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| Section | Objectives |
|---|---|
| Topic 1: IPsec VPN | - IPsec fundamentals and deployment
|
| Topic 2: Intrusion Detection and Prevention (IDP) | - IDP concepts and architecture
|
| Topic 3: Identity-Aware Security Policies | - Identity concepts
|
| Topic 4: Juniper Advanced Threat Prevention (ATP) Cloud | - Operations
|
| Topic 5: SSL Proxy | - SSL inspection concepts
|
| Topic 6: High Availability (HA) Clustering | - Chassis cluster operations
|
| Topic 7: Security Director (Junos Space) | - Management platform
|
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64. Frage
On an SRX Series firewall, what are two ways that Encrypted Traffic Insights assess the threat of the traffic? (Choose two.)
Antwort: B,C
Begründung:
Encrypted Traffic Insights is a feature that enables the SRX Series firewall and the ATP Cloud to detect malicious threats that are hidden in encrypted traffic without decrypting the traffic. It does so by analyzing the metadata and connection patterns of the encrypted sessions.
Two ways that Encrypted Traffic Insights assess the threat of the traffic are:
It validates the certificates used: The SRX Series firewall extracts the server certificate from the encrypted session and compares its signature with a blocklist of known malicious certificates provided by ATP Cloud. If there is a match, the session is blocked and reported as a threat.
It reviews the timing and frequency of the connections: The SRX Series firewall sends the connection details, such as source and destination IP addresses, ports, protocols, and timestamps, to ATP Cloud.
ATP Cloud applies behavior analysis and machine learning algorithms to detect anomalous or suspicious patterns of connections, such as high frequency, low duration, or unusual timing. Reference: = Juniper Networks Expands Connected Security Portfolio with Encrypted Traffic Analysis for Juniper Advanced Threat Prevention and SecIntel for Mist Wireless, Encrypted Traffic Insights Overview, Configure Encrypted Traffic Insights
65. Frage
You are configuring a redundancy group using Ethernet interfaces.
In this scenario, which two actions must be performed? (Choose two.)
Antwort: A,D
Begründung:
The correct answers are A and C. In an SRX chassis cluster, redundant Ethernet interfaces are configured as reth interfaces. Juniper defines a reth interface as a pseudointerface that includes at least one physical interface from each node in the cluster. Therefore, assigning a physical interface from node0 and a physical interface from node1 to the same reth interface is mandatory for redundant Ethernet operation. Juniper also states that before configuring chassis cluster redundant Ethernet interfaces, you must set the number of redundant Ethernet interfaces.
Option C maps to the required reth-count configuration under the chassis cluster hierarchy. Without defining the number of reth interfaces, Junos does not know how many redundant Ethernet pseudointerfaces are available for the cluster configuration. Option B is wrong because setting a retry interval is not a required step for creating a reth interface or redundancy group. Option D is wrong because heartbeat behavior belongs to cluster control-link monitoring and chassis-cluster node health, not to the required configuration steps for Ethernet reth membership. The required design steps are: define reth capacity, create/configure the reth interface, assign child physical links from both nodes, and associate the reth with the proper redundancy group. Reference topics: HA Clustering, redundant Ethernet interfaces, reth-count, reth child interfaces, redundancy groups.
66. Frage
You have configured a new site-to-site VPN tunnel. The exhibit shows the security IPsec statistics output for the specific tunnel index from one of the tunnel-end devices.
Which two statements are correct in this scenario? (Choose two.)
Antwort: C,D
Begründung:
The correct answers are C and D. The exhibit shows ESP encrypted bytes = 0, ESP decrypted bytes = 0, encrypted packets = 0, and decrypted packets = 0. That means no traffic is successfully passing through the IPsec tunnel. Juniper's show security ipsec statistics command displays ESP encrypted/decrypted packet and byte counters, so zero values on these counters indicate that the tunnel is not successfully carrying protected ESP traffic.
Option C is also correct because the output shows ESP authentication failures and ESP decryption failures.
Since ESP is the IPsec protocol responsible for encrypted payload handling, failures in ESP authentication
/decryption point to an ESP/IPsec Phase 2 mismatch or incorrect configuration, such as mismatched authentication algorithm, encryption algorithm, keys, proposal parameters, or incompatible negotiated SA settings. Juniper's IPsec overview explains that Phase 2 negotiates the IPsec SA used to authenticate traffic flowing through the tunnel, so ESP-related failures belong to the IPsec/ESP configuration path rather than AH.
Option A is wrong because the AH counters and AH authentication failures are zero; the evidence is not pointing to AH. Option B is unsupported because the output does not show peer reboot behavior. Reference topics: IPsec VPN, ESP statistics, Phase 2/IPsec SA negotiation, ESP authentication failures, ESP decryption failures.
67. Frage
You are implementing an SRX Series device at a branch office that has low bandwidth and also uses a cloud- based VoIP solution with an outbound policy that permits all traffic.
Which service would you implement at your edge device to prioritize VoIP traffic in this scenario?
Antwort: A
Begründung:
The correct answer is D. AppQoS. The requirement is not to block, permit, translate, or inspect SIP signaling; it is to prioritize VoIP traffic on a low-bandwidth branch link. Juniper Application QoS, or AppQoS, is designed exactly for this purpose. Juniper states that AppQoS provides the ability to prioritize and meter application traffic so business-critical or high-priority application traffic receives better service. It can classify traffic by application, assign forwarding classes, rewrite DSCP values, set loss priority, and apply rate limiters.
Option A, AppFW, is wrong because AppFW controls application access; it is used to permit, deny, reject, or log application traffic, not primarily to prioritize voice traffic. Option B, SIP ALG, is wrong because the SIP ALG helps inspect and handle SIP control traffic and related media pinholes, but it is not a QoS prioritization service. Option C, AppQoE, is not the correct SRX edge service being tested here. For cloud-based VoIP under a broad outbound permit rule, AppQoS is the correct service because it can identify the VoIP application and give it better treatment during congestion. Reference topics: AppQoS, application traffic control, VoIP prioritization, DSCP rewrite, forwarding class, rate limiting.
68. Frage
Which two statements are true about Juniper ATP Cloud? (Choose two.)
Antwort: A,D
Begründung:
Dynamic analysis is not always necessary to determine if a file contains malware, as the ATP Cloud uses a cache lookup to quickly identify known malicious files. If the cache lookup determines that a file contains malware, static analysis is not performed to verify the results. This information can be found on the Juniper website here: https://www.juniper.net/documentation/en_US/release- independent/security/jnpr-security-srx-series/inform
69. Frage
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