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A+ > Network Configurations > Flashcards

Network Configurations Flashcards

1
Q

ipv4

A
  • 4 numbers separated by dots
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2
Q

class A

A

1-127 first cotet

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3
Q

class B

A

128-191

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4
Q

class C

A

192-223

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5
Q

class D

A

224-239
- no subnet mask
- multicasting

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6
Q

class E

A

240-255
- no subnet mask
- for research/reserved

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7
Q

loopback address

A

127.0.0.1
- creates loopback to host for troubleshoot and testing network protocols

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8
Q

APIPA ( automatic private IP address)

A

uses when device does not have static IP or cannot reach DHCP server
- 169.254.0.0 to 169.254.255.255

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9
Q

DHCP

A

provides ip address to every machine on network and eliminates config errors

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10
Q

scope

A

list of valid ip addresses available within a subnet

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11
Q

DNS

A

helps network clients find website using human-readable hostnames instead of ip addresses

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12
Q

cname

A

points domain to another domain/subdomain

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13
Q

mx records

A

mail exchange
- directs emails to mail server

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14
Q

vlan

A

allows different logical networks to share same physical hardware
- virtual LAN
- provides security and efficiency

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15
Q

VPN

A

extends private network over a public network

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16
Q

site to site vpn

A
  • interconnect 2 sites
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17
Q

client to site

A

client to router instead of router to router

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18
Q

full tunnel

A

routes and encrypts all network requests through VPN back to headquarters
- more secure and common

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19
Q

split tunnel

A

routes and encrypts only traffic bound for headquarters over the VPN and rest goes to internet
- less secure
- better performance

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20
Q

clientless

A

creates secure remote-access tunnel using web browser without requiring software/hardware client
- using things like TLS/HTTPS

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21
Q

ipv6

A
  • larger address space
  • no broadcasts
  • no fragmentation
  • simplified header
  • can coexist with ipv4
  • 4 digits each segment
22
Q

dual stack

A

runs both ipv4 and ipv6 on same network devices

23
Q

tunneling

A

allows existing ipv4 router to carry ipv6 traffic

24
Q

unicast

A

used to identify single address/interface

25
Q

multicast address

A

used to identify a set of interfaces and begins with FF

26
Q

anycast address

A

id set of interfaces so packet can be sent to any member of set

27
Q

SLAAC

A
  • determine current network interface is located on
  • use EUI-64
28
Q

HTTP port

A

80

29
Q

well known ports

A

0 to 1023

30
Q

HTTPS port

A

443

31
Q

telnet port

A

23
- insecure remote control

32
Q

registered ports

A

1024-49151
- used by vendors

33
Q

RDP port

A

3389
- graphical remote control

34
Q

dynamic / private ports

A

49152 to 65525
- used by an apps
- gaming, IM

35
Q

FTP port

A

20, 21
- insecure file transfer
- no encryption

36
Q

SSH port

A

22
- secure remote control of another machine using text-based environment

37
Q

SFTP port

A

22
- secure file transfers

38
Q

SMTP port

A

25
- send emails

39
Q

DNS port

A

53
- converts domain names to IP address

40
Q

DHCP port

A

67, 68

41
Q

POP3 port

A

110
- inbound email

42
Q

NETBIOS port

A

137, 139
- used for file/printer share in windows

43
Q

iMAP

A

143
- retrieving incoming emails, better than POP3

44
Q

SNMP port

A

161, 162
- collect data about network devices and monitor their status

45
Q

LDAP port

A

389
- provide directory services to network

46
Q

SMB port

A

445
- windows file and printer sharing

47
Q

TCP

A

connection-oriented protocol
- transfer segments across network
- reliable with 3 way handshake
- SSH, HTTP, HTTPS

48
Q

UDP

A

connectionless
- unreliable and transmits segments called datagrams
- good for audio and video streaming, DHCP, TFTP

49
Q

TFTP port

A
  • 69
  • connectionless protocol that used UDP as its transport
50
Q
A

A+ (21 decks)

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