Ulangan Semester Kelas XII TKJ

What is a computer network?

• A computer network is a group of computers that are not connected to each other.

• A computer network is a software program that allows you to browse the internet.

• A computer network is a collection of interconnected devices that facilitate communication and data sharing.

• A computer network is a type of computer virus that spreads through connected devices.

What are the advantages of using a computer network?

• Sharing resources and files, facilitating communication and collaboration, centralizing data storage and backup, enabling remote access and mobility, and improving efficiency and productivity.

• Increasing security risks, slowing down internet speed, limiting privacy and confidentiality

What is an operating system?

• A software that manages computer hardware and software resources and provides common services for computer programs.

• A programming language used to write computer programs.

• A device used to control the computer mouse.

• A type of computer virus.

What are the functions of an operating system?

• Providing security for computer hardware and software resources

• Managing computer hardware and software resources, providing a user interface, facilitating communication between software and hardware, managing files and directories, and controlling and coordinating the execution of programs.

• Creating and editing documents and spreadsheets

• Managing internet connectivity

What is a database management system?

• A database management system is a hardware device used to store and retrieve data.

• A database management system is a programming language used to query databases.

• A database management system is a network protocol used to transfer data between databases.

• A database management system (DBMS) is a software that allows users to create, manipulate, and manage databases.

What are the advantages of using a database management system?

• A database management system (DBMS) provides several advantages, including data integrity, data security, data consistency, data sharing, data independence, and efficient data access and retrieval.

• Faster data processing and retrieval

• Reduced data redundancy and inconsistency

• Improved data organization and storage

What is a LAN?

• A LAN is a software program used to manage network connections.

• A LAN is a local area network that connects computers and devices within a limited area.

• A LAN is a type of computer virus that spreads through local networks.

• A LAN is a wide area network that connects computers and devices across a large geographical area.

What is the purpose of a router in a computer network?

• The purpose of a router in a computer network is to forward data packets between networks.

• The purpose of a router in a computer network is to encrypt data packets between networks.

• The purpose of a router in a computer network is to store data packets between networks.

• The purpose of a router in a computer network is to amplify data packets between networks.

What is virtual memory in an operating system?

• Virtual memory is a technique used to increase the speed of data transfer in an operating system.

• Virtual memory is a memory management technique used by operating systems to create an illusion of a larger main memory than physically available.

• Virtual memory is a storage device used to store files in an operating system.

• Virtual memory is a type of RAM used in gaming computers.

What are the different types of database models?

• flat, distributed, centralized

• hierarchical, network, relational, object-oriented, and object-relational