The third format of Exam4Labs product is the desktop Juniper JN0-352 practice exam software. You can access the Enterprise Routing and Switching, Specialist (JNCIS-ENT) (JN0-352) practice exam after installing this software on your Windows computer or laptop. Specifications we have discussed in the paragraph of the web-based version are available in desktop JN0-352 Practice Exam software.
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: IP Multicast | 5-10% | - PIM Dense Mode, Sparse Mode and RP mechanisms - Multicast routing monitoring and troubleshooting - IGMP operation and configuration |
| Topic 2: Layer 2 Security | 10-15% | - DHCP snooping, Dynamic ARP Inspection and IP Source Guard - Layer 2 firewall filters and security features - Port security, MAC limiting and storm control |
| Topic 3: BGP | 15-20% | - Route advertisement, attributes and path selection - Neighbor relationships and session establishment - Routing policies, filtering and common troubleshooting |
| Topic 4: Protocol Independent Routing | 10-15% | - Routing tables, static routes and route preference - Basic routing policy and filter operation - Routing instances and route selection criteria |
| Topic 5: High Availability and Resiliency | 5-10% | - Network resiliency design and troubleshooting - Graceful restart and non-stop routing - Redundancy protocols and failover mechanisms |
| Topic 6: OSPF | 15-20% | - Route summarization and redistribution - Configuration, verification and troubleshooting - Neighbor formation, area design and LSA types |
| Topic 7: Tunnels and Overlays | 5-10% | - Tunnel types, encapsulation and operation - Overlay network design and connectivity - GRE, IP-IP and dynamic tunnel configuration |
| Topic 8: IS-IS | 10-15% | - Configuration and route exchange - Adjacency establishment, levels and metrics - Scalable enterprise deployment and troubleshooting |
| Topic 9: Layer 2 Switching and VLANs | 15-20% | - Spanning Tree Protocol (STP, RSTP, MSTP) operation and configuration - VLAN concepts, configuration, trunking and tagging - Link Aggregation Groups (LAG) and Virtual Chassis |
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NEW QUESTION # 113
Which statement about configuring persistent MAC learning is correct?
Answer: B
NEW QUESTION # 114
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.)
Answer: B,C
Explanation:
The two reasons for the failure to form an adjacency in a network running IS-IS could be:
B) There is no configured ISO address on any IS-IS interface. IS-IS requires each router interface to have an ISO address configured. Without this address, the routers cannot form an adjacency.
D) The family iso configuration is missing from the adjacency interface. The 'family iso' configuration is essential for IS-IS to function correctly. If this configuration is missing from the adjacency interface, it could prevent the formation of an adjacency.
These explanations are based on the Enterprise Routing and Switching Specialist (JNCIS-ENT) documents and learning resources available at Juniper Networks.
NEW QUESTION # 115
What are two characteristics of IS-IS? (Choose two.)
Answer: B,D
Explanation:
IS-IS (Intermediate System to Intermediate System) was designed by ISO as a link-state Interior Gateway Protocol for routing within a single autonomous system, functioning on a hierarchical two-level model conceptually similar to OSPF's areas, which makes the first statement unambiguously correct. Within that hierarchy, Level 1 routers maintain detailed topology information only for their own local area and use a default route toward the nearest Level 2 or Level 1/Level 2 router to reach destinations outside the area; they explicitly do not carry inter-area topology information and therefore cannot route traffic between areas on their own. Routers that participate in both levels simultaneously - Level 1/Level 2 (L1/L2) routers - sit at the area boundary, maintaining a Level 1 database for their local area and a Level 2 database for the backbone, and it is specifically these dual-level routers that stitch inter-area traffic together, forwarding packets from the local area into the Level 2 backbone and vice versa, which confirms the second correct statement. Regarding route preference, Junos assigns distinct default preference (administrative distance) values of 15 for IS-IS Level 1 routes and 18 for IS-IS Level 2 routes - neither of which is 20 - so the preference-value statement is factually incorrect and included as a distractor testing precise knowledge of Junos default protocol preferences. Reference topics: Junos Enterprise Routing - IS-IS, Level 1, Level 2, and L1/L2 Router Roles; Default Route Preference Values.
NEW QUESTION # 116
Referring to the output shown in the exhibit, which statement is correct?
Answer: C
Explanation:
In OSPF, the state of the neighbor relationship is determined by the exchange of OSPF packets between routers. The state "2Way" as shown in the exhibit indicates that bi-directional communication has been established between the two OSPF routers. This is the normal state for a neighbor that is not the Designated Router (DR) or Backup Designated Router (BDR) on a broadcast, non-broadcast multi-access (NBMA), or point-to-multipoint network. These neighbors are often referred to as "DRothers". Therefore, option B is correct.
NEW QUESTION # 117
Which statement describes how a generated route determines its next hop?
Answer: C
Explanation:
A generate route is a specialized type of Junos summary route that, unlike an aggregate route, is permitted to inherit and use an actual forwarding next hop rather than being restricted to reject or discard. When multiple contributing routes exist beneath the summarized prefix, Junos selects one of them as the primary contributor using a deterministic process: it first evaluates route preference (choosing the contributor with the lowest, most preferred value), then breaks any remaining tie by preferring the contributing route with the numerically lowest metric, and continues through further tie-breaking criteria if necessary until a single primary contributor is identified. The generate route then adopts the next hop of that specific primary contributor as its own forwarding next hop, meaning traffic matching the generate route but not matching any individual contributing route is forwarded toward whichever real next hop the primary (best) contributing route currently uses. This behavior is fundamentally different from an aggregate route, which never adopts a forwarding next hop at all and instead installs with a reject (or optionally discard) next hop by default, deliberately preventing traffic from being forwarded toward a next hop that might not actually lead to the intended more-specific destination. There is no mechanism by which the next hop is chosen arbitrarily from the 'first' or 'least-specific' contributor, and while a next hop can be manually overridden under the generate route's own configuration, that is not the default resolution behavior being described here.
NEW QUESTION # 118
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