This 200-301 practice question tests your understanding of ip routing. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Drag and drop the following commands into the correct order to configure OSPFv3 for IPv6 on a Cisco IOS-XE router.
This command globally enables IPv6 routing on the router, which is a prerequisite for any IPv6 routing protocol, including OSPFv3.
B
router ospfv3 1
This command creates the OSPFv3 routing process, but it must be executed after IPv6 routing is enabled globally.
C
interface GigabitEthernet0/0
This command enters interface configuration mode, but the OSPFv3 process must be created before assigning it to an interface.
D
ipv6 ospf 1 area 0
This command enables OSPFv3 on an interface, but it must be issued after entering interface configuration mode and after the OSPFv3 process is created.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
ipv6 unicast-routing
First enable IPv6 routing, then create the OSPFv3 process, then assign the process to interfaces under interface configuration mode.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
ipv6 unicast-routing
Why this is correct
This command globally enables IPv6 routing on the router, which is a prerequisite for any IPv6 routing protocol, including OSPFv3.
Related concept
Authentication checks who the user is.
✓
router ospfv3 1
Why this is correct
This command creates the OSPFv3 routing process, but it must be executed after IPv6 routing is enabled globally.
Related concept
Authentication checks who the user is.
✓
interface GigabitEthernet0/0
Why this is correct
This command enters interface configuration mode, but the OSPFv3 process must be created before assigning it to an interface.
Related concept
Authentication checks who the user is.
✓
ipv6 ospf 1 area 0
Why this is correct
This command enables OSPFv3 on an interface, but it must be issued after entering interface configuration mode and after the OSPFv3 process is created.
Related concept
Authentication checks who the user is.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A network engineer at a university connects two campus buildings via a fibre link. Both routers run OSPF, but no adjacency forms — even though both routers can ping each other. The engineer finds one router is in area 0 and the other in area 1. OSPF adjacency requires matching area numbers, hello/dead timers, and network type. IP reachability alone is not enough.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 200-301 question in full detail.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
IP Routing — This question tests IP Routing — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: ipv6 unicast-routing — First enable IPv6 routing, then create the OSPFv3 process, then assign the process to interfaces under interface configuration mode.
What should I do if I get this 200-301 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related 200-301 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
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