13. Introducing Basic IPv6 Flashcards Preview

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Flashcards in 13. Introducing Basic IPv6 Deck (29)
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1
Q

The number of bits in an IPv6 address.

A

128 bits

2
Q

List four IPv4 address exhaustion workarounds

A
  1. Classless interdomain routing (CIDR)
  2. Variable-length subnet masking (VLSM)
  3. Network Address Translation (NAT)
  4. Private IPv4 address space.
3
Q

Abbreviate the following IPv6 address:

2001:0db8:010f:0001:0000:0000:0000:0acd

A

2001:db8:10f:1::acd

4
Q

Define Multihoming

A

With IPv6, a host can have multiple IP addresses over one physical upstream link.

5
Q

What is the range of IPv6 Global Unicast addresses?

A

2000::/3

6
Q

What is the range of IPv6 Link-local addresses?

A

fe80::/10

7
Q

What is the range of IPv6 Unique-Local addresses?

A

fc00::/7

8
Q

What is the IPv6 Loopback address?

A

::1

9
Q

What is the IPv6 “Unspecified” address

A

:: (all zeros)

10
Q

Which address bits uniquely identify a group ID in an IPv6 multicast address

A

The last 112 bits.

11
Q

List the eight fields in an IPv6 Header

A
  1. Version
  2. Traffic Class
  3. Flow Label
  4. Payload Length.
  5. Next Header
  6. Hop Limit
  7. Source Address
  8. Destination Address
12
Q

What does the Version field in an IPv6 Header do?

A

This 4-bit field contains the number 6 indicating that the header is an IPv6 header.

13
Q

What does the Traffic Class field in an IPv6 Header do?

A

The source node uses this field to mark the priority of the outbound packet.

14
Q

What does the Flow Label field in an IPv6 Header do?

A

This field is used to mark individual traffic flows with unique values. This is to ensure that routers apply an identical Qos to each packet in the same flow.

15
Q

What does the Payload Length field in an IPv6 Header do?

A

This field describes the length of the payload only. Not the length of the entire packet.

16
Q

What does the Hop Limit field in an IPv6 Header do?

A

Specifies the maximum number of hops that an IPv6 packet can take.

17
Q

What does the Source Address field in an IPv6 Header do?

A

This field of 16 octets, or 128 bits, identifies the source of the packet.

18
Q

What does the Destination Address field in an IPv6 Header do?

A

This field of 16 octets, or 128 bits, identifies the destination of the packet.

19
Q

What is SLAAC?

A

Stateless Address Autoconfiguration

20
Q

Command to show IPv6 neighbors in Windows

A

C:\Windows\system32> netsh interface ipv6 show neighbors

21
Q

Which two ICMPv6 types are used for testing IPv6 reachability?

A

ICMPv6 type 128 and ICMPv6 type 129

22
Q

What is the Solicited-Node Multicast address of a device with an IPv6 address of 2001:db8:1001:f:2c0:10ff:fe17:fc0f

A

ff02::1:FF17:fc0f

23
Q

Cisco Command to assign a static IPv6 address using EUI-64

A

Router (config-if)# ipv6 address [ipv6-prefix/prefix-length] [eui-64]

Example

Router (config-if)# ipv6 address 2001:0db8:0:1::/64 eui-64

24
Q

Which command verifies end-to-end transport layer connectivity for HTTP from a PC over an IPv6 path?

A

telnet [IPv6 address} 80

25
Q

What is the global configuration command to enable IPv6 routing on routers?

A

ipv6 unicast-routing

26
Q

What is the range for IPv6 multicast addresses?

A

ff00::/8

27
Q

Translate the following MAC address into the last half of the IPv6 address using EUI-64:
00a1-6789-abcd

A

02a1:64ff:fe89:abcd

28
Q

What does the “Next Header” field in an IPv6 header do?

A

This value determines the type of information that follows the basic IPv6 header.

29
Q

What is the Solicited-Node Multicast MAC address of a device with an IPv6 address of 2001:db8:1001:f:2c0:10ff:fe17:fc0f

A

33:33:FF:17:FC:0F