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Juniper JN0-352 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| High Availability and Resiliency | 5-10% | - Network resiliency design and troubleshooting - Redundancy protocols and failover mechanisms - Graceful restart and non-stop routing |
| Layer 2 Security | 10-15% | - Layer 2 firewall filters and security features - DHCP snooping, Dynamic ARP Inspection and IP Source Guard - Port security, MAC limiting and storm control |
| BGP | 15-20% | - Route advertisement, attributes and path selection - Neighbor relationships and session establishment - Routing policies, filtering and common troubleshooting |
| OSPF | 15-20% | - Configuration, verification and troubleshooting - Route summarization and redistribution - Neighbor formation, area design and LSA types |
| Tunnels and Overlays | 5-10% | - Overlay network design and connectivity - GRE, IP-IP and dynamic tunnel configuration - Tunnel types, encapsulation and operation |
| Protocol Independent Routing | 10-15% | - Routing instances and route selection criteria - Routing tables, static routes and route preference - Basic routing policy and filter operation |
| Layer 2 Switching and VLANs | 15-20% | - Link Aggregation Groups (LAG) and Virtual Chassis - VLAN concepts, configuration, trunking and tagging - Spanning Tree Protocol (STP, RSTP, MSTP) operation and configuration |
| IS-IS | 10-15% | - Scalable enterprise deployment and troubleshooting - Adjacency establishment, levels and metrics - Configuration and route exchange |
| IP Multicast | 5-10% | - IGMP operation and configuration - PIM Dense Mode, Sparse Mode and RP mechanisms - Multicast routing monitoring and troubleshooting |
Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions:
You are verifying a new BGP peering session with an ISP. You issue the show bgp summary command, but the output shows the peer in the Active state. Which statement is correct in this scenario?
- A. The session is waiting to be configured.
- B. The session is established, and routing information is being exchanged.
- C. The session is actively trying to establish a TCP connection.
- D. The session is idle and disabled.
Correct Answer: C 🗳️
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Which two statements about redundant trunk groups on EX Series switches are correct? (Choose two.)
- A. If the active link fails, then the secondary link automatically takes over.
- B. Layer 2 control traffic is permitted on the secondary link.
- C. Redundant trunk groups load balance traffic across two designated uplink interfaces.
- D. Redundant trunk groups use spanning tree to provide loop-free redundant uplinks.
Correct Answer: A,B 🗳️
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You are asked to deploy nonstop active routing (NSR) on a dual-Routing Engine platform. In this scenario, what are two additional requirements for proper operation? (Choose two.)
- A. All routing neighbors must support graceful restart extensions.
- B. Graceful restart must be enabled on all neighbors.
- C. GRES must be enabled.
- D. Both Routing Engines must run the same Junos OS version.
Correct Answer: C,D 🗳️
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Two routers share the same highest priority and start time. In this situation, what is evaluated next when determining the designated router?
- A. The routers perform another DR election.
- B. The router with the lowest router ID become the DR.
- C. The router with the highest MAC address become the DR
- D. The router with the highest router ID becomes the DR
Correct Answer: D 🗳️
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Which two statements about DHCP snooping are correct? (Choose two.)
- A. By default, the Junos OS treats access ports as trusted and trunk ports as untrusted.
- B. DHCP snooping uses ARP to add statically defined IP addresses to its database.
- C. The DHCP database maps IP addresses, MAC addresses, and the associated VLAN.
- D. DHCP snooping inspects all DHCP packets on untrusted ports.
Correct Answer: C,D 🗳️
