IPv4 Special-Purpose Addresses: What Purpose Are They Utilized For Quiz

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Questions and Answers

What is the length of an IPv6 address?

64 bits

128 bits (correct)

32 bits

256 bits

Which notation is used to divide an IPv6 address into eight segments?

Underscores

Hyphens

Colons (correct)

Semicolons

In IPv6, how are leading 0s in each 16-bit segment treated?

Can be omitted (correct)

Are converted to colons

Must be included

Must be doubled

If all bits in a 16-bit segment of an IPv6 address are 0s, what rule must be followed?

At least one 0 must be reserved Signup and view all the answers

What notation is used to represent consecutive 16-bit segments with only 0s in an IPv6 address?

:: Signup and view all the answers

Which type of IPv6 address is used to send data packets from one source to a single destination?

Unicast address Signup and view all the answers

What does an IPv6 address with two double colons (::) signify?

It signifies that the address cannot be restored to the original one. Signup and view all the answers

Which type of IPv6 address is used as the source address of some packets?

Unspecified address Signup and view all the answers

What is the purpose of a loopback address in IPv6?

Used for local loopback Signup and view all the answers

What happens when a packet is sent to an anycast address in IPv6?

It is routed to the nearest interface having that address. Signup and view all the answers

What is the characteristic of a packet destined for a unicast address in IPv6?

Sent to the interface having that unicast address. Signup and view all the answers

According to IPv6 specifications, why doesn't IPv6 define any broadcast address?

IPv6 serves all broadcast application scenarios with multicast addresses. Signup and view all the answers

What is the purpose of the IPv4 address range 127.0.0.0 – 127.255.255.255?

Used for testing and debugging of programs, hardware, protocol, and connections Signup and view all the answers

Which IPv4 range is assigned for private use in Internet space?

10.0.0.0 – 10.254.254.254 Signup and view all the answers

Which IPv4 address is utilized when a DHCP server is not present for configuration?

0.0.0.0 Signup and view all the answers

What is the default subnet mask for Class A IPv4 addresses?

/8 Signup and view all the answers

In IPv4 addressing, what does the network mask represent?

Determines the range of IP addresses within a network Signup and view all the answers

Which range of IPv4 addresses is reserved for Link-Local Addresses?

169.254.0.0 – 169.254.254.254 Signup and view all the answers

Study Notes

IPv6 Addresses

An abbreviated IPv6 address cannot be restored to its original form if it contains two double colons (::)
IPv6 address classification:
- Unicast address: identifies an interface, packet sent to the interface having that unicast address
- Unspecified address: 0:0:0:0:0:0:0:0/128, or ::/128, used as the source address of some packets
- Loopback address: 0:0:0:0:0:0:0:1/128, or ::1/128, used for local loopback
Multicast address: identifies multiple interfaces, packet sent to all interfaces joining the corresponding multicast group
Anycast address: identifies a group of network interfaces (usually on different nodes), packet routed to the nearest interface having that address

IPv4 Addresses

Private-use of Internet Space: 10.0.0.0 – 10.254.254.254, 172.16.0.0 – 172.16.254.254, 192.168.0.0 – 192.168.254.254
Link-Local Addresses: 169.254.0.0 – 169.254.254.254, used for testing and debugging
Subnet mask: determines which portion of an IP address identifies the network and which portion identifies the host
Class A, B, C default masks:
- Class A: 255.0.0.0 (/8)
- Class B: 255.255.0.0 (/16)
- Class C: 255.255.255.0 (/24)

IPv4 and IPv6 History

IPv4 exhaustion: IANA announced the allocation of its last 4.68 million IPv4 addresses to five Regional Internet Registries (RIRs) around the world on February 3, 2011
IPv6: became a Draft Standard for the IETF in December 1998, ratified as an Internet Standard on July 14, 2017
IPv6 address length: 128 bits, divided into eight segments, each containing 16 bits expressed in hexadecimal notation

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Description

Test your knowledge of IANA IPv4 special-purpose addresses such as Loopback/Localhost, Default Network, Network Broadcast, and Private-use IP spaces. Learn about their usage in testing, debugging, routing internet datagrams, and broadcasting.