Topic 12 Practice Test 2 covers Single-Area OSPFv2 and FHRP for Cisco Certified Network Associate 200-301 CCNA and maps to objectives 3.4–3.5. 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
OSPF neighbors at Ironwood remain down because one interface is in area 0 and the peer is in area 10. What should be corrected? Choose ONE.
- OSPF area ID
- Device hostname
- OSPF process ID
- HSRP group number
Correct Answer: A
Correct Answer
Answer A is correct because OSPF neighbors on a link must agree on the area assignment; an area mismatch prevents them from becoming adjacent. For CHG-8858 at Ironwood, the network operations analyst checks Ironwood’s protocol state; CHG-8858 is judged from the observable result at Ironwood. For CHG-8858, this choice fits Ironwood: the network operations analyst gets the required Ironwood outcome and can verify CHG-8858 directly.
Incorrect Answers
Answer C is incorrect because The locally configured process ID does not have to match between routers. For CHG-8858 at Ironwood, the network operations analyst checks Ironwood’s protocol state; CHG-8858 is judged from the observable result at Ironwood. For CHG-8858, this choice fails Ironwood: the network operations analyst leaves the required Ironwood condition unmet and, under t12-pt2-q01, should reject it for chg-8858.
Answer B is incorrect because Hostnames are not exchanged as an OSPF adjacency parameter. For CHG-8858 at Ironwood, the network operations analyst checks Ironwood’s protocol state; CHG-8858 is judged from the observable result at Ironwood. For CHG-8858, this choice fails Ironwood: the network operations analyst leaves the required Ironwood condition unmet and, under t12-pt2-q01, should reject it for chg-8858.
Answer D is incorrect because HSRP group numbering is independent of OSPF neighbor formation. For CHG-8858 at Ironwood, the network operations analyst checks Ironwood’s protocol state; CHG-8858 is judged from the observable result at Ironwood. For CHG-8858, this choice fails Ironwood: the network operations analyst leaves the required Ironwood condition unmet and, under t12-pt2-q01, should reject it for chg-8858.
Question 2
At Lakeview, `show ip ospf interface` reveals mismatched hello/dead intervals across a link. Which mismatch is directly relevant to the failed neighbor relationship? Choose ONE.
- Make the OSPF process IDs identical
- Use the same interface description text
- Make the OSPF hello and dead intervals compatible on both ends
- Make the router hostnames identical
Correct Answer: C
Correct Answer
Answer C is correct because OSPF neighbor formation requires matching timer values on a shared network so both routers agree on liveness expectations. For CHG-8875 at Lakeview, the NOC analyst checks Lakeview’s protocol state; CHG-8875 is judged from the observable result at Lakeview. For CHG-8875, this choice fits Lakeview: the NOC analyst gets the required Lakeview outcome and can verify CHG-8875 directly.
Incorrect Answers
Answer A is incorrect because Process IDs are locally significant and need not match. For CHG-8875 at Lakeview, the NOC analyst checks Lakeview’s protocol state; CHG-8875 is judged from the observable result at Lakeview. For CHG-8875, this choice fails Lakeview: the NOC analyst leaves the required Lakeview condition unmet and, under t12-pt2-q02, should reject it for chg-8875.
Answer D is incorrect because OSPF does not require identical hostnames. For CHG-8875 at Lakeview, the NOC analyst checks Lakeview’s protocol state; CHG-8875 is judged from the observable result at Lakeview. For CHG-8875, this choice fails Lakeview: the NOC analyst leaves the required Lakeview condition unmet and, under t12-pt2-q02, should reject it for chg-8875.
Answer B is incorrect because Descriptions are operational labels and do not participate in OSPF adjacency formation. For CHG-8875 at Lakeview, the NOC analyst checks Lakeview’s protocol state; CHG-8875 is judged from the observable result at Lakeview. For CHG-8875, this choice fails Lakeview: the NOC analyst leaves the required Lakeview condition unmet and, under t12-pt2-q02, should reject it for chg-8875.
Question 3
OSPF hellos at Alder are not forming a usable neighbor relationship because the two Ethernet interfaces are addressed in different IPv4 subnets. What should be corrected? Choose ONE.
- The routers must use the same HSRP priority
- The routers must use the same OSPF process ID
- The routers must use the same router ID
- The peers must have compatible Layer 3 addressing on the shared link
Correct Answer: D
Correct Answer
Answer D is correct because OSPFv2 neighbors on a normal shared link need mutually reachable interface addressing in the same subnet in addition to compatible OSPF parameters. For CHG-8892 at Alder, the network operations analyst checks Alder’s protocol state; CHG-8892 is judged from the observable result at Alder. For CHG-8892, this choice fits Alder: the network operations analyst gets the required Alder outcome and can verify CHG-8892 directly.
Incorrect Answers
Answer C is incorrect because Router IDs must be unique rather than identical. For CHG-8892 at Alder, the network operations analyst checks Alder’s protocol state; CHG-8892 is judged from the observable result at Alder. For CHG-8892, this choice fails Alder: the network operations analyst leaves the required Alder condition unmet and, under t12-pt2-q03, should reject it for chg-8892.
Answer B is incorrect because Process IDs can differ because they are locally significant. For CHG-8892 at Alder, the network operations analyst checks Alder’s protocol state; CHG-8892 is judged from the observable result at Alder. For CHG-8892, this choice fails Alder: the network operations analyst leaves the required Alder condition unmet and, under t12-pt2-q03, should reject it for chg-8892.
Answer A is incorrect because HSRP priority has no bearing on OSPF neighbor addressing. For CHG-8892 at Alder, the network operations analyst checks Alder’s protocol state; CHG-8892 is judged from the observable result at Alder. For CHG-8892, this choice fails Alder: the network operations analyst leaves the required Alder condition unmet and, under t12-pt2-q03, should reject it for chg-8892.
Question 4
An engineer at Delta does not want OSPF to derive its router ID from interface addresses. What should be configured? Choose ONE.
- ip default-gateway
- service timestamps
- standby priority on the LAN interface
- router-id under the OSPF process
Correct Answer: D
Correct Answer
Answer D is correct because An explicitly configured OSPF router ID overrides automatic router-ID selection and gives the process a deterministic identifier. For CHG-8909 at Delta, the NOC analyst checks Delta’s protocol state; CHG-8909 is judged from the observable result at Delta. For CHG-8909, this choice fits Delta: the NOC analyst gets the required Delta outcome and can verify CHG-8909 directly.
Incorrect Answers
Answer C is incorrect because HSRP priority selects an HSRP active router and does not define OSPF identity. For CHG-8909 at Delta, the NOC analyst checks Delta’s protocol state; CHG-8909 is judged from the observable result at Delta. For CHG-8909, this choice fails Delta: the NOC analyst leaves the required Delta condition unmet and, under t12-pt2-q04, should reject it for chg-8909.
Answer A is incorrect because Default gateway configuration does not set the OSPF router ID. For CHG-8909 at Delta, the NOC analyst checks Delta’s protocol state; CHG-8909 is judged from the observable result at Delta. For CHG-8909, this choice fails Delta: the NOC analyst leaves the required Delta condition unmet and, under t12-pt2-q04, should reject it for chg-8909.
Answer B is incorrect because Logging timestamp settings are unrelated to OSPF identity. For CHG-8909 at Delta, the NOC analyst checks Delta’s protocol state; CHG-8909 is judged from the observable result at Delta. For CHG-8909, this choice fails Delta: the NOC analyst leaves the required Delta condition unmet and, under t12-pt2-q04, should reject it for chg-8909.
Question 5
A Granite OSPF router selects the highest loopback IPv4 address as its router ID. Which automatic-selection behavior is being observed? Choose ONE.
- The highest IPv4 address on an up/up loopback interface
- The HSRP virtual IP address
- The lowest physical-interface IPv4 address
- The default route next hop
Correct Answer: A
Correct Answer
Answer A is correct because Without an explicit router ID, IOS traditionally prefers the highest IPv4 address on an available loopback over physical-interface addresses. For CHG-8926 at Granite, the network operations analyst checks Granite’s protocol state; CHG-8926 is judged from the observable result at Granite. For CHG-8926, this choice fits Granite: the network operations analyst gets the required Granite outcome and can verify CHG-8926 directly.
Incorrect Answers
Answer C is incorrect because The traditional automatic rule does not prefer the lowest physical address when a loopback is available. For CHG-8926 at Granite, the network operations analyst checks Granite’s protocol state; CHG-8926 is judged from the observable result at Granite. For CHG-8926, this choice fails Granite: the network operations analyst leaves the required Granite condition unmet and, under t12-pt2-q05, should reject it for chg-8926.
Answer B is incorrect because An FHRP virtual gateway is not used as the OSPF router ID selection source. For CHG-8926 at Granite, the network operations analyst checks Granite’s protocol state; CHG-8926 is judged from the observable result at Granite. For CHG-8926, this choice fails Granite: the network operations analyst leaves the required Granite condition unmet and, under t12-pt2-q05, should reject it for chg-8926.
Answer D is incorrect because A routing-table next hop is unrelated to OSPF router-ID selection. For CHG-8926 at Granite, the network operations analyst checks Granite’s protocol state; CHG-8926 is judged from the observable result at Granite. For CHG-8926, this choice fails Granite: the network operations analyst leaves the required Granite condition unmet and, under t12-pt2-q05, should reject it for chg-8926.
Question 6
At Juniper, router A priority is 100 and router B priority is 50 on the same OSPF broadcast network. Which router is the stronger DR candidate? Choose ONE.
- The router with the lowest OSPF cost
- The router with the highest HSRP priority
- The router with the highest OSPF interface priority
- The router with the lowest router ID regardless of priority
Correct Answer: C
Correct Answer
Answer C is correct because On broadcast and NBMA networks, OSPF elects the highest eligible interface priority first; router ID breaks a priority tie. For CHG-8943 at Juniper, the NOC analyst checks Juniper’s protocol state; CHG-8943 is judged from the observable result at Juniper. For CHG-8943, this choice fits Juniper: the NOC analyst gets the required Juniper outcome and can verify CHG-8943 directly.
Incorrect Answers
Answer A is incorrect because Interface cost affects route calculation, not DR election priority. For CHG-8943 at Juniper, the NOC analyst checks Juniper’s protocol state; CHG-8943 is judged from the observable result at Juniper. For CHG-8943, this choice fails Juniper: the NOC analyst leaves the required Juniper condition unmet and, under t12-pt2-q06, should reject it for chg-8943.
Answer D is incorrect because Router ID is a tie-breaker after priority, and higher rather than lower ID wins the tie. For CHG-8943 at Juniper, the NOC analyst checks Juniper’s protocol state; CHG-8943 is judged from the observable result at Juniper. For CHG-8943, this choice fails Juniper: the NOC analyst leaves the required Juniper condition unmet and, under t12-pt2-q06, should reject it for chg-8943.
Answer B is incorrect because HSRP and OSPF elections are independent mechanisms. For CHG-8943 at Juniper, the NOC analyst checks Juniper’s protocol state; CHG-8943 is judged from the observable result at Juniper. For CHG-8943, this choice fails Juniper: the NOC analyst leaves the required Juniper condition unmet and, under t12-pt2-q06, should reject it for chg-8943.
Question 7
A Mesa router should never become OSPF DR or BDR on a LAN. Which priority value makes it ineligible? Choose ONE.
- It sets OSPF cost to zero
- It disables OSPF entirely on the interface
- It forces the router to become DR
- It makes the router ineligible for DR or BDR election
Correct Answer: D
Correct Answer
Answer D is correct because OSPF priority 0 removes the router from DR/BDR candidacy while still allowing it to participate as a neighbor. For CHG-8960 at Mesa, the network operations analyst checks Mesa’s protocol state; CHG-8960 is judged from the observable result at Mesa. For CHG-8960, this choice fits Mesa: the network operations analyst gets the required Mesa outcome and can verify CHG-8960 directly.
Incorrect Answers
Answer C is incorrect because Priority 0 has the opposite effect and prevents election. For CHG-8960 at Mesa, the network operations analyst checks Mesa’s protocol state; CHG-8960 is judged from the observable result at Mesa. For CHG-8960, this choice fails Mesa: the network operations analyst leaves the required Mesa condition unmet and, under t12-pt2-q07, should reject it for chg-8960.
Answer B is incorrect because The interface can still run OSPF and form adjacencies even though it cannot become DR or BDR. For CHG-8960 at Mesa, the network operations analyst checks Mesa’s protocol state; CHG-8960 is judged from the observable result at Mesa. For CHG-8960, this choice fails Mesa: the network operations analyst leaves the required Mesa condition unmet and, under t12-pt2-q07, should reject it for chg-8960.
Answer A is incorrect because DR election priority and path cost are separate interface parameters. For CHG-8960 at Mesa, the network operations analyst checks Mesa’s protocol state; CHG-8960 is judged from the observable result at Mesa. For CHG-8960, this choice fails Mesa: the network operations analyst leaves the required Mesa condition unmet and, under t12-pt2-q07, should reject it for chg-8960.
Question 8
A Pioneer serial point-to-point OSPF link shows a FULL neighbor but no DR or BDR. Is that expected? Choose ONE.
- The higher router ID should always become DR
- HSRP must elect the DR instead
- A DR is mandatory on every OSPF network type
- No DR or BDR is elected on a point-to-point OSPF network
Correct Answer: D
Correct Answer
Answer D is correct because Point-to-point OSPF links do not need DR/BDR election because only two peers share the link. For CHG-8977 at Pioneer, the NOC analyst checks Pioneer’s protocol state; CHG-8977 is judged from the observable result at Pioneer. For CHG-8977, this choice fits Pioneer: the NOC analyst gets the required Pioneer outcome and can verify CHG-8977 directly.
Incorrect Answers
Answer C is incorrect because DR/BDR roles are specific to multiaccess network types such as broadcast and NBMA. For CHG-8977 at Pioneer, the NOC analyst checks Pioneer’s protocol state; CHG-8977 is judged from the observable result at Pioneer. For CHG-8977, this choice fails Pioneer: the NOC analyst leaves the required Pioneer condition unmet and, under t12-pt2-q08, should reject it for chg-8977.
Answer A is incorrect because Router ID election logic does not create DR roles on a point-to-point network type. For CHG-8977 at Pioneer, the NOC analyst checks Pioneer’s protocol state; CHG-8977 is judged from the observable result at Pioneer. For CHG-8977, this choice fails Pioneer: the NOC analyst leaves the required Pioneer condition unmet and, under t12-pt2-q08, should reject it for chg-8977.
Answer B is incorrect because HSRP is a first-hop redundancy protocol and does not supply OSPF DR roles. For CHG-8977 at Pioneer, the NOC analyst checks Pioneer’s protocol state; CHG-8977 is judged from the observable result at Pioneer. For CHG-8977, this choice fails Pioneer: the NOC analyst leaves the required Pioneer condition unmet and, under t12-pt2-q08, should reject it for chg-8977.
Question 9
A Summit Ethernet OSPF segment has DR, BDR, and DROTHER states. Why are DR and BDR used? Choose ONE.
- A designated router and backup designated router are elected
- HSRP active and standby replace OSPF neighbors
- Every router forms FULL adjacency with every other router
- Only static routes are exchanged on Ethernet
Correct Answer: A
Correct Answer
Answer A is correct because Broadcast OSPF uses DR and BDR roles to centralize adjacency and flooding behavior and reduce the number of full adjacencies required. For CHG-8994 at Summit, the network operations analyst checks Summit’s protocol state; CHG-8994 is judged from the observable result at Summit. For CHG-8994, this choice fits Summit: the network operations analyst gets the required Summit outcome and can verify CHG-8994 directly.
Incorrect Answers
Answer C is incorrect because Broadcast OSPF deliberately avoids a full-mesh of full adjacencies among all DROTHER routers. For CHG-8994 at Summit, the network operations analyst checks Summit’s protocol state; CHG-8994 is judged from the observable result at Summit. For CHG-8994, this choice fails Summit: the network operations analyst leaves the required Summit condition unmet and, under t12-pt2-q09, should reject it for chg-8994.
Answer B is incorrect because HSRP default-gateway roles are separate from OSPF database exchange. For CHG-8994 at Summit, the network operations analyst checks Summit’s protocol state; CHG-8994 is judged from the observable result at Summit. For CHG-8994, this choice fails Summit: the network operations analyst leaves the required Summit condition unmet and, under t12-pt2-q09, should reject it for chg-8994.
Answer D is incorrect because OSPF remains a dynamic link-state protocol on Ethernet and can exchange LSAs through the elected roles. For CHG-8994 at Summit, the network operations analyst checks Summit’s protocol state; CHG-8994 is judged from the observable result at Summit. For CHG-8994, this choice fails Summit: the network operations analyst leaves the required Summit condition unmet and, under t12-pt2-q09, should reject it for chg-8994.
Question 10
A Vector engineer wants to confirm whether a peer is FULL/DR, FULL/BDR, or 2-WAY/DROTHER. Which command should be used? Choose ONE.
- show ip route static
- show standby
- show ip ospf neighbor
- show spanning-tree
Correct Answer: C
Correct Answer
Answer C is correct because This command displays OSPFv2 neighbors, including neighbor IDs, priorities, states, dead timers, addresses, and interfaces. For CHG-9011 at Vector, the NOC analyst checks Vector’s protocol state; CHG-9011 is judged from the observable result at Vector. For CHG-9011, this choice fits Vector: the NOC analyst gets the required Vector outcome and can verify CHG-9011 directly.
Incorrect Answers
Answer A is incorrect because That filters static routes and does not report OSPF neighbor state. For CHG-9011 at Vector, the NOC analyst checks Vector’s protocol state; CHG-9011 is judged from the observable result at Vector. For CHG-9011, this choice fails Vector: the NOC analyst leaves the required Vector condition unmet and, under t12-pt2-q10, should reject it for chg-9011.
Answer D is incorrect because Spanning Tree verifies Layer 2 loop-prevention state rather than OSPF adjacency. For CHG-9011 at Vector, the NOC analyst checks Vector’s protocol state; CHG-9011 is judged from the observable result at Vector. For CHG-9011, this choice fails Vector: the NOC analyst leaves the required Vector condition unmet and, under t12-pt2-q10, should reject it for chg-9011.
Answer B is incorrect because `show standby` verifies HSRP groups and roles, not OSPF neighbors. For CHG-9011 at Vector, the NOC analyst checks Vector’s protocol state; CHG-9011 is judged from the observable result at Vector. For CHG-9011, this choice fails Vector: the NOC analyst leaves the required Vector condition unmet and, under t12-pt2-q10, should reject it for chg-9011.
Question 11
A Yarrow engineer blames OSPF process-ID mismatch for a failed adjacency. Which statement about the process ID is correct? Choose ONE.
- No; because HSRP automatically translates the process ID
- Yes; process ID must equal the area ID
- Yes; process IDs must be identical on every OSPF neighbor
- No; OSPF process IDs are locally significant
Correct Answer: D
Correct Answer
Answer D is correct because The process ID identifies a local IOS routing process and is not an adjacency parameter that must match between neighboring routers. For CHG-9028 at Yarrow, the network operations analyst checks Yarrow’s protocol state; CHG-9028 is judged from the observable result at Yarrow. For CHG-9028, this choice fits Yarrow: the network operations analyst gets the required Yarrow outcome and can verify CHG-9028 directly.
Incorrect Answers
Answer C is incorrect because Matching process IDs are not required for OSPF neighbor formation. For CHG-9028 at Yarrow, the network operations analyst checks Yarrow’s protocol state; CHG-9028 is judged from the observable result at Yarrow. For CHG-9028, this choice fails Yarrow: the network operations analyst leaves the required Yarrow condition unmet and, under t12-pt2-q11, should reject it for chg-9028.
Answer B is incorrect because Process ID and area ID are separate concepts and can have different values. For CHG-9028 at Yarrow, the network operations analyst checks Yarrow’s protocol state; CHG-9028 is judged from the observable result at Yarrow. For CHG-9028, this choice fails Yarrow: the network operations analyst leaves the required Yarrow condition unmet and, under t12-pt2-q11, should reject it for chg-9028.
Answer A is incorrect because HSRP has no role in OSPF process-ID handling. For CHG-9028 at Yarrow, the network operations analyst checks Yarrow’s protocol state; CHG-9028 is judged from the observable result at Yarrow. For CHG-9028, this choice fails Yarrow: the network operations analyst leaves the required Yarrow condition unmet and, under t12-pt2-q11, should reject it for chg-9028.
Question 12
An OSPF `network` statement at Birch matches an interface address and assigns that interface to area 0. What does the wildcard expression control? Choose ONE.
- The HSRP virtual network
- The DNS search domain
- A route that is statically installed in the RIB
- Which local interfaces participate in OSPF and the area assigned to them
Correct Answer: D
Correct Answer
Answer D is correct because The IOS OSPF network statement matches local interface addresses with a wildcard and enables the process on matching interfaces in the specified area. For CHG-9045 at Birch, the NOC analyst checks Birch’s protocol state; CHG-9045 is judged from the observable result at Birch. For CHG-9045, this choice fits Birch: the NOC analyst gets the required Birch outcome and can verify CHG-9045 directly.
Incorrect Answers
Answer C is incorrect because The OSPF network statement is not a static routing command. For CHG-9045 at Birch, the NOC analyst checks Birch’s protocol state; CHG-9045 is judged from the observable result at Birch. For CHG-9045, this choice fails Birch: the NOC analyst leaves the required Birch condition unmet and, under t12-pt2-q12, should reject it for chg-9045.
Answer A is incorrect because HSRP virtual gateways are configured on interfaces and are unrelated to OSPF network-statement matching. For CHG-9045 at Birch, the NOC analyst checks Birch’s protocol state; CHG-9045 is judged from the observable result at Birch. For CHG-9045, this choice fails Birch: the NOC analyst leaves the required Birch condition unmet and, under t12-pt2-q12, should reject it for chg-9045.
Answer B is incorrect because DNS domain configuration has no connection to OSPF interface selection. For CHG-9045 at Birch, the NOC analyst checks Birch’s protocol state; CHG-9045 is judged from the observable result at Birch. For CHG-9045, this choice fails Birch: the NOC analyst leaves the required Birch condition unmet and, under t12-pt2-q12, should reject it for chg-9045.
Question 13
A Elm engineer wants to enable OSPF directly under GigabitEthernet0/1 instead of using a network statement. Which syntax fits? Choose ONE.
- ip ospf 10 area 0
- ip helper-address 10.0.0.1
- standby 10 ip 10.0.0.1
- ip nat inside
Correct Answer: A
Correct Answer
Answer A is correct because The interface command directly associates the interface with OSPF process 10 and area 0. For CHG-9062 at Elm, the network operations analyst checks Elm’s protocol state; CHG-9062 is judged from the observable result at Elm. For CHG-9062, this choice fits Elm: the network operations analyst gets the required Elm outcome and can verify CHG-9062 directly.
Incorrect Answers
Answer C is incorrect because That enables an HSRP group and virtual IP rather than OSPF. For CHG-9062 at Elm, the network operations analyst checks Elm’s protocol state; CHG-9062 is judged from the observable result at Elm. For CHG-9062, this choice fails Elm: the network operations analyst leaves the required Elm condition unmet and, under t12-pt2-q13, should reject it for chg-9062.
Answer B is incorrect because That configures UDP broadcast relay such as DHCP, not OSPF. For CHG-9062 at Elm, the network operations analyst checks Elm’s protocol state; CHG-9062 is judged from the observable result at Elm. For CHG-9062, this choice fails Elm: the network operations analyst leaves the required Elm condition unmet and, under t12-pt2-q13, should reject it for chg-9062.
Answer D is incorrect because That marks an interface for NAT translation direction and does not enable OSPF. For CHG-9062 at Elm, the network operations analyst checks Elm’s protocol state; CHG-9062 is judged from the observable result at Elm. For CHG-9062, this choice fails Elm: the network operations analyst leaves the required Elm condition unmet and, under t12-pt2-q13, should reject it for chg-9062.
Question 14
A Highland access VLAN should remain in OSPF advertisements, but no OSPF neighbors should form on that interface. What should be configured? Choose ONE.
- Set the OSPF interface priority to 0
- Configure HSRP preempt
- OSPF passive interface
- Disable IP routing
Correct Answer: C
Correct Answer
Answer C is correct because A passive OSPF interface suppresses hello packets and neighbor formation while the connected network can still be advertised by the OSPF process. For CHG-9079 at Highland, the NOC analyst checks Highland’s protocol state; CHG-9079 is judged from the observable result at Highland. For CHG-9079, this choice fits Highland: the NOC analyst gets the required Highland outcome and can verify CHG-9079 directly.
Incorrect Answers
Answer A is incorrect because Priority 0 blocks DR/BDR election but the interface still sends hellos and can form neighbors. For CHG-9079 at Highland, the NOC analyst checks Highland’s protocol state; CHG-9079 is judged from the observable result at Highland. For CHG-9079, this choice fails Highland: the NOC analyst leaves the required Highland condition unmet and, under t12-pt2-q14, should reject it for chg-9079.
Answer D is incorrect because Disabling routing would break the routing function rather than selectively suppress OSPF hellos. For CHG-9079 at Highland, the NOC analyst checks Highland’s protocol state; CHG-9079 is judged from the observable result at Highland. For CHG-9079, this choice fails Highland: the NOC analyst leaves the required Highland condition unmet and, under t12-pt2-q14, should reject it for chg-9079.
Answer B is incorrect because HSRP preemption controls first-hop active-router selection, not OSPF hello transmission. For CHG-9079 at Highland, the NOC analyst checks Highland’s protocol state; CHG-9079 is judged from the observable result at Highland. For CHG-9079, this choice fails Highland: the NOC analyst leaves the required Highland condition unmet and, under t12-pt2-q14, should reject it for chg-9079.
Question 15
The Kodiak routing table chooses an OSPF route with cost 15 over another path with cost 30. What rule is being applied? Choose ONE.
- The path with the higher process ID
- The path through the HSRP active router regardless of cost
- The path with higher cost
- The path with lower total OSPF cost
Correct Answer: D
Correct Answer
Answer D is correct because OSPF uses cost as its path metric and prefers the lower accumulated cost to the destination. For CHG-9096 at Kodiak, the network operations analyst checks Kodiak’s protocol state; CHG-9096 is judged from the observable result at Kodiak. For CHG-9096, this choice fits Kodiak: the network operations analyst gets the required Kodiak outcome and can verify CHG-9096 directly.
Incorrect Answers
Answer C is incorrect because Higher OSPF cost is less preferred. For CHG-9096 at Kodiak, the network operations analyst checks Kodiak’s protocol state; CHG-9096 is judged from the observable result at Kodiak. For CHG-9096, this choice fails Kodiak: the network operations analyst leaves the required Kodiak condition unmet and, under t12-pt2-q15, should reject it for chg-9096.
Answer B is incorrect because HSRP first-hop roles do not override OSPF metric calculation for routed destinations. For CHG-9096 at Kodiak, the network operations analyst checks Kodiak’s protocol state; CHG-9096 is judged from the observable result at Kodiak. For CHG-9096, this choice fails Kodiak: the network operations analyst leaves the required Kodiak condition unmet and, under t12-pt2-q15, should reject it for chg-9096.
Answer A is incorrect because The local OSPF process ID is not a route-selection metric. For CHG-9096 at Kodiak, the network operations analyst checks Kodiak’s protocol state; CHG-9096 is judged from the observable result at Kodiak. For CHG-9096, this choice fails Kodiak: the network operations analyst leaves the required Kodiak condition unmet and, under t12-pt2-q15, should reject it for chg-9096.
Question 16
A Nimbus LAN has two HSRP routers. Clients were configured with the physical address of router A and lose connectivity when it fails. What should the clients use instead? Choose ONE.
- The OSPF router ID
- The DNS server IP address
- The current active router’s physical IP address
- The HSRP virtual IP address
Correct Answer: D
Correct Answer
Answer D is correct because HSRP presents a shared virtual gateway IP that remains the host default gateway while active responsibility moves between routers. For CHG-9113 at Nimbus, the NOC analyst checks Nimbus’s protocol state; CHG-9113 is judged from the observable result at Nimbus. For CHG-9113, this choice fits Nimbus: the NOC analyst gets the required Nimbus outcome and can verify CHG-9113 directly.
Incorrect Answers
Answer C is incorrect because Using a physical address ties clients to one device and defeats transparent FHRP failover. For CHG-9113 at Nimbus, the NOC analyst checks Nimbus’s protocol state; CHG-9113 is judged from the observable result at Nimbus. For CHG-9113, this choice fails Nimbus: the NOC analyst leaves the required Nimbus condition unmet and, under t12-pt2-q16, should reject it for chg-9113.
Answer A is incorrect because Router ID identifies an OSPF process and is not a host default-gateway address. For CHG-9113 at Nimbus, the NOC analyst checks Nimbus’s protocol state; CHG-9113 is judged from the observable result at Nimbus. For CHG-9113, this choice fails Nimbus: the NOC analyst leaves the required Nimbus condition unmet and, under t12-pt2-q16, should reject it for chg-9113.
Answer B is incorrect because DNS provides name resolution, not first-hop gateway redundancy. For CHG-9113 at Nimbus, the NOC analyst checks Nimbus’s protocol state; CHG-9113 is judged from the observable result at Nimbus. For CHG-9113, this choice fails Nimbus: the NOC analyst leaves the required Nimbus condition unmet and, under t12-pt2-q16, should reject it for chg-9113.
Question 17
A Cedar `show standby` output labels one device Active and another Standby. Which device currently handles frames sent to the HSRP virtual gateway? Choose ONE.
- The active HSRP router
- The OSPF DR
- The standby HSRP router
- Every HSRP group member simultaneously
Correct Answer: A
Correct Answer
Answer A is correct because HSRP elects one active device to forward traffic for the virtual gateway, with a standby device ready to assume the role on failure. For CHG-9130 at Cedar, the network operations analyst checks Cedar’s protocol state; CHG-9130 is judged from the observable result at Cedar. For CHG-9130, this choice fits Cedar: the network operations analyst gets the required Cedar outcome and can verify CHG-9130 directly.
Incorrect Answers
Answer C is incorrect because The standby is prepared for failover but does not normally forward traffic on behalf of the virtual gateway while the active device is healthy. For CHG-9130 at Cedar, the network operations analyst checks Cedar’s protocol state; CHG-9130 is judged from the observable result at Cedar. For CHG-9130, this choice fails Cedar: the network operations analyst leaves the required Cedar condition unmet and, under t12-pt2-q17, should reject it for chg-9130.
Answer B is incorrect because OSPF DR status controls LSA exchange on a segment and is independent of HSRP forwarding roles. For CHG-9130 at Cedar, the network operations analyst checks Cedar’s protocol state; CHG-9130 is judged from the observable result at Cedar. For CHG-9130, this choice fails Cedar: the network operations analyst leaves the required Cedar condition unmet and, under t12-pt2-q17, should reject it for chg-9130.
Answer D is incorrect because HSRP normal operation designates a single active forwarder for the virtual gateway rather than all members forwarding identically. For CHG-9130 at Cedar, the network operations analyst checks Cedar’s protocol state; CHG-9130 is judged from the observable result at Cedar. For CHG-9130, this choice fails Cedar: the network operations analyst leaves the required Cedar condition unmet and, under t12-pt2-q17, should reject it for chg-9130.
Question 18
A Falcon HSRP device with priority 120 is preferred over a peer with default priority 100. What parameter drives that election preference? Choose ONE.
- Router B with priority 100
- The router with the lower process ID
- Router A with priority 120
- The router with the lower OSPF cost
Correct Answer: C
Correct Answer
Answer C is correct because HSRP prefers the device with the higher configured priority; the default priority is 100 when no different value is set. For CHG-9147 at Falcon, the NOC analyst checks Falcon’s protocol state; CHG-9147 is judged from the observable result at Falcon. For CHG-9147, this choice fits Falcon: the NOC analyst gets the required Falcon outcome and can verify CHG-9147 directly.
Incorrect Answers
Answer A is incorrect because A lower HSRP priority is less preferred when other election conditions are equal. For CHG-9147 at Falcon, the NOC analyst checks Falcon’s protocol state; CHG-9147 is judged from the observable result at Falcon. For CHG-9147, this choice fails Falcon: the NOC analyst leaves the required Falcon condition unmet and, under t12-pt2-q18, should reject it for chg-9147.
Answer D is incorrect because OSPF cost does not select the HSRP active device. For CHG-9147 at Falcon, the NOC analyst checks Falcon’s protocol state; CHG-9147 is judged from the observable result at Falcon. For CHG-9147, this choice fails Falcon: the NOC analyst leaves the required Falcon condition unmet and, under t12-pt2-q18, should reject it for chg-9147.
Answer B is incorrect because OSPF process IDs are unrelated to HSRP election. For CHG-9147 at Falcon, the NOC analyst checks Falcon’s protocol state; CHG-9147 is judged from the observable result at Falcon. For CHG-9147, this choice fails Falcon: the NOC analyst leaves the required Falcon condition unmet and, under t12-pt2-q18, should reject it for chg-9147.
Question 19
At Indigo, operators want the higher-priority HSRP router to reclaim the Active role automatically when it recovers. What should be enabled? Choose ONE.
- DHCP relay
- NAT overload
- OSPF passive-interface
- HSRP preempt
Correct Answer: D
Correct Answer
Answer D is correct because Preemption allows a router with a better HSRP priority to take the active role from a currently active lower-priority peer after it becomes eligible. For CHG-9164 at Indigo, the network operations analyst checks Indigo’s protocol state; CHG-9164 is judged from the observable result at Indigo. For CHG-9164, this choice fits Indigo: the network operations analyst gets the required Indigo outcome and can verify CHG-9164 directly.
Incorrect Answers
Answer C is incorrect because That suppresses OSPF hellos and has no effect on HSRP role reclamation. For CHG-9164 at Indigo, the network operations analyst checks Indigo’s protocol state; CHG-9164 is judged from the observable result at Indigo. For CHG-9164, this choice fails Indigo: the network operations analyst leaves the required Indigo condition unmet and, under t12-pt2-q19, should reject it for chg-9164.
Answer B is incorrect because PAT changes address/port translation and does not affect FHRP election. For CHG-9164 at Indigo, the network operations analyst checks Indigo’s protocol state; CHG-9164 is judged from the observable result at Indigo. For CHG-9164, this choice fails Indigo: the network operations analyst leaves the required Indigo condition unmet and, under t12-pt2-q19, should reject it for chg-9164.
Answer A is incorrect because DHCP relay forwards client broadcasts and cannot control HSRP active selection. For CHG-9164 at Indigo, the network operations analyst checks Indigo’s protocol state; CHG-9164 is judged from the observable result at Indigo. For CHG-9164, this choice fails Indigo: the network operations analyst leaves the required Indigo condition unmet and, under t12-pt2-q19, should reject it for chg-9164.
Question 20
A Lumen router remains HSRP active even after losing its upstream interface. What HSRP enhancement can lower its priority when the tracked object fails? Choose ONE.
- Static route recursion
- DNS caching
- OSPF router-ID selection
- HSRP interface/object tracking
Correct Answer: D
Correct Answer
Answer D is correct because Tracking can decrement HSRP priority when an important interface or object fails, allowing a healthier peer to become active. For CHG-9181 at Lumen, the NOC analyst checks Lumen’s protocol state; CHG-9181 is judged from the observable result at Lumen. For CHG-9181, this choice fits Lumen: the NOC analyst gets the required Lumen outcome and can verify CHG-9181 directly.
Incorrect Answers
Answer C is incorrect because Router ID does not monitor uplink health for HSRP. For CHG-9181 at Lumen, the NOC analyst checks Lumen’s protocol state; CHG-9181 is judged from the observable result at Lumen. For CHG-9181, this choice fails Lumen: the NOC analyst leaves the required Lumen condition unmet and, under t12-pt2-q20, should reject it for chg-9181.
Answer A is incorrect because Recursive route resolution does not directly adjust HSRP election priority. For CHG-9181 at Lumen, the NOC analyst checks Lumen’s protocol state; CHG-9181 is judged from the observable result at Lumen. For CHG-9181, this choice fails Lumen: the NOC analyst leaves the required Lumen condition unmet and, under t12-pt2-q20, should reject it for chg-9181.
Answer B is incorrect because DNS cache state has no relationship to first-hop redundancy priority. For CHG-9181 at Lumen, the NOC analyst checks Lumen’s protocol state; CHG-9181 is judged from the observable result at Lumen. For CHG-9181, this choice fails Lumen: the NOC analyst leaves the required Lumen condition unmet and, under t12-pt2-q20, should reject it for chg-9181.
