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Juniper JN0-352 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Layer 2 Switching and VLANs | - Inter-VLAN routing - Ports and VLAN tagging - Native VLANs and voice VLANs - Frame processing - Bridging components |
| Topic 2: Layer 2 Security | - BPDU, loop and root protection - Layer 2 firewall filters - Port security (MAC limiting, DHCP snooping, DAI, IP source guard) - MACsec and storm control |
| Topic 3: Protocol-Independent Routing | - Martian addresses and RIB groups - Static, aggregate, generated routes - Load balancing and filter-based forwarding |
| Topic 4: High Availability | - Link Aggregation Groups and RTG - VRRP, NSR, NSB and BFD - Virtual chassis and graceful restart |
| Topic 5: Spanning Tree | - STP and RSTP concepts, roles and states - Convergence and reconvergence - Bridge Protocol Data Units (BPDUs) |
| Topic 6: OSPF | - Link-state database and packet types - Areas and LSA types - Router ID, adjacencies and neighbors |
| Topic 7: BGP | - EBGP and IBGP peer interactions - Attributes and path selection - BGP basic operations and message types |
| Topic 8: IS-IS | - Link-state database and PDUs - Adjacencies and troubleshooting - Levels, areas and metrics |
| Topic 9: Tunnels | - GRE and IP-IP configuration and troubleshooting - IP tunneling concepts |
Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions:
1. What are two characteristics of RSTP alternate ports? (Choose two.)
A) RSTP alternate ports provide an alternate lower cost path to the root bridge.
B) RSTP alternate ports provide an alternate higher cost path to the root bridge.
C) RSTP alternate ports block traffic while receiving superior BPDUs from a neighboring switch.
D) RSTP alternate ports are active ports used to forward frames toward the root bridge.
2. You are an operator for a network running IS-IS. Two routers are failing to form an adjacency.
What are two reasons for this problem? (Choose two.)
A) There are mismatched router IDs on the L2 routers.
B) There is a mismatched area ID between the L2 routers.
C) There is no configured ISO address on any IS-IS interface.
D) The family iso configuration is missing from the adjacency interface.
3. You want to ensure traffic is routed through a GRE tunnel. In this scenario, which two statements will satisfy this requirement? (Choose two.)
A) Keepalives must be used on stateless tunneling protocols.
B) All intermediary devices must have a route to the tunnel endpoints.
C) Tunnel endpoints must have a route that directs traffic into the tunnel.
D) BFD must be used on the stateless tunneling protocols.
4. You are asked to create a default route that will be advertised to your internal OSPF neighbors.
You have three upstream connections to the Internet and you must ensure that when available, all traffic uses ISP1 as your primary connection and only uses ISP2 and ISP3 when ISP1 is not available. Which solution should you implement in this scenario?
A) Create a default aggregated route.
B) Create a default static route with ISP1's address as the next hop while specifying the addresses for ISP2 and ISP3 as qualified next hops with a preference value of six or higher.
C) Create a default generate route that includes an import policy to match BGP routes from ISP1 and assign a preference value of four or less.
D) Create a default static route with each neighbor address as the next hop.
5. An update to your organization's network security requirements document requires management traffic to be isolated in a non-default routing-instance. You want to implement this requirement on your Junos-based devices.
Which two commands enable this behavior? (Choose two.)
A) set routing--instances mgmtjunoa interface ge-0/0/0.0
B) set routing--instances mgmt_junos
C) set system management--instance
D) set routing--instances mgmt_junos interface em1
Solutions:
| Question # 1 Answer: B,C | Question # 2 Answer: C,D | Question # 3 Answer: B,C | Question # 4 Answer: B | Question # 5 Answer: B,C |



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