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| Section | Objectives |
|---|---|
| Intrusion Detection and Prevention (IDP) | - IDP concepts and architecture
|
| SSL Proxy | - SSL inspection concepts
|
| IPsec VPN | - Operations and troubleshooting
|
| Identity-Aware Security Policies | - Identity concepts
|
| Juniper Advanced Threat Prevention (ATP) Cloud | - ATP Cloud concepts
|
| High Availability (HA) Clustering | - Chassis cluster operations
|
| Security Director (Junos Space) | - Management platform
|
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NEW QUESTION # 64
Your network uses a single JSA host and you want to implement a cluster.
In this scenario, which two statements are correct? (Choose two.)
Answer: A,C
Explanation:
According to the Juniper Networks JNCIP-SEC Study Guide, when setting up a cluster with a single JSA host, both the primary and secondary hosts must have the same software version installed. Additionally, an unused IP address must be assigned to the cluster virtual IP. The primary and secondary hosts do not need to be configured with the same storage devices, and the secondary host cannot be used to backup multiple JSA primary hosts.
NEW QUESTION # 65
You work on the security operations team that manages firewalls only. In your data center, there are two SRX chassis clusters. These clusters operate on VLAN 1042. The network team advises you that they see the same MAC address coming from both chassis clusters for reth0.
Why is this occurring?
Answer: C
Explanation:
The correct answer is A. The same cluster ID was used on both clusters. In an SRX chassis cluster, a redundant Ethernet interface, or reth, uses a cluster-derived virtual MAC address. When two separate chassis clusters are placed in the same Layer 2 domain and use the same cluster ID, their corresponding reth interfaces can generate the same virtual MAC address. That is exactly why the network team sees the same MAC address for reth0 from both clusters on VLAN 1042. Juniper community guidance states bluntly that the reth interface MAC address is derived from the cluster ID and that two clusters using the same ID produce identical MAC addresses.
Option B is wrong because split-brain would describe both nodes inside the same cluster thinking they are primary, not two separate chassis clusters producing the same reth MAC address. Option C is wrong because multiple SRX clusters can exist on the same VLAN if their cluster IDs are unique. Option D is wrong because LACP synchronization affects bundled link operation, not the generation of the reth virtual MAC address. The correction is to assign unique cluster IDs to clusters sharing the same Layer 2 segment. Reference topics: HA Clustering, chassis cluster ID, reth virtual MAC address, duplicate MAC prevention, Layer 2 cluster design.
NEW QUESTION # 66
Which two statements are correct about client-protection Secure Socket Layer (SSL) proxy configurations?
(Choose two.)
Answer: B,C
Explanation:
The correct answers are B and D. In Junos SSL proxy terminology, client protection maps to SSL forward proxy. In a forward-proxy deployment, the SRX sits between internal clients and external SSL/TLS servers.
The firewall intercepts the server certificate, generates a substitute certificate, signs it with the configured root CA, decrypts the SSL session for inspection, and then re-encrypts traffic toward the destination server.
Juniper's SSL proxy configuration table shows that a forward-proxy profile uses root-ca configured = Yes and server-certificate configured = No. It also states that configuring neither certificate type fails commit validation, while configuring both root-ca and server-certificate in the same profile is unsupported.
Option A is wrong because a server certificate is required for reverse proxy/server protection, not for client- protection forward proxy. Option C is wrong because without a trusted root CA, client browsers would not trust the certificates generated by the SRX during interception. Juniper separately notes that the root CA certificate is required for client browsers to trust certificates signed by the firewall. Reference topics: SSL Proxy, client protection, SSL forward proxy, root CA, server protection, SSL reverse proxy.
NEW QUESTION # 67
On an SRX5800, which port is used for chassis cluster out-of-band management?
Answer: D
NEW QUESTION # 68
You need to secure communications from a mobile command center which uses a 5G mobile ISP behind CGNAT to an SRX Series Firewall at headquarters.
Which two actions should be performed on the SRX Series Firewall in this scenario? (Choose two.)
Answer: A,C
Explanation:
The correct answers are A and D. A mobile command center using a 5G ISP behind CGNAT is operating behind dynamic address translation. For IPsec to work reliably through NAT, the SRX must support NAT Traversal, which encapsulates IKE and ESP traffic in UDP/4500 after NAT is detected. Juniper states that NAT-T is used when NAT devices exist in the datapath and that NAT keepalives are required because NAT devices age out UDP translations. Juniper's Security Director VPN workflow also specifically says to enable NAT-T when the dynamic endpoint is behind a NAT device.
DPD is also required because mobile and carrier-grade NAT connections can disappear, roam, or become stale without a clean tunnel teardown. Juniper defines Dead Peer Detection as the method used by IPsec peers to verify whether the remote peer is still present and responsive by sending encrypted IKE notification payloads and waiting for acknowledgements. Option B is not the best answer because IKEv1 aggressive mode is weaker and does not provide identity protection; Juniper also notes that aggressive mode applies only to IKEv1. Option C is invalid because IKEv2 aggressive mode does not exist. Reference topics: IPsec VPN, NAT-T, CGNAT, dynamic endpoints, DPD, IKE peer availability.
NEW QUESTION # 69
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