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Juniper JN0-643 Exam Overview:
| Certification Vendor: | Juniper Networks |
|---|---|
| Exam Name: | Enterprise Routing and Switching, Professional (JNCIP-ENT) |
| Exam Number: | JN0-650 |
| Real Exam Qty: | 65 |
| Available Languages: | English |
| Exam Duration: | 90 minutes |
| Related Certifications: | JNCIS-ENT JNCIA-Junos JNCIE-ENT |
| Certificate Validity Period: | 3 years |
| Exam Format: | Multiple choice |
| Sample Questions: |  |
| Exam Way: | Onsite at Pearson VUE or online proctored |
| Pre Condition: | JNCIS-ENT certification required before taking this exam |
| Official Syllabus URL: | https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncip-ent.html |
Juniper JN0-643 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Class of Service (CoS) | - Policers and Shapers - CoS Classification and Scheduling |
| IP Telephony Features | - Voice VLAN - PoE and LLDP-MED |
| Interior Gateway Protocols (IGPs) | - OSPFv2 - OSPFv3 - Routing Policy |
| BGP | - Advanced BGP Options - Next-Hop Resolution - BGP Route Selection and Attributes |
| Ethernet Switching and Spanning Tree | - MVRP and Layer 2 Tunneling - Filter-Based VLANs - Private VLANs |
| Layer 2 Authentication and Access Control | - Captive Portal and Guest VLAN - 802.1X and MAC RADIUS |
| IP Multicast | - PIM Sparse Mode - IGMP and IGMP Snooping - Rendezvous Point Concepts |
| EVPN | - VXLAN and Multi-homing - EVPN Route Types |
Common Questions About the Juniper JN0-643 Exam
The JN0-643 exam, officially known as Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT), is the Juniper test that leads to the JNCIP certification at the Professional level. Passing it validates the skills employers expect from a certified professional. It is also associated with related credentials such as JNCIA-Junos, JNCIS-ENT, JNCIE-ENT.
The JN0-643 exam contains 65 questions, and you have 90 minutes to complete them. Work out your per-question pace before test day, and flag slow items instead of stalling on them — time pressure, not knowledge, sinks many first attempts. Timed mock exams in the Actual4Exams test engines are the most reliable way to build that rhythm.
JNCIS-ENT certification required before taking this exam
Entry requirements can change, so confirm the latest conditions on the official exam page: https://www.juniper.net/us/en/training/certification/tracks/enterprise-routing-switching/jncip-ent.html.
Yes. A free PDF demo of the Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) questions is available, so you can check the question style and answer quality before you pay. Every purchase also includes 365 days of free updates, and if the product expires you can renew the update service at a 50% discount from your member zone.
If you take the corresponding JN0-643 exam within 60 days of purchase and do not pass, you can apply for a full refund under the 100% Money Back Guarantee: submit a scan of your enrollment slip and your official Score Report (PDF) within 2 days of the exam date, and the claim is processed within 7 days. Attempts made within 3 days of purchase, downloads without an actual exam attempt, free materials, and expired orders are not eligible, and the candidate name must match the payer name. Prefer new material instead of a refund? You can exchange your purchase for two free products of equal value and keep the update service on your original product. As for delivery, the files are available for instant download and are also emailed to you within one minute of payment — if nothing arrives within 2 hours, contact customer service. There is no limit on how many computers you can install the product on.
The official Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) outline is organized into 8 domains. The first three are:
- Ethernet Switching and Spanning Tree
- Layer 2 Authentication and Access Control
- IP Multicast
See the complete exam topics section above for the full outline and the weighting of every domain.
Juniper Enterprise Routing and Switching, Professional (JNCIP-ENT) Sample Questions:
Question 1
What is an IP multicast routing protocol?
A. RSVP
B. OSPF
C. PIM
D. CDP
Question 2
A coffee shop offering free Internet service to customers wants to implement the following security policies:
1. Every customer must agree to a set of terms and conditions before accessing the
Internet.
2. Log out customers that are logged in for more than one hour.
3. Log out customers that are idle for more than 5 minutes.
4. Authenticate employee desktop computers with known hardware addresses in the office of the coffee shop to access the Internet without the above restrictions.
The following configuration has been applied to the switch:
set access radius-server 172.16.14.26 port 1812
set access radius-server 172.16.14.26 secret Am@zingC00f33
set access profile dot1x authentication-order radius
set access profile dot1x radius authentication-server 172.27.14.226
What would you add to implement these policies?
A. set protocols dot1x authenticator interface ge-0/0/12.0 supplicant multiple set protocols dot1x authenticator interface ge-0/0/12.0 mac-radius set protocols dot1x authenticator authentication-profile-name dot1x
set services captive-portal authentication-profile-name dot1x
set services captive-portal interface ge-0/0/12.0
set services captive-portal interface ge-0/0/12.0 idle-timeout 300
set services captive-portal interface ge-0/0/12.0 user-timeout 3600
set services captive-portal secure-authentication https
set services captive-portal custom-options header-message "Welcome to Our Coffee Shop" set services captive-portal custom-options banner-message "Terms and Conditions of Use"
B. set protocols dot1x authenticator interface ge-0/0/12.0 supplicant multiple set protocols dot1x authenticator interface ge-0/0/12.0 mac-radius set protocols dot1x authenticator interface ge-0/0/12.0 idle-timeout 300 set protocols dot1x authenticator interface ge-0/0/12.0 user-timeout 3600 set protocols dot1x authenticator authentication-profile-name dot1x set services captive-portal authentication-profile-name dot1x
set services captive-portal interface ge-0/0/12.0
set services captive-portal secure-authentication https
set services captive-portal custom-options header-message "Welcome to Our Coffee Shop" set services captive-portal custom-options banner-message "Terms and Conditions of Use"
C. set protocols dot1x authenticator interface ge-0/0/12.0 supplicant multiple set protocols dot1x authenticator interface ge-0/0/12.0 mac-radius set protocols dot1x authenticator authentication-profile-name dot1x
set services captive-portal authentication-profile-name dot1x
set services captive-portal interface ge-0/0/12.0
set services captive-portal secure-authentication https
set services captive-portal custom-options header-message "Welcome to Our Coffee Shop" set services captive-portal custom-options banner-message "Terms and Conditions of Use"
D. set protocols dot1x authenticator interface ge-0/0/12.0 supplicant multiple set protocols dot1x authenticator authentication-profile-name dot1x set services captive-portal authentication-profile-name dot1x
set services captive-portal interface ge-0/0/12.0
set services captive-portal secure-authentication https
set services captive-portal custom-options header-message "Welcome to Our Coffee Shop" set services captive-portal custom-options banner-message "Terms and Conditions of Use"
Question 3
-- Exhibit -
-- Exhibit --
Click the Exhibit button.
AS4 is using the default path to get to AS1. This path is not modified by any of the ASs shown in the exhibit. AS1 wants to influence this path so that traffic from AS4 comes through AS3.
Where do you apply the policy shown in the exhibit?
A. AS1
B. AS3
C. AS2
D. AS4
Question 4
A medium-sized enterprise has some devices that are 802.1X capable and some that are not. Any device that fails authentication must be provided limited access through a VLAN called NONAUTH.
How do you provide this access?
A. Configure NONAUTH VLAN as the server-reject VLAN.
B. Configure NONAUTH VLAN as the guest VLAN and the server-reject VLAN.
C. Configure NONAUTH VLAN as the guest VLAN.
D. Configure a separate VLAN for each type of user: 802.1X and non-802.1X.
Question 5
-- Exhibit --
{master:0}[edit]
user@switch# show protocols vstp
vlan 100;
{master:0}[edit]
user@switch# run show spanning-tree bridge
STP bridge parameters
Context ID : 1
Enabled protocol : RSTP
STP bridge parameters for VLAN 100
Root ID : 32868.50:c5:8d:ae:94:80
Hello time : 2 seconds
Maximum age : 20 seconds
Forward delay : 15 seconds
Message age : 0
Number of topology changes : 0
Local parameters
Bridge ID : 32868.50:c5:8d:ae:94:80
Extended system ID : 1
Internal instance ID : 0
{master:0}[edit]
user@switch# run show spanning-tree interface
{master:0}[edit]
user@switch#
-- Exhibit --
Click the Exhibit button.
Based on the output shown in the exhibit, why is VSTP not working for VLAN 100?
A. Your MSTI is misconfigured.
B. RSTP is configured in addition to VSTP.
C. No interfaces are assigned to VLAN 100.
D. No native VLAN is configured.
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: A | Question 4 Answer: B | Question 5 Answer: C |
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