JN0-1362 Sample Questions & Answers
Free JNCDS-SP practice questions with worked answers and explanations. See how the ExamJungle simulator prepares you — then jump into the full test.
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- Question 1Beginner
Network Availability and Traffic Prioritization · CoS Design
You are designing a Class of Service (CoS) policy for a Service Provider edge router. You need to classify customer traffic based on the DSCP value in the IP header as it enters the interface. Which type of classifier is most appropriate for this task?
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Correct answer: B
BA classifiers examine the CoS value in the packet header (such as DSCP for IP, EXP for MPLS, or 802.1p for Ethernet) to determine the forwarding class and loss priority. This is the standard method for trusting and mapping existing markings.
- Question 2Advanced
Data Center WAN Design · EVPN
In a Data Center Interconnect (DCI) design, you are using EVPN-MPLS to extend Layer 2 connectivity between two sites. Which BGP route type is primarily responsible for advertising MAC address reachability between the PE routers?
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Correct answer: D
Type 2 routes in EVPN are used to advertise MAC addresses (and optionally IP addresses) of hosts. This allows the PE routers to learn which MAC addresses are reachable via which remote PE, enabling the control-plane learning that distinguishes EVPN from VPLS.
- Question 3Beginner
WAN Security · BGP Flowspec
True or False: BGP Flowspec allows a Service Provider to distribute traffic filtering rules, such as dropping packets from a specific source IP, directly to the routing control plane of edge routers.
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Correct answer: A
True. BGP Flowspec (RFC 5575) extends BGP to carry flow specification rules (filters) that can match on packet headers (src/dst IP, port, protocol) and apply actions like discard, rate-limit, or redirect, effectively turning routers into distributed firewalls for DDoS mitigation.
- Question 4Intermediate
WAN Security · Layer 2 Security
A financial institution requires a WAN connection that guarantees that their traffic is completely encrypted at Layer 2 before it leaves their premise equipment. They also require line-rate performance without the overhead of IPsec fragmentation. Which technology should you recommend?
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Correct answer: A
MACsec provides encryption at Layer 2 (Ethernet frame payload) on a hop-by-hop basis. It offers line-rate encryption with minimal overhead compared to IPsec and hides upper-layer protocols, meeting the requirement for L2 encryption without IPsec overhead.
- Question 5Beginner
WAN Management · OOB Management
You are designing a management network for a large Service Provider WAN. You decide to implement an Out-of-Band (OOB) management network. What is the primary architectural benefit of this approach compared to In-Band management?
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Correct answer: C
The primary benefit of OOB management is the separation of management traffic from user traffic. If the production network faces a DDoS attack, congestion, or routing loop, the OOB network remains accessible, allowing administrators to remediate the issue.
- Question 6Intermediate
SDN in the WAN · SDN Controllers
Which Juniper Networks SDN controller solution is designed to optimize IP/MPLS paths using PCEP (Path Computation Element Protocol) based on global network view and constraints?
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Correct answer: B
NorthStar Controller (rebranded/evolved into Paragon Pathfinder) is Juniper's WAN SDN controller that uses PCEP to compute and provision traffic-engineered paths across the network based on real-time topology and bandwidth data.
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