250-583認定で究極のガイド [2026年更新]
250-583練習試験と学習ガイドは厳密検証された
質問 # 40
Why is Connector OS Hardening (e.g., minimal packages) recommended?
- A. Reduces attack surface and patch workload
- B. Raises TLS handshake speed by 10%
- C. Increases cryptographic entropy pool
- D. Automatically qualifies for ISO 27017
正解：A
解説：
Fewer packages mean fewer vulnerabilities.
質問 # 41
How does Symantec ZTNA assist auditors in validating compliance for regulated workloads?
- A. Disables policy edits during audit windows
- B. Generates automated SOC 1 reports
- C. Allows direct database queries to the logging backend
- D. Exports searchable, signed log files with tamper-evident hashes
正解：D
解説：
Signed logs with hashes give auditors integrity assurance.
質問 # 42
When integrating ZTNA with Cloud DLP, why should sensitive-data policies be enforced at the application layer rather than the Site layer?
- A. Reduces Connector CPU utilization
- B. Avoids duplicate log entries in SIEM
- C. Ensures RBAC inheritance across Collections
- D. Enables granular data handling per application context
正解：D
解説：
Application-level enforcement applies the most precise control to data transactions.
質問 # 43
What condition triggers Policy Shadowing warnings in the Admin Console?
- A. DLP fingerprints overlap
- B. A new rule duplicates but is lower priority than an existing rule
- C. An application is unmapped to any Site
- D. Connector logs exceed 1 GB/day
正解：B
解説：
Overlapping rules can render lower ones ineffective.
質問 # 44
A DevOps team requests temporary shell access to an internal build server.
Which ZTNA capability can grant least-privilege, time-bound access?
- A. SIEM-triggered token refresh
- B. Connector NAT exception list
- C. Permanent addition to privileged IDP group
- D. Just-in-time (JIT) Policy with expiry timer
正解：D
解説：
JIT policies allow precise, time-limited access without long-term group changes.
質問 # 45
In Symantec ZTNA, which feature combination best mitigates lateral movement while ensuring data compliance for unmanaged (BYOD) endpoints?
- A. Agent-based posture checks + DNS tunneling
- B. Network Security Boundary + zero-log retention
- C. Agent-less access + Cloud DLP inspection
- D. Site segmentation + Threat Intelligence Services (TIS) feeds
正解：C、D
解説：
Agent-less + DLP controls data exfiltration on BYOD, and segmentation with TIS reduces lateral threat spread.
質問 # 46
A multi-tenant MSSP manages several customer ZTNA tenants.
Which practices streamline operations while preserving tenant isolation?
- A. Consolidate all tenants under one Admin Console instance
- B. Delegate per-tenant RBAC roles for policy operations
- C. Use a single SIEM pipeline with tenant-tagged log events
- D. Share a global DNS zone across tenants to reduce complexity
正解：B、C
解説：
Tenant-tagged logs and scoped RBAC maintain isolation; shared DNS or single Console risks data crossover.
質問 # 47
Which two statements describe the relationship between Collections and Sites?
- A. A Collection can include applications from multiple Sites
- B. An application must be placed in a Collection before it is attached to a Site
- C. RBAC roles are assigned at the Collection level to manage access across Sites
- D. A Site can belong to multiple Collections simultaneously
正解：A、C
解説：
Collections span Sites and drive RBAC; an app is first created, then mapped to a Site.
質問 # 48
When first entering the ZTNA Admin Portal, which two sections must a Tenant Admin configure before any policy can be enforced?
- A. Logging & Reporting destinations
- B. Network Security Boundary (Sites & Connectors)
- C. Threat Intelligence Services feed overrides
- D. Authentication (IDP) settings
正解：B、D
解説：
Without an IDP and at least one Site/Connector, no user or traffic context exists for enforcement.
質問 # 49
Which option is required to synchronize device posture attributes from a mobile MDM into ZTNA policies?
- A. Deploy a dedicated Site per mobile region
- B. Configure agentless access only
- C. Enable MDM connector API integration and map attributes to posture checks
- D. Push custom DNS TXT records to mobile devices
正解：C
解説：
MDM API feeds posture data consumed by ZTNA.
質問 # 50
Why would you map an internal legacy SMTP service as an agent-based application instead of agentless?
- A. Non-browser protocols need tunnel-based agent control
- B. Agentless mode supports only HTTPS with Web-socket upgrade
- C. DLP cannot inspect SMTP payloads via agent
- D. SMTP uses SAML authentication natively
正解：A
解説：
Agent tunnels non-HTTP traffic; agentless is web-only.
質問 # 51
You must ensure that log shipping continues if the primary SIEM endpoint fails.
What is the correct setup?
- A. Switch to UDP transport to permit lossy delivery
- B. Enable log truncation on failure
- C. Store logs only on the Connector until manual export
- D. Configure multiple syslog destinations with priority order
正解：D
解説：
Multiple destinations provide automatic failover.
質問 # 52
Which two SIEM Field Normalization best practices ease cross-product correlation?
- A. Use vendor-agnostic ECS/CEF field names
- B. Convert timestamps to local time zones
- C. Strip out policyId to reduce noise
- D. Consistently lowercase user identifiers
正解：A、D
解説：
Standard fields and casing support analytics; stripping IDs or localizing times hurts correlation.
質問 # 53
Which Connector operating mode provides the best balance between transparency and control for migrations?
- A. Discovery-only mode
- B. Tap (SPAN) mode behind load balancer
- C. Policy-enforced inline proxy mode
- D. Reverse proxy (transparent) mode
正解：A
解説：
Discovery mode observes traffic without enforcement, easing migrations.
質問 # 54
A ZTNA Policy Simulator indicates "Unmatched" for a test request.
Which next step best pinpoints the gap?
- A. Increase simulator verbosity
- B. Restart the Connector in safe mode
- C. Verify application is mapped to correct Site and Collection
- D. Change token lifetime in IDP
正解：C
解説：
Unmapped app/collection commonly causes unmatched.
質問 # 55
Which action enables high-availability for Cloud SWG integration?
- A. Disable TLS 1.3 to avoid handshake retries
- B. Convert all agentless apps to agent-based
- C. Deploy agents in multi-region mode with automatic failover endpoints
- D. Increase SWG TCP idle timeout
正解：C
解説：
Multi-region agents fail over seamlessly to alternate SWG PoPs.
質問 # 56
Which action best mitigates shadow-IT file-sharing over personal cloud drives?
- A. Increase Connector MTU to fragment packets
- B. Policy condition "Application Category = File Sharing" THEN Block
- C. Disable agentless mode entirely
- D. Enable GeoIP blocklists
正解：B
解説：
Category-based policy blocks unsanctioned drives.
質問 # 57
A tenant wants to enforce different MFA settings per application. Where is the correct place to configure?
- A. In the IDP's application-specific conditional access policies
- B. At the Connector level using local user maps
- C. Within the ZTNA Admin Console under Global Authentication
- D. Inside DLP policy definitions
正解：A
解説：
MFA is handled by the IDP on an app basis; ZTNA references the resulting token.
質問 # 58
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