Information Technology MCQ

Bits per second is the unit used to measure the data through modem.

 All are communication channel but modem is a dev that convert analog signals to digital signals or vice-versa

 Modem is a device that enables computers and other equipment to communicate with each other using telephone lines.

 Modem converts digital signals to analog signals or analog signals to digital signals for the purpose of transmitting data over telephone lines or vice-versa.

 Bluetooth is not required for Wi-Fi connection.

 RJ-45 most commonly used to connect computers onto Ethernet-based local area network.

 Optical fibres are made up of thin strands of glass like material.

 Except optical fibre, all are wireless transmission media.

 Co-axial cable consists of two conductors which are parallel to each other, i.e. inner and outer conductor.

In guided media, signals are guided through cables.

 Across the continents, computers can be connected using WAN only.

 LANs are not public network and hence data can be shared among the computers of the organisation owning that LAN cannot share data across the world.

 Using LAN, we can connect computers within a building only.

 Computer connected with LAN can share information or peripheral devices.