20+ practice questions focused on OSPF — one of the most tested topics on the CCNA 200-301 v2 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start OSPF PracticeYou are connected to R1. Configure IPv4 and IPv6 addressing on R1's interfaces and verify reachability to R2. The current configuration has a wrong subnet mask on G0/0, missing default gateway for IPv4, and R1's IPv6 address is configured using EUI-64 while R2 uses a static IPv6 address. Fix these issues so that R1 can ping both R2's IPv4 and IPv6 addresses.
Explanation: The problem had three issues: (1) R1's G0/0 subnet mask was /24 (255.255.255.0) but R2's G0/0 was /30 (255.255.255.252), causing an IP subnet mismatch. (2) R1 lacked a default gateway for IPv4; the static route pointed to 192.0.2.254 which is not reachable. (3) R1's IPv6 EUI-64 configuration on G0/0 generates an interface ID from the MAC, but R2 expects a static address 2001:db8:1::2/64, so R1 must use a static IPv6 address on the same subnet. The fix: change R1's G0/0 mask to /30, add a default route via R2's G0/0 IP (192.0.2.2), and configure a static IPv6 address (e.g., 2001:db8:1::1/64) on R1's G0/0.
Which TWO statements about IPv4/IPv6 static routing are true?
Explanation: Option B is correct because the IPv6 default static route uses the destination prefix ::/0, which matches all IPv6 addresses, similar to 0.0.0.0/0 in IPv4. Option D is correct because a floating static route is configured with a higher administrative distance and only becomes active when the primary route (with a lower AD) is removed or fails. Option A is wrong: a floating static route is configured with a higher administrative distance, not lower. Option C is wrong: a directly connected route has an administrative distance of 0, which is always preferred over a static route (even with AD 1). Option E is wrong: IPv4 static routes use the 'ip route' command, while IPv6 static routes use the 'ipv6 route' command; the syntax is different.
A small office uses PAT for user Internet access. What mechanism does PAT use to allow many users to share one public address while keeping their sessions distinct?
Explanation: PAT (Port Address Translation) distinguishes multiple inside sessions by rewriting the source port number for each connection while using the same public IP address. This transport-layer port translation allows many internal hosts to share one outside address without conflict. The correct answer identifies the use of port numbers, which is the core mechanism. Increasing the NAT pool or using static NAT would not enable sharing of a single public address. Changing private IPs to be identical or disabling routes are irrelevant to PAT's operation.
Drag and drop the AAA terms on the left to their correct definitions on the right.
Explanation: AAA components: Authentication verifies identity, Authorization controls access, Accounting logs activities. RADIUS is an open standard that combines authentication and authorization, while TACACS+ is a Cisco proprietary protocol that separates all three functions.
Which three of the following statements about VLAN Trunking Protocol (VTP) are correct? (Choose three.)
Explanation: All three selected statements are correct: VTP pruning reduces unnecessary broadcast traffic by pruning inactive VLANs from trunk links; a VTP server can create/modify/delete VLANs and propagates changes; transparent mode forwards advertisements but does not synchronize. The three distractors are incorrect. D: VTP version 3 is not backward compatible with version 1 and 2; it requires compatible versions. E: A VTP client cannot create local VLANs; it only synchronizes from the server. F: VTP uses multicast MAC address 0100.0CCC.CCCC for advertisements, not 0180.c200.0000 which is used by other protocols like STP.
+15 more OSPF questions available
Practice all OSPF questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of OSPF. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
OSPF questions on the 200-301 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. OSPF is tested as part of the CCNA 200-301 v2 blueprint. Practicing with targeted OSPF questions ensures you can handle any format or difficulty that appears.
Yes. Courseiva provides free 200-301 practice questions across all exam topics and domains. The platform includes topic-based practice, mock exams, missed-question review, bookmarked questions, and readiness tracking — no account required.
Difficulty is subjective, but OSPF is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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