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Networking > IP/Subnetting > Flashcards

IP/Subnetting Flashcards

1
Q

What does this mean /XX

A

CIDR - Classless Inter-Domain Routing or super netting

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2
Q

Inside local address

A

The IP address assigned to a host on the inside network. This is the address configured as a parameter of the computer OS or received via dynamic address allocation protocols such as DHCP. The address is likely not a legitimate IP address assigned by the Network Information Center (NIC) or service provider.

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3
Q

Inside global address

A

A legitimate IP address assigned by the NIC or service provider that represents one or more inside local IP addresses to the outside world.

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4
Q

Outside local address

A

The IP address of an outside host as it appears to the inside network. Not necessarily a legitimate address, it is allocated from an address space routable on the inside.

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5
Q

Outside global address

A

The IP address assigned to a host on the outside network by the host owner. The address is allocated from a globally routable address or network space.

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6
Q

How many IP Address classes are there.

A

5

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7
Q

What is the Class A Range?

What is the default network mask.

A
  1. X.X.X - 126.X.X.X

255. 0.0.0

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8
Q

What is the Class B Range?

What is the default network mask.

A
  1. 0.X.X-191.255.X.X

255. 255.0.0

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9
Q

What is the Class C Range?

What is the default network mask.

A
  1. 0.0.X-223.255.255X

255. 255.255.0.0

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10
Q

What is the Class D Range?

What is the default network mask.

A

224.0.0.0-239.255.255.255

No mask used for multcating

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11
Q

What is the Class E Range?

What is the default network mask.

A

240.0.0.0-255.255.255.255

No mask used for research

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12
Q

What is 0.0.0.0 used for?

A

is a non-routable address used to designate an invalid, unknown or non applicable target.

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13
Q

Loopback address

A

127.X.X.X.

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14
Q

How many private IP ranges are there.

A

4

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15
Q

Class A private range

A

10.0.0.0 - 10.255.255.255

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16
Q

Class B private range

A
  1. 16.0.0 - 172.31.255.255

169. 254.0.0-169.254.255.255

17
Q

Class C private range

A

192.168.0.0-192.168.255.255

18
Q

What is a Subnet Mask

A

used to determine where the network ends and the hosts begins.

19
Q

Formula for finding the number of host

A

2 ^ # of 0 in the host bits.

20
Q

Formula for assignable host

A

2^ # of 0 in the host bits -2.

21
Q

Formula for number of subnets

A

2 ^ # 1 in last subnet mask.

or 256 - netmask

22
Q

Where is the broadcast in a network

A

The last host address

23
Q

Formula for finding the network ID

A

Doing a bit wise AND on the last subnet mask and IP.

24
Q

Formula for the first usable host

A

network ID + 1

25
Q

Formula for the last usable host

A

broadcast ID - 1

26
Q

Create a subnet chart

A
  1. Create a grid with 3 columns 14 rows.
  2. label the columns: Bits Block Size/Exponents, and Decimal Mask Value
  3. For bits begin at the top with 0 and go to 12
  4. For Block Size/Exponent start at the top with 1 and double.
  5. For the Decimal value column, start at the row that corresponds with block 128 enter 128. For each row going up add the value from the row above block size.
    https: //youtu.be/nVPmCGWokmc
27
Q

How many components are in a IP packet

A

12

With 1 options

28
Q

List all components of the IP version 4 packet format

A 
Version
Header Length
Priority & Type of service
Total length
identification
flags
framented offset
TTL
protocol
header checksum
source IP
Destination IP
*Options
29
Q

Automatic Private Ip address

A

169.254.0.0-169.254.255.255

30
Q

How to find the max subnets

A
  1. Look at the IP address determine its classful mask

2. Include the 1’s after the classful mask in your count of number of subnets.

31
Q

How to find the max host

A
  1. look at the Ip address determine its classful mask

2. Count the number of 0 -2

32
Q

Wilcard mask

A

Is the inverse of the NETWORK mask. and is use to filter or allow data on a cisco router.

subtract the network mask by 255.255.255.255

Networking (19 decks)

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