Communication System

Signals that are continuous electronic waves

• analog

• digital

• backbone

• mesh

Match the following

• connectivity

• a concept related to using computer networks to link people and resources

• process of converting from digital to analog

• a term relating to sending data to a satellite

• rules that coordinate the sending receiving devices of how the message are sent across com channel

• modulation

• WiMAX

• extends the range of Wi-Fi networks using microwave connections

• uplink

• data transmission specification

Twisted pair, coaxial cable and fibre optic cable are examples of

• Wired Media

• Wireless Media

• Both wired and wireless

• None of the above

How does fibre-optic cable transmit data across the medium

• using light wave signal

• using bluetooth

• using pulses of light

• using high- frequency radio wave

Which of the following is NOT part of communication system basic elements

• communication channel

• internet service provider

• connection devices

• sending & receiving devices

​ (a)   is short for modulator-demodulator. To download a complete full-length motion picture (700 MB) on a 1.5-Mbps modem would take about 1 hour. Mbps stands for ​ (b)   ,and this speed is called ​ (c)   . A ​ (d)   modem uses standard phone lines to create a high-speed connection directly to your phone company’s offices. Almost all computers have a built-in ​ (e)   modem.

• Modem
• megabits per second
• transfer rate
• DSL
• wireless

Describe data transmission factors, including bandwidth and protocols

Answer explanation

data transmission protocols are rules and procedures that coordinate the sending and receiving device - also affected by bandwidth (capacity of communication channel - how much information can move across the communication channel in a given amount of time)

Which of the followings is NOT a feature of TCP/IP protocol

• Using IP address for identification of devices

• Using Domain Name Server for converting text-based address to IP address

• using Documentation to break down messages for easier transfer through the network

• most widely used protocol

Briefly explain

>> https

>> packetization

Answer explanation

Https stands for hypertext transfer protocol secure - method used to protect the transfer of sensitive data.

Packetization is where message is broken into small parts called packets (key term) so easier to transmit over Internet through various interconnected networks; allows message to be reassembled at destination

What is the purpose of a router in a network?

• To connect multiple devices within a local area network

• To forward data packets between computer networks

• To provide wireless internet access

• To encrypt data for secure transmission