Communication & Networks 1.0

Communications system is a collection of electronic systems that exchange data from one location to another location. Which of these are NOT the element of a communications system?

• Sending and receiving devices (exp: smartphone, speakerS)

• Cable and wires (exp: coaxial, fibre-optic cable)

• Data transmission specifications(exp: rules on data transfering)

• Communication device (clue: involve with packages)

Answer explanation

Cables and wires is not basic element of a communication system!

These are actually the examples of COMMUNCATION CHANNELS :D

In fact, communication system may be transferred via wired/ wireless channel.

Network is a collection of connected computers to each other via cables or wireless connections

• True

• False

Answer explanation

Do you know?

Advantages of having a network is to..

- share file
- share hardware
- share software
to facilitate communications

X is an abbreviation of modulator-demodulator.

A sending X converts the data received from the computer into analog signals, and the receiving X converts signals back to digital data. Speed of X is called "data transfer rate"

What is X?

Select correct examples of using a wireless connection to transmit data through the air.

(You can select more than one answer.)

• Ahmad used remote control to turn on the air conditioner

• Humaira surf the internet using IIUM student Wifi

• Hamas throw bombs by the calculation of physic parabola manually

• Aniq wears earbud that are connected with his phone to listen Palestine nasyeed

Answer explanation

Wireless connections is another channel of communication other than physical connections using wires and cables..

- Ahmad used remote control to turn on the air conditioner --> Infrared technology
- Humaira surf the internet using IIUM student Wifi --> Wireless Fidelity Wi-Fi technology
- Aniq wears earbud that are connected with his phone to listen Palestine nasyeed --> Bluetooth technology

The example of Hamas is not the application of wireless connections.

- Other examples are WiMax technology, Cellular radio technology, LTE technology, Microwave technology, Satellite technology

Which of these is TRUE on NETWORK?

i. Node is a devices that are connected to a network

ii. Client is a node that request or uses resources in network

iii. Server does not provide specific tasks in a network

iv. Network administrator is the one who manage, coordinate, and maintain the network

• i and ii

• i, ii and iii

• i and iv

• i, ii and iv

Which type of network allow a printer from 3rd floor of Mahallah Umaimah to send instruction to print a document to a printer on the ground floor?

• LAN

• MAN

• WLAN

• PAN

Which type of network allow short distance communication using bluetooth?

(Just write the nickname of the network type such as LAN/WLAN)

Abu Ubaidah went hiking at Kinabalu Mount, and he sent a message to his mother in Turkey.

What type of network was involved in the message transfer?

• LAN

• MAN

• WLAN

• WAN

Answer explanation

WAN involves a very large geographical area. comprises MAN and LANs. The largest WAN is internet connecting people from all over the world.

Due to many bad hackers that exist nowadays, a team of Zionist hackers target to hack Malaysians.

One way to secure your computer and data is to have ____________ that will monitor and control incoming and outgoing network traffics

• VPN

• Firewall

• Kapersky Anti Virus

• VPN

Answer explanation

Firewalls is the answer!

The firewall will monitor and control incoming and outgoing network traffics based on rules set or specified by the network administrator or owner of the computer

- IDS analyzes traffic, detects it, and alerts the administrator
- VPN involves on credential key/ authorization codes that secure the privately-owned network

Perodua has a system that can share informations, data and inquiries with it's suppliers of tyres, paints, engines and other part of car spare part.

This is an example of a common organizational networks named _____________

• Internet

• Intranet

• Extranet

• Virtual Private Net

Answer explanation

2 types of Organizational Network are:
Intranet and Extranet

Intranet is a privately owned within one organization..

While Extranet is extra! privately-owned network that connect more than one organization (usually because of business)