What is modem and its functions?

What is modem and its functions?

Modem is short for “Modulator-Demodulator.” It is a hardware component that allows a computer or another device, such as a router or switch, to connect to the Internet. It converts or “modulates” an analog signal from a telephone or cable wire to digital data (1s and 0s) that a computer can recognize.

Why are modems used in communication?

Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying massages across phone lines.

What is the main function of modem?

The word “modem” is derived from the term “modulator-demodulator.” The essential functions of a modem are to modulate an analog carrier signal to carry digital information; and to demodulate a similar signal so as to decode the digital information from the analog carrier signal.

What is modem explain with diagram?

Modem is an abbreviation for Modulator – Demodulator. Modems are used for data transfer from one computer network to another computer network through telephone lines. The computer network works in digital mode, while analog technology is used for carrying messages across phone lines.

What are the two types of modem?

There are three types of modems: cable, digital subscriber line (DSL) and dial-up. A cable modem uses coaxial cables that connect to the back of the modem and the bolt-like outlet in your wall or on your cable box. This type of modem delivers high speed internet to your device.

What are the advantages of modem?

Advantages of the modem:

• More useful in connecting LAN with the internet.
• Speed depends on the cost.
• Slow speed when compared to the hub.
• A limited number of a system can be connected.
• A modem is most probably widely used in data communication roadway.
• A modem converts that the digital signal into an analog signal.

What are two types of modem?

What are the two functions of a router?

What are two functions of a router? (Choose two.)

• It controls the flow of data via the use of Layer 2 addresses.
• It provides segmentation at Layer 2.
• A router connects multiple IP networks.
• It determines the best path to send packets.
• It builds a routing table based on ARP requests.

What is the working principle of modem?

A modem is typically used to send digital data over a phone line. The sending modem modulates the data into a signal that is compatible with the phone line, and the receiving modem demodulates the signal back into digital data. Wireless modems convert digital data into radio signals and back.

What is the purpose of a modem and why is it needed?

Modems bring the Internet to your home A modem is a device that connects your home, usually through a coax cable connection, to your Internet service provider (ISP), like Xfinity. The modem takes signals from your ISP and translates them into signals your local devices can use, and vice versa.

What is a modem and what does it do?

Modem is short for Modulator Demodulator . It’s an electronic device used to access the Internet that modulates carrier waves to encode information to be transmitted and also demodulates incoming carrier waves to decode the information they carry.

What is the main purpose of a modem?

The modem performs the modulation and demodulation function in between your networking devices such as a computer or router and the telephone line. The main purpose of using a modem is that it connects the networking system or device to the Internet service provider (ISP) and we can get access to the Internet only by using a modem.

What is modem and its benefits?

What is Modem and its benefits. Modem is actually one of the most important hardware devices used in the computer especially for the purpose of networking of the internet. Modems are used to modulate signals of analog types so as to be able to encode the digital information from it. Modems are also used for demodulation of the signals so as to decode the information transmitted.

What is a modem best defined as?

A modem is best defined as. A modem is best defined as a device that modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information. Log in for more information.