200-301 · Question #432
A network engineer must configure the router R1 GigabitEthernet1/1 interface to connect to the router R2 GigabitEthernet1/1 interface. For the configuration to be applied the engineer must compress th
The correct answer is B. ipv6 address 2001:db8::500:a:400F:583B. IPv6 address compression involves removing leading zeros and substituting consecutive blocks of zeros with a double colon ::, used only once per address.
Question
Options
- Aipv6 address 2001:0db8::5:a:4F:583B
- Bipv6 address 2001:db8::500:a:400F:583B
- Cipv6 address 2001 db8:0::500:a:4F:583B
- Dipv6 address 2001::db8:0000::500:a:400F:583B
How the community answered
(44 responses)- A18% (8)
- B70% (31)
- C5% (2)
- D7% (3)
Why each option
IPv6 address compression involves removing leading zeros and substituting consecutive blocks of zeros with a double colon `::`, used only once per address.
This option incorrectly compresses `0500` to `5` and `400F` to `4F`, which removes non-leading zeros and changes the value.
The original address 2001:0db8:0000:0000:0500:000a:400F:583B correctly compresses to 2001:db8::500:a:400F:583B. This is achieved by removing the leading zero from `0db8` to `db8`, removing the leading zero from `000a` to `a`, and replacing the two consecutive `0000` blocks with a single `::`.
This option contains a space instead of a colon after `2001` and incorrectly compresses `400F` to `4F`.
This option attempts to use `::` twice, which is invalid in IPv6 address compression, and also contains an unnecessary `0000` block.
Concept tested: IPv6 Address Compression Rules
Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6/configuration/xe-3s/ipv6-xe-3s-book/ip6-addr-cncpt.html
Topics
Community Discussion
No community discussion yet for this question.