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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Layer 2 Security | 10-15% | - DHCP snooping, Dynamic ARP Inspection and IP Source Guard - Port security, MAC limiting and storm control - Layer 2 firewall filters and security features |
| Topic 2: OSPF | 15-20% | - Route summarization and redistribution - Neighbor formation, area design and LSA types - Configuration, verification and troubleshooting |
| Topic 3: 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 4: Layer 2 Switching and VLANs | 15-20% | - Link Aggregation Groups (LAG) and Virtual Chassis - VLAN concepts, configuration, trunking and tagging - Spanning Tree Protocol (STP, RSTP, MSTP) operation and configuration |
| Topic 5: BGP | 15-20% | - Routing policies, filtering and common troubleshooting - Neighbor relationships and session establishment - Route advertisement, attributes and path selection |
| Topic 6: High Availability and Resiliency | 5-10% | - Redundancy protocols and failover mechanisms - Graceful restart and non-stop routing - Network resiliency design and troubleshooting |
| Topic 7: IP Multicast | 5-10% | - Multicast routing monitoring and troubleshooting - PIM Dense Mode, Sparse Mode and RP mechanisms - IGMP operation and configuration |
| Topic 8: Tunnels and Overlays | 5-10% | - Tunnel types, encapsulation and operation - Overlay network design and connectivity - GRE, IP-IP and dynamic tunnel configuration |
| Topic 9: IS-IS | 10-15% | - Configuration and route exchange - Scalable enterprise deployment and troubleshooting - Adjacency establishment, levels and metrics |
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NEW QUESTION # 98
R1 has a BGP session with a router that has a peer autonomous system number of 64501. It is exchanging routes, and is advertising those routes to IBGP peers. The downstream IBGP peers, however, cannot pass traffic to the advertised networks.
Referring to the exhibit, which configuration change must occur to solve this problem?
Answer: D
NEW QUESTION # 99
You are a network operator who wants to add a second ISP connection and remove the default route to the existing ISP You decide to deploy the BGP protocol in the network. What two statements are correct in this scenario? (Choose two.)
Answer: C,D
Explanation:
The rules are as simple as follows:
1. IBGP peers advertise routes received from EBGP peers to other IBGP peers.
2. EBGP peers advertise routes learned from IBGP or EBGP peers to other EBGP peers.
https://community.juniper.net/discussion/understanding-how-ibgpebgp-behaves-in-junos
NEW QUESTION # 100
Which two statements about redundant trunk groups on EX Series switches are correct? (Choose two.)
Answer: B,D
Explanation:
Redundant trunk groups are designed to provide link redundancy. If the primary link fails, the secondary link will automatically take over to ensure continued connectivity.
In redundant trunk groups, while regular data traffic is sent over the primary link, Layer 2 control traffic (such as STP, LACP, etc.) is allowed on the secondary link to maintain network stability and protocol operations.
https://www.juniper.net/documentation/us/en/software/junos/multicast-l2/topics/topic-map/redundant-trunk-groups.html
NEW QUESTION # 101
Referring to the exhibit, why is this OSPF adjacency remaining in this state?
Answer: B
Explanation:
OSPF stuck in ExStart is mainly related to mismatched MTU. It could also be caused by a firewall filter on the loopback interface, but this is not an alternative.
NEW QUESTION # 102
Click the Exhibit button. You are asked to ensure that there will not be any unwanted STP topology changes affecting your root bridge placement because a rogue switch was introduced into the network at the access layer. Referring to the exhibit, which interfaces will need to have root protection applied to accomplish this task?
Answer: C
Explanation:
Root protection (root guard) must always be applied on the ports of the switches you trust to remain root-bridge-eligible, specifically on the interfaces facing away from the legitimate root and toward parts of the network where an untrusted or rogue device could plausibly appear and begin transmitting superior BPDUs. In this topology, Switch-1 is the intended, permanent root bridge (lowest priority, 4k), and Switch-2 is its aggregation-layer peer; both sit above the access layer, where Switch-3 and Switch-4 connect downstream toward end-user-facing infrastructure and where an accidental or malicious rogue switch is realistically most likely to be introduced. The ge-
0/0/6 and ge- 0/0/8 interfaces on Switch-1 and Switch-2 are precisely the downlink ports facing that access layer, meaning they are the exact points at which a rogue switch's superior BPDU (one advertising a lower priority than the legitimate root) would first be received if such a device appeared beneath Switch-3 or Switch-4. Applying root protection on those specific interfaces causes Junos to immediately block (move to a root-inconsistent, discarding state) any port that receives a superior BPDU, preventing the rogue device from ever being accepted as root, while normal, non-superior BPDUs continue to be processed without disruption. Applying root guard on Switch-1 and Switch-2's peer link (ge- 0/0/12/13) would be inappropriate, since that link legitimately connects two trusted, root-eligible switches.
NEW QUESTION # 103
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