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Flashcards in E-comm devices Deck (21):

What are static web pages?

A static page is a basic HTML page that remains the same for all users until the developer changes the content by editing the code behind the page.


What are dynamic web pages?

In dynamic web pages, the appearance of a page or part of a page changes without the whole page being reloaded


Message boards and discussion forums

Message boards are used to discuss topics relevant to a certain group. A user posts a message, which everyone can see, someone else posts a reply and a discussion builds up.



News feeds are a way of collating and distributing news from different sources. They allow users to create their own personal news pages, containing only the topics they are interested in.



A blog or a web-log is a website that someone is writing publicly, reflecting her/his own views and interests.



You may also need additional software to your browser, called plug-ins, when you want to access sound, video, pdf and PowerPoint files. The browser plug-in will interpret files, other than webpages, so you can see and/or hear them.


Email lists?

An email list or mailing list refers to a list of names and email addresses. It can be used when sending information by email to many people at the same time.



Try to ensure that the electronic information you produce is accessible to the widest possible audience. The key is to make the presentation of your content flexible, so that users can change it to suit their own needs.



A modem (modulator-demodulator) is a device that modulates an analog carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. 


What is an NIU?

A device that serves as a common interface for various other devices within a local area network (LAN), or as an interface to allow networked computers to connect to an outside network.


What is an NIC?

Network interface cards, often referred to as NICs, are computer add-in cards that provide inter-networking capabilities for a specific computing solution


10/100 Ethernet cards

Used most frequently in the home or small office setting. They are capable of speeds up to 10 or 100 megabits per second.


Gigabit Ethernet

Gigabit Ethernet NICs provide network transfer speeds of up to one Gigabit per second.


Fiber Optics

Fiber optic NICs use fiber optic cabling to reach speeds of 10 gigabits per second currently.


Wireless NICs

Provide the same networking capabilities as their wired counterparts, but have their own transfer capabilities for wireless networking that allows for more freedom in computer topology and installation.



A network switch or switching hub is a computer networking device that connects network segments.


Function of segments?

The network switch plays an integral part in most modern Ethernet local area networks (LANs). Mid-to-large sized LANs contain a number of linked managed switches.



A router contains a modem and an external aerial. It is connected to a telephone line.


Give 3 reasons for using wireless networks

- To span a distance beyond the capabilities of typical cabling - To provide a backup communications link in case of normal network failure - To link portable or temporary workstations



A communications satellite is an artificial satellite stationed in space for the purpose of telecommunications.


1 - Polyethylene
2 - Mylar tape
3 - Stranded steel wires
4 - Aluminium water barrier
5 - Polycarbonate
6 - Copper or aluminium tube
7- Petroleum jelly
8 - Optical fibers