3.4 Internet & Intranets Flashcards
What is the internet?
A network of computers linked together using a variety of communications technologies such as cables and wireless transmission. The internet does not contain information but provides transport links for information to pass between computers.
What is the WWW?
World Wide Web - this is an application which runs on the internet and is the largest and most used service on the internet.
What is an intranet?
A private network website which is only available to employees or members of an organisation, school or college. The website is usually stored on a file server which belongs to the organisation. Members can access the website from within the LAN and sometimes from home.
What protocol does an intranet use?
TCP/IP (Transmission Control Protocol / Internet Protocol), the same as the WWW.
On a school intranet, state 3 things a teacher can do and 3 things a student can do.
Teacher:
• Develop departmental websites containing notes about topics being studied, homework, and provide test feedback.
• Communicate with pupils and other staff using the email facility.
• Share resources with other teachers.
Student:
• Use the notes and materials to work independently.
• Communicate digitally with teachers about problems or difficulties.
• Email homework to teachers.
What’s a major advantage of an intranet?
Once information is uploaded, it can be viewed by everyone within the organisation at any time.
What is an ISP?
Internet Service Provider - this sells internet access to companies or individuals. It provides web servers which connect to the search engines on the internet.
List some of the typical services provided by an ISP.
- Variety of bandwidth options
- Email service
- Security package (protection against hacking, viruses, spyware and identity theft)
- Online and telephone assistance
- Junk mail blocker
- Pop-up ad blocker
- Website filtering
- Telephone package
- Mobile broadband.
In order to make use of an ISP, what must the user do?
Install the software for that ISP on their PC. This enables the PC to communicate with the modem/router provided and ensures it connects to the correct internet file server. This software comes on a CD-ROM and will install automatically.
What does browser software do?
Allows users to view and use the web pages on the internet.
Describe an address bar.
Allows the user to enter the web address or URL of the website they wish to visit.
Describe the navigation bar.
Allows the user to navigate between the web pages visited.
• Back and Forward buttons
• Refresh
• Home
What is a tab?
A feature which allows users to browse a number of web pages in the same browser without opening a new browser window.
What does the accelerator icon do?
Reduces the number of clicks required to do a particular task, making navigating the internet faster.
Define bandwidth.
Measured usually in kilobits, megabits or gigabits per second, it states the rate at which data travels along a communications line. The higher the bandwidth the quicker the data will travel along the line.
