Cisco 350-401 ENCOR Exam Practice Questions, practice question pack
CISCO · 350-401

Cisco 350-401 ENCOR Exam Practice Questions

1,066 questionsInstant PDF downloadUpdated September 2026

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Three of the 1,066 questions in this pack

Question 1

What is the difference between a RIB and a FIB?

  1. The FIB is populated based on RIB content.
  2. The RIB maintains a mirror image of the FIB.
  3. The RIB is used to make IP source prefix-based switching decisions.
  4. The FIB is where all IP routing information is stored.
Show answer and explanation

Correct answer: A. The FIB is populated based on RIB content.

The RIB (Routing Information Base) is the control plane routing table that stores all routing information learned from routing protocols. The FIB (Forwarding Information Base) is derived from the RIB and is used by the data plane for actual packet forwarding decisions. The FIB is populated based on the best routes selected from the RIB, making A the correct answer.

Why the other options are wrong

  • B. The FIB does not maintain a mirror image of the RIB; rather, the RIB contains more routing information than what appears in the FIB, which only holds the best routes.
  • C. The RIB is not used for switching decisions; the FIB performs the actual forwarding based on IP prefix lookups.
  • D. The RIB, not the FIB, is where all routing information is stored; the FIB only contains selected best routes for forwarding.

Question 2

Which QoS component alters a packet to change the way that traffic is treated in the network?

  1. policing
  2. classification
  3. marking
  4. shaping ✅Correct Answer: C, marking Marking is the QoS component that alters packets by setting fields such as DSCP, IP Precedence, or CoS to indicate how the traffic should be treated. This change is written into the packet itself so that downstream devices can classify and handle the traffic according to the marked priority.
Show answer and explanation

Answer and explanation for question 2

Question 3

Which statement about Cisco Express Forwarding is true?

  1. The CPU of a router becomes directly involved with packet-switching decisions.
  2. It uses a fast cache that is maintained in a router data plane.
  3. It maintains two tables in the data plane: the FIB and adjacency table.
  4. It makes forwarding decisions by a process that is scheduled through the IOS scheduler.
Show answer and explanation

Correct answer: C. It maintains two tables in the data plane: the FIB and adjacency table.

adjacency table. CEF operates in the data plane and maintains two key tables: the FIB (Forwarding Information Base) for IP lookups and the adjacency table for next-hop information. These tables enable fast, hardware-based forwarding decisions without CPU involvement, which is the core benefit of CEF.

Why the other options are wrong

  • A. CEF is designed to remove CPU involvement in packet switching; forwarding decisions are made in the data plane without CPU intervention.
  • B. CEF does not use a cache; it uses the FIB and adjacency tables, which are deterministic lookup structures rather than cache-based.
  • D. CEF makes forwarding decisions through distributed, hardware-based lookups in the data plane, not through IOS scheduler-based processes.

See all 10 free questions Get the full pack, US$39

1,066 practice questions for Cisco CCNP 350-401 ENCOR, with full explanations.

Every question comes with the correct answer, the reasoning behind it, and a note on why each wrong option is wrong. Work through it once with the answers, then again with the questions-only copy under exam conditions.

  • 1,066 questions, one of the largest question banks available for the 350-401 ENCOR exam
  • Answers and explanations for every question, including the wrong options
  • A questions-only PDF for timed practice runs
  • Instant delivery by email the moment you check out
  • Free monthly updates for as long as the exam is live
  • Pass or your money back

A failed ENCOR attempt costs the full US$400 again. This pack is US$39, paid once, and refunded if you fail.

Try 10 questions free before you buy.

Last updated September 2026 · 1,066 questions

What makes the ENCOR hard

The 350-401 ENCOR is one of the most demanding exams Cisco offers at this level: 120 minutes covering dual-stack architecture, virtualisation, infrastructure, network assurance, security and automation across roughly 100 questions. Three to five years of enterprise networking experience is recommended before sitting it.

The current blueprint is v1.2, which renamed the automation domain to Automation and Artificial Intelligence and folded AI-era operations content into it. Infrastructure is 30% of the exam and Security another 20%, so half the paper sits in those two domains alone. Passing it does not just earn the CCNP Enterprise: it simultaneously qualifies as the written exam requirement for both CCIE Enterprise Infrastructure and CCIE Enterprise Wireless.

1,066 practice questions for the 350-401 ENCOR, one of the largest banks available anywhere for this exam, so the question style is familiar before test day.

About the exam

The 350-401 ENCOR (Implementing Cisco Enterprise Network Core Technologies) is the core exam for CCNP Enterprise and simultaneously qualifies as the written exam requirement for CCIE Enterprise Infrastructure and CCIE Enterprise Wireless. It validates advanced knowledge across dual-stack architecture, virtualisation, enterprise infrastructure, network assurance, security, and automation. No formal prerequisites are required (CCNA is no longer mandatory before CCNP), though three to five years of enterprise networking experience is recommended. One concentration exam (US$300) is required after ENCOR to complete the full CCNP Enterprise. Current blueprint v1.2.

Exam domains (v1.2)

  • Architecture: 15%
  • Virtualisation: 10%
  • Infrastructure: 30%
  • Network assurance: 10%
  • Security: 20%
  • Automation and artificial intelligence: 15%

Approximately 100 questions, 120 minutes, passing score not publicly disclosed, US$400 per attempt, Pearson VUE testing centres or online proctored, valid for three years.

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Questions before you buy

What do I get when I buy the Cisco 350-401 ENCOR pack?

1,066 practice questions as a PDF, each with the correct answer, a full explanation and a note on why the other options are wrong, plus a separate questions-only PDF for timed practice.

How quickly do I receive it?

Straight away. The full PDF and a questions-only copy are emailed to you the moment your payment goes through, and the same links are on your order page.

Is there a free sample?

Yes. Ten questions from this pack, with answers and explanations, are free on this page and as a PDF, so you can judge the quality before you pay.

Are updates included?

Yes. The pack is updated every month for as long as the exam is live, and updates are free for everyone who has bought it.

What if I fail the exam?

We refund the pack. Sit the exam 7 to 30 days after buying, then send your official score report within 7 days of the exam date, as set out in the refund policy.

Can I share it with colleagues?

Each purchase is licensed to one person. For a team, school or training organisation, email support@certstash.com for a licence that fits.

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