Module 5 Flashcards
How the Router facilitates the connections of networks?
By being connected by all computers, each computer through the router can get to any other computer of the network.
Explain the Ethernet.
It’s the hardware and protocols of wired connection. All the specification agreed upon that make the wire are part of the ethernet.
What is a workstation?
A workstation is a computer that is typically used for some type of technical or scientific work. The name emerged from the computers that are the terminals of mainframes.
What is the relation of terminals (workstations) and mainframes?
The mainframe process the data and the terminal is a workstation where someone can request the mainframe to do something.
Describe the route of the request from your computer through the internet to access a website.
Resquest a website through a webrowser -> the modem modulates the request and send it to the router -> the router send the request to the ISP (internet service provider) -> ISP uses DNS (domain name system) to identify the host and request the website-> the website file is returned.
Who gives out digital certificates?
A CA - Certificate authority.
What is a digital certificate?
Evidence that a website is secure to uses.
How can you know if a website has a digital certificate?
- The website has an “s” (for secure) after “http”.
- Browser can verify if a site has a certificate.
What encrypt means?
To encode information in a way it can’t be undertood by regular means.
What SSL stands for?
Secure Sockets Layer.
What is TSL and what it stands for?
TSL is the evolution of SSL - Transport Layer Security.
What is SSL?
A protocol for encrypting information on computer networks. A site can have a certificate that it properly applies the protocol.
What is the “Handshake”?
A handshake is when two things (computers, machines, etc.) establish a connection.
How the internet provider verifies if a handshake can happen when using https?
- The ISP first verify if the webserver has a certificate file that allows the webserver to use the https protocol.
- If the computer has the certificate file, the ISP verifies with a CA if it is a real one.
- If it is a real one, then the request is delivered to the webserver.
What the word dynamic means?
Dynamic refers to actions that take place the moment they are needed, rather than in advance. A restaurant that prepares your food to your specifications, when you order, would be dynamic.
What dynamic means in computers?
The computer processes your request right when you ask it to.
What DHTML stands for?
Dynamic HyperText Markup Language.
What is DHTML capable of?
Can modify the HTML that was used in the browser without having to replace the HTML file on the web server.
What is Optics?
The sutdy of visible and invisible light.
What is Fiber opctics?
A physical cable that can be used to transfer information over long distances.
What is the advantage of Fiber opctics?
The information travels at the speed of light.
What is a Home page?
Is the main web page on a website?
What is the common name for the file of the Home page and why?
index.html, because serves are programmed to utilize this files as landing pages.
What is a script?
computer instructions that automates a task so that a multi-part task can occur without your involvement. Allows dynamic content on webpages.
What are scripting languages?
Languages used to make sripts.