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cyber > networking > Flashcards

networking Flashcards

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
Q

logical link control

A

handles mutiple network protocols and prived flow control

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26
Q

media access controll

A

creates and address the frame

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27
Q

data link layer

A

data is broken into frames and used with the mac address and nic the data is prepared to send off too the destiniation

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28
Q

subnet

A

a netowrk broken up into smaller networks

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29
Q

network protocol

A

set of communication rules

30
Q

tcp/ip

A

several network protocols that are designed too work together

31
Q

tcp/ip is also known as?

A

the protocal suite

32
Q

tcp

A

transmission control protocal

33
Q

IP

A

internet protocol

34
Q

what layer handles createing packets

A

3 network layer

35
Q

internet protocol

A

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
Q

ip address is known as a ?

A

logical address

37
Q

router

A

connects all of the subnets to make the network

38
Q

what address do routers use?

A

ip addresses

39
Q

what makes up a packet?

A

destinitaion ip address
source ip address and data

40
Q

do packets make up frames? or do frames make up packets

A

a frame encapsulates a packet

41
Q

segmentation

A

taking chuncks of data and seperating them into packets and eventually frames

42
Q

transport protocal

A

breaks chinks into sements or datagrams gives each sement a sequence number

43
Q

transport layer

A

segmentation and reassembly of the data

44
Q

sesssion layer

A

initiates sessions accepts incoming session and nopens and closes exiting session
responsible for connecting applications too applications

45
Q

presentation layer

A

translates data from lower layers into a format used by the application layer

46
Q

API

A

APplication programmin interfaces

47
Q

application layer

A

the code behind the application that makes it network aware

48
Q

4 layers of the tcp/ip model

A

application, transport, internet, link/ network interface

49
Q

which model is a descriptive model

A

tcp/ip

50
Q

which model is a prescriptive model

A

osi

51
Q

link layer of tcp/ip

A

the first 2 layers of osi data link and physical

52
Q

internet layer

A

deals with pure ip packets network layer in osi

53
Q

transport layer

A

session and transport layer of the osi model
defines order functions such as connection oriented an connectionless communication

54
Q

imap

A

internet message access prtocol

55
Q

internet message access protocol

A

used for sendiong email messages

56
Q

connection oriented

A

there is a connection between the two computers one makes sure one is ready before sending data

57
Q

connection less communication

A

the sender just sends the data and hopes the destination is ready

58
Q

tcp segment

A

destination port, source port, sequence number , checksum, flags , acknowledgment , data

59
Q

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

A
60
Q

tcp/ip application layer

A

combines feature from apllication presentation and session layers from osi

61
Q

tcp/ip format for going from one computer too another

A

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
Q

neywork topolgie

A

way of connecting computers together

63
Q

what are the different topologies

A

bus, ring, star , hybrid and mesh

64
Q

bus topology

A

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
Q

ring topolgy

A

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
Q

star topology

A

centrol conmnection box for all the computers on the network nemiofit of having fault tolerence

67
Q

hyrbid toplogy

A

any form of network techonology that combines a physical parts with a sinal topology

68
Q

mesh topology

A

every computer connects too every other computer via 2 or more rotues

69
Q

partially mesheed

A

at least two machines have redudent connect every machine doesnt have to connect to every computer

70
Q

fully meshed

A

every computer connecxts to every other computer

cyber (7 decks)

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