Network Devices and Protocols Quiz

What does a modem do in a network?

• Routes data between networks

• Converts digital data to analog signals

• Amplifies signal strength

• Connects devices wirelessly

Answer explanation

A modem converts digital data from a computer into analog signals for transmission over phone lines and vice versa. This function is essential for connecting to the internet, making 'Converts digital data to analog signals' the correct choice.

What is the main function of an Ethernet card?

• To provide wireless internet access

• To connect devices to a wired network

• To amplify network signals

• To convert IP addresses

Answer explanation

The main function of an Ethernet card is to connect devices to a wired network, allowing for data transmission over cables. This is essential for establishing stable and high-speed network connections.

Eesha is setting up her home office and needs to connect her computer to the router. Which type of connector should she use for her Ethernet cable?

• RJ11

• RJ45

• HDMI

• VGA

Answer explanation

Eesha should use an RJ45 connector for her Ethernet cable, as it is specifically designed for network connections, unlike RJ11 (used for phone lines), HDMI, and VGA (used for video).

Which network device forwards data to the correct device in a network?

• Hub

• Switch

• Modem

• Repeater

Answer explanation

A switch is a network device that intelligently forwards data to the correct device based on MAC addresses, unlike a hub which broadcasts to all devices. Therefore, the correct answer is a switch.

Sneha is trying to set up a wireless network in her large house, but she finds that the signal does not reach the farthest rooms. She wonders what device she can use to improve the coverage of her network.

• Connect different networks

• Extend the range of a network

• Route data to the correct device

• Encrypt data packets

Answer explanation

To improve the coverage of her wireless network, Sneha should use a device that can extend the range of the network, allowing the signal to reach the farthest rooms. This is the most effective solution for her issue.

Which device connects different network segments in a LAN and is more efficient than a hub?

• Modem

• Router

• Switch

• Gateway

Answer explanation

A switch connects different network segments in a LAN by intelligently directing data to specific devices, making it more efficient than a hub, which broadcasts data to all devices.

Which device is used to connect two different networks and routes traffic between them?

• Switch

• Modem

• Router

• Hub

Answer explanation

A router is the device that connects two different networks and routes traffic between them. Unlike switches and hubs, which operate within a single network, routers manage data between multiple networks.

What is the role of a gateway in a network?

• To connect multiple devices in a network

• To connect different networks and route traffic

• To amplify the signal

• To manage IP addresses

Answer explanation

A gateway connects different networks and routes traffic between them, making it essential for communication across diverse network architectures. This distinguishes it from devices that merely connect multiple devices or manage IP addresses.

Myra is trying to connect her laptop to the internet at a coffee shop. A WiFi card allows her device to:

• Connect via Bluetooth

• Connect to wired networks

• Connect to wireless networks

• Manage the DNS server

Answer explanation

A WiFi card enables devices to connect to wireless networks, allowing Myra to access the internet at the coffee shop. The other options do not pertain to the function of a WiFi card.

Which of the following is NOT a function of a modem?

• Converting digital signals to analog signals

• Providing wireless connectivity

• Allowing internet access over telephone lines

• Converting analog signals to digital signals

Answer explanation

A modem primarily converts digital signals to analog and vice versa, enabling internet access over telephone lines. It does not provide wireless connectivity, which is typically the function of a router.