CITM-001 Exam Dumps - Certified Information Technology Manager (CITM)

Rotational delay is the time it takes for the desired sector of the disk to rotate under the read-write head after the head has been positioned at the correct track. It depends on the rotational speed of the disk and the position of the sector relative to the head. It is one of the components of data access delay, along with seek time, transmission delay, and processing delay. References: Delays in Computer Network - GeeksforGeeks, Access time - Wikipedia

Managerial control decisions are those that involve measuring and correcting the performance of activities of subordinates to ensure that the enterprise objectives and plans are being accomplished. Managerial control decisions fall between operational and strategic planning because they are concerned with both executing the strategy and tracking its progress. Operational control decisions are those that focus on the efficiency and effectiveness of specific processes, tasks, and functions. Strategic control decisions are those that evaluate the alignment of the strategy with the external and internal environment, and make adjustments if necessary. References: Managerial Control: Definition, Features, Scope, and Process, Types and Levels of Control – Principles of Management, The Control Function of Management - MIT Sloan Management Review

The conceptual level is a high-level description of the data and its relationships in the database, without specifying how the data is physically stored or implemented. It defines the main entities, attributes, and constraints for the entire database, and is independent of any specific database management system or application. The conceptual level is also known as the logical level, and it is usually represented by an entity-relationship diagram (ERD). References: Conceptual schema - Wikipedia, Navigating the Three Levels of Database Design: Conceptual, Logical, and Physical

Structured design and object-oriented design are two common approaches to design a system. Structured design is a method of breaking down a system into smaller and simpler modules, which can be independently created and tested. Structured design follows a top-down approach, where the system is divided into sub-systems, and then into modules, until the desired level of detail is reached. Structured design is suitable for systems that have well-defined inputs and outputs, and a clear hierarchy of functions. Object-oriented design is a method of modeling a system as a collection of objects, which have attributes and behaviors. Object-oriented design follows a bottom-up approach, where the system is built from reusable and interchangeable components, called classes. Object-oriented design is suitable for systems that have complex interactions, dynamic behavior, and multiple inheritance. Functional design and organizational design are not considered to design a system, but rather to describe the system’s purpose and structure. Functional design is a process of defining the functions and processes that the system performs, and how they relate to each other. Functional design focuses on the what and why of the system, rather than the how. Organizational design is a process of defining the roles and responsibilities of the people and units involved in the system, and how they communicate and coordinate with each other. Organizational design focuses on the who and where of the system, rather than the how. References: Structured Design - an overview | ScienceDirect Topics, Object-Oriented Design - an overview | ScienceDirect Topics, Functional Design - an overview | ScienceDirect Topics, [Organizational Design - an overview | ScienceDirect Topics]

evelopment, testing, installation, and maintenance12 The installation stage is the sixth and final stage of the SDLC, where the system is deployed to the target environment and made available to the end users. This stage involves activities such as hardware and software installation, configuration, data migration, user training, and documentation. The installation stage ensures that the system is functional, secure, and meets the user expectations34 References: 1: Systems development life cycle - Wikipedia 2: System Design Life Cycle | SDLC (Design) - GeeksforGeeks 3: System Design Life Cycle | SDLC (Design) 4: System Development Life Cycle - GeeksforGeeks

 System analysis is the process of understanding problems and needs and arriving at solutions that meet them. It involves identifying, defining, and specifying the requirements of a system, as well as designing, developing, testing, and implementing the system. According to Wikipedia1, system analysis can be broken into five phases: scope definition, problem analysis, requirements analysis, logical design, and physical design. However, according to MasterStart2, there are seven stages of system development life cycle (SDLC), which include planning, requirements analysis, designing, development and testing, implementation, documentation, and evaluation. Therefore, depending on the perspective and the methodology, system analysis can involve three to seven stages, but the most common number is three: requirements analysis, logical design, and physical design. References: Wikipedia; MasterStart

A byte is the smallest unit of data storage that consists of eight bits. A bit is a binary digit that can have two values: 0 or 1. A byte can store one character, such as a letter, a number, or a symbol. An octet is another name for a byte, but it is not commonly used. A character is a symbol that represents a letter, a digit, or a punctuation mark, but it is not a unit of data storage. A field is a group of bytes that stores a specific type of data, such as a name, a date, or a number, but it is not the smallest unit of data storage. References: Data Storage Units of Measurement Table, What are the units of measurements for data storage?, Data Storage Units

A data flow diagram (DFD) is a graphical representation of data flow in any system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination1. Data flow: data flows indicate the data movement between external entities, processes, and the data store. They’re represented as arrows in the DFD with a short text label2. Therefore, the symbol that represents flow of data in DFD is arrow. References: 1: What is a Data Flow Diagram | Lucidchart 2: What Are Data Flow Diagrams? | Baeldung on Computer Science