BONUS!!! PassTIP C100DBA 시험 문제집 전체 버전을 무료로 다운로드하세요: https://drive.google.com/open?id=13B-K9v1LhExR1h7pETj336punKkZA21N
불과 1,2년전만 해도 MongoDB C100DBA덤프를 결제하시면 수동으로 메일로 보내드리기에 공휴일에 결제하시면 덤프를 보내드릴수 없어 고객님께 페를 끼쳐드렸습니다. 하지만 지금은 시스템이 업그레이드되어MongoDB C100DBA덤프를 결제하시면 바로 사이트에서 다운받을수 있습니다. PassTIP는 가면갈수록 고객님께 편리를 드릴수 있도록 나날이 완벽해질것입니다.
| Section | Weight | Objectives |
|---|---|---|
| Security and Access Control | 15% | - Role-based access control - Authentication mechanisms - Encryption, auditing, and security best practices |
| Replication and High Availability | 15% | - Failover, elections, read/write concern - Deployment and maintenance of replica sets - Replica set architecture and components |
| Sharding and Scalability | 10% | - Shard keys, chunk management, balancing - Sharded cluster architecture - Query routing and cluster operations |
| Backup, Recovery and Maintenance | 10% | - Restore procedures and disaster recovery - Logical and physical backup methods - Data consistency and integrity checks |
| MongoDB Architecture and Deployment | 20% | - Core concepts, JSON/BSON, data model - Storage engines and server management - Installation and configuration |
| Monitoring, Performance and Troubleshooting | 10% | - Performance tuning and optimization - Monitoring tools and metrics - Diagnostics and resolving common issues |
| CRUD Operations and Indexing | 20% | - Create, Read, Update, Delete operations - Query optimization and aggregation - Index types, creation, and management |
경쟁율이 심한 IT시대에MongoDB C100DBA인증시험을 패스함으로 IT업계 관련 직종에 종사하고자 하는 분들에게는 아주 큰 가산점이 될수 있고 자신만의 위치를 보장할수 있으며 더욱이는 한층 업된 삶을 누릴수 있을수도 있습니다. MongoDB C100DBA시험을 가장 쉽게 합격하는 방법이 PassTIP의MongoDB C100DBA 덤프를 마스터한느것입니다.
질문 # 121
What stage of the Winning Plan in an Explain Result identifies the Index Key for the query pattern?
정답：D
설명：
When MongoDB ' s winning query plan uses a B-tree index, the plan includes an IXSCAN stage. That stage contains the index-specific information a DBA needs to identify how the query is being serviced, including the key pattern, index name, traversal direction, and index bounds. For example, keyPattern can show a compound definition such as { status: 1, createdAt: -1 }, making it straightforward to confirm which indexed keys participate in the chosen plan. A FETCH stage indicates that MongoDB is retrieving full documents, often after an index has produced candidate record identifiers; the fetch stage itself does not identify the index key. A COLLSCAN stage means MongoDB is scanning the collection and therefore is not using a normal index scan for the predicate. GROUP is unrelated to index selection. Effective DBA query analysis usually involves inspecting both queryPlanner.winningPlan and execution statistics such as totalKeysExamined, totalDocsExamined, and nReturned. But for the narrow question of which stage exposes the index key used by the winning plan, IXSCAN is the correct answer. Therefore option C is correct.
Study Guide reference/topic:Indexing and Query Optimization - explain output, winning plans, IXSCAN, key patterns, and index bounds.
질문 # 122
Which of the following about Capped Collections is correct?
정답：C
질문 # 123
We can insert multiple documents in bulk using which of the following operations:
정답：B
질문 # 124
Which TWO indicators should an administrator keep an eye on to determine if the storage capacity is nearing its limit?
정답：A,C
설명：
The most direct evidence that storage capacity is approaching exhaustion is high filesystem utilization and explicit operating-system errors showing that no space remains. Sustained disk utilization above 90% is a practical warning threshold because the deployment has little headroom for database growth, index builds, temporary files, journal activity, or operational spikes. The errno:28 No space left on device message is even stronger evidence: the operating system rejected a write because the relevant filesystem could not allocate additional space. The other choices can correlate with workload growth but do not specifically prove a capacity problem. Query execution time can increase because of poor indexes, cache misses, lock or ticket contention, or CPU pressure. A rising document count says nothing about remaining free space without knowing document size, index size, and volume capacity. Low read/write ticket availability reflects storage- engine concurrency pressure rather than filesystem capacity. Administrators should therefore monitor disk- used and disk-free metrics, alert well before full utilization, and investigate any ENOSPC-style log events immediately. B and D are the two storage-capacity indicators.
Study Guide reference/topic:Performance Monitoring and Tuning - disk capacity, storage metrics, alerts, and diagnostic logs.
질문 # 125
Given the following query:
db.load.find({
_id: { $lte: 1000 },
rnd: 1234,
date: { $gte: ISODate( " 2023-01-01 " ) }
}).sort({ date: -1 })
In a compound index that best supports this query, what field should be first field?
정답：B
설명：
The rnd field should lead the compound index because it is the query ' s equality predicate. MongoDB ' s common compound-index design rule is Equality, Sort, Range (ESR): fields tested for exact equality are typically placed first, followed by fields used for sorting and then range predicates, subject to workload- specific selectivity considerations. Here, rnd: 1234 is an equality condition. _id: { $lte: 1000 } is a range condition, and date: { $gte: ... } is also a range condition while the query additionally sorts on date. Leading with rnd sharply narrows the index region that must be scanned before MongoDB handles the sort/range dimensions. Starting with _id or date would place a range-oriented key ahead of the exact-match predicate and generally reduce the efficiency of index bounds for this query shape. The complete optimal key pattern may depend on whether avoiding the sort or maximizing range selectivity matters most, but the question asks only for the first field. Under ESR guidance, that first field is rnd, so option B is correct.
Study Guide reference/topic:Indexing and Query Optimization - compound indexes, selectivity, and the Equality-Sort-Range guideline.
질문 # 126
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PassTIP에서 최고최신버전의MongoDB인증C100DBA시험덤프 즉 문제와 답을 받으실 수 있습니다. 빨리 소지한다면 좋겠죠. 그래야 여러분은 빨리 한번에MongoDB인증C100DBA시험을 패스하실 수 있습니다.MongoDB인증C100DBA관련 최고의 자료는 현재까지는PassTIP덤프가 최고라고 자신 있습니다.
C100DBA시험패스 가능한 인증공부자료: https://www.passtip.net/C100DBA-pass-exam.html
그 외, PassTIP C100DBA 시험 문제집 일부가 지금은 무료입니다: https://drive.google.com/open?id=13B-K9v1LhExR1h7pETj336punKkZA21N