1st year Computer Science

Which of the following devices is essential for establishing a network connection?

• Modem

• Keyboard

• Webcam

• Projector

William and Maya are having a conversation using walkie-talkies. Which mode of communication allows data to be transmitted in both directions but only one direction at a time?

• Simplex

• Half-Duplex

• Full-Duplex

• Duplex

Which of the following is an example of guided media?

• Radio waves

• Fiber optic cable

• Infrared

• Bluetooth

Which device is used to amplify and regenerate signals in a network?

• Switch

• Hub

• Repeater

• Router

In which topology is each device connected to a central hub?

• Bus

• Ring

• Star

• Mesh

Which layer of the OSI model is responsible for end-to-end communication and error recovery?

• Physical Layer

• Data Link Layer

• Transport Layer

• Network Layer

Hannah is setting up a new internet connection for her home office. Which of the following is a characteristic of a wireless network?

• Requires physical cables

• Uses radio waves for communication

• Limited to wired connections

• Only works in small areas

What is the primary difference between data and information?

• Data is processed, information is raw

• Data is raw, information is processed

• Data is always numeric, information is textual

• Data is only stored, information is displayed

Which of the following is a primary function of a file management system?

• Hardware configuration

• Data encryption

• File organization and retrieval

• Virus scanning

Which of the following is a feature of a Database Management System?

• Manual data entry

• Data redundancy

• Data abstraction

• Lack of data security