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Flashcards in IP Addressing Deck (69)
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1
Q

Private IP address blocks

A
  1. 0.0.0/8
  2. 16.0.0/12
  3. 168.0.0/16
2
Q

IPv4 default route

A

0.0.0.0

3
Q

Loop back address

A

127.0.0.0/8

Directs traffic to same host

4
Q

Link-local addresses

A

169.254.0.0/16

Can be automatically assigned to clients by OS when no IP configuration is available

5
Q

Formula to calculate the # of subneta

A

2 to the n power

Where n = number of bits borrowed

6
Q

128 in binary

/25

A

10000000

7
Q

192 in binary

/26

A

11000000

8
Q

224 in binary

/27

A

11100000

9
Q

240 in binary

/28

A

11110000

10
Q

248 in binary

/29

A

11111000

11
Q

252 in binary

/30

A

11111100

12
Q

254 in binary

/31

A

11111110

13
Q

4 steps to subnetting

A

1) determine how many bits to borrow based on network requirements
2) determine new subnet mask
3) determine subent multiplier
4) list subnets including subnetwork address, host range, and broadcast address

14
Q

2 to the 2nd

A

4

15
Q

2 to the 3rd

A

8

16
Q

2 to the 4th

A

16

17
Q

2 to the 5th

A

32

18
Q

2 to the 6th

A

64

19
Q

2 to the 7th

A

128

20
Q

2 to the 8th

A

256

21
Q

2 to the 9th

A

512

22
Q

2 to the 10th

A

1024

23
Q

how to summarize subnet addresses

A

1) write out networks in binary
2) start w/ left most bit
3) work right and fall all consecutively matching bits
4) when you find a column of bits that do not match, stop. you are at the summary boundary.
5) count # of matching bits, this is subnet mask
6) copy matching bits for summary network address

24
Q

in IPv6 what analogous to a subnet mask

A

prefix

-if prefix length is not on quartet boundary write down value for entire quartet

25
Q

how to abbreviate IPv6 address

A
  • omit leading 0s in any given quartet

- represent 1 or more consecutive quartets of all hex 0s with a double colon (::), but only for one such occurrence

26
Q

IPv6 address

A

128 bit

-represented in 8 quartets of 4 hex digits

27
Q

IPv6 loopback address

A

::1

28
Q

IPv4 to IPv6 transition methods

A
  • dual stacking
  • tunneling
  • NAT-protocol translation
29
Q

What IPv6 address type is commonly used for establishing neighbor relationships for routing protocols?

A

Link local address

30
Q

How to identify a class a address in binary

A

Always begins with a 0

Range for
0 to 127 in first octet

Network.node.node.node

31
Q

How to identify a class b address

A

Always begins with 10 in first octet

Range of 128-191

Network.network.node.node

32
Q

How to identify class c address

A

Always begins with 110 in binary

Ranges from 192-223

Network.network.network.node

33
Q

Private class a address range

A

10.0.0.0 - 10.255.255.255

34
Q

Private class b address space

A

172.16.0.0 - 172.31.255.255

35
Q

Private class c address space

A

192.168.0.0 - 192.168.255.255

36
Q

Easy to determine powers of 2

A

To find 2 to the 6th you can double 2 to the 5 etc.

37
Q

/9 mask

A

255.128.0.0

38
Q

/10 mask

A

255.192.0.0

39
Q

/11 mask

A

255.224.0.0

40
Q

/12 mask

A

255.240.0.0

41
Q

/13 mask

A

255.248.0.0

42
Q

/14 mask

A

255.252.0.0

43
Q

/15 mask

A

255.254.0.0

44
Q

/16 mask

A

255.255.0.0

45
Q

/17 mask

A

255.255.128.0

46
Q

/18 mask

A

255.255.192.0

47
Q

/19 mask

A

255.255.224.0

48
Q

/20

A

255.255.240.0

49
Q

/20 mask

A

255.255.240.0

50
Q

/21 mask

A

255.255.248.0

51
Q

/22 mask

A

255.255.252.0

52
Q

/23 mask

A

255.255.254.0

53
Q

/24 mask

A

255.255.255.0

54
Q

/25 mask

A

255.255.255.128
1 bit on, 7 off
Block size of 128
2 subnets, each with 126 hosts

55
Q

/26 mask

A

255.255.255.192
2 bits on, 6 bits off
Block size 64
4 subnets, each with 62 hosts

56
Q

/27 mask

A

255.255.255.224
3 bits on, 5 off
Block size 33
8 subnets with 30 hosts

57
Q

/28

A

255.255.255.240
4 bits on 4 off
Block size 16
16 subnets with 14 hosts

58
Q

/29 mask

A

255.255.255.248
5 bits on 3 off
Block size 8
32 subnets with 6 hosts

59
Q

/30 mask

A

255.255.255.252
6 bits on 2 off
Block size 4
64 subnets with 2 hosts

60
Q

How to determine number of available subnets

A

2 to the x power

X=number of masked bits in subnet mask

61
Q

How many hosts per subnet

A

2 to the y - 2

Y = number of unmasked bits or 0s in subnet mask

62
Q

What are the valid subnets?

A

256 - subnet mask = block size

Start counting from 0 in increments of the block size until you reach subnet mask value

63
Q

Figure wildcard mask from block size

A

Subtract one from block size

A block size of 16 would have a wildcard of .15

64
Q

NAT inside local address

A

Name of inside source address before translation

65
Q

NAT outside local address

A

Name of destination host after translation

66
Q

NAT inside global address

A

Name of inside host after translation

67
Q

NAT outside global address

A

Name if outside destination host before translation

68
Q

Command to enable IPv6 on router

A

Ipv6 uno cast-routing

69
Q

Command to add ipv6 address to router interface

A

Ipv6 address / [eui-64]