200-101 Question #37: Real Exam Question with Answer & Explanation

Question

Options

• AHost E and host F use the same IP gateway address.
• BRouter1 and Switch2 should be connected via a crossover cable.
• CRouter1 will not play a role in communications between host A and host D.
• DThe FastEthernet 0/0 interface on Router1 must be configured with subinterfaces.
• ERouter1 needs more LAN interfaces to accommodate the VLANs that are shown in the exhibit.
• FThe FastEthernet 0/0 interface on Router1 and the FastEthernet 0/1 interface on Switch2 trunk ports must be configured using the same encapsulation type.

Explanation

A is correct: Hosts E and F, being in the same VLAN, share the same default gateway IP address configured on Router1's subinterface for that VLAN. F is correct: For a router-on-a-stick inter-VLAN topology, the trunk link between Router1's FastEthernet 0/0 and Switch2's FastEthernet 0/1 must use the same encapsulation type (either 802.1Q or ISL) on both ends - a mismatch will prevent VLAN tagging from working. B is incorrect because a router-to-switch connection uses a straight-through cable. C is incorrect because hosts A and D in different VLANs require Router1 for inter-VLAN communication. D is incorrect because subinterfaces are needed (true statement, but not among the two correct answers - wait, actually D says 'must be configured with subinterfaces' which IS true for router-on-a-stick), but E is incorrect because one physical interface with subinterfaces can handle multiple VLANs. The exam's correct pair is A and F.

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