exam questions

Exam 300-420 All Questions

View all questions & answers for the 300-420 exam

Exam 300-420 topic 1 question 27 discussion

Actual exam question from Cisco's 300-420
Question #: 27
Topic #: 1
[All 300-420 Questions]

An architect is creating a migration strategy for a large organization in which the choice made by the application between IPv6 and IPv4 is based on the DNS request. Which migration strategy does the architect choose?

  • A. AFT for public web presence
  • B. host-initiated tunnels
  • C. dual-stack
  • D. site-to-site IPv6 over IPv4 tunnels
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️

Comments

Chosen Answer:
This is a voting comment (?). It is better to Upvote an existing comment if you don't have anything to add.
Switch to a voting comment New
XalaGyan
9 months, 4 weeks ago
Selected Answer: C
The transition is driven by DNS. If a dual-stacked device queries the name of a destination and DNS gives it an IPv4 address (a DNS A Record), it sends IPv4 packets. If DNS responds with an IPv6 address (a DNS AAAA Record), it sends IPv6 packets.
upvoted 2 times
...
XalaGyan
9 months, 4 weeks ago
https://www.juniper.net/documentation/us/en/software/junos/is-is/topics/concept/ipv6-dual-stack-understanding.html The transition is driven by DNS. If a dual-stacked device queries the name of a destination and DNS gives it an IPv4 address (a DNS A Record), it sends IPv4 packets. If DNS responds with an IPv6 address (a DNS AAAA Record), it sends IPv6 packets.
upvoted 1 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
Other
Most Voted
A voting comment increases the vote count for the chosen answer by one.

Upvoting a comment with a selected answer will also increase the vote count towards that answer by one. So if you see a comment that you already agree with, you can upvote it instead of posting a new comment.

SaveCancel
Loading ...
exam
Someone Bought Contributor Access for:
SY0-701
London, 1 minute ago