About This Domain
Domain 4 — Infrastructure Services — accounts for 25% of the ENARSI certification exam. This domain evaluates your understanding of dhcpv4 and dhcpv6 configuration and troubleshooting, ntp authentication and stratum hierarchy, snmp v2c/v3 configuration, and related concepts. DHCP, DNS, NTP, SNMP, syslog, IP SLA, first-hop redundancy, and NetFlow. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.
What You'll Be Tested On
- DHCPv4 and DHCPv6 configuration and troubleshooting
- NTP authentication and stratum hierarchy
- SNMP v2c/v3 configuration
- IP SLA operations for SLA monitoring
- HSRP, VRRP, GLBP advanced configuration
Key Cisco Technologies in This Domain
Study Strategy for Domain 4
This domain represents 25% of the total exam, making it a significant scoring area. Balance theoretical study with hands-on practice. Use practice quizzes to identify weak spots and review the topics where you score below 75%.
Exam Tips for Domain 4
Know IPv6 first-hop security: RA guard, DHCPv6 guard, ND inspection.
Frequently Asked Questions
How many questions on the ENARSI exam come from Domain 4?
Domain 4 (Infrastructure Services) makes up 25% of the ENARSI exam. The exam has 65 scored questions, so approximately 16 questions will come from this domain.
What services should I focus on for Domain 4?
The key services for this domain include Infrastructure Services. Make sure you understand how each service works, its use cases, and how they integrate with one another.
How should I prepare for Infrastructure Services questions?
Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts.
What's the best order to study the ENARSI domains?
Many candidates start with the highest-weighted domains first. For the ENARSI exam, the domains in order of weight are: Layer 3 Technologies (35%), VPN Technologies (20%), Infrastructure Security (20%), Infrastructure Services (25%).
Practice Domain 4 Questions
Test your knowledge of Infrastructure Services with practice questions from our ENARSI question bank.
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