Topic 04 Practice Test 1 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
At Cedar, Nia validates the Atlas cutover under change CHG-3180. A network engineer encounters IPv6 address fe80::21b:54ff:feaa:10 during verification. What address type does it represent? Choose ONE.
- Link-local unicast
- Global unicast
- Unique local unicast
- Multicast
Correct Answer: A
Correct Answer
Answer A is correct because IPv6 link-local unicast addresses use FE80::/10 and support communication such as neighbor discovery on the local link. fe80::21b:54ff:feaa:10 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 B is incorrect because Global unicast addresses are ordinary routable unicast identifiers; current globally allocated space is commonly within 2000::/3.The address form shown by fe80::21b:54ff:feaa:10 does not correspond to this category’s defined prefix or special value.
Answer C is incorrect because fe80::21b:54ff:feaa:10 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 D is incorrect because The defining range for this address type excludes fe80::21b:54ff:feaa:10, so this classification is not valid. The address is evaluated against a standards-defined prefix boundary, which makes this classification test repeatable during verification.
Question 2
The Helix migration at Juniper is in pre-check, and Mei owns ticket CHG-3193. A network engineer encounters IPv6 address fd12:3456:789a::20 during verification. What address type does it represent? Choose ONE.
- Multicast
- Unique local unicast
- Global unicast
- Link-local unicast
Correct Answer: B
Correct Answer
Answer B is correct because IPv6 unique-local space is FC00::/7, with locally assigned ULA prefixes commonly starting with FD. fd12:3456:789a::20 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 C is incorrect because Global unicast addresses are ordinary routable unicast identifiers; current globally allocated space is commonly within 2000::/3.The prefix and reserved-value rules for this category do not match fd12:3456:789a::20, eliminating this classification.
Answer D is incorrect because An address in FE80::/10 is link-local, a scope used for same-link IPv6 communication and neighbor discovery. fd12:3456:789a::20 falls outside the range or special value that defines this IPv6 type.
Answer A is incorrect because The FF00::/8 prefix identifies IPv6 multicast, where one address represents a group of interfaces. Comparing fd12:3456:789a::20 with the category prefix shows that the address belongs to a different IPv6 type.
Question 3
During Maple’s Orbit maintenance window, Maya performs the network acceptance test for CHG-3206. A network engineer encounters IPv6 address 2001:db8:40::25 during verification. What address type does it represent? Choose ONE.
- Link-local unicast
- Multicast
- Global unicast
- Unique local unicast
Correct Answer: C
Correct Answer
Answer C is correct because Global-unicast IPv6 addresses are routable unicast identifiers, with current allocations commonly drawn from 2000::/3. 2001:db8:40::25 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 D is incorrect because ULAs come from FC00::/7; in practice the locally assigned form typically appears with an FD prefix. 2001:db8:40::25 lacks the bit pattern required for this category and must be classified differently.
Answer A is incorrect because The FE80::/10 prefix denotes link-local unicast space, which IPv6 nodes use for operations confined to one link. This category is identified by another IPv6 prefix pattern, not the one shown by 2001:db8:40::25.
Answer B is incorrect because IPv6 reserves FF00::/8 for multicast groups instead of individual unicast interface identities. The address 2001:db8:40::25 is outside the defined space for this type, which rules out the choice.
Question 4
For ticket CHG-3219, Vikram is reviewing the Vector rollout at the Harbor site. A network engineer encounters IPv6 address ff02::1 during verification. What address type does it represent? Choose ONE.
- Global unicast
- Link-local unicast
- Unique local unicast
- Multicast
Correct Answer: D
Correct Answer
Answer D is correct because An IPv6 value beginning in FF00::/8 is multicast and targets a group, not a single unicast interface. ff02::1 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 A is incorrect because Ordinary globally routable IPv6 unicast space is commonly recognized within the currently allocated 2000::/3 range. This IPv6 class has a specific prefix signature that is absent from ff02::1. The prefix evidence rules out this type and points to another IPv6 class with different scope or forwarding characteristics.
Answer B is incorrect because IPv6 link-local unicast addresses use FE80::/10 and support communication such as neighbor discovery on the local link. Applying the category boundary to ff02::1 produces no match, so the proposed type is incorrect.
Answer C is incorrect because The unique-local category is defined by FC00::/7, and locally generated assignments commonly use FD at the start. ff02::1 cannot be placed in this category because its leading bits do not satisfy the defining rule.
Question 5
Before Summit hands the Cascade service to operations, June must close verification item CHG-3232. Two IPv6 interfaces use 2001:db8:10:20::1/64 and 2001:db8:10:20::abcd/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 2001:db8:10:20::/64 for the first address and 2001:db8:10:20::/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 2001:db8:10:20::/64 and 2001:db8:10:20::/64. The calculated network prefixes are the same, so treating them as different subnets is incorrect. This is the relevant behavior an administrator would confirm before accepting the change.
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.
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. This is the property an engineer would confirm during an implementation or troubleshooting check.
Question 6
A peer review for Junction at Canyon assigns Talia the evidence check recorded as CHG-3245. Two IPv6 interfaces use 2001:db8:10:20::1/64 and 2001:db8:10:21::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:db8:10:20::/64 and 2001:db8:10:21::/64. The values differ, so a routed path is needed between those IPv6 prefixes. The relevant state can be verified from the protocol information and configuration described here.
Incorrect Answers
Answer A is incorrect because Applying /64 produces 2001:db8:10:20::/64 for the first address and 2001:db8:10:21::/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.
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 alternative fails because the operational result differs from what the scenario explicitly requires.
Question 7
The Riverbend branch is staging Quantum; Amina is completing the implementation checklist for CHG-3258. Which compressed IPv6 notation correctly represents 2001:0db8:0000:0000:0000:0000:0000:0042? Choose ONE.
- 2001:db8:::42
- 2001:db8::ffff
- 2001:db8::42
- 2001:0db8:0000:0000:0000:0000:0042
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::42 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.
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.
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.
Question 8
As part of Xray readiness at Lakeside, Marco investigates the condition logged in CHG-3271. Which compressed IPv6 notation correctly represents fd12:0000:0000:0001:0000:0000:0000:0010? Choose ONE.
- fd12:0000:0000:0001:0000:0000:0010
- fd12:0:0:1:::10
- fd12:0:0:10::10
- fd12:0:0:1::10
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 fd12:0:0:1::10 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.
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.
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.
Question 9
Operations at Westfield asks Elena to validate Engine before approving change CHG-3284. Interface GigabitEthernet0/0 uses MAC address 00:1b:54:aa:10:20 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:db8:44:10:21b:54ff:feaa:1020
- 2001:db8:44:10:1b:54ff:feaa:1020
- 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; 00:1b:54:aa:10:20 therefore produces interface ID 021b:54ff:feaa:1020. Appending that 64-bit interface ID to 2001:db8:44:10::/64 yields 2001:db8:44:10:21b:54ff:feaa:1020.
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.
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.
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.
Question 10
The Drift deployment at Eastgate has reached its verification gate; Mateo is handling CHG-3297. Interface GigabitEthernet0/0 uses MAC address 00:25:96:12:34:56 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:db8:44:10:225:96ff:fe12:3456
- 2001:db8:44:10:25:96ff:fe12:3456
- 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; 00:25:96:12:34:56 therefore produces interface ID 0225:96ff:fe12:3456. Appending that 64-bit interface ID to 2001:db8:44:10::/64 yields 2001:db8:44:10:225:96ff:fe12:3456.
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 Drift Eastgate 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 Drift Eastgate 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 Drift Eastgate validation, this distinction is directly relevant.
Question 11
At the Northpoint office, Salim checks a Keystone design assumption while processing CHG-3310. 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.
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. The protocol rule makes this distinction observable during configuration validation and troubleshooting.
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.
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.
Question 12
Change CHG-3323 covers the Relay network at Southridge, where Omar is the assigned verifier. 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.
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 correct choice aligns both with the configured state and with the resulting network behavior.
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. The network behavior is determined by this rule when the stated values are applied.
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. This difference is important because the same device can treat otherwise similar values in different ways.
Question 13
At Pinecrest, Rosa validates the Yonder cutover under change CHG-3336. 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.
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.
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. The scenario tests that exact distinction as it would appear during a practical verification workflow.
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. The expected result follows from the device state and protocol semantics given in the question.
Question 14
The Frontier migration at Brookhaven is in pre-check, and Dario owns ticket CHG-3349. 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.
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 engineer must match the requested behavior, not just choose a value that is generally valid elsewhere.
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. This criterion is what separates the correct operational result from the other plausible alternatives.
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 network device applies this rule consistently when processing the described configuration or traffic.
Question 15
During Oakmont’s Matrix maintenance window, Iris performs the network acceptance test for CHG-3362. A network engineer encounters IPv6 address ff02::1:ff00:1234 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 The FF00::/8 prefix identifies IPv6 multicast, where one address represents a group of interfaces. ff02::1:ff00:1234 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 A global-unicast address represents one routable interface and current global allocations commonly fall under 2000::/3. The prefix characteristics of ff02::1:ff00:1234 correspond to another IPv6 address class. The address is evaluated against a standards-defined prefix boundary, which makes this classification test repeatable during verification.
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::1:ff00:1234 does not use the prefix or reserved form that identifies this IPv6 category.
Answer B is incorrect because IPv6 unique-local space is FC00::/7, with locally assigned ULA prefixes commonly starting with FD. The defining range for this address type excludes ff02::1:ff00:1234, so this classification is not valid.
Question 16
For ticket CHG-3375, Kiran is reviewing the Transit rollout at the Redstone site. A network engineer encounters IPv6 address 2001:db8:9999::1 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 Global-unicast IPv6 addresses are routable unicast identifiers, with current allocations commonly drawn from 2000::/3. 2001:db8:9999::1 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 ULAs come from FC00::/7; in practice the locally assigned form typically appears with an FD prefix. Comparing 2001:db8:9999::1 with the category prefix shows that the address belongs to a different IPv6 type.
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 category has a distinct prefix signature that 2001:db8:9999::1 does not exhibit.
Answer C is incorrect because IPv6 reserves FF00::/8 for multicast groups instead of individual unicast interface identities. 2001:db8:9999::1 lacks the bit pattern required for this category and must be classified differently. The decisive evidence is the address prefix, which determines the IPv6 category and the scope in which the value can be used.
Question 17
Before Silverlake hands the Aperture service to operations, Imran must close verification item CHG-3388. Two IPv6 interfaces use fd20:1:2:3::1/64 and fd20:1:2:3::ffff/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 fd20:1:2:3::/64 for the first address and fd20:1:2:3::/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 fd20:1:2:3::/64 and fd20:1:2:3::/64. The calculated network prefixes are the same, so treating them as different subnets is incorrect. The resulting device state distinguishes this answer from the related but incorrect alternatives.
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 Before Silverlake Aperture 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 outcome is determined by the stated addressing or forwarding condition rather than by naming convention.
Question 18
A peer review for Harrier at Greenfield assigns Jonas the evidence check recorded as CHG-3401. Two IPv6 interfaces use 2001:db8:5:1::1/64 and 2001:db8:5:2::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:db8:5:1::/64 and 2001:db8:5:2::/64. The values differ, so a routed path is needed between those IPv6 prefixes. That makes the option unsuitable for this specific verification goal even if it is valid in another context.
Incorrect Answers
Answer A is incorrect because Applying /64 produces 2001:db8:5:1::/64 for the first address and 2001:db8:5:2::/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 A Harrier Greenfield 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. This matters during verification because the configured value determines the device behavior being tested.
Question 19
The Hillcrest branch is staging Gemini; Anya is completing the implementation checklist for CHG-3414. A network engineer encounters IPv6 address fe80::beef 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::beef 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 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 fe80::beef.
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 fe80::beef is outside the defined space for this type, which rules out the choice.
Answer B is incorrect because An IPv6 value beginning in FF00::/8 is multicast and targets a group, not a single unicast interface. This IPv6 class has a specific prefix signature that is absent from fe80::beef.
Question 20
As part of Nova readiness at Fairview, Yusuf investigates the condition logged in CHG-3427. A network engineer encounters IPv6 address fd77:88:99::5 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. fd77:88:99::5 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 A global-unicast address represents one routable interface and current global allocations commonly fall under 2000::/3. Applying the category boundary to fd77:88:99::5 produces no match, so the proposed type is incorrect.
Answer B is incorrect because An address in FE80::/10 is link-local, a scope used for same-link IPv6 communication and neighbor discovery. fd77:88:99::5 cannot be placed in this category because its leading bits do not satisfy the defining rule.
Answer C is incorrect because The FF00::/8 prefix identifies IPv6 multicast, where one address represents a group of interfaces. The prefix characteristics of fd77:88:99::5 correspond to another IPv6 address class. That classification would imply a different prefix pattern from the one present in the address, making the option operationally inconsistent.
