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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Database Management and Maintenance | 25% | - Routine maintenance processes and tasks - Documentation and configuration management - Data lifecycle management - Performance monitoring and reporting |
| Topic 2: Database Fundamentals | 24% | - Database structure types and characteristics - SQL development, modification, and execution - Scripting methods and environments - Impact of programming on database operations |
| Topic 3: Data and Database Security | 23% | - Attack types and defense measures - Governance, risk, and compliance - Infrastructure security and threat mitigation - Authentication, authorization, and access control - Data security concepts and techniques |
| Topic 4: Business Continuity | 12% | - Disaster recovery planning and strategies - RTO and RPO definitions and application - High availability and fault tolerance - Backup and restoration methods |
| Topic 5: Database Deployment | 16% | - Database planning and design considerations - Migration and integration strategies - Implementation, testing, and deployment phases |
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NEW QUESTION # 114
A database administrator is new to a company and wants to create a document that illustrates the interaction between tables. Which of the following should the administrator create?
Answer: C
Explanation:
The document that the administrator should create to illustrate the interaction between tables is an entity relationship diagram. An entity relationship diagram (ERD) is a graphical representation of the entities (tables), attributes (columns), and relationships (constraints) in a database. An ERD helps the administrator to visualize the structure and design of the database, as well as the dependencies and associations among the tables. The other options are either different types of documents or not related to the interaction between tables. For example, a troubleshooting guide is a document that provides instructions on how to solve common problems or errors in a database; a data dictionary is a document that describes the metadata (information about data) of a database; a database reference manual is a document that provides information on how to use or operate a database. References: CompTIA DataSys+ Course Outline, Domain 2.0 Database Deployment, Objective 2.2 Given a scenario, create database objects using scripting and programming languages.
NEW QUESTION # 115
Which of the following services is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network?
Answer: B
Explanation:
The service that is responsible for assigning, managing, and reclaiming IP addresses on a TCP/IP-based network is DHCP. DHCP, or Dynamic Host Configuration Protocol, is a service that automatically assigns IP addresses and other network configuration parameters, such as subnet mask, default gateway, DNS server, etc., to computers or devices on a network. DHCP helps simplify the administration and management of IP addresses on a network, as well as avoid conflicts or errors caused by manual or duplicate assignments. DHCP also allows computers or devices to release or renew their IP addresses when they join or leave the network. The other options are either different services or not related to IP addresses at all. For example, DNS, or Domain Name System, is a service that translates domain names into IP addresses and vice versa; LDAP, or Lightweight Directory Access Protocol, is a service that provides access to directory information such as users, groups, or devices on a network; ISMTP is not a valid acronym or service.
NEW QUESTION # 116
A database administrator is concerned about transactions in case the system fails. Which of the following properties addresses this concern?
Answer: D
Explanation:
The property that addresses this concern is durability. Durability is one of the four properties (ACID) that ensure reliable transactions in a database system. Durability means that once a transaction has been committed, its effects are permanent and will not be lost in case of system failure, power outage, crash, etc. Durability can be achieved by using techniques such as write-ahead logging, checkpoints, backup and recovery, etc. The other options are either not related or not specific to this concern. For example, isolation means that concurrent transactions do not interfere with each other and produce consistent results; atomicity means that a transaction is either executed as a whole or not at all; consistency means that a transaction preserves the validity and integrity of the data. Reference: CompTIA DataSys+ Course Outline, Domain 1.0 Database Fundamentals, Objective 1.3 Given a scenario, identify common database issues.
NEW QUESTION # 117
A database administrator needs to ensure database backups are occurring on a daily basis and at scheduled times. Which of the following actions should the administrator take?
Answer: C
Explanation:
The action that the administrator should take is to review the server logs for entries. Server logs are files that record the events and activities that occur on a server, such as database backups, errors, warnings, or failures. By reviewing the server logs, the administrator can verify that the database backups are occurring on a daily basis and at scheduled times, and also identify any issues or anomalies that may affect the backup process or the backup quality. The other options are either not relevant or not sufficient for this task. For example, querying the database to observe entries may not show the backup status or frequency, checking the database schema may not reflect the backup schedule or policy, and reviewing the backup media may not indicate the backup time or duration.
NEW QUESTION # 118
Which of the following is the preferred data structure for storing hierarchical data models?
Answer: B
Explanation:
A tree data structure is ideal for representing hierarchical data models, as it organizes data in parent-child relationships.
NEW QUESTION # 119
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