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| Section | Objectives |
|---|---|
| Topic 1: SSL Proxy | - SSL inspection concepts
|
| Topic 2: Juniper Advanced Threat Prevention (ATP) Cloud | - ATP Cloud concepts
|
| Topic 3: Security Director (Junos Space) | - Management platform
|
| Topic 4: High Availability (HA) Clustering | - HA fundamentals
|
| Topic 5: Identity-Aware Security Policies | - Identity concepts
|
| Topic 6: Intrusion Detection and Prevention (IDP) | - IDP concepts and architecture
|
| Topic 7: IPsec VPN | - Operations and troubleshooting
|
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NEW QUESTION # 39
You are establishing an IPsec VPN and must ensure that payload data is encrypted.
In this scenario, which IPsec security protocol should you configure?
Answer: B
Explanation:
The correct answer is B. ESP. In IPsec, the security protocol responsible for encrypting protected traffic is Encapsulating Security Payload (ESP). Juniper defines ESP as the IPsec protocol used for encrypting the IP packet and authenticating its contents. In practical SRX VPN design, ESP is the normal protocol selected when confidentiality is required because it can provide encryption, packet integrity, authentication, and anti- replay protection depending on the configured IPsec proposal.
Option A, SHA-1, is incorrect because SHA-1 is an authentication/hash algorithm, not an IPsec security protocol and not a payload encryption mechanism. Option C, AH, is incorrect because Authentication Header validates packet source and integrity but does not encrypt payload data. AH is therefore unsuitable when the requirement explicitly says payload data must be encrypted. Option D, PFS, is incorrect because Perfect Forward Secrecy is a key-exchange property used during Phase 2 rekeying; it strengthens key independence but does not itself encrypt packets. In Junos IPsec configuration logic, the security protocol decision is between ESP and AH, and encryption requires ESP. Reference topics: IPsec VPN, ESP, AH, IPsec security protocols, payload confidentiality, IPsec proposal design.
NEW QUESTION # 40
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.)
Answer: B,D
Explanation:
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.
NEW QUESTION # 41
Which protocol does the SRX Series Firewall use to communicate with a Windows domain controller?
Answer: C
Explanation:
The correct answer is B. LDAP. In Juniper identity-aware firewall deployments, the SRX Series Firewall integrates with Microsoft Active Directory so that user and group information can be used in security policy decisions. Juniper's Active Directory identity-source documentation states that the LDAP protocol helps identify the groups to which users belong, and that username and group information are queried from the LDAP service running on the Active Directory domain controller. It also explains that the device uses Lightweight Directory Access Protocol to obtain user and group information required for Active Directory identity-source operation.
Option A, SSH, is wrong because SSH is a device management protocol, not the protocol SRX uses to query Active Directory user/group membership. Option C, DNS, is wrong because DNS can resolve names but does not provide Active Directory group mapping to the firewall. Option D, NETCONF, is wrong because NETCONF is used for network device configuration and automation, not Windows domain-controller identity queries. In a complete identity-aware firewall workflow, SRX may also use WMI/DCOM-related mechanisms to read Windows event-log data, but among the available protocol choices, LDAP is the correct answer because it is the directory protocol used to query user and group information. Reference topics: Active Directory identity source, LDAP, domain controller communication, user and group mapping.
NEW QUESTION # 42
You enable chassis clustering on two devices and assign a cluster ID and a node ID to each device.
In this scenario, what is the correct order for rebooting the devices?
Answer: A
Explanation:
When chassis clustering is enabled and IDs are assigned, it is typically recommended to first reboot the secondary device. This allows the secondary device to fully integrate and recognize its role and settings within the cluster without affecting the ongoing traffic that the primary device might be handling.
Once the secondary device has successfully rebooted and is operational within the cluster, the primary device can then be rebooted. This ensures that the primary device's reboot does not cause any network downtime, as the secondary device, now fully operational, can take over the traffic and roles as needed.
NEW QUESTION # 43
Exhibit
Referring to the exhibit, which two statements describe the type of proxy used? (Choose two.)
Answer: B,D
Explanation:
In the exhibit, the SRX Firewall could be acting as a forward proxy, managing outbound internet requests from internal users or clients within a private network to the internet. Forward proxies are commonly used to control and monitor outbound traffic, provide content caching to improve load times, and enforce company policies.
The scenario can also imply a reverse proxy setup where the SRX Firewall might be configured to direct incoming requests from the internet to the web application. Reverse proxies are used to balance load, enhance security, manage SSL encryption, and provide additional caching functionalities for inbound traffic to servers.
NEW QUESTION # 44
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