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Juniper JN0-352 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Protocol-Independent Routing | - Load balancing and filter-based forwarding - Martian addresses and RIB groups - Static, aggregate, generated routes |
| Spanning Tree | - STP and RSTP concepts, roles and states - Bridge Protocol Data Units (BPDUs) - Convergence and reconvergence |
| BGP | - EBGP and IBGP peer interactions - BGP basic operations and message types - Attributes and path selection |
| Layer 2 Switching and VLANs | - Ports and VLAN tagging - Bridging components - Inter-VLAN routing - Frame processing - Native VLANs and voice VLANs |
| Tunnels | - GRE and IP-IP configuration and troubleshooting - IP tunneling concepts |
| High Availability | - Link Aggregation Groups and RTG - VRRP, NSR, NSB and BFD - Virtual chassis and graceful restart |
| OSPF | - Link-state database and packet types - Router ID, adjacencies and neighbors - Areas and LSA types |
| Layer 2 Security | - Layer 2 firewall filters - Port security (MAC limiting, DHCP snooping, DAI, IP source guard) - BPDU, loop and root protection - MACsec and storm control |
| IS-IS | - Adjacencies and troubleshooting - Link-state database and PDUs - Levels, areas and metrics |
Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions:
1. You need to configure a LAG between your switches. In this scenario, which two statements are correct? (Choose two.)
A) Duplex and speed settings are not required to match on both participating devices.
B) Duplex and speed settings are required to match on both participating devices.
C) Member links are not required to be contiguous ports.
D) Member links are required to be contiguous ports.
2. A switch uses the factory-default storm control configuration. A sudden unknown-unicast burst causes packet loss for only 4-5 seconds before stabilizing. Which statement describes why normal operation resumes automatically?
A) Storm control drops only excess packets until traffic falls below the threshold.
B) Storm control triggers GRES recovery.
C) Storm control shuts down the interface and re-enables it after 5 seconds.
D) Storm control applies only to multicast traffic by default.
3. Which two statements about redundant trunk groups on EX Series switches are correct? (Choose two.)
A) Layer 2 control traffic is permitted on the secondary link
B) Redundant trunk groups must be connected to the same aggregation switch.
C) If the active link fails, then the secondary link automatically takes over.
D) Redundant trunk groups load-balance traffic across two designated uplink interfaces.
4. In RSTP, which three port roles are associated with the discarding state? (Choose three.)
A) root
B) designated
C) backup
D) alternate
E) disabled
5. On Juniper devices, which statement correctly describes a basic characteristic of a GRE tunnel?
A) GRE tunnels maintain session state information about the remote endpoint.
B) GRE tunnels need keepalives configured by default to stay operational.
C) GRE tunnels require the tunnel endpoints to have a valid route to each other.
D) GRE tunnels support only IPv4 payload encapsulation.
Solutions:
| Question # 1 Answer: B,C | Question # 2 Answer: A | Question # 3 Answer: A,C | Question # 4 Answer: C,D,E | Question # 5 Answer: C |
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