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Question 1
What does AIGP stand for in BGP best path attributes?
Correct Answer:
Attributed Inter-Gateway Protocol
Explanation:
The correct terminology for AIGP within the context of BGP (Border Gateway Protocol) is Aggregate Internal Gateway Protocol. AIGP is a path attribute used in BGP to convey information about the cost of routes learned from an IGP (Interior Gateway Protocol). It allows BGP to consider not just the usual BGP metrics but also the IGP cost associated with the route when selecting the best path. The AIGP attribute helps when redistributing routes from an IGP to BGP, making it easier for a network to manage the best paths across a hybrid environment involving both BGP and IGP routes. In scenarios where multiple paths are available, AIGP can guide the selection process based on the aggregated IGP cost. The other options, while they may contain similar terminology, do not accurately represent the meaning and function of AIGP. They do not align with the widely accepted definitions within the BGP architecture, thus making them incorrect in this context.
Question 2
What role does a Proxy Ingress Tunnel Router (PITR) serve?
Correct Answer:
It performs mapping lookups for non-LISP-capable sites
Explanation:
The Proxy Ingress Tunnel Router (PITR) serves the purpose of performing mapping lookups for non-LISP-capable sites. In the context of LISP (Locator/Identifier Separation Protocol), the PITR is essential when dealing with traffic originating from or destined for endpoints that do not support the LISP protocol. Since these non-LISP-capable sites cannot directly use the LISP architecture for routing, the PITR provides a crucial service by facilitating the mapping between endpoint identifiers (EIDs) and routing locators (RLOCs) for these sites. This functionality allows the LISP-enabled network to communicate seamlessly with endpoints that are not configured to understand the LISP mappings, ensuring that the necessary translations and lookups occur to forward traffic correctly. By handling these mapping lookups, the PITR effectively bridges the gap between LISP-enabled sites and non-LISP sites, allowing for smoother interoperability in a hybrid networking environment.
Question 3
Which OSPF area is considered the backbone area?
Correct Answer:
Area 0
Explanation:
The backbone area in OSPF (Open Shortest Path First) is always identified as Area 0. This area serves as the core of the OSPF network and is responsible for the efficient routing of information between other OSPF areas. All other areas must connect to the backbone area, making it essential for the overall structure and functioning of OSPF. Area 0 facilitates the exchange of routing information between different areas, ensuring that routers can maintain a consistent and coherent view of the network. If a router has interfaces in multiple areas, at least one of those interfaces must connect to Area 0. This design helps to reduce routing complexity and maintains the hierarchy that OSPF is built upon. Other areas, such as Area 1 and Area 2, do not have the inherent responsibilities that Area 0 does and could operate as non-backbone areas, potentially leading to fragmented routing without proper connectivity to the backbone. Thus, only Area 0 serves as the backbone area, reinforcing its crucial role in OSPF network design.
Question 4
Which of these values indicates a lower preference for a switch to be elected as the Root Bridge?
Correct Answer:
16,384
Explanation:
In the Spanning Tree Protocol (STP), the concept of bridge priority plays a crucial role in determining which switch will be elected as the Root Bridge in a network. The lower the bridge priority value, the more preferred that switch is to become the Root Bridge. A default bridge priority value is 32,768, and this is the baseline against which other values are compared. In this context, a value of 16,384 represents a lower preference compared to the default of 32,768. When evaluating the priority values, a switch with a priority of 16,384 is therefore more favorable to be elected as the Root Bridge than a switch with a higher value such as 32,768 or any other value greater than it. This is because the election process in STP chooses the switch with the lowest bridge priority value first, and in a tie, it will then use MAC addresses to break the tie. To summarize, a bridge priority of 16,384 indicates a lower preference for a switch to be elected as the Root Bridge because it is a smaller value compared to the default priority, thereby making it more likely to be chosen in the election process.
Question 5
What technology is used to enable fast transitions between basic service sets (BSS) in 802.11 protocols?
Correct Answer:
802.11r
Explanation:
The technology that facilitates fast transitions between basic service sets (BSS) in 802.11 protocols is defined by 802.11r. This protocol, also known as Fast BSS Transition (FT), is specifically designed to enhance the performance of wireless networks by allowing devices to move or roam quickly between different access points within the same network. When clients move from one access point to another, various processes, such as authentication and association, traditionally introduce delays. 802.11r minimizes these delays by enabling pre-authentication and establishing security keys in advance. This allows devices to authenticate and reconnect rapidly when they transition between BSSs, thereby significantly improving the user experience in environments with high mobility, such as in conference centers or campuses. In contrast, the other standards, while they contribute to overall wireless performance, do not have the specific design features aimed at fast BSS transitions. 802.11n, 802.11g, and 802.11ac focus on improving throughput, range, and capacity, but they do not specifically address the speed of transitioning between access points in the same way that 802.11r does.
Question 1
Exam overview

About this Exam

The Cisco Enterprise Network Core Technologies (ENCOR 350-401) certification is a cornerstone credential for networking professionals looking to validate their expertise in enterprise network core technologies. Designed for individuals with at least three to five years of experience implementing enterprise networking solutions, this exam is a key step towards achieving the prestigious CCNP Enterprise certification. It is also the core requirement for those pursuing the CCIE Enterprise Infrastructure and CCIE Enterprise Wireless certifications. This exam proves you have the knowledge and skills necessary to design, implement, and maintain advanced enterprise networks.

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Additional Information

What the Course Entails and Exam Details

This practice exam mirrors the official Cisco 350-401 ENCOR syllabus, focusing on critical domain areas. Candidates can expect a broad range of topics covering core enterprise technologies. The exam content includes: Architecture (Dual-Stack IPv4/IPv6, Virtualization), Virtualization (Hypervisors, Network Virtualization), Infrastructure (Layer 2, Layer 3, Wireless), Network Assurance (Monitoring, Diagnostics), Security (Access Control, Device Security), and Automation (REST APIs, Data Models, Orchestration). Mastery of these diverse areas confirms your ability to manage and optimize complex, modern networks.


What to Expect in the Final Exam

The final Cisco Enterprise Network Core Technologies exam (ENCOR 350-401) is a 120-minute test. While Cisco does not publish specific passing scores, which can fluctuate, the exam generally consists of between 90 and 110 questions. The format is typically multiple-choice (single and multiple answer), but it can also include complex simulation, drag-and-drop, and router/switch interaction tasks (simlets/testlets). This variety requires candidates to have both deep theoretical knowledge and practical hands-on experience. Candidates are typically prohibited from bringing reference materials or electronic devices into the testing area.


How to Study and Exam Centers

Effective preparation for the ENCOR exam requires a multi-faceted approach. First, master the official "CCNP Enterprise Core ENCOR 350-401 Official Cert Guide." Beyond reading, hands-on experience is non-negotiable. Utilize virtual labs like Cisco Modeling Labs (CML), GNS3, or physical hardware to configure, troubleshoot, and implement the scenarios described in the exam blueprint. Enroll in the formal Cisco "Implementing and Operating Cisco Enterprise Network Core Technologies (ENCOR)" course if possible. Finally, consistent practice with a reputable practice exam provider (like this one) is essential for identifying weak spots and boosting time management. This exam can be taken online via Cisco's authorized testing partner, Pearson VUE, or at their physical test centers worldwide.


Job Opportunities from the Course

Earning your CCNP Enterprise by passing the ENCOR 350-401 core exam opens doors to numerous high-level job opportunities. This certification is highly respected and directly translates to a significant career advancement. The specific job titles this certification unlocks include:

  • Network Engineer

  • Senior Network Engineer

  • Enterprise Network Administrator

  • Solutions Architect

  • Systems Engineer

  • Network Security Engineer

  • Cloud Networking Engineer

  • Wireless Network Engineer

  • Cisco Certified Specialist - Enterprise Core

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