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Zscaler ZDTA 認定試験の出題範囲：
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質問 # 49
A user authenticates through the correct IdP and is synchronized as a member of the SCIM group Contractors.
Device posture is compliant, the network is public, and the user attempts to reach an internal HR portal categorized under an internal App Segment for employees.
The Access Policy rule order is:
* Allow High_Value_Assets with Posture
* Block High_Value_Assets
* Allow Contractor Apps
* Block Contractors from Internal Apps
* Allow Internal Apps_2_Employees
Which outcome is most consistent with rule ordering and the evaluated attributes?
- A. The user is blocked by the contractor restriction on internal apps because the first matching rule for the user ' s group denies internal segments.
- B. The user is blocked by the high-value asset rule set because the internal HR portal is treated as a high- value application.
- C. The user is permitted by the employee-focused allowance because posture is compliant and the application is internal.
- D. The user is permitted by the contractor allowance because posture is compliant and the application category is internal.
正解：A
解説：
Answer A is correct. ZPA evaluates Access Policy rules using the first-match principle. The HR portal is described as an employee internal App Segment, not a High_Value_Assets segment, so rules 1 and 2 do not match. Rule 3 allows contractor applications, but the requested HR portal is not identified as a contractor application. Rule 4 matches both relevant facts: the user belongs to the SCIM Contractors group and the destination is an internal application. Its Block action therefore ends evaluation. Rule 5 is never reached and, independently, the user is not described as an employee. Compliant posture does not grant access by itself; it only satisfies a posture condition in a rule whose remaining criteria also match. See Zscaler's Access Policy configuration guidance and Access Policy criteria overview.
質問 # 50
A regional SOC analyst reviews ZIdentity audit logs during a surge in administrator-related anomalies at a hosted data center. The same session shows a successful sign-in from a new geography, a change that relaxes an MFA requirement in a sign-on policy, and an entitlement grant to a service account used by build automation.
Which action should the incident responder take to constrain privilege-escalation exposure while preserving forensic continuity?
- A. Revoke the service account's elevated entitlements and restore the previous sign-on policy conditions that enforced stronger MFA
- B. Pause SIEM ingestion and collect on-appliance logs while delaying changes to avoid affecting correlation
- C. Increase audit verbosity for administrator actions and monitor for additional anomalies before applying restrictions
- D. Initiate a broad sign-on policy rollback across all roles and defer entitlement changes until the next maintenance cycle
正解：A
解説：
The observed entitlement grant and MFA relaxation create active privilege-escalation exposure, so containment cannot wait for further monitoring. Option A removes the newly granted privilege and restores the stronger authentication condition while limiting changes to the affected account and policy. Zscaler's Authentication Service role guidance confirms that administrators with the relevant permissions can manage users and entitlements. Forensic continuity is preserved by retaining and streaming the existing evidence; Zscaler's Authentication Service log-streaming documentation supports streaming authentication and administrator-audit data through NSS or Cloud NSS. A global rollback could disrupt unrelated roles and destroy useful configuration context. Monitoring without containment leaves the elevated service account usable. Pausing SIEM ingestion reduces evidence continuity precisely when correlation is required. After containment, the responder should preserve timestamps, request IDs, source geography, and affected-object details.
質問 # 51
When configuring Zscaler Private Access, what is the function of the Server Group?
- A. Maps Applications to FQDNs
- B. Maps App Connector Groups to Application Segments
- C. Maps FQDNs to IP Addresses
- D. Maps Applications to Application Groups
正解：C
解説：
A Server Group holds the actual backend endpoints - defined by FQDNs (or IPs) and ports - and effectively maps those FQDNs to their IP addresses so ZPA knows which hosts to steer traffic toward.
質問 # 52
Which type of attack plants malware on commonly accessed services?
- A. Remote access trojans
- B. Exploit kits
- C. Phishing
- D. Watering hole attack
正解：D
解説：
AWatering Hole Attackis characterized by attackers planting malware on websites or services that are commonly accessed by their intended victims. The goal is to infect users who visit these trusted sites by injecting malicious code or malware. This type of attack leverages the trust users place in frequently visited services to deliver malware covertly.
Other options like Remote Access Trojans, Phishing, and Exploit Kits are attack types but do not specifically involve compromising commonly accessed services to plant malware.
質問 # 53
A microsegmentation policy set contains a broad "allow employees to internal applications" rule before more specific controls. An incident review found SMB access from non-finance hosts to a finance file share.
Which refinement best addresses the unintended access while improving the internal security posture?
- A. Insert deception assets in the finance segment to divert suspicious SMB traffic away from the file share and collect telemetry
- B. Add bandwidth QoS constraints to the internal applications segment so non-finance SMB attempts are deprioritized at runtime
- C. Tighten URL Filtering for internal destinations so SMB-related domains resolve poorly in non-finance contexts
- D. Reorder the rules so the deny for non-finance SMB is evaluated before broad employee allows, and scope the SMB policy to finance hosts and device posture
正解：D
解説：
Option D removes the rule-shadowing condition and applies least privilege to the exact protocol, hosts, users, and device context involved. Zscaler's microsegmentation release guidance confirms that microsegmentation access-policy rules are organized by order and that traffic not matching an allow rule is blocked. A broad employee allow placed first can therefore defeat a narrower restriction. Moving the non-finance SMB deny above the general allow and limiting permitted SMB access to authorized finance hosts with acceptable posture directly prevents the observed lateral path. QoS changes traffic priority, not authorization. Deception can improve detection but does not remove access to the real file share. URL Filtering governs web destinations and is not the appropriate control for SMB authorization. The reordered, context-specific policy provides deterministic enforcement and better auditability.
質問 # 54
Can Notifications, based on Alert Rules, be sent with methods other than email?
- A. Leading ITSM systems can be connected to the Zero Trust Exchange using a NSS server, which will then connect to ITSM tools and forwards the alert.
- B. In addition to email, text messages can be sent directly to one cell phone to alert the CISO who is then coordinating the work on the incident.
- C. Email is the only method for notifications as that is universally applicable and no other way of sending them makes sense.
- D. In addition to email, notifications, based on Alert Rules, can be shared with leading ITSM or UCAAS tools over Webhooks.
正解：B
解説：
Beyond email, Alert Rule notifications can be pushed via Webhooks to integrate with ITSM platforms or UCaaS tools, enabling real#time incident management and collaboration in your existing service desks or messaging systems.
質問 # 55
How should an administrator determine why a website was allowed during web browsing when overlapping policies appeared to require a block, and verify which policy took precedence?
- A. Consult SaaS Security Insights to assess cloud-application exposure and control posture
- B. Use Web Insights to trace the transaction, identify the matched web rule, and confirm the action
- C. Inspect Firewall Insights to review port-based rule evaluations and bandwidth constraints
- D. Check Administrator Audit Logs to correlate administrative activity with traffic dispositions
正解：B
解説：
Web Insights contains the transaction-level evidence needed to explain a web-policy result. Zscaler's Web Insights filter reference includes fields for the blocked policy and rule that acted on a transaction, along with URL, user, category, application, action, and other enforcement details. The administrator should locate the exact request by user, URL, and timestamp, inspect the matched rule and action, and compare its numerical order and conditions with the rule that was expected to block access. This distinguishes an earlier Allow match, category mismatch, Cloud App Control precedence, or authentication-context issue. SaaS Security Insights summarizes application risk and usage rather than the precise inline decision. Administrator Audit Logs show configuration changes but not which traffic rule matched. Firewall Insights is appropriate for network-layer sessions, not the web-policy transaction described. Option C directly verifies enforcement instead of inferring it.
質問 # 56
Which proprietary technology does Zscaler use to calculate risk attributes dynamically for websites?
- A. Browser Isolation Feedback Form
- B. Third-Party Sandbox
- C. Deception Controller
- D. Zscaler PageRisk
正解：D
解説：
Zscaler PageRisk, specifically the Page Risk Index, is the proprietary scoring capability used in ZIA to evaluate the risk of web pages dynamically. Instead of relying only on static URL blocklists, PageRisk uses a multi-data algorithm that considers page content and domain characteristics. Page-content signals include risky scripts, suspicious iFrames, XSS indicators, vulnerable controls, and other active content. Domain signals include reputation, hosting location, age, and relationships to risky top-level domains. The verified answer is Option B (Zscaler PageRisk) because PageRisk is the Zscaler technology used for real-time website risk scoring.
Why the other options are incorrect:
A). Third-Party Sandbox: A sandbox detonates files to observe malicious behavior. PageRisk is a web-page
/domain scoring engine, and Zscaler uses native sandboxing rather than a third-party PageRisk service.
C). Browser Isolation Feedback Form: Browser Isolation renders risky pages remotely to protect the endpoint.
A feedback form would collect input; it would not calculate real-time web risk.
D). Deception Controller: The Deception controller manages decoys, lures, and honeytokens for intruder detection. It is about lateral-movement detection, not public website scoring.
質問 # 57
Which of the following DLP components make use of Boolean Logic?
- A. DLP Rules
- B. DLP Identifiers
- C. DLP Dictionaries
- D. DLP Engines
正解：A
解説：
DLP Rulesuse Boolean logic to define complex conditions and combinations for detecting sensitive data.
This allows the creation of granular policies that can combine multiple identifiers and dictionaries with AND, OR, and NOT operators to accurately match sensitive content.
質問 # 58
What is the purpose of a Microtunnel (M-Tunnel) in Zscaler?
- A. To provide an end-to-end communication channel to Microsoft Applications such as M365
- B. To provide an end-to-end communication channel between ZCC clients
- C. To create an end-to-end communication channel to internal applications
- D. To create an end-to-end communication channel to Azure AD for authentication
正解：C
解説：
A ZPA microtunnel is the per-application communication channel created after the user is authenticated and authorized. It carries traffic from the user side through the Zscaler service edge to the App Connector path for the internal application. Option D (To create an end-to-end communication channel to internal applications) is correct because the M-Tunnel is built for private application communication, not endpoint-to-endpoint or IdP connectivity.
Why the other options are incorrect:
A). To provide an end-to-end communication channel between ZCC clients: ZCC-to-ZCC communication would be peer endpoint connectivity. A ZPA microtunnel is created from the user side toward a specific internal application.
B). To provide an end-to-end communication channel to Microsoft Applications such as M365: Microsoft
365 optimization uses local breakout, DNS locality, and inspection bypass where Microsoft recommends it for performance.
C). To create an end-to-end communication channel to Azure AD for authentication: Azure AD communication is part of authentication. The microtunnel carries private-application traffic after access is authorized.
質問 # 59
Traffic from a remote office traverses an untrusted ISP path and must connect to Zscaler through a mapped location with a defined static IP address and an expected throughput of 300 Mbps. High availability is not required.
Which action provides the appropriate tunnel characteristics with the minimum number of tunnels?
- A. Configure a single IPSec tunnel to a regional Service Edge, and configure the location's static IP address and bandwidth expectation
- B. Build two IPSec tunnels with relaxed Dead Peer Detection (DPD) timers to avoid flapping during transient ISP outages
- C. Implement two GRE tunnels to different Service Edges and rely on SD-WAN latency scoring to steer traffic
- D. Deploy a GRE tunnel with aggressive keepalives to compensate for underlay instability, and assign the static IP address to the location
正解：A
解説：
Option B meets the encryption, throughput, addressing, and minimum-tunnel requirements. IPSec protects traffic crossing the untrusted ISP path, whereas GRE does not provide encryption by itself. Zscaler documents a 400 Mbps limit for each IPSec tunnel's public source IP address, so one tunnel is sufficient for the stated
300 Mbps expectation. The office can be configured as a ZIA location using its static public IP address and the required bandwidth value. Zscaler's traffic-forwarding guidance explains the IPSec throughput limit, and its IPSec configuration guide confirms the 400 Mbps limit per public source IP. Because high availability is explicitly unnecessary, a second tunnel would add complexity without satisfying another requirement.
Options A and C use unencrypted GRE, while option D creates an unnecessary redundant IPSec design.
質問 # 60
What is a key feature of OpenID Connect (OIDC)-based authentication for users?
- A. It uses XML to format identity information.
- B. It requires annual certificate maintenance.
- C. It supports attribute-based access control.
- D. It uses JSON-based web tokens.
正解：D
解説：
Comprehensive and Detailed 100 to 150 words of Explanation From Zscaler Digital Transformation Administrator topics:
OpenID Connect is an identity layer built on OAuth 2.0 and commonly represents identity information in JSON Web Tokens (JWTs), making C correct. A signed ID token carries claims about the authenticated user and can be validated by the relying service using the issuer's published keys. This JSON-based design distinguishes OIDC from SAML, which normally represents assertions in XML. OIDC does not inherently require annual certificate maintenance; signing keys and validation metadata are managed through the provider's configuration and key-discovery mechanisms. Attribute-based access control can consume identity claims, but it is not the protocol characteristic being tested. Zscaler's administrator study material identifies JWTs as JSON-based tokens used in OIDC contexts, and its OpenID configuration documentation explains that attributes are obtained from the OIDC JSON.
質問 # 61
A company must enforce least-privileged access to private applications when contractors connect from varying locations using devices with inconsistent security posture. The security team wants decisions to use identity and per-session context instead of broad network assumptions.
Which approach best meets the requirement?
- A. Prioritize ZIA URL Filtering rules that use department attributes to shape contractor access, and leave ZPA unchanged
- B. Use location groups to provide contractors with tiered access to most internal services and defer device evaluation to downstream controls
- C. Require session MFA for contractor authentication and use SAML attributes to relax private-application access broadly
- D. Build ZPA Access Policy rules around a SCIM-synchronized contractor group, apply device-posture conditions to sensitive application segments, and retain a final catch-all deny rule
正解：D
解説：
Option A combines authoritative identity membership, device context, application scope, and deny-by-default enforcement. SCIM keeps the contractor group synchronized with the identity provider, while the ZPA Access Policy limits that group to specifically defined application segments. Device-posture conditions can then require an acceptable security state for each sensitive access attempt. Zscaler's SCIM Groups documentation confirms that synchronized groups can be used to enforce policy. Its Access Policy documentation lists device posture and other contextual criteria for restricting application access. URL Filtering governs internet destinations and cannot replace ZPA private-application authorization. Location- based access extends trust from the network and ignores the inconsistent endpoint posture described in the scenario. MFA strengthens authentication but does not justify broad application access; least privilege still requires narrow application entitlements and contextual policy evaluation.
質問 # 62
How do Access Policies relate to the Application Segments and Application Segment Groups?
- A. When a condition is met, an Access Policy can allow access to Application Segments Groups and block access to Application Segment.
- B. When a condition is met, an Access Policy can allow access to Application Segments and block access to Application Segment Groups.
- C. When a condition is met. an Access Policy can either allow or block access to Application Segments and Application Segment Groups.
- D. When a condition is met, an Access Policy can either allow or block access to Application Segments OR Application Segment Groups.
正解：C
解説：
ZPA Access Policies evaluate conditions such as identity, group, posture, location, risk, and client context, then apply an allow or block outcome. Those outcomes can target individual Application Segments or Application Segment Groups. Segment Groups are administrative containers, but policy can still bind access decisions to them. Option C (When a condition is met. an Access Policy can either allow or block access to Application Segments and Application Segment Groups) is correct because Access Policies can allow or block both segments and segment groups when rule conditions match.
Why the other options are incorrect:
A). When a condition is met, an Access Policy can either allow or block access to Application Segments OR Application Segment Groups: An Application Segment Group is an administrative grouping of app segments used to simplify access policy targeting.
B). When a condition is met, an Access Policy can allow access to Application Segments Groups and block access to Application Segment: An Application Segment defines private app reachability by FQDN
/IP, ports, and related settings.
D). When a condition is met, an Access Policy can allow access to Application Segments and block access to Application Segment Groups: An Application Segment Group is an administrative grouping of app segments used to simplify access policy targeting.
質問 # 63
When configuring Applications to be monitored, what probe types can be created?
- A. Page Fetch Time Probe and Cloud Path Probe
- B. Web Probe and Cloud Path Probe
- C. Page Fetch Time Probe and Server Response time Probe
- D. Web Probe and Page Fetch Time Probe
正解：B
解説：
ZDX monitoring uses two major probe types: Web Probes and Cloud Path Probes. Web Probes measure application availability and page-fetch behavior, while Cloud Path Probes show hop-by-hop path quality, latency, packet loss, and network path conditions. Option D (Web Probe and Cloud Path Probe) is correct because those are the supported ZDX probe types.
Why the other options are incorrect:
A). Page Fetch Time Probe and Cloud Path Probe: Page Fetch Time is a metric from web probing; the pair listed is not the clean Web Probe and CloudPath Probe grouping used by ZDX.
B). Web Probe and Page Fetch Time Probe: A Web Probe is valid, but Page Fetch Time is a metric rather than the second probe type. The network path probe is CloudPath.
C). Page Fetch Time Probe and Server Response time Probe: Server Response Time measures how long the destination application takes to respond to a probe or request.
質問 # 64
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