Which number grouping is a valid ipv6 address?

Bias-Free Language The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Book Contents Implementing IPv6 Addressing and Basic Connectivity Implementing basic IPv6 connectivity in the Cisco IOS software consists of assigning IPv6 addresses to individual router interfaces. The forwarding of IPv6 traffic can be enabled globally, and Cisco Express Forwarding switching for IPv6 can also be enabled. Basic connectivity can be enhanced by configuring support for AAAA record types in the Domain Name System (DNS) name-to-address and address-to-name lookup processes, and by managing IPv6 neighbor discovery. • • • • • • • • Finding Feature Information Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to Prerequisites for Implementing IPv6 Addressing and Basic Connectivity •...

This question's answers are a I'm having trouble writing a regular expression that matches valid IPv6 addresses, including those in their compressed form (with :: or leading zeros omitted from each byte pair). Can someone suggest a regular expression that would fulfill the requirement? I'm considering expanding each byte pair and matching the result with a simpler regex. I was unable to get @Factor Mystic's answer to work with POSIX regular expressions, so I wrote one that works with POSIX regular expressions and PERL regular expressions. It should match: • IPv6 addresses • zero compressed IPv6 addresses ( • link-local IPv6 addresses with zone index ( • IPv4-Embedded IPv6 Address ( • IPv4-mapped IPv6 addresses ( • IPv4-translated addresses ( IPv6 Regular Expression: (([0-9a-fA-F]:IPV4ADDR # 2001:db8:3:4::192.0.2.33 64:ff9b::192.0.2.33 (IPv4-Embedded IPv6 Address) ) I posted a script on GitHub which tests the regular expression: The following will validate IPv4, IPv6 (full and compressed), and IPv6v4 (full and compressed) addresses: '/^(?>(?>([a-f0-9]))$/iD' Even though validating ip-s could be done as Frank Krueger suggests, this solution is the one that actually answers the question (though I haven't fully tested it yet) as well as if you have many IP-s that you want syntactically test and maybe match for in a line of text, you can't use the IP validation technique. From " (\A([0-9a-f]\Z) It is indeed a code smell; however after taking a look you'll see that each regex is...

Book Title IPv6 Addressing and Basic Connectivity Configuration Guide, Cisco IOS XE Release 3S Chapter Title IPv6 Addressing and Basic Connectivity • (3.0 MB) (1.42 MB) View with Adobe Reader on a variety of devices • (480.0 KB) View in various apps on iPhone, iPad, Android, Sony Reader, or Windows Phone Print IPv6 Addressing and Basic Connectivity Internet Protocol version 6 (IPv6) expands the number of network address bits from 32 bits (in IPv4) to 128 bits, which provides more than enough globally unique IP addresses for every networked device on the planet. The unlimited address space provided by IPv6 allows Cisco to deliver more and newer applications and services with reliability, improved user experience, and increased security. Implementing basic IPv6 connectivity in the Cisco software consists of assigning IPv6 addresses to individual device interfaces. IPv6 traffic forwarding can be enabled globally, and Cisco Express Forwarding switching for IPv6 can also be enabled. The user can enhance basic connectivity functionality by configuring support for AAAA record types in the Domain Name System (DNS) name-to-address and address-to-name lookup processes, and by managing IPv6 neighbor discovery. • • • • • • • Finding Feature Information Your software release may not support all the features documented in this module. For the latest feature information and caveats, see the release notes for your platform and software release. To find information about the features docum...

Question: Which IPv6 address is valid? • A. 2001:0db8:0000:130F:0000:0000:08GC:140B • B. 2001:0db8:0:130H::87C:140B • C. 2031::130F::9C0:876A:130B • D. 2031:0:130F::9C0:876A:130B Explanation: An IPv6 address is represented as eight groups of four hexadecimal digits, each group representing 16 bits (two octets). The groups are separated by colons (:). An example of an IPv6 address is 2001:0db8:85a3:0000:0000:8a2e:0370:7334. The leading O’s in a group can be collapsed using ::, but this can only be done once in an IP address. Exam with this question: Exam with this question:

The most obvious and recognizable difference between IPv4 and IPv6 is the IPv6 address. An IPv4 address is 32 bits and expressed in dotted-decimal notation, whereas an IPv6 address is 128 bits in length and written in hexadecimal. However, there are many other differences between the two protocol addresses. IPv6 includes new address types as well as changes to familiar address types. In this chapter, you will become familiar with reading IPv6 addresses. You will also learn how to represent many IPv6 addresses with fewer digits, using two simple rules. This chapter examines all the different types of IPv6 addresses in the unicast, multicast, and anycast categories. Some addresses, such as global unicast, link-local unicast, and multicast addresses, have more significance in IPv6. These addresses are examined more closely in Chapter 5, “Global Unicast Address,” Chapter 6, “Link-Local Unicast Address,” and Chapter 7, “Multicast Addresses.” Representation of IPv6 Addresses IPv6 addresses are 128 bits in length and written as a string of hexadecimal digits. Every 4 bits can be represented by a single hexadecimal digit, for a total of 32 hexadecimal values (0 16 [0000 2] through f 16 [1111 2]). You will see later in this section how to possibly reduce the number of digits required to represent an IPv6 address. The alphanumeric characters used in hexadecimal are not case sensitive; therefore, uppercase and lowercase characters are equivalent. Although IPv6 address can be written ...

What IPv6 address should I use? Can you have multiple IPv6 addresses? It’s completely normal to have multiple IPv6 addresses on one interface. Every interface with IPv6 is required to have a link-local FE80 address, and there’s an algorithm that defines which address of those multiple addresses to use as source address. How many IPv6 addresses are possible? IPv6 uses 128-bit (2 128) addresses, allowing 3.4 x 10 38 unique IP addresses. This is equal to 340 trillion trillion trillion IP addresses. IPv6 is written in hexadecimal notation, separated into 8 groups of 16 bits by the colons, thus (8 x 16 = 128) bits in total. Is it normal to have 2 IPv6 addresses? Because new addresses are generated regularly the addresses are marked as temporary . A device can have multiple privacy extension addresses if the system is still using an old address when a new address is being generated. The system will keep the old address for as long as necessary. Why does my Iphone have 4 IPv6 addresses? Suffice to say that, if you 4 IPv6 addresses, you are using both Link Local and Global addresses – and your DHCPv6 DHCP server is operating in Stateless mode. What is dual stack IPv4 IPv6? Dual stack means that devices are able to run IPv4 and IPv6 in parallel. It allows hosts to simultaneously reach IPv4 and IPv6 content, so it offers a very flexible coexistence strategy. Benefits. • Native dual stack does not require any tunneling. mechanisms on internal networks. Is IPv6 faster than IPv4? Witho...