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Juniper JN0-352 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Layer 2 Switching and VLANs | - Native VLANs and voice VLANs - Inter-VLAN routing - Bridging components - Frame processing - Ports and VLAN tagging |
| Topic 2: Spanning Tree | - Convergence and reconvergence - STP and RSTP concepts, roles and states - Bridge Protocol Data Units (BPDUs) |
| Topic 3: High Availability | - VRRP, NSR, NSB and BFD - Link Aggregation Groups and RTG - Virtual chassis and graceful restart |
| Topic 4: BGP | - EBGP and IBGP peer interactions - Attributes and path selection - BGP basic operations and message types |
| Topic 5: Layer 2 Security | - Layer 2 firewall filters - BPDU, loop and root protection - Port security (MAC limiting, DHCP snooping, DAI, IP source guard) - MACsec and storm control |
| Topic 6: OSPF | - Link-state database and packet types - Areas and LSA types - Router ID, adjacencies and neighbors |
| Topic 7: IS-IS | - Levels, areas and metrics - Link-state database and PDUs - Adjacencies and troubleshooting |
| Topic 8: Protocol-Independent Routing | - Static, aggregate, generated routes - Load balancing and filter-based forwarding - Martian addresses and RIB groups |
| Topic 9: Tunnels | - IP tunneling concepts - GRE and IP-IP configuration and troubleshooting |
Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) Sample Questions:
1. You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.
Which statement is correct about the expected behavior?
A) Switch-2's ge-0/0/2 port role and state will transition to root and forwarding
B) Switch-2's ge-0/0/2 port role and state will remain as designated and forwarding
C) Switch-2 will remove itself from the RSTP topology
D) Switch-2 will become the root bridge for a separate RSTP topology
2. You need to apply a Layer 2 firewall filter on a Juniper Networks EX Series Switch to block traffic from the source MAC address 00:12:34:56:00:07 entering the switch on ge-0/0/3. After committing the configuration, traffic from the MAC address still passes through. Referring to the exhibit, which statement is correct in this scenario?
A) Firewall filters under family ethernet-switching cannot match on MAC addresses.
B) The MAC address and mask in the firewall filter need to be explicit.
C) The interface needs to be of type trunk for the filter to evaluate correctly.
D) The filter is applied in the wrong direction.
3. Which statement describes how Rapid Spanning Tree Protocol (RSTP) identifies an alternate port?
A) An alternate port is the upstream port that provides a backup path to the root bridge and stays in the discarding state.
B) An alternate port is the upstream port that provides the least-cost path to the root bridge.
C) An alternate port is the upstream port that forwards traffic only when the designated port is overloaded.
D) An alternate port is the upstream port that is not receiving BPDUs from the root bridge.
4. Which mechanism is used to share routes between routing tables?
A) routing instances
B) RIB groups
C) forwarding instances
D) filter-based forwarding
5. You are asked to configure a redundant trunk group (RTG). Which two requirements would accomplish this task? (Choose two.)
A) Interfaces within an RTG must be configured as trunk ports.
B) Interfaces within an RTG can be configured as access ports.
C) The RTG must be participating in a Spanning Tree topology.
D) Both interfaces of an RTG must be configured to service the same VLANS.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: B | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: A,D |








