Can someone please help me answer these advanced internet functionality questions?

Question

Please answer them in the simplest way that's easy to understand.

1. What is a bandwidth?
2. What are internet connection types?
3. What is a screen resolution?
4. What's an image resolution?
5. What's an authentication?
6. What is Cache?
7. What are things that would make a web page take too long to load?
8. How does image size and resolution affect how long it takes a web page to load?
9. How does bandwidth affect a website?
10. What are the different types of caching?
11. What is meaningful content on a web site?
12. What is navigation and how can you make sure you have “good” navigation on your web site?

Answer 1

1. Bandwidth is the amount of data a connection can transfer per unit time (generally in bits/second).

2. Internet connection types are different ways a computer/LAN will connect to an ISP or NSP. Examples are dial-up, cable, DSL, ISDN, and T1.

3. Screen resolution is the size of a display in pixels.

4. Image resolution is the size of an image in pixels

5. Authentication is a way of a person/computer to securely identify himself to a computer

6. Caches are stored bits of information that can be retrieved faster than the original source

7. Slow server, lots of dynamic content, many images, too many users for the server

8. Generally, the higher the resolution, the larger the image size. The larger the image size, the longer it takes to download and load the web page

9. The more bandwidth a server has, the more clients it can serve at the same time. The more bandwidth a user has, the faster he can access a web page

10. There is server-side caching, which will store dynamically-generated content as a static page. This means the server does not have to access databases, etc. and can deliver the content much faster. There is client-side caching, where a browser will store images and such locally so it does not have to download them every time it visits a web page

11. The primary content that the user is in.

12. Navigation is how a user gets around your website. "Good" navigation means it is easy to find other parts of the webpage.

Answer 2

1)



Bandwidth can mean two related things.

a) Bandwidth speed = the maximum *rate* of data that can flow. For example, 1 MByte per second would be fast for a home user's internet connection. It can apply to any network, including the internet.

b) Bandwidth allocation - this is often used to measure total amount of data that has passed through a connection. For example, you as a home user probably have a monthly download limit which if you exceed you'd either be cut off or be billed for more.



2) Internet connection types involve different hardware and software and have their own advantages and disadvantages. Some examples are dial-up, broadband, leased line, ISDN, cable.



3) Screen resolution is the number of "pixels" that are used to display the picture. It is usually measured in terms of pixel height and width for example, a small monitor might be 600 by 400 pixels, and a larger one 1200 by 1600. The higher the number of pixels, the more detail can be shown.



4) Image resolution is the number of pixels in the image. Often a camera's pixels is measured in the total number of pixels, e.g. 6 Megapixels (6 million pixels). The higher the resolution, the more detailed the picture can be



5) Authentication is a process by which a user validates him/her/itself with a computer system, so that the system knows that the user has privileges to access certain data.



6) A cache is temporary storage, sometimes to help remove bottlenecks in systems, sometimes to save repeating processing by saving the results, sometimes to save downloading web pages unnecessarily (e.g. if they haven't changed). etc



7) Large high resolution images, videos, and sound effects.



8) The larger the image size and resolution, the larger the file will be, therefore the longer it will take to download.



9) If a website does not have enough bandwidth, when too many users try to access it, some will not get through, and it will become slow for most users.



10) See number 6



11) Something which is useful to people. Something they might search for. Something people have trouble finding reliable information about, or special offers, products and services



12) It should be easy to get to any page on the site from any other page on the site. The navigation links should be clear, and their text informative about what the link goes to. Consistency is important so that the users easily recognise the method of navigation from page to page.

Answer 3

1. The connection speed (amount per unit time, like mbps).

2. That's ambiguous (to make a gross understatement), but dial-up and broadband? Which consists of DSL, cable and satellite as the most common ones.

3. The number of pixels in each direction on the screen - 1024X768 or 1280X1024. (Or a lot of other possibilities.)

4. The number of pixels in each direction in an image. A 1024X768 image will just fully fill a 1024X768 screen.

5. Verifying identity. That could be you showing an ID card at a guarded doorway, logging into a website, the server automatically asking your computer to prove that it;s the computer it claims to be ...

6. Local temporary storage. Your pocket is a cache for things. It can be storage for the web browser, for the CPU (the main chip in a computer) or, really, any data.

7. Only 2 things - a slow connection or a huge (in terms of the amount of data on it) web page. (O'm not going to bash Microsoft by mentioning how slow JScript runs on their browsers.)

8. The larger the image resolution, the more bits there are, so the longer it takes to load. The larger the image file size, the longer it takes to load.

9. Lower bandwidth (slower speed - same thing) means ... well, slower speed.

10. Regarding what? Web caching? CPU caching? Other types? There's caching all over a computer.

11. Stuff with meaning. The green corsshatch on this page has no meaningful content.

12. Navigation refers to getting from one page to another (or from one place on a page to another place on the same page). Good navigation is navigation that's easy to use and apparent to the user. (A link that says "database" isn't good. One that says "Sign up for a free account" is much better.)

Answer 4

Wild Bloom has it for ya. Too bad I'm not level 2, or i'd give a thumbs up. The only other thing I'd try is to turn off the wii and both computers, then turn off the modem. Wait at least one minute, then turn on the modem. Once all the lights on the modem are steady, then turn on the PC directly connected (thru wires), wait a minute or two, then turn on the PC connected wirelessly, and lastly the wii. Also, when you log in to your router, check the DHCP settings and make sure that there is more than one address available, or else only one client (i.e. machine) will be able to connect. I'm just going on a hunch here, but it sounds like a DHCP issue, although you should definitely try power cycling everything first. First three rules of trouble-shooting are 1) is it plugged in? 2) is it turned on? 3) does restarting solve the problem?