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何よりもまず、当社Juniperはほぼ10年間この分野で確固たる勢力となり、当社JPTestKingのJN0-336試験問題は国際市場でそのような迅速な販売を享受しましたが、お客様に手頃な価格を維持しています。 第二に、最終決定を下す前に、当社がコンパイルした最新の急流JN0-336を直接体験できるように、このWebサイトで無料のデモを用意しました。 ですから、もうheしないで、急いでJN0-336テストSecurity, Specialist (JNCIS-SEC)問題を購入してください。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Security Policy | 25% | - Policy Troubleshooting - Policy Components and Structure - Policy Scheduling - Policy Logging |
| Topic 2: Screen Options | 15% | - Custom Screen Options - Attack Detection and Mitigation - Screen Options Configuration |
| Topic 3: UTM (Unified Threat Management) | 15% | - Content Filtering - Antispam - Web Filtering - Antivirus |
| Topic 4: IPsec VPNs | 25% | - Policy-Based VPNs - Route-Based VPNs - VPN Troubleshooting - IKE Phase 1 and Phase 2 - VPN High Availability |
| Topic 5: High Availability Clustering | 20% | - Chassis Cluster Architecture - Control and Data Plane Synchronization - Failover Behavior - Configuration and Troubleshooting |
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質問 # 53
You want to include a custom attack object named Custom-FTP-Attack and set the action to drop the packet.
Referring to the exhibit, which modifications would you make?
正解：A
解説：
The correct answer is B. Add custom-attack Custom-FTP-Attack to the attacks section and change the action to drop-packet. In the exhibit, the IDP rule is built under rulebase-ips with a match block and a then block.
Attack objects belong inside the match attacks hierarchy because they define what malicious pattern the IDP rule is trying to detect. Juniper's IDP documentation states that attack objects are specified in rules to identify malicious activity and that the rule's attack objects/groups are the attacks the device matches in monitored traffic.
The enforcement behavior belongs in the then action hierarchy. The current rule uses close-client; to meet the requirement, it must be changed to drop-packet. Juniper defines Drop Packet as an IDP action that drops a matching packet before it reaches its destination without closing the connection. Option A keeps the wrong action. Option C is structurally wrong because a custom attack object is not configured under the action section. Option D is also wrong because the notification section controls logging/alert behavior, not attack matching. Reference topics: IDP rulebase, custom attack objects, match attacks hierarchy, IDP actions, drop- packet behavior.
質問 # 54
Which statement defines the function of an Application Layer Gateway (ALG)?
正解：B
解説：
The statement that defines the function of an Application Layer Gateway (ALG) is: The ALG uses software processes for managing specific protocols. An ALG is a security component that operates at the application layer (layer 7) of the OSI model and handles data associated with certain application protocols, such as SIP, FTP, RTSP, etc. An ALG acts as a proxy or intermediary between the client and the server applications and performs various functions, such as address and port translation, resource allocation, application response control, and synchronization of data and control traffic. An ALG can also inspect and modify the application payload to enable firewall or NAT traversal, prevent spoofing or DoS attacks, or enforce granular security policies based on application-specific commands. Reference: = Application-level gateway - Wikipedia, What Is an Application Layer Gateway (ALG)? | F5, What is ALG
** Application Layer Gateway | 3CX
質問 # 55
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.)
正解：B、C
解説：
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.
質問 # 56
Which two statements accurately describe the role of hashing in VPNs? (Choose two.)
正解：A、B
解説：
The correct answers are B and D. In VPN cryptography, hashing is used for authentication and integrity checking, not confidentiality. Juniper's IPsec documentation describes MD5 as producing a 128-bit hash, also called a digital signature or message digest, from a message of arbitrary length. It also describes SHA as producing a 160-bit hash from a message of arbitrary length. That directly supports option B because a hash function takes variable-length input and produces a fixed-size digest.
Option D is also correct because Juniper states that the resulting hash is used like a fingerprint of the input to verify content and source authenticity and integrity. Juniper's IPsec overview further explains that Junos compares the calculated message digest against the expected digest to verify that the message has not been tampered with.
Option A is wrong because hashing is not compression; it is one-way digest generation. Option C is wrong because encryption protects confidentiality, while hashing validates integrity and authenticity. In IPsec, algorithms such as AES, DES, and 3DES provide encryption, while MD5, SHA-1, and SHA-2 provide hashing/HMAC-based authentication. Reference topics: IPsec VPN, hashing, HMAC, MD5, SHA, message digest, data integrity.
質問 # 57
You are establishing an IPsec VPN and must ensure that payload data is encrypted.
In this scenario, which IPsec security protocol should you configure?
正解：D
解説：
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.
質問 # 58
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JN0-336認定は、特定の知識分野の習熟度を示すことができます。これは、認定として一般大衆に国際的に認められ、受け入れられています。 JN0-336認定は非常に高いため、取得が容易ではありません。時間とエネルギーを投資する必要があります。自分で厳密にリクエストできるかどうかわからない場合は、JN0-336テスト資料が役立ちます。 JN0-336試験の高い合格率で98％以上の場合、JN0-336試験は簡単に合格します。
JN0-336テスト資料: https://www.jptestking.com/JN0-336-exam.html
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