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| Section | Weight | Objectives |
|---|---|---|
| IP Multicast | 15% | - ASM / SSM models, RPF mechanism - Multicast routing policy & scoping - IGMP, PIM-SM, RP, Anycast RP, MSDP |
| Access Control & IP Telephony | 5% | - 802.1X, MAC RADIUS, captive portal - PoE, LLDP-MED, voice VLAN |
| Advanced Ethernet Switching & Spanning Tree | 20% | - Layer 2 tunneling: Q-in-Q, L2PT - MSTP, VSTP, RSTP configuration & tuning - Filter-based VLANs, private VLANs, MVRP |
| Border Gateway Protocol (BGP) | 20% | - IPv4/IPv6 address families, policy implementation - Route selection, next-hop handling, attributes - Communities, extended communities, load balancing |
| Class of Service (CoS) | 10% | - Policers, schedulers, drop profiles, shaping - Classification, marking, forwarding classes - Rewrite rules, congestion management |
| EVPN & Data Center Interconnect | 10% | - Multi-homing, redundancy, integration - EVPN route types, VXLAN encapsulation |
| Interior Gateway Protocols (IGPs) | 20% | - IS-IS: operation, routing policy, route filtering - OSPFv2 / OSPFv3: design, configuration, troubleshooting - Route preference, redistribution, summarization |
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NEW QUESTION # 12
Which BGP message type contains NLRI information?
Answer: C
NEW QUESTION # 13
Which step comes first in the BGP route selection process after next-hop reachability is verified?
Answer: B
NEW QUESTION # 14
Click the Exhibit button.
You are troubleshooting suboptimal routing in an enterprise OSPFv2 deployment:
-- R1 is an ABR between Area 0 and Area 1.
-- R2 is an ABR between Area 0 and Area 2.
-- R3 in Area 1 advertises a network that should be reachable by routers in Area 2.
-- The ABRs are connected in the backbone (Area 0).
On router R2, the show ospf database does not display router LSAs or network LSAs from Area 1, but an interarea route to R3's network exists in the routing table. R2 does not have Type-1 or Type-2 LSAs from Area 1 in its OSPF database.
Referring to the exhibit, which statement is correct?
Answer: D
Explanation:
The behavior described is the fundamental operational principle of OSPF ' s hierarchical area structure.
* LSA Flooding Scope: In OSPFv2, Type-1 (Router) and Type-2 (Network) Link-State Advertisements (LSAs) are restricted to a local area flooding scope . They contain detailed topology information (such as which routers are connected to which links) that is only relevant for calculating the Shortest Path First (SPF) tree within that specific area.
* ABR Functionality: Area Border Routers (ABRs), such as R1 in this scenario, act as the gateway between areas. The ABR does not forward Type-1 or Type-2 LSAs from one area to another. Instead, it extracts the prefix information (the network address and mask) from those LSAs and generates a Type-
3 (Summary) LSA .
* Interarea Reachability: This Type-3 LSA is then flooded into the backbone (Area 0) and subsequently into other non-backbone areas, such as Area 2. This explains why R2 sees an " interarea route " to R3's network in its routing table and has the corresponding Type-3 LSA in its database, but cannot see the original Type-1 or Type-2 LSAs from Area 1.
* Why other options are incorrect: Option A is incorrect because this is standard protocol behavior, not the result of a manual filter. Option B is incorrect as there is no such " disable " feature; the protocol design inherently prevents these LSAs from crossing boundaries. Option C is incorrect because OSPFv3 still uses Type-1 and Type-2 LSAs (renamed but functionally similar for topology), and the prompt specifically identifies the deployment as OSPFv2 .
NEW QUESTION # 15
Exhibit
Referring to the exhibit, which two statements are correct? (Choose two.)
Answer: A,B
Explanation:
The exhibit shows the Class of Service (CoS) transmit queue information for interface ge-0/0/11. To determine the correct behavior, we must analyze the bandwidth allocations and the queue limit settings:
Bandwidth Calculation (Option A): In Junos OS, when multiple queues are assigned specific percentages of bandwidth, the " remainder " (represented by ' r ' ) is the total interface bandwidth minus the sum of the explicitly configured percentages.
Bandwidth assigned to Queue 1 (EF) = 10%.
Bandwidth assigned to Queue 2 (AF) = 10%.
Bandwidth assigned to Queue 3 (NC) = 4%.
Total explicitly assigned = $10\% + 10\% + 4\% = 24\%$.
Remainder for Queue 0 (Best Effort) = $100\% - 24\% = 76\%$.
" Limit: exact " Behavior (Option B): The exhibit shows that Queue 2 (assured-forwarding) has a Limit set to exact.
By default, a queue in Junos can consume more than its allocated bandwidth if other queues are idle.
However, when the exact keyword is applied to the transmit-rate (transmission rate), the queue is strictly rate- limited to its configured percentage.
This means that traffic in Queue 2 will be capped at 10% of the interface bandwidth regardless of whether the network is congested or not. If the traffic exceeds 10%, the excess will be dropped or buffered to match the exact rate.
Option C is incorrect because 100% of the bandwidth is not reserved for a single queue; it is distributed across four queues.
Option D is less accurate than B because it implies the drop behavior only occurs during congestion. The exact parameter enforces the limit even when the rest of the interface is completely idle.
NEW QUESTION # 16
Click the Exhibit button.
You need to dynamically assign network devices to different VLANs based on their MAC addresses. You want to separate VoIP phones from regular PCs connected to the same unmanaged switch. This switch then connects to a single port on an EX Series switch.
Referring to the exhibit, which statement describes how you apply the MAC_BASED_VLAN filter to achieve the requested filter-based VLAN functionality for devices connecting to ge-0/0/0.0?
Answer: A
Explanation:
For filter-based VLAN assignment on EX Series switches, the firewall filter must be applied to the physical interface in the input direction under the ethernet-switching family. This allows the switch to inspect incoming Layer 2 frames and dynamically assign devices to VLANs based on their source MAC addresses.
NEW QUESTION # 17
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