Deck 6: Neighbors Discovery in Ipv6

Question 1

In the ICMPv6 Router Solicitation message, which field is an unused field that is set to 0 by the source node and ignored by the destination node?

A)Reserved
B)Options
C)Checksum
D)Type

Answer 1

A

Question 2

Neighbor Discovery uses five ICMPv6 message types.

Answer 2

True

Question 3

ND takes over the functions that ARP and Reverse ARP handled in IPv4.

Answer 3

True

Question 4

ND makes use of multicast addresses. Which multicast address is expressed using ff02::1?

A)all nodes
B)all routers
C)all proxies
D)all domains

Question 5

Home Agents may include the Home Agent Information option in their Router Advertisement messages, but it should not be included if the Home Agent (H) bit is not set.
Indicate the answer choice that best completes the statement or answers the question.

Question 6

When a node wants to send a packet to an on-link neighbor but the sender does not know the link-layer address for the target node, which process is invoked by the node?

A)Address Resolution
B)Duplicate Address Detection
C)Router Discovery
D)Redirect Function

Question 7

Neighbor Discovery makes abundant use of messages.

Question 8

What process is used by nodes to discover neighbor routers on the local link, learn prefixes, configure their default gateway, and other possible configuration parameters?

A)Address Resolution
B)Duplicate Address Detection
C)Router Discovery
D)Redirect Function

Question 9

Routers periodically send which type of message to inform hosts of link prefixes, settings for address autoconfiguration, link MTU, valid and preferred lifetimes, and other possible options?

A)Router Solicitation
B)Neighbor Advertisement
C)Router Advertisement
D)Neighbor Solicitation

Question 10

What type of messages does a router send to the sender when it knows a better first-hop for a particular destination address?

A)Router Solicitation
B)Router Advertisement
C)Neighbor Advertisement
D)Redirect

Question 11

The Target Link-Layer Address option is used in Neighbor Advertisement and in which of the following messages?

A)Redirect
B)Router Advertisement
C)Router Solicitation
D)Neighbor Solicitation

Question 12

IPv6 Neighbor Solicitation protocol can be compared with which IPv4 protocol function?

A)ARP Request
B)Router Solicitation
C)Router Advertisement
D)Redirect

Question 13

IPv6 Router Advertisement protocol can be compared with which IPv4 protocol function?

A)ARP Request
B)Router Solicitation
C)Router Advertisement
D)Redirect

Question 14

What type of message does an IPv6 node send when an interface becomes active and the node wants to find routers connected to the local link?

A)Router Advertisement
B)Neighbor Advertisement
C)Router Solicitation
D)Neighbor Solicitation

Question 15

Which of the following uses ICMPv6 type 133 messages?

A)Router Solicitation
B)Router Advertisement
C)Neighbor Advertisement
D)Neighbor Solicitation

Question 16

Upon start-up, Neighbor Discovery collects information about how nodes configure their IPv6 addresses to communicate on the network.

Question 17

IPv6 Duplicate Address Detection protocol can be compared with which IPv4 protocol function?

A)ARP Request
B)Gratuitous ARP
C)Router Advertisement
D)Redirect

Question 18

When a host's interface initializes, it may send which of the following messages to determine if any IPv6 routers are on the network segment?

A)Router Advertisement
B)Router Solicitation
C)Neighbor Advertisement
D)Neighbor Solicitation

Question 19

Which option is sent in Router Advertisement messages to provide a common MTU value for nodes on the same network segment?

A)Prefix Information
B)Target Link-Layer Address
C)Redirected Header
D)MTU

Question 20

Neighbor Discovery performs many of the functions that ICMP Router Discovery and which of the following handled in IPv4?

A)Neighbor Solicitation
B)Host Discovery
C)Node Discovery
D)Redirect

Question 21

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a multicast address with link-local scope, which helps reduce the number of multicast groups to which nodes must subscribe in order to make themselves available for solicitation by other nodes on their local links

Question 22

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a reserved address used as a source address if a node does not have an assigned IPv6 address

Question 23

Which of the following uses ICMPv6 type 135 messages?

A)Router Solicitation
B)Router Advertisement
C)Neighbor Advertisement
D)Neighbor Solicitation

Question 24

An ICMPv6 type 136 message is also known as which of the following?

A)Router Solicitation
B)Router Advertisement
C)Neighbor Advertisement
D)Neighbor Solicitation

Question 25

A node can send a(n) ____________________ message to find (or verify) the link-layer address of a local node, to see if a node is still available, or to check that its own address is not already in use by another node.

Question 26

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a message sent out by a node to ask routers connected to a local link to identify themselves by immediately sending a Router Advertisement message rather than waiting for the next scheduled advertisement to appear

Question 27

Which option is used in Mobile IPv6 by mobile nodes receiving Router Advertisement messages for their movement detection algorithm?

A)Target Link Layer Address
B)Redirected Header
C)Advertisement Interval
D)Home Agent Information

Question 28

Routers send ____________________ messages to inform a host of a better first-hop router for a destination.

Question 29

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a message sent out by a router to inform a sending node that there is a better first-hop router to access a destination node that is off-link

Question 30

An ICMPv6 type 134 message is also known as which of the following?

A)Router Solicitation
B)Router Advertisement
C)Neighbor Advertisement
D)Neighbor Solicitation
Enter the appropriate word(s) to complete the statement.

Question 31

Which of the following messages do router send to inform a host of a better first-hop router for a destination?

A)Route Advertisement
B)Neighbor Advertisement
C)Route Solicitation
D)Redirect

Question 32

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
messages sent by nodes that include their IPv6 and link-layer addresses to maintain information about local addresses and on-link status

Question 33

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
messages used to find (or verify) the link-layer address for a local node, to see if that node is still available, or to check that an address is not in use by another node

Question 34

The ____________________ address is a multicast address with link-local scope that helps reduce the number of multicast groups to which nodes must subscribe to make themselves available for solicitation by other nodes on their local links.

Question 35

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a message sent out by a router which contains its own link-layer address, the network prefix of the local subnet, the MTU for the local link, suggested hop limit values, and other parameters useful for nodes on the local link

Question 36

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a protocol in IPv6 that permits nodes and routers on a local link to keep one another updated about any recent change in their network connectivity or status

Question 37

Match each item with a statement below.
a.Neighbor Discovery
b.Duplicate Address Detection
c.Neighbor Solicitation
d.Router Advertisement
e.Neighbor Advertisement
f.unspecified address
g.Redirect
h.Router Solicitation
i.solicited-node address
a method for checking the IPv6 address that a node wishes to use by sending a Neighbor Advertisement message to see if it is already in use by some other node

Question 38

ND makes use of multicast addresses. Which multicast address is expressed using ff02::2?

A)all nodes
B)all routers
C)all proxies
D)all domains

Question 39

Routers reply to Router Solicitation messages received by a node using ____________________ messages.

Question 40

A router might also use ____________________ messages to balance traffic loads across multiple interfaces.

Question 41

Briefly describe the conceptual sending algorithm.

Question 42

What are the five stages for a neighbor cache entry defined in RFC 4861?

Question 43

What information does an IPv6 Router Solicitation message contain for Ethernet interfaces?

Question 44

What is a conceptual host model?

Question 45

What information does an IPv6 Router Advertisement message contain for Ethernet interfaces?

Question 46

Briefly describe the following ICMPv6 message types: Neighbor Solicitation and Neighbor Advertisement.

Question 47

What neighbor data should be stored on a host?

Question 48

What are the processes involved with Neighbor Discovery?

Question 49

What information does an IPv6 Neighbor Solicitation message contain for Ethernet interfaces?

Question 50

Briefly describe the following ICMPv6 message types: Router Solicitation, Router Advertisement, and Redirect.