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CCNA 200-301 > IPv6 > Flashcards

IPv6 Flashcards

1
Q

How many bits is an IPv6 address?

A

128 Bits

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2
Q

How many 16 bit hexadecimal fields are there in an IPv6 address?

A

8

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3
Q

How could you rewrite this IPv6 Address?

2001:0DB8:0000:0001:0000:0000:0000:0001

A

2001:db8:0:1:0:0:0:1

OR

2001:db8:0:1::1

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4
Q

What does a double colon (::) in an IPv6 address represent?

A

It means there were successive 0 hextet fields in the IPv6 Address

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5
Q

How many double colons can you have in an IPv6 address?

A

1

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6
Q

Rewrite 2001:0db8:0001:0002:0000:0000:FFE8:0001 to shorthand

A

2001:db8:1:2::ffe8:1

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7
Q

What is a common block assigned for a company in regards to an IPv6 address space?

A

/48

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8
Q

What mask should IPv6 hosts have per IPv6 official standards?

A

/64

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9
Q

What hextet is the subnet decided on?

A

the 4th from the left

Example: 2001:db8:1:2::ffe8:1

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10
Q

What do the first 3 hextets represent in an IPv6 address?

A

The Company Portion of the IPv6 Address

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11
Q

What do the last 4 hextets represent in an IPv6 address?

A

The Host Portion of the Address

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12
Q

How many subnets would a normal /64 network be able to use?

A

65,535

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13
Q

Does IPv6 support Broadcast traffic?

A

No

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14
Q

What does IPv6 do to get around not supporting Broadcast traffic?

A

It supports multicast traffic to ALL hosts on the local subnet which is functionally equivalent

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15
Q

How would you configure a manual IPv6 address?

A

ipv6 unicast-routing
int {int}
ipv6 add {add}

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16
Q

How would you verify an IPv6 address?

A

show ipv6 int brief

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17
Q

The first 3 hectets also reflect what about the IPv6 address other than the company portion?

A

It’s the portion of the address that was assigned by the ISP or internet authorities

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18
Q

What is the subnet hextet in this IPv6 address?

2001:db8:FF01:0001::1

A

0001

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19
Q

How does an EUI-64 Address get it’s address?

A

The router is given the company portion of the address by an admin

The router then derives the IPv6 address host portion from the MAC Address

FF:FE is injected in the middle of the host portion to bring it up to 64 bits

7th bit of the host portion is inverted

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20
Q

Scenario:

IPv6 Network Portion: 2001:db8:0:1/64
MAC Address: ca01.2f24.0000

What would be EUI-64 Address?

A

2001:db8:0:1:c801:2fff:fe24:0

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21
Q

Pick out the unique bits in this EUI-64 Address

2001:db8:01:c801:2fff:fe24:0

A

8
FF
FE

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22
Q

Are Unique Local Addresses publicly reachable?

A

No

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23
Q

What range are Unique Local Addresses assigned from?

A

FC00::/7

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24
Q

Link Local Addresses are valid for communications on _________________?

A

That specific link only

25
Q

What range are Link Local Addresses assigned from?

A

FE80::/10 - FEB0::/10

26
Q

What type of communications would Link Local Addresses be used for?

A

Routing Protocol Hello Packets and Updates

27
Q

What type of IPv6 Address is this?

FE80::C801:2FFF:FE24:0

A

Link Local

28
Q

What type of IPv6 Address is this?

2001:db8:01:c801:2fff:fe24:0

A

EUI-64

29
Q

What type of IPv6 Address is this?

2001:DB8:0:1::1

A

Global Unicast Address

30
Q

How would you manually configure an IPv6 Link Local Address?

A
  • R1(config)#int fa0/0
  • R1(config-if)#ipv6 address fe80::1 link-local
31
Q

Convert this IPv6 Shorthand Address to Full Long Hand

fe80::1

A

fe80:0000:0000:0000:0000:0000:0000:0001

32
Q

Is it possible to have two Link Local Addresses be the same in the same IPv6 subnet?

A

Yes

33
Q

How does traffic differentiate where to send traffic if there are multiple identical IPv6 Link Local Addresses

A

The port it’s going out of will be the differentiator here

34
Q

If you want to have two IPv4 addresses on an interface what command must you specify after you add the second IP Address?

A

secondary

35
Q

What protocol is considered Stateful in terms of handing out IP Addresses?

A

DHCP

36
Q

What protocol is considered Stateless in terms of handing out IP Addresses?

A

SLAAC

37
Q

What does SLAAC stand for?

A

Stateless Address Auto Configuration

38
Q

What is sent out by default when a global unicast address is configured on a router interface?

A

Router advertisements that advertise the network prefix

39
Q

What protocol is used when the router advertisements are sent out advertising the network prefix?

A

ICMP messages

40
Q

True or False: Hosts can get their IPv6 addresses without having to use DHCP using SLAAC

A

True

41
Q

True or False: The router tells the host which subnet to generate its IPv6 Address on?

A

True

42
Q

True or False: The router does not tell the host which default gateway to use

A

False. The router will tell the host to use itself as the default gateway

43
Q

True or False: The PC can learn it’s DNS server through SLAAC?

A

False. It still has to use a DHCP Server for this

44
Q

Until a host has an IPv6 address what address will it have when sending out traffic?

A

::

45
Q

What does** ::** stand for when it comes to SLAAC and IPv6 addressing?

A

:: is the unspecified or unknown address

46
Q

What the default route for any any with IPv6 Addressing?

A

::/0

47
Q

What does ::/0 compare to with IPv4 routing and addressing?

A

0.0.0.0 0.0.0.0

48
Q

True or False: :: is used as the source address when a host is trying to acquire an address

A

True

49
Q

What is IPv6’s version of ARP?

A

Neighbor Discovery

50
Q

What does Neighbor Discovery use rather than ARP Replies and Requests?

A

ICMP neighbor solicitations and neighbor advertisements

51
Q

What command would verify IPv6 neighbors?

A

show ipv6 neighbors

52
Q

True or False: You can’t have an IPv4 address along with IPv6 address on one interface on a router.

A

False. You can if it’s a dual stack router.

53
Q

What command do you need to be sure and put in to enable routing for IPv6?

A

ipv6 unicast-routing

54
Q

What version of OPSF supports IPv6?

A

OSPFv3

55
Q

What version of RIP supports IPv6?

A

RIPng (next generation)

56
Q

What version of EIGRP supports IPv6?

A

EIGRP for IPv6

57
Q

Which IPv6 address is the all-router multicast group?

A

FF02::2

58
Q
A

CCNA 200-301 (25 decks)

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