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Network+ > Chapter 7 (IP addressing) > Flashcards

Chapter 7 (IP addressing) Flashcards

1
Q

Broadcast Address

A

Address used by application and hosts to send information to all hosts on a network.

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2
Q

IP address is how many bits?

A

32

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3
Q

The bits in an IP address is divided in four sections call what?

A

An octet

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4
Q

The IP addressing scheme is _______ as opposed to _________

A
  1. structured/hierarchical

2. flat or non hierarchical

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5
Q

Advantage and reason for hierarchical addressing scheme?

A
  1. it can handle a lot of addresses.

2. good for routing.

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6
Q

IP addressing is structured with what components?

A

network and host or network, subnet and host.

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7
Q

“Network address”

A

aka: network number. Uniquely identifies each network.

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8
Q

Function of the host address?

A

Uniquely identifies each machine on a network.

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9
Q

Two components of a IP address?

A
  1. Network

2. Host

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10
Q

In class A, B and C how many bits are used for the network address and how many for host?

A 
A = 8 bit for network 24 bits for hosts
B = 16 bits for network, 16 for hosts
C = 24 bits for network and 8 for hosts.
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11
Q

The first bit of a Class A network address must always be?

A

Off. 0.

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12
Q

Actual usable class a network addresses?

A

126

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13
Q

Network address of all 0s means?

A

this network or segment.

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14
Q

Network address of all 1s means?

A

all networks

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15
Q

Host address of all 0s?

A

Network address or any host on specified network

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16
Q

Host address of all 1s? eg: 128.2.255.255

A

All hosts on a specified network 128.2

17
Q

Entire IP address set to 1 means? eg: 255.255.255.255

A

Broadcast to all hosts on the current network.

18
Q

Each class A address has how many bytes for the host address?

A

3

19
Q

Class B address of 172.16.30.56. Which part is host with part is network address?

A
  1. 16 is the host

30. 56 is the network address

20
Q

In a Class B network, the RFC states what about the first and second bit?

A

1st must always be on.

2nd must always be off.

21
Q

In a Class C address, the first 3 bit positions are always what?

A

110

22
Q

Class B network range?

A

128-191

23
Q

Class C network range?

A

192-223

24
Q

What class is network address 224?

A

D

25
Q

What class is network address 255?

A

E

26
Q

Reserved Private IP addresses for Class A

A

10.0.0.0-10.255.255.255

27
Q

Reserved Private IP addresses for Class B

A

172.16.0.0-172.31.255.255

28
Q

Reserved Private IP addresses for Class C

A

192.168.0.0-192.168.255.255

29
Q

Are private IP addresses routable through the Internet?

A

no

30
Q

What is NAT

A

process where a network device, usually a firewall, assigns a public address to a computer (or group of computers) inside a private network. The main use of NAT is to limit the number of public IP addresses an organization or company must use

31
Q

Default IP address range for APIPA

A

169.254.0.1-169.254.255.254

32
Q

Characteristics of Layer 2 broadcast?

A

Only go out on a LAN. Not past the LAN boundary…the router.

33
Q

Rule of Thumb when setting up a corp network, regardless of how small, what class network should you use?

A

Class A. Gives you the most flexibility and growth options. (p.197)

34
Q

CIDR

A

Classless Internet Domain Routing.

a method for allocating IP addresses and routing Internet Protocol packets.

35
Q

Layer 2 broadcast AKA

A

Hardware broadcast

36
Q

Char of Layer 3 broadcast

A

Broadcast is meant to reach all hosts on a broadcast domain. (Have all their bits on.)

37
Q

Good example of a Layer 3 broadcast?

A

An ARP request. “If you are the owner of IP address xxx.xxx.xxx.xxx please forward your MAC addy to me”

38
Q

Char of a Unicast.

A

communication where a piece of information is sent from one point to another point. In this case there is just one sender, and one receiver.

39
Q

Char of a Multicast address

A

the delivery of a message or information to a group of destination computers simultaneously in a single transmission from the source

Network+ (8 decks)

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