Question 710 of 2,015
VRF and Path IsolationmediumDrag & DropObjective-mapped

Quick Answer

The correct order for VRF selection with policy-based routing steps is: create an extended access-list to match traffic, define a route-map with a match ip clause and the set vrf command, apply the route-map to the incoming interface, then the router evaluates the policy on received packets, and finally forwards the matched traffic into the specified VRF. This sequence is correct because policy-based routing (PBR) overrides the standard routing table lookup by first classifying traffic using an access-list, then using a route-map to dictate the next action—in this case, selecting a specific VRF for forwarding rather than a next-hop IP. On the ENCOR 350-401 exam, this drag-and-drop task tests your understanding of how PBR interacts with VRF-aware routing, often appearing as a scenario where you must isolate customer traffic into separate routing tables. A common trap is confusing the order of the route-map definition versus its application; remember that you must define the policy before you can apply it to an interface. A helpful memory tip is “Match first, set second, apply third”—the access-list matches, the route-map sets the VRF, and the interface applies the policy.

350-401 VRF and Path Isolation Practice Question

This 350-401 practice question tests your understanding of vrf and path isolation. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 steps of VRF selection using policy-based routing into the correct order, from first to last.

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "first"

    Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

Question 1mediumdrag order
Read the full VRF explanation →

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

Create extended ACL to match traffic

The correct order begins with creating an extended access-list to match traffic, defining a route-map with a match clause and set vrf command, applying the route-map to the incoming interface, the router evaluating the policy on received packets, and finally forwarding the matched traffic into the specified VRF.

Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Common exam traps

Common exam trap: ACLs stop at the first match

ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.

Detailed technical explanation

How to think about this question

ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.

KKey Concepts to Remember

  • Standard ACLs match source addresses.
  • Extended ACLs can match source, destination, protocol and ports.
  • The first matching ACL entry is used.
  • There is usually an implicit deny at the end.

TExam Day Tips

  • Check inbound versus outbound direction.
  • Read the ACL from top to bottom.
  • Look for a broader permit or deny above the intended line.

Key takeaway

ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.

Real-world example

How this comes up in practice

A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.

What to study next

Got this wrong? Here's your next step.

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-401 ACL questions on filtering logic and placement.

Related practice questions

Related 350-401 practice-question pages

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FAQ

Questions learners often ask

What does this 350-401 question test?

VRF and Path Isolation — This question tests VRF and Path Isolation — Standard ACLs match source addresses..

What is the correct answer to this question?

The correct answer is: Create extended ACL to match traffic — The correct order begins with creating an extended access-list to match traffic, defining a route-map with a match clause and set vrf command, applying the route-map to the incoming interface, the router evaluating the policy on received packets, and finally forwarding the matched traffic into the specified VRF.

What should I do if I get this 350-401 question wrong?

Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related 350-401 ACL questions on filtering logic and placement.

Are there clue words in this question I should notice?

Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Standard ACLs match source addresses.

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Same concept, more angles

1 more ways this is tested on 350-401

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. Drag and drop the steps of VRF selection using policy-based routing into the correct order, from first to last.

medium
  • A.Create route map with match clause
  • B.Set VRF using set vrf command in route map
  • C.Apply route map to incoming interface
  • D.Router matches traffic based on access list
  • E.Packet is forwarded into the specified VRF

Why A: The correct order starts with creating a route map with a match clause, then setting the VRF using the set vrf command, applying the route map to the incoming interface with ip policy route-map, the router matching the traffic, and finally forwarding the packet to the specified VRF.

Last reviewed: Jun 18, 2026

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