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CCIE - 03.00 Implement IPv6 > 3.10 - Implement IP version 6 (IPv6) addressing and different addressing types > Flashcards

3.10 - Implement IP version 6 (IPv6) addressing and different addressing types Flashcards

1
Q

What is the length of an IPv6 address?

A

128 bits.

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2
Q

How are IPv6 addresses represented?

A

8 16-bit segments separated by colons.

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3
Q

What are the two rules for compacting IPv6 addresses?

A

Leading 0’s in eash segment do not need to be written and any single, contiguous string of one or more 16-bit segments consisting of all zeroes can be represented with a double colon.

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4
Q

Why is it illegal to use more than one double colon in an IPv6 address?

A

it would cause the result to be ambiguous. You would not be able to tell how many segments are represented.

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5
Q

What is the difference between the IPv6 addresses ::/0 and ::/128?

A

::/0 is a default address and ::/128 is an unspecified address.

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6
Q

What is the part of the unicast IPv6 address that specifies the host?

A

Interface ID

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7
Q

What is the length of the host portion of an IPv6 address?

A

64 bits

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8
Q

What is the length of the Subnet ID portion of the unicast IPv6 address?

A

16 bits

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9
Q

What type of IPv6 address is FF80::/10?

A

Link-Local Unicast

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10
Q

What type of address is 3FFE:204:100:90::1?

A

Global Unicast

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11
Q

What is an anycast address?

A

Represents a service rather than a device in the network

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12
Q

What is a multicast address?

A

Identifies a set of devices

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13
Q

What is the length of the IPv6 header?

A

320 bits or 40 bytes

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14
Q

What is the purpose of the Flow Label field in the IPv6 header?

A

To identify flows of traffic by source/destination addresses and ports

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15
Q

To what field in the IPv4 header does the IPv6 Next Header field correspond?

A

The protocol field

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16
Q

To what field in the IPv4 header does the IPv6 Hop Limit field correspond?

A

Time to Live (TTL)

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17
Q

In what way is the IPv6 Next Header field like the IPv4 Protocol Number field, and in what way is it different?

A

I defines the upper level header is following like IPv4 or if an extension header is following (IPv6 only)

18
Q

How do extension headers make IPv6 packets more efficient?

A

Only header information required is included and new extension headers can be developed.

19
Q

What is the Next Header value of ICMPv6?

A

58

20
Q

What is the significant difference between IPv4 fragmentation and IPv6 fragmentation?

A

Only originating nodes can fragment. Routers do no fragment.

21
Q

What two steps does MAC-to-EUI64 conversion use to derive an Interface ID?

A

It inserts 0xFFFE in the middle of a MAC address then flips the U/L bit (7th bit in the MAC Address) to 1 to create the 64-bit Interface ID from a 48-bit MAC address

22
Q

What is a privacy address?

A

One where the Interface ID is randomly generated.

23
Q

What type of IPv6 address is ::/128?

A

Unspecified

24
Q

What type of IPv6 address is ::1/128?

A

Loopback

25
Q

What type of IPv6 address is FF00::/8?

A

Multicast

26
Q

What type of IPv6 address is FFC0::/10?

A

Site-Local Unicast

27
Q

What type of IPv6 address is 2xxx::/4 or 3xxx::/4?

A

Global Unicast (Currently allocated)

28
Q

What type of IPv6 address is ::/0?

A

Default address

29
Q

How do you recognize an IPv6 global unicast address in binary?

A

the high-order bits are 001

30
Q

What is IPv6 address FF02::1?

A

All nodes multicast

31
Q

What is IPv6 address FF02::2?

A

All routers multicast

32
Q

What is IPv6 address FF02::5?

A

All OSPFv3 routers multicast

33
Q

What is IPv6 address FF02::6?

A

OSPFv3 designated routers multicast

34
Q

What is IPv6 address FF02::9?

A

RIPng routers multicast

35
Q

What is IPv6 address FF02::A?

A

EIGRP routers multicast

36
Q

What is IPv6 address FF02::B?

A

Mobile agents multicast

37
Q

What is IPv6 address FF02::C?

A

DHCP Servers/Relay Agents multicast

38
Q

What is IPv6 address FF02::D?

A

All PIM routers multicast

39
Q

What command enables IPv6 routing?

A

ipv6 unicast-routing

40
Q

What is the command to enable CEF on IPv6?

A

ipv6 cef

CCIE - 03.00 Implement IPv6 (7 decks)

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