Components and NETWORKS

Which of the following is a component of a physical computing system?

• User interface software

• Central processing unit (CPU)

• Virtual machine

• Cloud server

What is the function of a power supply unit (PSU) in a computer system?

• Store system files

• Manage cooling

• Convert mains electricity into usable power for components

• Transmit data wirelessly

Which device allows multiple computers to connect and share network resources within a local area network (LAN)?

• Router

• Switch

• Firewall

• Hub

Which type of network covers the widest geographical area?

• LAN

• PAN

• MAN

• WAN

What is a key function of the Internet of Things (IoT)?

• To connect physical devices to exchange data automatically

• To store data on magnetic disks

• To provide wired-only communication

• To create data backups manually

Which of the following is an example of an IoT device?

• Desktop computer

• Smart thermostat

• USB flash drive

• Server rack

What is the main purpose of network protocols?

• To define rules for data communication

• To increase hardware performance

• To encrypt passwords

• To control physical access to buildings

Which protocol is used to transfer files over the Internet?

• SMTP

• FTP

• POP3

• IMAP

Which protocol secures web traffic through encryption?

• HTTP

• HTTPS

• FTP

• DNS

In the OSI model, which layer is responsible for logical addressing?

• Physical

• Network

• Data Link

• Application