350-401 Infrastructure Practice Question
A network administrator is configuring a Cisco IOS router to use VRRP. The router should be the master for the virtual IP 192.168.1.1 on interface GigabitEthernet0/0. The administrator wants to ensure that if this router fails, another router takes over with minimal delay. Which command should be used to set the priority to 150?
⚠ Common exam trap
The trap here is mixing up VRRP and HSRP commands; the standby command is for HSRP, while VRRP uses the vrrp command.
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
✓
vrrp 1 priority 150
The command vrrp 1 priority 150 correctly sets the VRRP priority to 150 for group 1. A higher priority increases the chance of becoming the master. The default priority is 100, and the range is 1–254. Preemption is enabled by default, so no additional command is needed. This ensures the router becomes master and takes over quickly if needed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
vrrp 1 priority 150 preempt
Why it's wrong here
This command is invalid because the preempt keyword is not used with the priority command. In VRRP, preemption is enabled by default, and there is a separate vrrp group preempt command if you need to adjust it. The priority command only sets the priority value. The correct syntax is vrrp group priority priority-value.
- ✗
vrrp 1 preempt priority 150
Why it's wrong here
This command is not valid Cisco IOS syntax. VRRP preemption is enabled by default, and the preempt command does not take a priority argument. The correct way to set priority is with the vrrp group priority command. Adding preempt before priority would cause a syntax error.
- ✗
standby 1 priority 150
Why it's wrong here
This command configures HSRP priority, not VRRP. The scenario specifically requires VRRP. HSRP and VRRP are different protocols, and the standby command is used for HSRP. Using this command would not enable VRRP and would not meet the requirement.
- ✓
vrrp 1 priority 150
Why this is correct
The command vrrp 1 priority 150 sets the VRRP priority to 150 for group 1 on the interface. A higher priority makes the router more likely to become the master. The default priority is 100, and the range is 1–254. Priority 150 is higher than default, so this router will become master if it is the highest priority in the group. This command is entered in interface configuration mode.
Go deeper
Related to this question
Learn chapter
SDN Controllers and Cisco ACI
Key term
First Hop Redundancy Protocol
A First Hop Redundancy Protocol provides automatic backup for the default gateway router on a network so that devices keep working if the primary router fails.
Key term
HSRP vs VRRP vs GLBP
HSRP, VRRP, and GLBP are network protocols that provide high availability by allowing multiple routers to work together as a single virtual router, ensuring that if one router fails, another automatically takes over without disrupting the network.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Cisco exam blueprint
This 350-401 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 350-401 exam.