Q1 . Differnce between a modem and router?

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SOLUTION

Modem modulates and demodulates signals whereas the router is used to route the packets between networks or devices in a network.However these days modem and router are available as single network component.

Q2 . what is a network switch?

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SOLUTION

The switch is a device to which multiple devices will be connected and the data packets are transported to the one or more intentionedrecepient devices.

Q3 . What is a network bridge?

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SOLUTION

A network bridge is used to connect two different networks and make them into a same network.

For example we can use a bridge to connect two local area network(LAN) and make it one.

Q4 . What is a repeater?

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SOLUTION

It is device that retransmits the received signal so as to help in maintaining the signal strength for long distance communications.

Q5 . what are firewalls?

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SOLUTION

It is network device that acts as a wall filtering out the incoming and outgoing contents of network to avoid any malicious or harmful data from entering the network.

Q6 . What is an Ipv4 address?

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SOLUTION

IPV4 stands for Internet Protocol Version 4 address.It is a 32 bit address.

32 bits=4 bytes=1byte=8bits

8x4=32 bits

example:255.255.255.255

Q7 . What is an IPV6 address?

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SOLUTION

IPV6 stands for Internet Protocol Version 6 address.It is a 128 bit address.Example:0000:0000:0000:0000:0000:0000:0000:0000

Q8 . What is VPN?

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SOLUTION

VPN stands for Virtual Private Network.In this we can extend a private network to a group of users in which the users can share resources securely and connect to each other.

Q9 . what is circuit switching?

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SOLUTION

In this whenever a data has to be transmitted to a node there is a dedicated link created from source to destination.

Q10 . What is packet switching?

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SOLUTION

IN this type of communication the data are categorised into small packet or data modules that contain the destnation address and information to be transmitted.So the packets are routed from source to destination.

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