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| Section | Weight | Objectives |
|---|---|---|
| High Availability and Resiliency | 5-10% | - Graceful restart and non-stop routing - Network resiliency design and troubleshooting - Redundancy protocols and failover mechanisms |
| IP Multicast | 5-10% | - PIM Dense Mode, Sparse Mode and RP mechanisms - IGMP operation and configuration - Multicast routing monitoring and troubleshooting |
| Protocol Independent Routing | 10-15% | - Routing tables, static routes and route preference - Routing instances and route selection criteria - Basic routing policy and filter operation |
| BGP | 15-20% | - Route advertisement, attributes and path selection - Routing policies, filtering and common troubleshooting - Neighbor relationships and session establishment |
| IS-IS | 10-15% | - Scalable enterprise deployment and troubleshooting - Adjacency establishment, levels and metrics - Configuration and route exchange |
| Layer 2 Switching and VLANs | 15-20% | - VLAN concepts, configuration, trunking and tagging - Spanning Tree Protocol (STP, RSTP, MSTP) operation and configuration - Link Aggregation Groups (LAG) and Virtual Chassis |
| 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 |
| 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 |
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NEW QUESTION # 162
You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of
192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same time and all other OSPF settings are the default settings.
Which statement is correct in this scenario?
Answer: A
Explanation:
The router with the highest OSPF priority becomes the DR. In this case, R2 has a higher priority (64) compared to R1's priority (32). Hence, R2 will become the DR.
The router with the next highest priority becomes the BDR. Since R1 has the next highest priority after R2, R1 will become the BDR.
NEW QUESTION # 163
When trying to commit the configuration shown in the exhibit, you receive an error.
What is the problem?
Answer: D
NEW QUESTION # 164
Refer to Exhibit:
Click the Exhibit button.
Which two statements about the output shown in the exhibit are correct? (Choose two.)
Answer: B,D
Explanation:
The L column in this output identifies which IS-IS levels are active on each interface, using the standard bitmask where 1 represents Level 1 only and 3 represents both Level 1 and Level 2 combined. Interface ge-0/0
/2.0 shows an L value of 1 and its Level 2 DR field explicitly reads Disabled, meaning Level 2 has not been enabled on that circuit at all; consequently no Level 2 adjacency can ever form there, regardless of what the neighboring router advertises, which confirms that statement as correct. The lo0.0 loopback interface shows Passive under both the Level 1 DR and Level 2 DR columns. A passive IS-IS interface is deliberately excluded from adjacency formation - no IIH PDUs are sent or expected on it - but its associated prefix is still injected into the router's own LSP and flooded throughout the area, which is precisely why loopbacks are configured as passive: to guarantee the router ID/loopback prefix is reachable network-wide without wasting adjacency overhead on an interface with no real neighbor. This confirms that R3 advertises its loopback address, while ruling out the claim that the loopback is used to form an adjacency. Regarding designated routers, all circuits shown here report 'Point to Point' rather than an actual DR system ID, because DR election in IS-IS is a construct exclusive to broadcast (LAN) circuits; point-to-point circuits never elect a DR, so the first statement is false. Reference topics: Junos Enterprise Routing - IS-IS, Interface Levels and Passive Interfaces.
NEW QUESTION # 165
Referring to the exhibit, which statement is correct?
Answer: A
Explanation:
The "Root ID" shows 4096.00:19:e2:55:36:1e. The first part of this ID, 4096, is the bridge priority of the root bridge.
The local bridge ID is shown as 32768.00:19:e2:55:1d:30, indicating that the local device has a default bridge priority of 32768, which is higher (and thus less preferred) than 4096.
Thus, the root bridge has a priority of 4096, and the local device is not the root bridge. The local device is participating in the RSTP topology and has identified another bridge as the root.
NEW QUESTION # 166
You have configured OSPF routing as shown in the exhibit. You notice that all interfaces have formed full adjacencies, with the exception of the interfaces connecting R3 and R4 with a status of 2Way.
What is the reason for this status?
Answer: D
NEW QUESTION # 167
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