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Estate and Trust Record Management and Services. A large number of questions in the MongoDB C100DBA Certification Exam test is based on this document only. Hard and soft constraints. The C100DBA certification exam questions are given by the company on its site. Mongos, which is the primary command-line tool of MongoDB, is available only for Windows. Sharding, Replica Set, Authentication, Multiple command-line tools and tools for this purpose. Proper application of indexes will make your MongoDB C100DBA certification exam more interesting and the simpler. There is no set time period in which the MongoDB C100DBA exam is to be held. Automatically updated database. Products and services that relate to MongoDB and database management system. Administration of MongoDB and database management system. Products of plug-ins of MongoDB. Management plug-in of MongoDB.
MongoDB C100DBA certification exam is designed to test the skills and knowledge of database administrators who work with MongoDB. C100DBA exam is based on the latest version of MongoDB, version 4.4, and covers a range of topics including data modeling, performance tuning, security, and high availability. C100DBA exam is intended for individuals who have experience working with MongoDB in a production environment and are looking to validate their skills and knowledge.
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NEW QUESTION # 158
What are TWO functions of sharding?
Answer: C,E
Explanation:
Sharding is MongoDB ' s horizontal-scaling mechanism: it partitions a collection ' s data across multiple shards so a deployment can scale storage capacity and distribute query or write workload beyond the limits of one server. That directly supports deployments with very large datasets and high-throughput operations, making C correct. MongoDB also supports zone sharding, which associates ranges of shard-key values with selected shards. Zones can be used to keep particular data near a geographical region, satisfy locality requirements, or map data ranges to hardware tiers, so A is also correct. Option B overstates what sharding itself provides; cross-region consistency behavior depends on replication topology, read/write concerns, latency, and application design rather than simply enabling sharding. Option D describes a deployment that already fits comfortably in memory and meets performance goals, so sharding may add unnecessary operational complexity. Option E primarily describes replication: replica sets maintain redundant copies, provide elections, and improve availability. Production shards are themselves normally replica sets, but redundancy is a replication function rather than the defining purpose of sharding. Therefore the two functions represented here are geographic zone distribution and horizontal scale: A and C.
Study Guide reference/topic:Sharding Strategies and Scalable Deployments - horizontal scaling, large datasets, throughput, shard keys, and zone sharding.
NEW QUESTION # 159
What mongosh command connects to node-1.cluster1.mycompany.local on port 27017?
Answer: B
Explanation:
mongosh accepts a MongoDB host address in hostname:port form, so mongosh " node-1.cluster1.mycompany.
local:27017 " is the valid choice among the commands shown. A canonical URI form such as mongosh " mongodb://node-1.cluster1.mycompany.local:27017 " is also valid, and the connection can alternatively be expressed using --host together with --port. Option A uses an unsupported --hostname switch rather than the documented --host option. Option B invents a --connect flag that is not the standard mongosh interface.
Option C constructs an invalid string using an ampersand-style parameter rather than a MongoDB URI or a normal host:port target. Port 27017 is MongoDB ' s default server port, so it could often be omitted if the deployment uses the default, but explicitly including it is valid and removes ambiguity. In authenticated or TLS-enabled environments, the DBA would also supply credentials, authentication database, certificate settings, or a connection string carrying those parameters. For the simple host-and-port requirement in the question, option D is correct.
Study Guide reference/topic:Security, Networking, and Encryption - mongosh connectivity, host/port addressing, and connection options.
NEW QUESTION # 160
You are in a sharded cluster. What will you do prior to initiating backup in sharded cluster?
Answer: D
NEW QUESTION # 161
Consider that the posts collection contains an array called ratings which contains ratings given to the post by various users in the following format:
Which of the following query will return all the documents where the ratings array contains elements that in some combination satisfy the query conditions?
Answer: A
NEW QUESTION # 162
Which of the following commands finds all the documents in the posts collection with post timestamp field as null?
Answer: B
NEW QUESTION # 163
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