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What is the primary purpose of the Neighbor Discovery Protocol (NDP) in IPv6 networks?
a. DNS resolution
b. Address resolution and network discovery
c. Routing updates
d. Port forwarding
Answer: b. Address resolution and network discoverywikipedia+2
Which protocol does NDP replace in IPv6?
a. ICMP
b. ARP
c. TCP
d. DHCP
Answer: b. ARPcloudns+2
NDP uses which message type for router advertisement?
a. TCP
b. UDP
c. ICMPv6
d. ARP
Answer: c. ICMPv6cbtnuggets+2
How many key ICMPv6 packet types does NDP define?
a. 2
b. 3
c. 4
d. 5
Answer: d. 5trustedinstitute+2
Which message is used by hosts to discover routers?
a. Router Solicitation
b. Neighbor Solicitation
c. Router Advertisement
d. Neighbor Advertisement
Answer: a. Router Solicitationdatatracker.ietf+2
What is the purpose of Router Advertisement messages?
a. To announce DNS servers
b. To announce routing protocols
c. To advertise prefix and parameters to hosts
d. To resolve MAC addresses
Answer: c. To advertise prefix and parameters to hostsstudy-ccna+2
Which message asks for the link-layer address of a neighbor?
a. Neighbor Advertisement
b. Router Advertisement
c. Neighbor Solicitation
d. Redirect
Answer: c. Neighbor Solicitationnetworklessons+2
What is the response to a Neighbor Solicitation?
a. Router Advertisement
b. Neighbor Advertisement
c. Redirect
d. Address Reply
Answer: b. Neighbor Advertisementitexamanswers+2
Which protocol function enables IPv6 devices to automatically configure addresses?
a. DHCP
b. ARP
c. SLAAC
d. ICMPv6
Answer: c. SLAACgeeksforgeeks+2
Which NDP feature avoids the use of broadcast address resolution?
a. ARP simulation
b. Solicited-node multicast
c. TCP flooding
d. DNS lookup
Answer: b. Solicited-node multicastcisco+2
Which feature does NDP offer over ARP to check if a neighbor is available?
a. Routing
b. DNS caching
c. Neighbor Unreachability Detection
d. Address Pooling
Answer: c. Neighbor Unreachability Detectionwikipedia+2
What does Duplicate Address Detection (DAD) prevent in IPv6?
a. DNS spoofing
b. Routing loops
c. Address conflicts
d. Fragmentation
Answer: c. Address conflictscbtnuggets+2
NDP operates at which layer of the OSI model?
a. Application
b. Data Link
c. Network
d. Transport
Answer: c. Networktrustedinstitute+2
Which NDP extension provides cryptographic security?
a. Secure Neighbor Discovery (SEND)
b. TLS
c. IPsec
d. SSL
Answer: a. Secure Neighbor Discovery (SEND)cloudns+2
Which address format is used for NDP multicast queries?
a. FF02::1:FFxx:xxxx
b. 224.0.0.1
c. 255.255.255.0
d. ::1
Answer: a. FF02::1:FFxx:xxxxnetworklessons+2
The process of determining whether a device on the local link is reachable is called:
a. Path Selection
b. Prefix Discovery
c. Neighbor Unreachability Detection
d. Autoconfiguration
Answer: c. Neighbor Unreachability Detectionstudy-ccna+2
A device uses which message to request routing information from routers?
a. Router Solicitation
b. Neighbor Solicitation
c. Prefix Advertisement
d. Address Query
Answer: a. Router Solicitationdatatracker.ietf+2
Which field is NOT typically included in a Neighbor Advertisement message?
a. MAC address
b. IPv6 address
c. Routing table
d. Message flags
Answer: c. Routing tablecisco+2
In IPv6 NDP, what initiates Duplicate Address Detection?
a. Neighbor Solicitation
b. Router Advertisement
c. DNS Resolution
d. TCP Handshake
Answer: a. Neighbor Solicitationgeeksforgeeks+2
What mechanism helps a host select the best gateway on the network?
a. Redirect
b. ARP cache
c. SLAAC
d. DNS
Answer: a. Redirectwikipedia+2
The NDP protocol uses which function to discover prefixes?
a. Prefix Discovery
b. Address Solicitation
c. Prefix Assignment
d. Table Lookup
Answer: a. Prefix Discoverywatelectronics+2
What does a Router Advertisement message include?
a. Network time
b. Network prefix
c. DNS name
d. Subnet mask only
Answer: b. Network prefixnetworkacademy+2
What type of packet does NDP use to detect the status of a neighbor?
a. Router Advertisement
b. Neighbor Solicitation
c. Neighbor Advertisement
d. Both b and c
Answer: d. Both b and cdatatracker.ietf+2
Which ICMPv6 type value is used for Neighbor Solicitation messages?
a. 135
b. 138
c. 134
d. 132
Answer: a. 135networklessons+2
What is the type value for Neighbor Advertisement messages in ICMPv6?
a. 136
b. 137
c. 134
d. 138
Answer: a. 136cisco+2
Which message type in NDP can be used by a router to inform a host of a better next-hop?
a. Router Advertisement
b. Router Solicitation
c. Redirect
d. Prefix Discovery
Answer: c. Redirectcbtnuggets+2
NDP packets are transmitted using:
a. Unicast only
b. Multicast and unicast
c. Broadcast only
d. ARP flooding
Answer: b. Multicast and unicastcbtnuggets+2
Which protocol manages IP-to-MAC mapping in IPv6?
a. ARP
b. DHCP
c. NDP
d. RIPng
Answer: c. NDPcloudns+2
In which RFC is the Neighbor Discovery Protocol for IPv6 defined?
a. RFC 2460
b. RFC 4861
c. RFC 1918
d. RFC 1122
Answer: b. RFC 4861wikipedia+2
What is one key benefit of NDP over ARP?
a. Better encryption
b. Multicast instead of broadcast
c. Manual address mapping
d. Use of TCP
Answer: b. Multicast instead of broadcastnetworklessons+2
Which message does NDP use for address resolution?
a. Neighbor Solicitation
b. Router Advertisement
c. DHCP Discover
d. Address Request
Answer: a. Neighbor Solicitationcisco+2
When a host boots on an IPv6 network, what’s the sequence for autoconfiguration?
a. Receives Router Advertisement, runs DAD
b. Runs DAD, sends Neighbor Solicitation
c. Sends Neighbor Solicitation, receives Router Advertisement
d. Any order
Answer: a. Receives Router Advertisement, runs DADgeeksforgeeks+2
Which NDP function determines IPv6 addresses that can communicate directly?
a. Prefix Discovery
b. SLAAC
c. Unreachability Detection
d. DNS
Answer: a. Prefix Discoverywatelectronics+2
What does NDP use for communication between devices?
a. UDP
b. TCP
c. ICMPv6
d. IGMP
Answer: c. ICMPv6wikipedia+2
What is the range for the solicited-node multicast address?
a. FF02::1:FF00:0000 to FF02::1:FFFF:FFFF
b. 224.0.0.0 to 239.255.255.255
c. FF01::/64
d. FF08::/16
Answer: a. FF02::1:FF00:0000 to FF02::1:FFFF:FFFFcbtnuggets+2
What is the primary reason for using solicited-node multicast in NDP?
a. Reduce network load
b. Increase DNS lookups
c. Improve routing efficiency
d. Generate more ARP requests
Answer: a. Reduce network loadnetworklessons+2
Which NDP message helps prevent address duplication?
a. Neighbor Advertisement
b. Router Advertisement
c. Neighbor Solicitation
d. Redirect
Answer: c. Neighbor Solicitationstudy-ccna+2
NDP helps hosts select the best next-hop using:
a. Prefix Advertisement
b. Redirect message
c. ARP broadcast
d. DNS MX record
Answer: b. Redirect messagecloudns+2
NDP provides all EXCEPT which of the following?
a. Address autoconfiguration
b. Prefix discovery
c. Network address translation
d. Neighbor Unreachability Detection
Answer: c. Network address translationcloudns+2
Which protocol works alongside NDP for enhanced security?
a. SEND
b. ARP
c. DHCPv6
d. OSPFv3
Answer: a. SENDitexamanswers+2
On what types of network links is ND applicable?
a. Only Ethernet
b. All IPv6 link types
c. Only wireless
d. Fiber only
Answer: b. All IPv6 link typesjuniper+2
What role does the ND Proxy play?
a. Provides NAT functionality
b. Acts as DHCP server
c. Bridges multiple segments within a prefix
d. Encrypts ICMP messages
Answer: c. Bridges multiple segments within a prefixitexamanswers+2
Which message will a host use to check the status of a router?
a. Neighbor Advertisement
b. Router Solicitation
c. ICMP Ping
d. Address Query
Answer: b. Router Solicitationdatatracker.ietf+2
What happens if a neighbor becomes unreachable in NDP?
a. The entry is removed
b. The entry is marked stale
c. The network halts
d. Routing stops
Answer: b. The entry is marked stalestudy-ccna+2
Which NDP message can be sent as a response to multiple requests?
a. Router Advertisement
b. Neighbor Advertisement
c. Neighbor Solicitation
d. Redirect
Answer: a. Router Advertisementdatatracker.ietf+2
If an IPv6 host changes its MAC address, how does NDP react?
a. Updates neighbor cache
b. Deletes IPv6 address
c. Discards packets
d. Ignores change
Answer: a. Updates neighbor cachecisco+2
Which component enables IPv6 stateless address autoconfiguration?
a. Prefix Discovery
b. SLAAC
c. DHCP
d. ND Proxy
Answer: b. SLAACgeeksforgeeks+2
To update its list of reachable routers, a host relies on:
a. Router Advertisement
b. Neighbor Solicitation
c. ARP cache
d. TCP handshake
Answer: a. Router Advertisementwikipedia+2
Which protocol option is used for inverse address mapping in NDP?
a. IND
b. ARP
c. SLAAC
d. ND Proxy
Answer: a. INDitexamanswers+2
NDP’s redirect function is similar to which IPv4 protocol?
a. ICMP Redirect
b. ARP Reply
c. DHCP Offer
d. DNS Update
Answer: a. ICMP Redirectcbtnuggets+2

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