Week 8: IPv6 Flashcards

1
Q

What are the advantages of IPv6 over IPv4?

A
  • Larger Address Space
  • Better Header Format
  • New Options
  • Allowance for Extension
  • Support for more security
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2
Q

List the characteristics of IPv6 addresses

A
  • 128 Bits (16 bytes)
  • 2^128 addresses
  • Represented in Colon-Hex format
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3
Q

How is address abbreviation done with IPv6 address?

A
  • Leading Zeros in each group can be omitted

- Groups with consecutive zero value can be replaced by double colon (::) (but only one series can be replaced)

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4
Q

True or False: IPv6 has a subnet mask

A

False, Only CIDR notation

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5
Q

What are the three types of addresses?

A

Unicast
Multicast
Anycast

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6
Q

How is the Address Allocation of IPv6 similar to IPv4?

A

The address space is divided into several blocks of varying sizes for special purposes

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7
Q

True or False: all the blocks for IPv6 are assigned

A

False, most of the blocks are still unassigned & have been set aside for future use

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8
Q

What is the Global Unicast Type Prefix for IPv6?

A

2000::/3

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9
Q

What is the Unique Local Unicast Type Prefix for IPv6?

A

FC00::/7

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10
Q

What is the Link-Scoped Unicast Type Prefix for IPv6?

A

FE80::/10

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11
Q

What is the Multicast Type Prefix for IPv6?

A

FF00::/8

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12
Q

How many bits are allotted for the routing prefix for the Global Unicast Address?

A

48 bits or more

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13
Q

How many bust are allotted for the subnet ID for the Global Unicast Address?

A

16 bits or less

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14
Q

How many bits are allotted for the Interface Identifier for the Global Unicast Address?

A

64 bits

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15
Q

How many bits are allocated for the prefix in an IPv6 Link-Local Address?

A

10 bits

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16
Q

How many bits are allocated for the 0s in an IPv6 Link-Local Address?

A

54 bits

17
Q

How many bits are allocated for the Interface Identifier in an IPv6 Link-Local Address?

A

64 bits

18
Q

What is the Interface Identifier in IPv6 derived from?

A

EUI-64

19
Q

What is Stateless Autoconfiguration (eui-64) used for?

A

Link-Local or Global Unicast Addresses?

20
Q

What occurs in Stateless Autoconfiguration (eui-64)?

A
  • Interface Id is automatically calculated

- Router advertisements (ICMPv6) provides other configuration information

21
Q

What is unique about DHCP in IPv6?

A

DHCP can still be used to allocate IPv6 Address to host, but a host can also configure itself

22
Q

How many bytes are allocated for the Base Header in an IPv6 Datagram?

A

40 bytes

23
Q

How many bytes are allocated for the Payload in an IPv6 Datagram?

A

65,535 Bytes

24
Q

What are the six Extension Header Types for an IPv6 Datagram?

A
  • Hop-by-Hop
  • Source Routing
  • Fragmentation
  • Authentication
  • Encrypted Security Payload
  • Destination