Topic 04 Practice Test 3 covers IPv6 Addressing, Types, and Client IP Parameters for Cisco Certified Network Associate 200-301 CCNA and maps to objectives 1.8–1.10. For broader exam preparation, review the Cisco CCNA 200-301 Exam Dumps. Every option includes focused technical reasoning explaining both the networking concept and its fit to the scenario.
Question 1
Before Orchard hands the Odyssey service to operations, Leila must close verification item CHG-3700. A network engineer encounters IPv6 address 2001:db8:abcd::7 during verification. What address type does it represent? Choose ONE.
- Global unicast
- Unique local unicast
- Link-local unicast
- Multicast
Correct Answer: A
Correct Answer
Answer A is correct because Global-unicast IPv6 addresses are routable unicast identifiers, with current allocations commonly drawn from 2000::/3. 2001:db8:abcd::7 matches that defined prefix or special value. The address is not in link-local, unique-local, multicast, loopback, or unspecified space, so global unicast is the relevant classification.
Incorrect Answers
Answer B is incorrect because IPv6 unique-local space is FC00::/7, with locally assigned ULA prefixes commonly starting with FD. This IPv6 category has a distinct prefix signature that 2001:db8:abcd::7 does not exhibit.
Answer C is incorrect because IPv6 link-local unicast addresses use FE80::/10 and support communication such as neighbor discovery on the local link. Comparing 2001:db8:abcd::7 with the category prefix shows that the address belongs to a different IPv6 type.
Answer D is incorrect because The FF00::/8 prefix identifies IPv6 multicast, where one address represents a group of interfaces. 2001:db8:abcd::7 lacks the bit pattern required for this category and must be classified differently.
Question 2
A peer review for Vantage at Quarry assigns Felix the evidence check recorded as CHG-3713. A network engineer encounters IPv6 address ff02::2 during verification. What address type does it represent? Choose ONE.
- Unique local unicast
- Multicast
- Global unicast
- Link-local unicast
Correct Answer: B
Correct Answer
Answer B is correct because IPv6 reserves FF00::/8 for multicast groups instead of individual unicast interface identities. ff02::2 matches that defined prefix or special value. A packet sent to the address is delivered according to the multicast group and scope encoded in the address.
Incorrect Answers
Answer C is incorrect because Ordinary globally routable IPv6 unicast space is commonly recognized within the currently allocated 2000::/3 range. This category is identified by another IPv6 prefix pattern, not the one shown by ff02::2.
Answer D is incorrect because An address in FE80::/10 is link-local, a scope used for same-link IPv6 communication and neighbor discovery. The address ff02::2 is outside the defined space for this type, which rules out the choice.
Answer A is incorrect because ULAs come from FC00::/7; in practice the locally assigned form typically appears with an FD prefix. This IPv6 class has a specific prefix signature that is absent from ff02::2.
Question 3
The Rosewood branch is staging Circuit; Aya is completing the implementation checklist for CHG-3726. A network engineer encounters IPv6 address fe80::1 during verification. What address type does it represent? Choose ONE.
- Unique local unicast
- Multicast
- Link-local unicast
- Global unicast
Correct Answer: C
Correct Answer
Answer C is correct because The FE80::/10 prefix denotes link-local unicast space, which IPv6 nodes use for operations confined to one link. fe80::1 matches that defined prefix or special value. Routers do not forward packets with link-local source or destination addresses to other links.
Incorrect Answers
Answer D is incorrect because A global-unicast address represents one routable interface and current global allocations commonly fall under 2000::/3. Applying the category boundary to fe80::1 produces no match, so the proposed type is incorrect.
Answer A is incorrect because The unique-local category is defined by FC00::/7, and locally generated assignments commonly use FD at the start. fe80::1 cannot be placed in this category because its leading bits do not satisfy the defining rule.
Answer B is incorrect because An IPv6 value beginning in FF00::/8 is multicast and targets a group, not a single unicast interface. fe80::1 does not carry the bit pattern or reserved value required for this address class.
Question 4
As part of Beacon readiness at Springdale, Layla investigates the condition logged in CHG-3739. A network engineer encounters IPv6 address fdab:cdef:1::9 during verification. What address type does it represent? Choose ONE.
- Global unicast
- Link-local unicast
- Multicast
- Unique local unicast
Correct Answer: D
Correct Answer
Answer D is correct because IPv6 unique-local space is FC00::/7, with locally assigned ULA prefixes commonly starting with FD. fdab:cdef:1::9 matches that defined prefix or special value. They are intended for local/site communication and are not expected to be routed on the global Internet.
Incorrect Answers
Answer A is incorrect because Global-unicast IPv6 addresses are routable unicast identifiers, with current allocations commonly drawn from 2000::/3. The prefix characteristics of fdab:cdef:1::9 correspond to another IPv6 address class. The address-type rule is independent of the interface name or configured resolver and can be evaluated directly from the IPv6 value.
Answer B is incorrect because IPv6 link-local unicast addresses use FE80::/10 and support communication such as neighbor discovery on the local link. fdab:cdef:1::9 does not use the prefix or reserved form that identifies this IPv6 category.
Answer C is incorrect because The FF00::/8 prefix identifies IPv6 multicast, where one address represents a group of interfaces. The defining range for this address type excludes fdab:cdef:1::9, so this classification is not valid.
Question 5
Operations at Timberline asks Marta to validate Ion before approving change CHG-3752. Two IPv6 interfaces use 2001:db8:1234:5600::1/56 and 2001:db8:1234:56ff::9/56. What does the prefix comparison show? Choose ONE.
- The addresses share the same IPv6 prefix
- The addresses belong to different IPv6 prefixes
- The comparison depends on the MAC address table
- The comparison depends on the DNS server
Correct Answer: A
Correct Answer
Answer A is correct because Applying /56 produces 2001:db8:1234:5600::/56 for the first address and 2001:db8:1234:5600::/56 for the second. The prefix values are identical, so the two addresses belong to the same IPv6 subnet.
Incorrect Answers
Answer B is incorrect because The /56 calculation yields 2001:db8:1234:5600::/56 and 2001:db8:1234:5600::/56. The calculated network prefixes are the same, so treating them as different subnets is incorrect. This condition is observable in the resulting interface, addressing, or forwarding state.
Answer C is incorrect because Layer 2 MAC learning controls frame forwarding, not the Layer 3 calculation of an IPv6 prefix boundary. The supplied addresses and prefix length are sufficient to compare their /64 network identifiers directly. In the Operations Timberline Marta validation, this distinction is directly relevant.
Answer D is incorrect because DNS provides name-to-address resolution; IPv6 prefix membership is determined independently from address bits and prefix length. IPv6 prefix membership comes from comparing network bits, regardless of which DNS resolver is configured. The scenario tests that exact distinction as it would appear during a practical verification workflow.
Question 6
The Pulse deployment at Union has reached its verification gate; Ibrahim is handling CHG-3765. Two IPv6 interfaces use fd55:1:2:3::10/64 and fd55:1:2:4::10/64. What does the prefix comparison show? Choose ONE.
- The addresses share the same IPv6 prefix
- The addresses belong to different IPv6 prefixes
- The comparison depends on the MAC address table
- The comparison depends on the DNS server
Correct Answer: B
Correct Answer
Answer B is correct because The /64 calculation yields fd55:1:2:3::/64 and fd55:1:2:4::/64. The values differ, so a routed path is needed between those IPv6 prefixes. The expected result follows from the device state and protocol semantics given in the question.
Incorrect Answers
Answer A is incorrect because Applying /64 produces fd55:1:2:3::/64 for the first address and fd55:1:2:4::/64 for the second. The prefix values differ, so the addresses do not share the same subnet.
Answer C is incorrect because A MAC table maps Ethernet sources to ports and is unrelated to deciding whether IPv6 addresses share a prefix. Prefix membership follows from comparing the network bits defined by the given /64 boundary. In the The Pulse Union validation, this distinction is directly relevant.
Answer D is incorrect because Whether two IPv6 values share a network prefix is an addressing calculation, not a function of DNS resolution. The resolver setting does not affect the binary comparison that determines whether addresses share a prefix. The engineer must match the requested behavior, not just choose a value that is generally valid elsewhere.
Question 7
At the Valleyview office, Nora checks a Waypoint design assumption while processing CHG-3778. Which compressed IPv6 notation correctly represents 2001:0db8:abcd:0000:0000:0000:0000:0007? Choose ONE.
- 2001:db8:abcd:::7
- 2001:db8::ffff
- 2001:db8:abcd::7
- 2001:0db8:abcd:0000:0000:0000:0007
Correct Answer: C
Correct Answer
Answer C is correct because IPv6 compression removes leading zeros within hextets and permits one contiguous run of all-zero hextets to be replaced by a double colon. Applying those two rules to the expanded value yields 2001:db8:abcd::7 without changing any significant hexadecimal digits.
Incorrect Answers
Answer D is incorrect because Legal IPv6 compression may suppress leading zeros and one run of zero hextets, but it cannot discard nonzero bits or create a triple-colon form. That shorthand expands to a different 128-bit value than the address supplied in the question. In the At Valleyview Nora validation, this distinction is directly relevant.
Answer A is incorrect because Compressed IPv6 notation must preserve every nonzero bit and may use only a valid double-colon omission for contiguous zero hextets. Re-expanding this notation does not reproduce the original eight-hextet IPv6 value. In the At Valleyview Nora validation, this distinction is directly relevant.
Answer B is incorrect because An IPv6 shorthand is valid only if it reconstructs the original eight hextets; nonzero data cannot disappear and ::: is not legal notation. The compressed form resolves to a different IPv6 bit pattern, so it is not equivalent to the supplied address. In the At Valleyview Nora validation, this distinction is directly relevant.
Question 8
Change CHG-3791 covers the Dynamo network at Woodland, where Hugo is the assigned verifier. Which compressed IPv6 notation correctly represents fd00:0010:0020:0030:0000:0000:0000:0001? Choose ONE.
- fd00:0010:0020:0030:0000:0000:0001
- fd00:10:20:30:::1
- fd00:100:20:30::1
- fd00:10:20:30::1
Correct Answer: D
Correct Answer
Answer D is correct because IPv6 compression removes leading zeros within hextets and permits one contiguous run of all-zero hextets to be replaced by a double colon. Applying those two rules to the expanded value yields fd00:10:20:30::1 without changing any significant hexadecimal digits.
Incorrect Answers
Answer A is incorrect because Legal IPv6 compression may suppress leading zeros and one run of zero hextets, but it cannot discard nonzero bits or create a triple-colon form. When expanded, this candidate fails to recreate the original 128-bit address exactly. In the Change CHG-3791 Dynamo validation, this distinction is directly relevant.
Answer B is incorrect because Compressed IPv6 notation must preserve every nonzero bit and may use only a valid double-colon omission for contiguous zero hextets. That shorthand expands to a different 128-bit value than the address supplied in the question. In the Change CHG-3791 Dynamo validation, this distinction is directly relevant.
Answer C is incorrect because An IPv6 shorthand is valid only if it reconstructs the original eight hextets; nonzero data cannot disappear and ::: is not legal notation. Re-expanding this notation does not reproduce the original eight-hextet IPv6 value. In the Change CHG-3791 Dynamo validation, this distinction is directly relevant.
Question 9
At Yorkfield, Owen validates the Kodiak cutover under change CHG-3804. Interface GigabitEthernet0/0 uses MAC address 18:65:90:aa:bb:cc and is configured with `ipv6 address 2001:db8:44:10::/64 eui-64`. Which global IPv6 address is generated from modified EUI-64? Choose ONE.
- 2001:db8:44:10:1a65:90ff:feaa:bbcc
- 2001:db8:44:10:1865:90ff:feaa:bbcc
- 2001:db8:44:10::1
- 2001:db8:44:10:ffff:ffff:ffff:ffff
Correct Answer: A
Correct Answer
Answer A is correct because Modified EUI-64 splits the 48-bit MAC, inserts FFFE in the middle, and flips the universal/local bit in the first octet; 18:65:90:aa:bb:cc therefore produces interface ID 1a65:90ff:feaa:bbcc. Appending that 64-bit interface ID to 2001:db8:44:10::/64 yields 2001:db8:44:10:1a65:90ff:feaa:bbcc.
Incorrect Answers
Answer B is incorrect because This value inserts FFFE but leaves the universal/local bit in the first MAC octet unchanged. Modified EUI-64 requires that bit to be inverted, so the resulting interface identifier is not the one IOS generates. In the At Yorkfield Owen validation, this distinction is directly relevant.
Answer C is incorrect because The address remains in the same /64, but its interface ID is manually chosen rather than derived from the supplied MAC. With the eui-64 keyword, IOS derives the interface ID from the MAC, so an unrelated manually selected value does not satisfy the command behavior. In the At Yorkfield Owen validation, this distinction is directly relevant.
Answer D is incorrect because Although the prefix is correct, the interface identifier does not correspond to the modified EUI-64 value generated from the given MAC. EUI-64 construction is deterministic from the MAC address; this value is not the interface ID that the keyword would generate. In the At Yorkfield Owen validation, this distinction is directly relevant.
Question 10
The Raptor migration at Zephyr is in pre-check, and Lena owns ticket CHG-3817. Interface GigabitEthernet0/0 uses MAC address 54:ee:75:10:20:30 and is configured with `ipv6 address 2001:db8:44:10::/64 eui-64`. Which global IPv6 address is generated from modified EUI-64? Choose ONE.
- 2001:db8:44:10:ffff:ffff:ffff:ffff
- 2001:db8:44:10:56ee:75ff:fe10:2030
- 2001:db8:44:10:54ee:75ff:fe10:2030
- 2001:db8:44:10::1
Correct Answer: B
Correct Answer
Answer B is correct because Modified EUI-64 splits the 48-bit MAC, inserts FFFE in the middle, and flips the universal/local bit in the first octet; 54:ee:75:10:20:30 therefore produces interface ID 56ee:75ff:fe10:2030. Appending that 64-bit interface ID to 2001:db8:44:10::/64 yields 2001:db8:44:10:56ee:75ff:fe10:2030.
Incorrect Answers
Answer C is incorrect because This value inserts FFFE but leaves the universal/local bit in the first MAC octet unchanged. Modified EUI-64 requires that bit to be inverted, so the resulting interface identifier is not the one IOS generates. In the The Raptor Zephyr validation, this distinction is directly relevant.
Answer D is incorrect because The address remains in the same /64, but its interface ID is manually chosen rather than derived from the supplied MAC. With the eui-64 keyword, IOS derives the interface ID from the MAC, so an unrelated manually selected value does not satisfy the command behavior. In the The Raptor Zephyr validation, this distinction is directly relevant.
Answer A is incorrect because Although the prefix is correct, the interface identifier does not correspond to the modified EUI-64 value generated from the given MAC. EUI-64 construction is deterministic from the MAC address; this value is not the interface ID that the keyword would generate. In the The Raptor Zephyr validation, this distinction is directly relevant.
Question 11
During Amber’s Yield maintenance window, Tariq performs the network acceptance test for CHG-3830. A router interface must use global unicast address 2001:db8:100:20::1 with a /64 prefix. Which Cisco IOS interface command performs the required configuration? Choose ONE.
- ipv6 address 2001:db8:100:20::1/48
- ipv6 enable 2001:db8:100:20::1/64
- ipv6 address 2001:db8:100:20::1/64
- ip address 2001:db8:100:20::1 255.255.255.0
Correct Answer: C
Correct Answer
Answer C is correct because The ipv6 address interface command accepts an IPv6 address with its prefix length and enables IPv6 processing for that address on the interface. The supplied command exactly matches the requested global address and /64 prefix. In the During Amber Yield validation, this distinction is directly relevant.
Incorrect Answers
Answer D is incorrect because The ip address command is the IPv4 interface-address command and expects an IPv4 address plus an IPv4 mask. An IPv6 address cannot be configured with IPv4 command syntax. This criterion is what separates the correct operational result from the other plausible alternatives.
Answer A is incorrect because The ipv6 address syntax is valid, but /48 is a different prefix length from the required /64. Using it would place the interface in a much broader IPv6 prefix than specified. In the During Amber Yield validation, this distinction is directly relevant.
Answer B is incorrect because Ipv6 enable enables IPv6 processing and can create a link-local address, but it does not take a global IPv6 address argument in this form. The task explicitly requires assigning the stated global unicast address. In the During Amber Yield validation, this distinction is directly relevant.
Question 12
For ticket CHG-3843, Theo is reviewing the Fusion rollout at the Birch site. An engineer wants a concise Cisco IOS display of IPv6-enabled interfaces, their operational state, and assigned IPv6 addresses. Which command is the best fit? Choose ONE.
- show ip interface brief
- show mac address-table
- show arp
- show ipv6 interface brief
Correct Answer: D
Correct Answer
Answer D is correct because Show ipv6 interface brief summarizes IPv6 interface status and configured IPv6 addresses in a compact display. That output directly supports the requested verification without the detail of the full interface view. In the For CHG-3843 Theo validation, this distinction is directly relevant.
Incorrect Answers
Answer A is incorrect because Show ip interface brief is an IPv4-oriented summary of interface IP addressing and status. It does not provide the requested IPv6 address summary. The network device applies this rule consistently when processing the described configuration or traffic.
Answer B is incorrect because The MAC address table is a Layer 2 forwarding database mapping learned MAC addresses to VLANs and ports. It does not list routed-interface IPv6 assignments. This result can be confirmed from the address, interface, or forwarding information provided.
Answer C is incorrect because ARP maps IPv4 network-layer addresses to link-layer addresses; IPv6 uses Neighbor Discovery instead. The command therefore cannot serve as an IPv6 interface-address summary. The outcome is determined by the stated addressing or forwarding condition rather than by naming convention.
Question 13
Before Coral hands the Echo service to operations, Sara must close verification item CHG-3856. A lab interface needs IPv6 processing and an automatically generated link-local address, but no global IPv6 address is required. Which Cisco IOS interface command is sufficient? Choose ONE.
- ipv6 enable
- ipv6 unicast-routing
- ip address dhcp
- ipv6 address 2001:db8::1/64
Correct Answer: A
Correct Answer
Answer A is correct because The ipv6 enable command turns on IPv6 processing on the interface and causes a link-local address to be available even without an explicitly configured global address. That exactly matches a link-local-only lab requirement. In the Before Coral Echo validation, this distinction is directly relevant.
Incorrect Answers
Answer B is incorrect because Ipv6 unicast-routing enables IPv6 packet forwarding globally on a router rather than assigning or enabling IPv6 on a specific interface. It does not by itself create the interface-level link-local configuration requested. In the Before Coral Echo validation, this distinction is directly relevant.
Answer C is incorrect because Ip address dhcp requests IPv4 configuration from DHCP on an interface. The scenario requires IPv6 link-local behavior, so the IPv4 DHCP command is unrelated. That makes the option unsuitable for this specific verification goal even if it is valid in another context.
Answer D is incorrect because This command would assign a global unicast-style address in addition to IPv6 processing. The requirement explicitly says no global address is needed, making this more configuration than necessary. This matters during verification because the configured value determines the device behavior being tested.
Question 14
A peer review for Lumen at Driftwood assigns Rami the evidence check recorded as CHG-3869. A Windows support engineer must display the full TCP/IP configuration for all adapters, including IPv4/IPv6 addresses, DHCP information, DNS servers, and default gateways. Which command should be used? Choose ONE.
- nslookup
- ipconfig /all
- show ipv6 interface brief
- route print only
Correct Answer: B
Correct Answer
Answer B is correct because On Windows, ipconfig /all displays the complete TCP/IP configuration for all adapters, extending the basic ipconfig view with additional DHCP and DNS details. That is the most direct verification command for the requested client parameters. In the A Lumen Driftwood validation, this distinction is directly relevant.
Incorrect Answers
Answer C is incorrect because This is a Cisco IOS network-device command, not a Windows client command. It cannot inspect the Windows host adapters described in the scenario. The operational distinction is visible in the resulting interface, address, or forwarding state.
Answer D is incorrect because Route print focuses on the local routing table rather than the complete adapter configuration. It may help with route troubleshooting but does not replace the requested full IP/DHCP/DNS parameter view. A correct implementation must satisfy that property rather than a superficially similar one.
Answer A is incorrect because Nslookup tests DNS name resolution and queries DNS servers. It does not display the host IPv4/IPv6 address, prefix, gateway, and DHCP configuration for every adapter. The requested outcome follows from the protocol rule being exercised in this scenario.
Question 15
The Evergreen branch is staging Solstice; Max is completing the implementation checklist for CHG-3882. A network engineer encounters IPv6 address ff02::fb during verification. What address type does it represent? Choose ONE.
- Link-local unicast
- Unique local unicast
- Multicast
- Global unicast
Correct Answer: C
Correct Answer
Answer C is correct because IPv6 reserves FF00::/8 for multicast groups instead of individual unicast interface identities. ff02::fb matches that defined prefix or special value. A packet sent to the address is delivered according to the multicast group and scope encoded in the address.
Incorrect Answers
Answer D is incorrect because Ordinary globally routable IPv6 unicast space is commonly recognized within the currently allocated 2000::/3 range. Comparing ff02::fb with the category prefix shows that the address belongs to a different IPv6 type. This operational distinction is directly verifiable from the device state described in the scenario.
Answer A is incorrect because An address in FE80::/10 is link-local, a scope used for same-link IPv6 communication and neighbor discovery. ff02::fb lacks the bit pattern required for this category and must be classified differently.
Answer B is incorrect because ULAs come from FC00::/7; in practice the locally assigned form typically appears with an FD prefix. This category is identified by another IPv6 prefix pattern, not the one shown by ff02::fb.
Question 16
As part of Zenith readiness at Forest, Kenji investigates the condition logged in CHG-3895. A network engineer encounters IPv6 address 2001:db8:300::99 during verification. What address type does it represent? Choose ONE.
- Unique local unicast
- Link-local unicast
- Multicast
- Global unicast
Correct Answer: D
Correct Answer
Answer D is correct because A global-unicast address represents one routable interface and current global allocations commonly fall under 2000::/3. 2001:db8:300::99 matches that defined prefix or special value. The address is not in link-local, unique-local, multicast, loopback, or unspecified space, so global unicast is the relevant classification.
Incorrect Answers
Answer A is incorrect because The unique-local category is defined by FC00::/7, and locally generated assignments commonly use FD at the start. The address 2001:db8:300::99 is outside the defined space for this type, which rules out the choice.
Answer B is incorrect because The FE80::/10 prefix denotes link-local unicast space, which IPv6 nodes use for operations confined to one link. This IPv6 class has a specific prefix signature that is absent from 2001:db8:300::99.
Answer C is incorrect because An IPv6 value beginning in FF00::/8 is multicast and targets a group, not a single unicast interface. Applying the category boundary to 2001:db8:300::99 produces no match, so the proposed type is incorrect.
Question 17
Operations at Glenwood asks Zoe to validate Glacier before approving change CHG-3908. Two IPv6 interfaces use fd33:44:55:66::1/64 and fd33:44:55:66::2/64. What does the prefix comparison show? Choose ONE.
- The addresses share the same IPv6 prefix
- The addresses belong to different IPv6 prefixes
- The comparison depends on the MAC address table
- The comparison depends on the DNS server
Correct Answer: A
Correct Answer
Answer A is correct because Applying /64 produces fd33:44:55:66::/64 for the first address and fd33:44:55:66::/64 for the second. The prefix values are identical, so the two addresses belong to the same IPv6 subnet.
Incorrect Answers
Answer B is incorrect because The /64 calculation yields fd33:44:55:66::/64 and fd33:44:55:66::/64. The calculated network prefixes are the same, so treating them as different subnets is incorrect. That property separates this option from the other plausible choices in the question.
Answer C is incorrect because Layer 2 MAC learning controls frame forwarding, not the Layer 3 calculation of an IPv6 prefix boundary. The supplied addresses and prefix length are sufficient to compare their /64 network identifiers directly. In the Operations Glenwood Zoe validation, this distinction is directly relevant.
Answer D is incorrect because DNS provides name-to-address resolution; IPv6 prefix membership is determined independently from address bits and prefix length. IPv6 prefix membership comes from comparing network bits, regardless of which DNS resolver is configured. That distinction prevents a valid-looking alternative from meeting the actual requirement.
Question 18
The Nimbus deployment at Heather has reached its verification gate; Ravi is handling CHG-3921. Two IPv6 interfaces use 2001:db8:aaaa:1::1/64 and 2001:db8:aaaa:2::1/64. What does the prefix comparison show? Choose ONE.
- The addresses share the same IPv6 prefix
- The addresses belong to different IPv6 prefixes
- The comparison depends on the MAC address table
- The comparison depends on the DNS server
Correct Answer: B
Correct Answer
Answer B is correct because The /64 calculation yields 2001:db8:aaaa:1::/64 and 2001:db8:aaaa:2::/64. The values differ, so a routed path is needed between those IPv6 prefixes. The device evaluates this property directly when it performs the relevant lookup or interface operation.
Incorrect Answers
Answer A is incorrect because Applying /64 produces 2001:db8:aaaa:1::/64 for the first address and 2001:db8:aaaa:2::/64 for the second. The prefix values differ, so the addresses do not share the same subnet.
Answer C is incorrect because A MAC table maps Ethernet sources to ports and is unrelated to deciding whether IPv6 addresses share a prefix. Prefix membership follows from comparing the network bits defined by the given /64 boundary. In the The Nimbus Heather validation, this distinction is directly relevant.
Answer D is incorrect because Whether two IPv6 values share a network prefix is an addressing calculation, not a function of DNS resolution. The resolver setting does not affect the binary comparison that determines whether addresses share a prefix. The scenario therefore hinges on the specific protocol behavior, not merely on a plausible value.
Question 19
At the Ivory office, Nadia checks a Uplink design assumption while processing CHG-3934. A network engineer encounters IPv6 address fe80::1234 during verification. What address type does it represent? Choose ONE.
- Unique local unicast
- Multicast
- Link-local unicast
- Global unicast
Correct Answer: C
Correct Answer
Answer C is correct because IPv6 link-local unicast addresses use FE80::/10 and support communication such as neighbor discovery on the local link. fe80::1234 matches that defined prefix or special value. Routers do not forward packets with link-local source or destination addresses to other links.
Incorrect Answers
Answer D is incorrect because Global-unicast IPv6 addresses are routable unicast identifiers, with current allocations commonly drawn from 2000::/3. fe80::1234 cannot be placed in this category because its leading bits do not satisfy the defining rule.
Answer A is incorrect because IPv6 unique-local space is FC00::/7, with locally assigned ULA prefixes commonly starting with FD. The prefix characteristics of fe80::1234 correspond to another IPv6 address class. The protocol definition is deterministic, allowing the classification to be checked without relying on topology assumptions or DNS information.
Answer B is incorrect because IPv6 multicast addresses use FF00::/8 and identify a group of interfaces rather than one interface.The defining bit pattern for this category is absent from fe80::1234, which rules out this label.
Question 20
Change CHG-3947 covers the Bridge network at Jasper, where Mira is the assigned verifier. A network engineer encounters IPv6 address fd10:abcd::2 during verification. What address type does it represent? Choose ONE.
- Global unicast
- Link-local unicast
- Multicast
- Unique local unicast
Correct Answer: D
Correct Answer
Answer D is correct because ULAs come from FC00::/7; in practice the locally assigned form typically appears with an FD prefix. fd10:abcd::2 matches that defined prefix or special value. They are intended for local/site communication and are not expected to be routed on the global Internet.
Incorrect Answers
Answer A is incorrect because Global unicast addresses are ordinary routable unicast identifiers; current globally allocated space is commonly within 2000::/3.fd10:abcd::2 belongs to a different IPv6 pattern than the one required for this category.
Answer B is incorrect because fd10:abcd::2 does not use the prefix or reserved form that identifies this IPv6 category. The address category is encoded in the value itself, so applying the defined prefix test is sufficient to reject this alternative.
Answer C is incorrect because IPv6 multicast addresses use FF00::/8 and identify a group of interfaces rather than one interface.fd10:abcd::2 fails the prefix-based identity test for this type and therefore cannot be placed in this category.
