Std XII Computer Science: Unit 2 - Computer Networks

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What is the primary function of a modem?

Manage network traffic and prevent data collisions

Provide security and encryption for data transfer

Convert digital data into analog data for transmission (correct)

Enhance the Wi-Fi signal strength

Which network device is used to regenerate and retransmit signals to extend the reach of a network?

Router

Repeater (correct)

Bridge

Switch

What is the purpose of a bridge in a network?

Broadcast data packets to all devices in the network

Provide IP addresses to devices in the network

Boost the signal strength for wireless devices

Connect multiple networks together and manage traffic between them (correct)

Which network device is responsible for determining the best path for data packets to reach their destination?

Router Signup and view all the answers

In a network, what does a repeater help overcome?

Signal attenuation issues Signup and view all the answers

Which network device is primarily responsible for determining which devices can communicate within the same network?

Switch Signup and view all the answers

What is the primary purpose of a network repeater?

To regenerate and extend the distance of a signal Signup and view all the answers

How does a bridge differ from a router in terms of network connectivity?

A bridge connects networks with the same protocol, while a router connects networks with different protocols Signup and view all the answers

What is the primary factor that causes signal attenuation in physical media like Ethernet or WiFi?

Energy dissipated in conductor resistance and dielectric losses Signup and view all the answers

What is the main advantage of a router over a hub or switch?

Routers can connect networks with different protocols Signup and view all the answers

How does a bridge determine which packets to allow across the network?

By checking the physical destination address of the packet Signup and view all the answers

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

To connect different types of networks Signup and view all the answers

What is the main purpose of a routing table in a router?

To calculate the shortest path for data packets to reach their destination Signup and view all the answers

What is the primary function of a network gateway?

To establish an intelligent connection between dissimilar networks Signup and view all the answers

Which of the following is a characteristic of a router?

It can provide connectivity between enterprises and the Internet Signup and view all the answers

What is the role of a proxy server in a network gateway?

To appear as a server without actually being one Signup and view all the answers

What is the purpose of a firewall in a network gateway?

To prevent unauthorized access to or from a private network Signup and view all the answers

Which of the following devices is responsible for amplifying and retransmitting a signal to overcome signal attenuation?

Repeater Signup and view all the answers

Std XII Computer Science: Unit 2 - Computer Networks - Network Devices

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