Question 1mediummultiple choice
Full question →R1 has the following static route configured:
What does this route accomplish?
mediummultiple choiceObjective-mapped
Exhibit
ip route 0.0.0.0 0.0.0.0 203.0.113.1
R1 has the following static route configured:
What does this route accomplish?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
It blocks unknown destinations from leaving the router.
This is wrong because the command provides a forwarding path; it does not block unknown traffic.
B
Distractor review
It creates a host route to 203.0.113.1 only.
This is wrong because a host route would normally use a /32 mask and point to one exact destination address.
C
Distractor review
It advertises all connected routes into OSPF.
This is wrong because static-route configuration by itself does not advertise connected routes into OSPF.
D
Best answer
It creates a default route used when no more specific route exists.
This is correct because `0.0.0.0 0.0.0.0` defines a default route.
Common exam trap
Common exam trap: answer the scenario, not the keyword
A frequent exam trap is mistaking the static default route for a host route or believing it blocks unknown destinations. Some candidates incorrectly assume that the command creates a route to a single IP address or that it prevents traffic from leaving the router. Another common mistake is thinking static routes automatically advertise connected networks into OSPF. In reality, the default route matches all destinations not explicitly known and forwards them to the specified next hop, rather than blocking or limiting traffic. Understanding this distinction is critical to selecting the correct answer.
Technical deep dive
How to think about this question
A static default route is a manually configured route that matches all IPv4 addresses not found in the routing table. It is defined by the destination network 0.0.0.0 with a subnet mask of 0.0.0.0, which effectively covers every possible IPv4 address. This route tells the router where to send packets when it has no more specific route for the destination. The next-hop IP address in the command points to the upstream router or gateway that can handle unknown traffic, typically an ISP or core router. When a router receives a packet, it performs a longest prefix match lookup in its routing table. If no specific route matches the destination IP, the router uses the default route if configured. This behavior ensures that traffic destined for unknown networks is forwarded rather than dropped. Static default routes are simple and efficient for small or stub networks that rely on a single upstream path. Unlike dynamic routing protocols such as OSPF, static routes do not advertise themselves or connected routes unless explicitly redistributed. A common exam trap is confusing a static default route with a host route or assuming it blocks unknown traffic. The static default route does not block traffic; it provides a forwarding path for all unmatched destinations. Another confusion is thinking static routes automatically advertise connected routes into OSPF, which they do not. Practically, default routes simplify routing in edge routers by funneling unknown traffic to a known next hop, reducing routing table complexity and improving forwarding efficiency.
KKey Concepts to Remember
- A static default route uses the destination network 0.0.0.0 with a subnet mask of 0.0.0.0 to match all IPv4 addresses not explicitly listed in the routing table.
- Routers use the default route as a last resort path when no more specific route exists for a destination IP address.
- The next-hop IP address in a static default route points to an upstream router or gateway that can forward traffic toward unknown destinations.
- Static routes do not automatically advertise connected or static routes into dynamic routing protocols like OSPF without additional configuration.
- A host route specifies a single IP address with a /32 mask and differs from a default route, which covers all unmatched destinations.
- Static routes provide explicit control over routing decisions and have an administrative distance of 1 by default, making them preferred over many dynamic routes.
- The 0.0.0.0/0 prefix is the broadest possible IPv4 route and is commonly used to direct traffic toward an ISP or default gateway.
- Routers forward packets based on the longest prefix match, so a default route is only used when no other route matches the destination IP.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A router learns the same prefix from both OSPF and EIGRP. Which route is installed by default?
Question 2
A router shows this output: R1#show ip ospf neighbor Neighbor ID Pri State Dead Time Address Interface 10.1.1.2 1 FULL/DR 00:00:34 192.168.12.2 GigabitEthernet0/0 10.1.1.3 1 2WAY/DROTHER 00:00:39 192.168.12.3 GigabitEthernet0/0 Which statement is correct?
Question 3
What is the OSPF metric called?
Question 4
A non-root switch has two uplinks toward the root bridge. One path has a lower total STP cost than the other. What role will the lower-cost uplink have?
Question 5
A router interface applies this ACL inbound: 10 deny tcp any any eq 80 20 permit ip any any A user reports that web browsing to a server by IP address fails, but ping works. Which statement best explains the behavior?
Question 6
A router learns route 198.51.100.0/24 from OSPF with AD 110 and also has a static route to the same prefix configured with AD 150. Which route is installed?
FAQ
Questions learners often ask
What does this 200-301 question test?
A static default route uses the destination network 0.0.0.0 with a subnet mask of 0.0.0.0 to match all IPv4 addresses not explicitly listed in the routing table.
What is the correct answer to this question?
The correct answer is: It creates a default route used when no more specific route exists. — This command creates a default static route. In everyday terms, it tells the router, “If you do not know a more specific way to reach a destination, send the traffic to 203.0.113.1.” That next-hop address usually points toward an upstream router or ISP edge. The command does not describe one specific remote network; it represents every destination not otherwise matched by a more specific entry. At the routing-table level, `0.0.0.0 0.0.0.0` is the broadest possible IPv4 prefix. Because it matches everything, it is used only when nothing more specific exists.
What should I do if I get this 200-301 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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