CCNA > IP Addressing > Flashcards

Flashcards in IP Addressing Deck (69)
1
Q

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

A

127.0.0.0/8

Directs traffic to same host

4
Q

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
3) determine subent multiplier

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

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

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

A

128 bit

-represented in 8 quartets of 4 hex digits

27
Q

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

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

A

10.0.0.0 - 10.255.255.255

34
Q

A

172.16.0.0 - 172.31.255.255

35
Q

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

A

255.128.0.0

38
Q

A

255.192.0.0

39
Q

A

255.224.0.0

40
Q

A

255.240.0.0

41
Q

A

255.248.0.0

42
Q

A

255.252.0.0

43
Q

A

255.254.0.0

44
Q

A

255.255.0.0

45
Q

A

255.255.128.0

46
Q

A

255.255.192.0

47
Q

A

255.255.224.0

48
Q

/20

A

255.255.240.0

49
Q

A

255.255.240.0

50
Q

A

255.255.248.0

51
Q

A

255.255.252.0

52
Q

A

255.255.254.0

53
Q

A

255.255.255.0

54
Q

A

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

55
Q

A

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

56
Q

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

A

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

59
Q

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

61
Q

How many hosts per subnet

A

2 to the y - 2

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

A

Name of inside source address before translation

65
Q

A

Name of destination host after translation

66
Q

A

Name of inside host after translation

67
Q

A

Name if outside destination host before translation

68
Q

Command to enable IPv6 on router

A

Ipv6 uno cast-routing

69
Q

A