Exam 200-150 topic 1 question 23 discussion

Actual exam question from Cisco's 200-150

Question #: 23
Topic #: 1

[All 200-150 Questions]

What are three reasons to migrate from IPv4 to IPv6? (Choose three.)

A. IPv6 eliminates the requirement for NAT.
B. IPv6 includes enough IP addresses to allocate more than four billion IP addresses to every person on earth.
C. IPv6 eliminates the need for VLANs.
D. Hosts can be assigned an IP address without DHCP.
E. Hosts can be assigned an IP address without DNS.

Show Suggested Answer

Suggested Answer: ABD 🗳️
"IPv6 address contains 32 characters vs. 12 in IPv4. This will grant no ip address translation and dynamic changes. We will even don't need NAT! " http://www.ipv6.ru/english/history/goipv6.php
" IPv6 uses a 128-bit address, allowing 2128, or approximately 3.41038 addresses, or more than 7.91028 times as many as IPv4, which uses 32-bit addresses" http://en.wikipedia.org/wiki/IPv6

by snapper at Aug. 22, 2019, 9:58 p.m.

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snapper

5 years, 10 months ago

The statement " Hosts can be assigned an IP address without DHCP." refers to the link-local address and how it can be automatically created from the interfaces MAC address (this is the EUI-64).. For serial interfaces, the link-local address is built using the first Ethernet interface available in the router. There will be no duplicate IP because these IPs (the link-local addresses) are LOCAL to the segment and are not forwarded by the router.

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