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300-410 Practice Question: Which TWO statements correctly describe the…
Which TWO statements correctly describe the behavior of route summarization in RIP? (Choose TWO.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
RIPv2 automatically summarizes routes to their classful boundary by default, and this behavior can be disabled with the 'no auto-summary' command.
RIPv2 automatically summarizes classful routes by default; this can be disabled with 'no auto-summary'. Manual summarization is configured per interface with 'ip summary-address rip', and the summary route is advertised with the metric (hop count) of the best component route—i.e., the lowest hop count among the contributing routes. Option C is incorrect because while a discard route is often installed to prevent loops, the statement 'RIP automatically installs a discard route' is not universally true for all manual summarizations; in many implementations, the discard route is created only when the summary route is more specific than the component routes, not automatically for every manual summary.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
RIPv2 automatically summarizes routes to their classful boundary by default, and this behavior can be disabled with the 'no auto-summary' command.
Why this is correct
Correct. RIPv2 has auto-summary enabled by default, which causes classful summarization. It can be disabled to allow VLSM and CIDR prefixes.
- ✗
Manual route summarization in RIP is configured using the 'network' command under the RIP process.
Why it's wrong here
Incorrect. Manual summarization in RIP is configured with the 'ip summary-address rip' interface command, not the 'network' command.
- ✗
When manual summarization is configured, RIP automatically installs a discard route for the summary prefix to prevent routing loops.
Why it's wrong here
Incorrect. Although RIP may install a discard route in some cases, the statement that it is automatically installed for all manual summarizations is not accurate. The key correct behavior is the metric propagation described in option D.
- ✓
The summary route in RIP is advertised with a metric equal to the lowest hop count among the component routes.
Why this is correct
Correct. The summary route inherits the metric (lowest hop count) from the best component route, ensuring that the summary represents the best path.
- ✗
RIP supports both automatic and manual summarization only for classful networks.
Why it's wrong here
Incorrect. Manual summarization in RIP can be used for any prefix length, not just classful boundaries, as long as auto-summary is disabled.
Visual reference
Quick reference
Routing Protocol Comparison
| Protocol | Metric | Max Hops | Algorithm | Type |
|---|---|---|---|---|
| RIP v2 | Hop count | 15 | Bellman-Ford | Distance vector |
| OSPF | Cost (bandwidth) | Unlimited | Dijkstra (SPF) | Link state |
| EIGRP | Composite metric | Unlimited | DUAL | Hybrid |
| IS-IS | Cost | Unlimited | Dijkstra | Link state |
| BGP | Policy / attributes | Unlimited | Path vector | Path vector |
RIP's 15-hop limit makes it unsuitable for large networks. OSPF and EIGRP dominate modern enterprise deployments.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 300-410 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 300-410 exam.