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IPv6 Flashcards

1
Q

Front

A

Back

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2
Q

What is the size of an IPv6 address?

A

128 bits

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3
Q

How is an IPv6 address written?

A

As eight groups of four hexadecimal digits, separated by colons.

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4
Q

What is the abbreviation rule for IPv6?

A

Omit leading zeros and use :: to compress consecutive zeros once.

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5
Q

What is the loopback address in IPv6?

A

36892

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6
Q

What is the unspecified address in IPv6?

A

::

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7
Q

What is the link-local address prefix in IPv6?

A

FE80::/10

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8
Q

What is the multicast address prefix in IPv6?

A

FF00::/8

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9
Q

What is the global unicast address prefix in IPv6?

A

36586

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10
Q

What is a unique local address (ULA)?

A

FC00::/7 - similar to private IPs in IPv4.

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11
Q

What is the IPv6 equivalent of APIPA (IPv4 169.254.x.x)?

A

Link-local address (FE80::/10)

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12
Q

What is the default route in IPv6?

A

36526

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13
Q

What is SLAAC?

A

Stateless Address Autoconfiguration - allows a host to configure itself automatically.

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14
Q

What is DHCPv6?

A

A protocol used to assign IPv6 addresses and other configuration info.

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15
Q

What is a dual-stack network?

A

A network running both IPv4 and IPv6.

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16
Q

What is tunneling in IPv6?

A

Encapsulating IPv6 packets within IPv4 packets to traverse IPv4 networks.

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17
Q

What is NAT64?

A

A method that allows IPv6-only clients to communicate with IPv4 servers.

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18
Q

What command shows the IPv6 routing table?

A

‘show ipv6 route’

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19
Q

What command assigns an IPv6 address to an interface?

A

‘ipv6 address <address>/<prefix>'</prefix>

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20
Q

What command enables IPv6 routing on a Cisco device?

A

‘ipv6 unicast-routing’

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21
Q

What is EUI-64?

A

Method of generating the interface ID using the MAC address.

22
Q

What is the range of multicast addresses for all nodes?

23
Q

What is the range of multicast addresses for all routers?

24
Q

Can an IPv6 device have multiple addresses?

A

Yes, including link-local, global unicast, and others.

25
What protocol does IPv6 use for neighbor discovery?
ICMPv6
26
What is ND (Neighbor Discovery)?
Replaces ARP, ICMP router discovery, and more in IPv6.
27
What is an Anycast address in IPv6?
An address assigned to multiple devices; the nearest one responds.
28
What is the DHCPv6 Solicit address?
'::' (unspecified address used by clients to communicate with servers)
29
Why must you specify an exit interface when using a link-local next-hop in IPv6?
Because link-local addresses are not globally unique and the router needs to know which interface to use.
30
What is the 'sdm prefer' command used for?
To change the router's SDM template, optimizing resources for features like IPv6, routing, or QoS.
31
32
Front
Back
33
What command enables IPv6 routing on a Cisco device?
ipv6 unicast-routing
34
What type of IPv6 address begins with 'FE80'?
Link-local address
35
What type of IPv6 address begins with 'FF'?
Multicast address
36
What is the typical prefix for a global unicast IPv6 address?
36586
37
What command assigns an IPv6 address to an interface?
ipv6 address
/
38
What command shows the IPv6 interfaces and their addresses?
show ipv6 interface brief
39
What is the IPv6 equivalent of a public IPv4 address?
Global unicast address
40
Can multiple IPv6 addresses be assigned to a single interface?
Yes
41
Which address is automatically assigned to every IPv6-enabled interface?
Link-local address
42
What is the loopback address in IPv6?
36892
43
What is the all-nodes multicast address?
ff02::1
44
What is the all-routers multicast address?
ff02::2
45
What is the purpose of a link-local address?
Used for communication between nodes on the same link
46
Which protocol is used by IPv6 for neighbor discovery?
Neighbor Discovery Protocol (NDP)
47
What is SLAAC in IPv6?
Stateless Address Autoconfiguration
48
How do you statically assign a global unicast IPv6 address to an interface?
Use 'ipv6 address
/' in interface config mode
49
What is the function of 'ipv6 enable'?
Enables IPv6 processing on the interface
50
What is the prefix length equivalent of a subnet mask in IPv6?
It defines the network portion, like /64
51
What is EUI-64?
A method to automatically create an interface ID using the MAC address
52
What does the command 'ipv6 address autoconfig' do?
Enables SLAAC to automatically configure the address

AI CCNA (16 decks)

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