Information Technology [1 Mark Questions]

A hotspot is a site that offers Internet access over a WLAN via a router connected to a link from an Internet Service Provider (ISP).

Wi-Fi technology would be best suitable for her office to avoid cabling.

Only short range communication is possible using bluetooth.

Bluetooth is commonly used as a wireless technology in mobile phones and laptops.

A crossover cable is a special type of Ethernet cable specially designed for connecting two computers, whereas most Ethernet cables are designed to connect one computer to a router or a switch.

Optical fibre provides secure transmission as compared to twisted pair and co-axial cable. As, it is more immune to tapping than copper cables.

Communication channel for telephone line is twisted pair cable and for TV is co-axial cable.

We can use a networking device called repeater, regenerates the feeble signal and transmit it.

Wires are twisted to provide protection against crosstalk and noise.

In guided transmission media, cables (or wires) are used for communicating data while in unguided transmission, in place of cables, signals travel through air.

Internet is called a network of networks because it connects several large and all heterogeneous networks together into a bigger network.

Twisted pair and fibre optic cables are used for LAN connection.

Following are the three main types of computer networks, based upon the geographical area as follows:

• Local Area Network (LAN)
• Metropolitan Area Network (MAN)
• Wide Area Network (WAN)

Communication channel is responsible for carrying data in the form of signals from sender to receiver.

The five components will be involved in this computer network, since telephone lines will be used as communication channel.

• Sender
• Data communication device at sender’s end
• Communication channel
• Data communication device at receiver’s end
• Receiver

Telephones, mobiles, fax, Internet etc., are some examples of communication technology.

No, because only a meaningful exchange of information between two living beings is called communication.

Computer network is defined as a group of computers connected to each other by a link.