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A Cloud Guru - Certified Advanced Networking Specialty > Internet Protocol v4 > Flashcards

Internet Protocol v4 Flashcards

1
Q

What is IPv4?

A

The 4th generation of the internet protocol

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2
Q

How many bits in an IPv4 address?

A

32

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3
Q

Into how many octets is an IPv4 divided?

A

4

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4
Q

how many bits per octet?

A

8

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5
Q

Why is an IPv4 address divided into 4 octets?

A

To make it more human readable. Similar to why phone numbers are divided using parenthesis or dashes, etc.

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6
Q

How many IP addresses can an IPv4 address provide?

A

2^32, or 4,294,967,296

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7
Q

how does the network layer determine if an IP address exists on the same network as it does?

A

Using the netmask.

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8
Q

An IPv4 address contains two elements, what are they?

A

network, and host

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9
Q

in a CIDR address, what does the number after the / represent?

A

Total available number of bits that belong to the network

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10
Q

How is a netmask of 255.255.255.0 represented in CIDR notation?

A

/24

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11
Q

How is a netmask of 255.255.0.0 represented in CIDR notation?

A

/16

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12
Q

In binary (the language of IP addresses) what does the following translate to?

00001010

A

10

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13
Q

What does each bit in an octet represtent?

A

128 64 32 16 8 4 2 1

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14
Q

Using the binary reference, to what does the following translate?

128 64 32 16 8 4 2 1
0 1 0 0 0 1 0 0

A

68

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15
Q

Networks are divided into the types? What are they?

A

Class A
Class B
Class C

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16
Q

What is a Class A network?

A

255.0.0.0, or /8

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17
Q

What is a Claass B network?

A

255.255.0.0, or /16

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18
Q

What is a Claass C network?

A

255.255.255.0, or /24

19
Q

What is a classless IP address?

A

One where the network does not not delineate on /8, /16, or /24.

20
Q

What type of IP address is this?

  1. 168.1.2
  2. 255.255.0
A

Class C, or CIDR /24

21
Q

what type of IP address is this?

  1. 145.2.1
  2. 255.0.0
A

Class B, or CIDR /16

22
Q

What type of IP address is this?

  1. 0.0.1
  2. 0.0.0
A

Class A, or CIDR /8

23
Q

What type of IP address is this?

  1. 15.23.3
  2. 255.254.0
A

Classless, CIDR /9

24
Q

What is the broadcast address in any IPv4 address?

A

all ones in the hosts segment of the IP address

25
What is the network address in any IPv4 address?
all zeros in the host segment of the IP address
26
How many IP addresses does a /25 CIDR provide?
128
27
How many IP addresses does a /24 CIDR provide?
256
28
How many IP addresses does a /23 CIDR provide?
512
29
How many IP addresses does a /22 CIDR provide?
1024
30
In CIDR notation, how many IP addresses more does each iteration of 1 provide?
half if iterating up, double if down. /24 = 256 /23 = 512 /22 = 1024
31
What does BGP stand for?
Border gateway protocol
32
Basically, what does BGP do?
A system of peered routers across the internet to find available routing paths. (this is very basic, make sure to do some more research).
33
Can you split one network into multiple networks?
Yes. For example, One /22 can be split into two /22 networks.
34
From a networking perspective (a route table), can multiple networks be merged into one network?
Yes
35
What is it called to merge multiple networks into one on a routing table?
``` There are 4 terms: supernetting Supervise Route summarize Aggregate ```
36
If you wanted to merge four /24 networks into one network on the route table, how would that look? 10.0.32.0/24
10.0.32.0/21, or 255.255.252
37
What is the largest IP Class?
Class A
38
How many IP addresses available in Class A
16,777,214 (probably don't need to know this)
39
in CIDR notation, how would you represent a Class A address?
x.x.x.x/8
40
Why are Class D addresses unavailable?
They are reserved for multicasting
41
Why are Class E addresses unavailable?
They are reserved for research
42
What are the common private address spaces?
10. 0.0.0 / 255.0.0.0 172. 16.0.0 - 172.31.0.0 / 255.240.0.0 192. 168.0.0 / 255.255.0.0
43
How would an organization who deploys private IP addresses onto their devices allows those devices to speak with devices over the internet?
Using Network Address Translation (NAT).
44
Roughly, how does NAT work?
It replaces the source IP on your request packet with that of the public IP address

A Cloud Guru - Certified Advanced Networking Specialty (9 decks)

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