Ghazna Khon

𝐌𝐒 𝐖𝐢𝐧𝐝𝐨𝐰𝐬 𝐌𝐮𝐥𝐭𝐢𝐩𝐥𝐞 𝐂𝐡𝐨𝐢𝐜𝐞 𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧𝐬 & 𝐀𝐧𝐬𝐰𝐞𝐫𝐬

Question: 1
The time for which a piece of equipment operates is called
(A) Access time
(B) Real time
(C) Seek time
(D) Effective time
Ans: D
Effective time

Question: 2
Various applications and documents are represented on the
Windows desktop by
(A) Graphs
(B) Labels
(C) Icons
(D) Symbols
Ans: C
Icons

Question: 3
When a computer prints a report, this output is called _____
(A) Program
(B) Ex*****on
(C) Soft copy
(D) Hard copy
Ans: D
Hard copy

Question: 4
The blinking symbol which indicates the next character will
appear at which place, is called
(A) Return key
(B) Control key
(C) Delete key
(D) Cursor
Ans: D
Cursor

Question: 5
Applications are often referred to as _____
(A) the operating system
(B) system software
(C) executable files
(D) data file
Ans: C
executable files

2 Server-side vs. Client-side

Key Points...

o) The World Wide Web is built on a number of different
technologies.

o) For most users, the web starts and ends with their choice of
web browser. The browser is said to define the client-side of
the web, with the browser, the computer it is running on, and
the user surfing the web being collectively referred to as the
client.

o ) Consider a client who has decided to visit the web site at
www.google.com. The first thing that happens is that the client
will make a request to Google’s web server for the default
page of that web site.

o) The web server is an application running on a computer
owned by Google. Like the client, the server application and
the computer on which it runs define the server-side of the
web, and are collectively referred to as the server.

o ) When the server receives the request from the client for a
particular page, its job is to retrieve the page from the
computer’s files and serve it back to the client. In many cases,
this operation is a very simple procedure involving little or no
work on the part of the server.

o) However, using a programming language like PHP, Perl or
Java, we can cause the server to either modify the page it finds
before it passes it back to the client, or even to generate the
page entirely from scratch. This is referred to as a server-side
application. The page passed back to the client looks (to the
client) exactly the same as any other page that has not been
modified.

An example of a server-side application might be to insert the
current date and time into a page. This would mean that each
time the page was requested (say, by using the browser’s
refresh button), a new time value would be added to the page.

o) Once the client has received the page from the server, it
displays the page and waits for the user to request another
page. As soon as the page reaches this state, it has moved
beyond the control of the server. No server-side application
can now alter the contents of the page without the client having
to make another trip back to the server to get a new (and
possibly updated) copy of the page.

o) However, all modern browsers allow for the running of client-
side applications. These are small applications which are
embedded within the HTML code of the page itself.

o) Server-side applications ignore any client-side applications
that they find while modifying pages to send to the client, so in
general the two types of application cannot easily “talk” to
each other.

o) However, once the client has received a client-side
application, it can begin to modify the page dynamically,
without the need to go back to the server.

o) An example of a client-side application might be a clock on a
web page that updated every second.

o) An unfortunate side effect of client-side applications is that all
the code must be sent to the client for running, which means
that the application’s inner workings are available for anyone
to see. This makes it impractical for checking passwords, or
doing anything else that could cause confidential information
to be released into the wild.

o) In addition, all modern web browsers afford the user the
opportunity to switch off client-side applications altogether.
On top of this, the way the same client-side application is run
will vary from browser type to browser type.

o) Despite these drawbacks, client-side applications (or scripts,
as they are better known due to their general brevity) remain
the best way to provide web users with a rich environment
when developing web applications.

o) In short, the two technologies each have their strengths and
weaknesses:

o) Client-side scripts allow the developer to alter pages
dynamically, and to respond to user actions immediately rather
than having to wait for the server to create a new version of the
page. However, there are security and cross-browser
compatibility issues to be aware of, and these are often non-
trivial.

o) Server-side applications allow the developer to keep her code
secure and secret, thus allowing for more powerful
applications to be created. In addition, since the server running
the code is always a known quantity, applications that run
successfully in one browser will run successfully in all
browsers. However, despite all this power, there is no direct
way for a server-side application to alter a page without
having to force the client-side to load another page. This
makes it completely impractical for things like drop-down
menus, pre-submission form checking, timers, warning alerts
and so forth

Google

1 What is a Programming Language?

Key Points..

o ) A programming language is a set of codes that we can use to
give a computer instructions to follow.
o ) Popular and well-known programming languages include Java,
C++, COBOL, BASIC, LISP and more. Most popular
programming languages consist of words and phrases that are
similar in form to the English language.
o) A well-written program will be easily readable by anyone with
a little programming experience, regardless of whether they
have any direct experience of the language in question. This is
because modern programming languages share a large number
of common concepts. In particular, they all have a notion of
variables, arrays, loops, conditionals, and functions. We will
meet these concepts again in more depth later in the course.
o) Traditionally, programming languages have been used to write
(for the most part) “stand-alone” applications. Things like
Microsoft Word, Mozilla Firefox and Lotus Notes are all
examples of such applications. Once installed on a PC, these
applications run without necessarily requiring any other
software to be installed alongside them.
o) Web Applications differ from these traditional applications in
many respects, but the most striking is that they all run inside
your web browser. Examples of popular web applications are
things like Google, Hotmail, Flickr, GMail and any of the vast
array of “weblogging” systems.

o ) These applications are also written using programming
languages, but as a rule they are built using multiple,
interdependent technologies. These technologies are easily
(though not completely) broken down into two categories:
server-side and client-side.

THE DIFFERENCE B/W CODING AND PROGRAMMING
Best explanation
👇👇👇👇👇👇

All programming is coding, but not all coding is programming.

For example, this is coding, but not programming:
About Coding

This is both programming and coding:
let number = 0;
for(let i = 0; i < 10; i++){
number += i;
}

So "coding" is writing code/text which makes the computer do something, while "programming" is writing code/text which makes the computer do something and uses some kind of algorithm/logical construct etc.

All types of files extensions

Html form more Inputs

😜😜😆

Html is just structure (body) of webpage
And Css Is For To style and design our Webpage

Example

Working with Node's Express