Network Devices and Protocols Flashcard

Front

What does a modem do in a network?

Back

Converts digital data to analog signals

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.

Front

What is the main function of an Ethernet card?

Back

To connect devices to a wired network

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.

Front

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?

Back

RJ45

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).

Front

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

Back

Switch

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.

Front

What device can Sneha use to improve the coverage of her wireless network in her large house?

Back

Extend the range of a network

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.

Front

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

Back

Switch

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.

Front

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

Back

Router

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.

Front

What is the role of a gateway in a network?

Back

To connect different networks and route traffic

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.

Front

A WiFi card allows Myra's laptop to:

Back

Connect to wireless networks

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.

Front

Which of the following is NOT a function of a modem? Converting digital signals to analog signals, Allowing internet access over telephone lines, Converting analog signals to digital signals

Back

Providing wireless connectivity

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.