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networking Flashcards

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1
Q

layers of the osi model

A

apllication
presentation
session
transport
network
datalink
physical

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2
Q

layer 7 of osi

A

application

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3
Q

layer 6 of osi

A

presentation

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4
Q

layer 5 of osi

A

session

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5
Q

layer 4 of osi

A

transport

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6
Q

layer 3 of osi

A

network

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7
Q

layer 2 of osi

A

data link

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8
Q

layer 1 of osi

A

physical

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9
Q

physical layer

A

moving data from one system to another such as cabeling radio waves central box

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10
Q

nic

A

network interface card

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11
Q

mac

A

media access control

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12
Q

waht is a mac address?

A

a unique identifier with a 48 bit value like a telphone number for the nic

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13
Q

what is a frame ?

A

chunk of data that moving accors a netowork that encapsulates the data

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14
Q

encapsulate

A

wrapping up kind of like putting in a box

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15
Q

what makes up a frame

A

recepents mac address, senders mac adress , type , data , fcs

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16
Q

type field of a fram

A

indicates whats encapsuilated in the frame

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17
Q

data field in a frame

A

contains the data in the frame

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18
Q

fcs

A

frame check sequence

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19
Q

fcs in a frame

A

verify the data arrived intact

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20
Q

network switch

A

filters traffic by mac address

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21
Q

how does the network obtain destinitaion mac address ?

A

by usuing a braoadcast

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22
Q

how does a frame get from one system to another ?

A

sends data to nic,
nic builds the frame to drasport that data to the other nic
creates the frame and adds the fcs
fills out the mac addresses
then sends fram through the network
goes to switch
the switch sends to destination address
the desitination nic recivves frame breaks it down and sends data to the software

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23
Q

whata layer deals with mac addresses

A

the data link layer

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24
Q

LLC

A

Logical link control

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25
logical link control
handles mutiple network protocols and prived flow control
26
media access controll
creates and address the frame
27
data link layer
data is broken into frames and used with the mac address and nic the data is prepared to send off too the destiniation
28
subnet
a netowrk broken up into smaller networks
29
network protocol
set of communication rules
30
tcp/ip
several network protocols that are designed too work together
31
tcp/ip is also known as?
the protocal suite
32
tcp
transmission control protocal
33
IP
internet protocol
34
what layer handles createing packets
3 network layer
35
internet protocol
primary address protocol fort tcp/ip make sure a peice of data gets too where it needs too on the network by giving a unique identifier called an i.p address
36
ip address is known as a ?
logical address
37
router
connects all of the subnets to make the network
38
what address do routers use?
ip addresses
39
what makes up a packet?
destinitaion ip address source ip address and data
40
do packets make up frames? or do frames make up packets
a frame encapsulates a packet
41
segmentation
taking chuncks of data and seperating them into packets and eventually frames
42
transport protocal
breaks chinks into sements or datagrams gives each sement a sequence number
43
transport layer
segmentation and reassembly of the data
44
sesssion layer
initiates sessions accepts incoming session and nopens and closes exiting session responsible for connecting applications too applications
45
presentation layer
translates data from lower layers into a format used by the application layer
46
API
APplication programmin interfaces
47
application layer
the code behind the application that makes it network aware
48
4 layers of the tcp/ip model
application, transport, internet, link/ network interface
49
which model is a descriptive model
tcp/ip
50
which model is a prescriptive model
osi
51
link layer of tcp/ip
the first 2 layers of osi data link and physical
52
internet layer
deals with pure ip packets network layer in osi
53
transport layer
session and transport layer of the osi model defines order functions such as connection oriented an connectionless communication
54
imap
internet message access prtocol
55
internet message access protocol
used for sendiong email messages
56
connection oriented
there is a connection between the two computers one makes sure one is ready before sending data
57
connection less communication
the sender just sends the data and hopes the destination is ready
58
tcp segment
destination port, source port, sequence number , checksum, flags , acknowledgment , data
59
data comes from appliocation layer transport layer breaks down the data into chunks adding port and sequence numbers creating the tcp segment then the internet layer creates a ip packet
60
tcp/ip application layer
combines feature from apllication presentation and session layers from osi
61
tcp/ip format for going from one computer too another
application creates the data transport breaks down the data into tcp or udp datagrams the internet layer adds the ip addressing and creates the ip packes the link layer wrpas the ip packet into a frame with the mac address
62
neywork topolgie
way of connecting computers together
63
what are the different topologies
bus, ring, star , hybrid and mesh
64
bus topology
usuing a single cable connected all the computers in a line data went through the entire line of computers with terminaters at the ends of the line
65
ring topolgy
connected all computers with a ring of cable data ran from one computer to the next with no end so no need for terminations
66
star topology
centrol conmnection box for all the computers on the network nemiofit of having fault tolerence
67
hyrbid toplogy
any form of network techonology that combines a physical parts with a sinal topology
68
mesh topology
every computer connects too every other computer via 2 or more rotues
69
partially mesheed
at least two machines have redudent connect every machine doesnt have to connect to every computer
70
fully meshed
every computer connecxts to every other computer

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