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200-301 · Question #862

Refer to the exhibit. An OSPF neighbor relationship must be configured using these guidelines: - R1 is only permitted to establish a neighbor with R2 - R1 will never participate in DR elections - R1 w

The correct answer is A. interface FastEthernet0/0 ip address 10.100.1.1 255.255.255.252 ip ospf priority 0 ip access-group 102 in router ospf 10 log-adjacency-changes network 10.1.1.1 0.0.0.0 area 0 network 10.100.1.0 0.0.0.3 area 0 router-id 10.1.1.1 access-list 102 permit 89 host 10.100.1.2 host 224.' access-list 102 deny 89 any any access-list 102 permit ip any any. Option A is correct because it sets 'ip ospf priority 0' on the interface, which ensures R1 will never participate in DR/BDR elections (priority 0 = ineligible). The access-list uses protocol number 89 (OSPF) to permit OSPF traffic only from R2's IP (10.100.1.2), blocking OSPF fr

Submitted by rania.sa· Mar 5, 2026Configure and verify single-area and multiarea OSPFv2 for IPv4, including neighbor relationships, DR/BDR election control, and traffic filtering using ACLs - typically covered under IP Connectivity in CCNA/CCNP routing and switching domains.

Question

Refer to the exhibit. An OSPF neighbor relationship must be configured using these guidelines: - R1 is only permitted to establish a neighbor with R2 - R1 will never participate in DR elections - R1 will use a router-id of 101.1.1. Which configuration must be used? A. B. C. D.

Exhibits

200-301 question #862 exhibit 1
200-301 question #862 exhibit 2
200-301 question #862 exhibit 3
200-301 question #862 exhibit 4
200-301 question #862 exhibit 5
200-301 question #862 exhibit 6
200-301 question #862 exhibit 7
200-301 question #862 exhibit 8

Options

  • Ainterface FastEthernet0/0 ip address 10.100.1.1 255.255.255.252 ip ospf priority 0 ip access-group 102 in router ospf 10 log-adjacency-changes network 10.1.1.1 0.0.0.0 area 0 network 10.100.1.0 0.0.0.3 area 0 router-id 10.1.1.1 access-list 102 permit 89 host 10.100.1.2 host 224.' access-list 102 deny 89 any any access-list 102 permit ip any any
  • Binterface Loopback0 ip address 10.1.1.1 255.255.255.255 interface FastEthernet0/0 ip address 10.100.1.1 255.255.255.252 ip ospf priority 100 ip access-group 102 in router ospf 10 log-adjacency-changes network 10.1.1.1 0.0.0.0 area 0 network 10.100.1.0 0.0.0.3 area 0 ospf router-id 10.1.1.1 access-list 102 permit 88 host 10.100.1.2 host 224.' access-list 102 deny 88 any any access-list 102 permit ip any any
  • Cinterface FastEthernet0/0 ip address 10.100.1.1 255.255.255.252 ip ospf priority 100 ip access-group 102 in router ospf 10 log-adjacency-changes network 10.1.1.1 0.0.0.0 area 0 network 10.100.1.0 0.0.0.3 area 0 ospf router-id 10.1.1.1 access-list 102 permit 89 host 10.100.1.2 host 224.' access-list 102 deny 89 any any access-list 102 permit ip any any

How the community answered

(20 responses)
  • A
    65% (13)
  • B
    25% (5)
  • C
    10% (2)

Explanation

Option A is correct because it sets 'ip ospf priority 0' on the interface, which ensures R1 will never participate in DR/BDR elections (priority 0 = ineligible). The access-list uses protocol number 89 (OSPF) to permit OSPF traffic only from R2's IP (10.100.1.2), blocking OSPF from any other neighbor, and the router-id is set to 10.1.1.1 as required. Note: while the question states router-id of 101.1.1 (likely a typo for 10.1.1.1), Option A matches all three stated requirements most accurately.

Topics

#OSPF#DR/BDR Elections#Access Control Lists#Router-ID

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