u get website name back

Question 22

community cloud

Answer 22

several organizations share the same resources

Question 23

hybrid cloud

Answer 23

mix of public and private cloud

Question 24

cloud multitenancy

Answer 24

many differernt clients are using the same cloud infrastructure

Question 25

VPC endpoint

Answer 25

virtual private cloud endpoint. direct connection between cloud provider networks.

Question 26

cable modem vs dsl modem

Answer 26

cable modem uses a coaxial cable for split bandwidth.
Digital subscriber line modem is for internet only over telephone lines no rg6(coaxial) cable
asymetric dls (adsl)MOST COMMON vs very high bit rate dsl (vdsl) just speed is the difference

Question 27

rg6 vs rg59

Answer 27

rg6 is used for tv connections outside house. rg59 are used for inside house

Question 28

HVAC

Answer 28

Heating, ventilation, and air conditioning

Question 29

default route

Answer 29

a route when no other route matches the “gateway of last resort”

Question 30

CIFS
NFS

Answer 30

Common internet file system(windows)
Network File system(linux) both associated with NAS