ncti | 113 actual questions and answers verified answers 100 correct
ncti
what was the primary driver for development of ipv6
when comparing ipv4 to ipv6
which of the following statements is true
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NCTI | 113 ACTUAL Questions and answers
(Verified Answers) 100% Correct
What was the primary driver for development of IPv6? - Answer✅ To address the
issue of IPv4 address exhaustion.
When comparing IPv4 to IPv6, which of the following statements is true - Answer✅
IPv4 uses a 32-bit address scheme, while IPv6 uses a 128-bit address scheme.
In IPv6-enabled networks, static addressing is no longer allowed. - Answer✅ FALSE
Without IPv4's network address translation (NAT), IPv6 offers simpler packet
construction and better support for peer-to-peer and mobile-to-mobile types of
communications. - Answer✅ TRUE
In IPv6, Quality of Service (QoS) is radically changed, utilizing only the flow label for all
QoS provisioning. - Answer✅ FALSE
Unfortunately, only RIP (Routing Information Protocol) and OSPF (Open Shortest Path
First) are capable of routing IPv6. - Answer✅ FALSE
What size are IPv4 and IPv6 addresses, respectively? - Answer✅ 32-bits, 128-bits.
IPv4 addresses are written in dotted-decimal. Which of these best describes how IPv6
addresses are written? - Answer✅ Hexadecimal notation, dropping leading zeros in
each hextet, using the "::" notation to represent missing all-zero hextets.
IPv6 addresses are written in Binary Coded Decimal (BCD). - Answer✅ FALSE
An example of a single 16-bit "hextet" in an IPv6 address could be shown like this: -
Answer✅ :54a2:.
What is an "IID"? - Answer✅ Interface Identifier.
How large is a typical user-centric IPv6 subnet size, for a single subnet, using CIDR
notation? - Answer✅ /64
What does the notation "2000::/3" mean, in terms of the initial IETF allocation for IPv6
global unicast space? - Answer✅ That global unicast addresses always start with the
first three bits "001" (first 3 bits of the address per the "/3" notation).
, Which of these prefix lengths would be a reasonable assignment for a service provider?
- Answer✅ /32
Which of these prefix lengths would be a reasonable assignment for a small single-
homed commercial enterprise with no more than 15 or 20 networks? - Answer✅ /48.
What is a unique aspect of an "anycast" address? - Answer✅ It is an address
typically assigned to more than one interface, typically on different nodes.
The leftmost 64-bits of an IPv6 unicast address typically describe: - Answer✅ The
location in the IPv6 routing hierarchy of a particular subnet.
The rightmost 64-bits of an IPv6 unicast address typically describe: - Answer✅ The
specific interface on the subnet.
The main types of IPv6 addresses are: - Answer✅ Unicast, anycast, and multicast.
What does the term "ULA" mean? - Answer✅ Unique Local Addresses.
The function of Unique Local Addresses are: - Answer✅ For use within a network
enclave, and not routed or announced to the public Internet.
Link-local addresses come from which part of the IPv6 address space? - Answer✅
FE8::/10.
IPv6 Multicast addresses always fall within what prefix? - Answer✅ FF00::/8.
What kind of unicast address does every IPv6 interface have to have? - Answer✅
Link-local.
EUI-64 construction includes a unique marker for what purpose? - Answer✅ A bit
within the IID (rightmost 64-bits) set to indicate the IID was built from a globally-unique
token.
The scope over which link-local IPv6 addresses must be unique is: - Answer✅ On the
link where the interface is configured.
In the multicast address FF02::1, the "0" describes: - Answer✅ The "flags" for the
address.
Which is an example of an IPv6 multicast address that a router would normally listen
for? - Answer✅ FF02::1 (all nodes multicast, interface scope).
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