Podcast
Questions and Answers
Which IPv6 address type cannot be routed outside of its subnet?
Which IPv6 address type cannot be routed outside of its subnet?
- Global unicast address
- Link-local address (correct)
- Loopback address
- Unique local address
What is required for an IPv6-enabled router interface at a minimum?
What is required for an IPv6-enabled router interface at a minimum?
- A self-generated loopback address
- A global unicast address
- An IPv4 address
- A link-local IPv6 address (correct)
How many bits can be used for subnetting if your organization has been assigned a /48 IPv6 prefix?
How many bits can be used for subnetting if your organization has been assigned a /48 IPv6 prefix?
- 16 bits (correct)
- 8 bits
- 64 bits
- 32 bits
What is the most compressed form of the IPv6 address 2001:0db8:0000:abcd:0000:0000:0000:0001?
What is the most compressed form of the IPv6 address 2001:0db8:0000:abcd:0000:0000:0000:0001?
What parts compose an IPv6 global unicast address?
What parts compose an IPv6 global unicast address?
What does a successful ping to the IPv6 address ::1 indicate?
What does a successful ping to the IPv6 address ::1 indicate?
Which of the following is NOT true about IPv6 addresses?
Which of the following is NOT true about IPv6 addresses?
What is the purpose of the interface ID in an IPv6 global unicast address?
What is the purpose of the interface ID in an IPv6 global unicast address?
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?
What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?
What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64?
What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64?
What type of address is automatically assigned to an interface when IPv6 is enabled on that interface?
What type of address is automatically assigned to an interface when IPv6 is enabled on that interface?
Which IPv6 network prefix is only intended for local links and cannot be routed?
Which IPv6 network prefix is only intended for local links and cannot be routed?
What is the purpose of the command ping ::1?
What is the purpose of the command ping ::1?
What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94/64?
What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94/64?
What is the network address for the IPv6 address 2001:DB8:AA04:B5::1/64?
What is the network address for the IPv6 address 2001:DB8:AA04:B5::1/64?
Flashcards
Global Unicast Address
Global Unicast Address
An IPv6 address that is unique to a specific network and can be routed across the internet.
Link-Local Address
Link-Local Address
An IPv6 address used only for communication within the same network segment. It is not routable beyond that subnet.
Loopback Address (::1)
Loopback Address (::1)
An IPv6 address used for communicating with the local host on a device. It is similar to the loopback address in IPv4.
Multicast Address
Multicast Address
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Unspecified Address (::)
Unspecified Address (::)
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Link-Local Address
Link-Local Address
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IPv6 Subnetting
IPv6 Subnetting
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IPv6 Address Compression
IPv6 Address Compression
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What's the most compressed form of IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?
What's the most compressed form of IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234?
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What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64?
What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64?
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What type of address is automatically assigned to an interface when IPv6 is enabled?
What type of address is automatically assigned to an interface when IPv6 is enabled?
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Which IPv6 network prefix is only intended for local links?
Which IPv6 network prefix is only intended for local links?
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What is the purpose of the command 'ping ::1'?
What is the purpose of the command 'ping ::1'?
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What is the interface ID of 2001:DB8::1000:A9CD:47FF:FE57:FE94/64?
What is the interface ID of 2001:DB8::1000:A9CD:47FF:FE57:FE94/64?
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What is the network address for 2001:DB8:AA04:B5::1/64?
What is the network address for 2001:DB8:AA04:B5::1/64?
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Which address type is not supported in IPv6?
Which address type is not supported in IPv6?
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Study Notes
IPv6 Address Compression
- IPv6 addresses can be compressed by removing leading zeros within each hextet and replacing consecutive zero hextets with a double colon (::) only once.
- Example: 2001:0DB8:0000:AB00:0000:0000:0000:1234 compresses to 2001:DB8:0:AB00::1234
IPv6 Prefix and Addresses
- A /64 prefix in an IPv6 address means the first 64 bits represent the network portion.
- Example: 2001:DB8:D15:EA:CC44::1/64 has a network prefix of 2001:DB8:D15:EA::/64.
Automatic IPv6 Address Assignment
- When IPv6 is enabled, an interface automatically receives a link-local address (starting with FE80).
Link-Local IPv6 Addresses
- FE80::/10 prefix is reserved for link-local addresses, which are not routable beyond the local network.
IPv6 Loopback Address
- ::1 is the IPv6 loopback address; pinging it checks the local IPv6 host's internal configuration.
IPv6 Interface ID
- The interface ID in an IPv6 address is the suffix following :: and is part of the last 64bits when a /64 prefix is used. For Instance, the interface ID in 2001:DB8::1000:A9CD:47FF:FE57:FE94/64 is 1000:A9CD:47FF:FE57:FE94
IPv6 Network Address
- The network address for an IPv6 address with a /64 prefix is the address formed by the first 64 bits, followed by zero hextets. For example, the network address for 2001:DB8:AA04:B5::1/64 is 2001:DB8:AA04:B5::/64.
IPv6 Address Types
- IPv6 does not support broadcast addresses.
- Instead, IPv6 uses multicast addresses for similar purposes.
- A global unicast address is assigned by the Internet provider.
- A subnet ID allows segmentation within an organization's internal network.
Minimum IPv6 Router Configuration
- The minimum configuration for an IPv6 router interface is a link-local address.
Required IPv6 Address
- A link-local address (FE80::/10) is mandatory on every IPv6-enabled interface.
IPv6 Global Unicast Address Parts
- A global unicast address typically consists of a global routing prefix (provider-assigned), a subnet ID (organization-assigned), and an interface ID (unique to the host).
Subnetting in IPv6
- With a /48 prefix, there are 16 bits available for creating /64 subnets within an organization without borrowing bits allocated for the interface ID.
IPv6 Address Types: Routability
- Link-local addresses are used only for communication on the local subnet and are not routable.
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Description
This quiz covers essential concepts related to IPv6 addressing, including compression techniques, automatic address assignment, and link-local addresses. Test your knowledge of these important networking principles and how they apply to IPv6 addresses.
