computer information

1. Question & answer
Q 1 what is computer?
Ans: - A computer is a device that can be instructed to carry
out sequences of arithmetic or logical operations automatically
via computer programming. Modern computers have the ability to
follow generalized sets of operations; called programs. These programs
enable computers to perform an extremely wide range of tasks. A
"complete" computer including the hardware, the operating
system (main software), and peripheral equipment required and used
for "full" operation can be referred to as a computer system.
Q 2 Define web browser. Names any 10 web browser.
Ans: - A web browser (commonly referred to as a browser) is
a software application for accessing information on the World Wide
Web. Each individual web page, image, and video is identified by a
distinct URL, enabling browsers to retrieve and display them on
the user's device
1. Google chrome
2. UC browser
3. Firefox browser
4. Slimjet Browser
5. Internet explorer
6. Opera browser
7. Safari web browser
8. Maxthon browser
9. Nat scape browser
10. Slim browser

2. Q 3 difference between ram and rom.
Ans: -
BASIS FOR
COMPARISON
RAM ROM
Basic It is a read-write memory. It is read only memory.
Use Used to store the data that
has to be currently
processed by CPU
temporarily.
It stores the instructions
required during bootstrap
of the computer.
Volatility It is a volatile memory. It is a nonvolatile
memory.
Stands for Random Access Memory. Read Only Memory.
Modification Data in ROM can be
modified.
Data in ROM can not be
modified.
Capacity RAM sizes from 64 MB to
4GB.
ROM is comparatively
smaller than RAM.
Cost RAM is a costlier memory. ROM is comparatively
cheaper than RAM.
Type Types of RAM are static
RAM and dynamic RAM.
Types of ROM are PROM,
EPROM, EEPROM.

3. Q 4 Define search engine. Name any 10 search engine.
Ans. A program that searches for and identifies items in a database
that correspond to keywords or characters specified by the user, used
especially for finding particular sites on the World Wide Web.
1. Google
2. Bing
3. Ask.com
4. Yahoo
5. AOL.com
6. Baidu
7. Internet archive
8. Yandex.com
9. Welframalphia
10. Duck Duck go
Q 5 Define data cable.
Ans:- A data cable is any media that allows baseband transmissions
(binary 1,0s) from a transmitter to a receiver. Examples Are:
Networking Media. Ethernet Cables (Cat5, Cat5e, Cat6, Cat6a) Token
Ring Cables (Cat4)
Q 6 Write short note on VGA cable.
Ans: - A Video Graphics Array (VGA) connector is a three-row 15-pin
DE-15 connector. The 15-pin VGA connector was provided on many
video cards, computer monitors, laptop computers, projectors, and
high definition television sets. On laptop computers or other small
devices, a mini-VGA port was sometimes used in place of the full-sized
VGA connector.Many devices still include VGA connectors, although
VGA generally coexisted with DVI as well as the newer and more
compact HDMI and Display Port interface connector.

4. Q 7 write short note on LAN cable.
Ans: - A local area network (LAN) is a computer network that
interconnects computers within a limited area such as a residence,
school, laboratory, university campus or office building.[1] By contrast,
a wide area network (WAN) not only covers a larger geographic
distance, but also generally involves leased telecommunication circuits.
Ethernet and Wi-Fi are the two most common technologies in use for
local area networks. Historical technologies include ARCNET, Token
ring, and AppleTalk.
Q 8 Difference between parallel port and serial port.
Ans: - The main difference between a serial port and a parallel port is
that a serial port transmits data one bit after another, while a parallel
port transmits all 8 bits of a byte in parallel. ... Computers have both
serial and parallel ports along with newer technology called a USB
(Universal Serial Bus) port.
Q 9 write short note on USB Port.
Ans: - USB (abbreviation of Universal Serial Bus) is an industry
standard that establishes specifications for cables, connectors
and protocols for connection, communication and power
supply between personal computers and their peripheral
devices.[3] Released in 1996, the USB standard is currently maintained
by the USB Implementers Forum (USB IF). There have been three
generations of USB specifications: USB 1.x, USB 2.0 and USB 3.x.
Q 10 Define HDMI port and Sound card.
Ans: -
1. HDMI PORT : - HDMI (High-Definition Multimedia Interface) is a
proprietary audio/video interface for transmitting uncompressed

5. video data and compressed or uncompressed digital audio data
from an HDMI-compliant source device, such as a display
controller, to a compatible computer monitor, video projector,
digital television,
2. A device which can be slotted into a computer to allow the use of
audio components for multimedia applications.
Q 11 Difference between LAN, WAN, and MAN.
Ans: - A LAN (local area network) is a group of computers and network
devices connected together, usually within the same building. By
definition, the connections must be high speed and relatively
inexpensive (e.g., token ring or Ethernet). Most Indiana University
Bloomington departments are on LANs.
A LAN connection is a high-speed connection to a LAN. On the IUB
campus, most connections are either Ethernet (10 Mbps) or Fast
Ethernet (100 Mbps), and a few locations have Gigabit Ethernet (1000
Mbps) connections.
A MAN (metropolitan area network) is a larger network that usually
spans several buildings in the same city or town. The IUB network is an
example of a MAN.
A WAN (wide area network), in comparison to a MAN, is not restricted
to a geographical location, although it might be confined within the
bounds of a state or country. A WAN connects several LANs, and may
be limited to an enterprise (a corporation or an organization) or
accessible to the public. The technology is high speed and relatively
expensive. The Internet is an example of a worldwide public WAN.
Q 12 Name any for Optical devices.
Ans:-
1. Disc.
2. Drive
3. Reader
4. Mouse

6. Q 13 Difference between Website and E-commerce.
Ans: - In normal website you can able to showcase your details and
show the information but in ecommerce website you will get complete
freedom for selling online this will be fully dynamic website here you
can manage all the things from your admin panel like orders products
,banners , inventory , payment , logistics everything you can manage
on your ecommerce website .
Q 14 Write benefit of www.
Ans: -
 Improves handwriting: Firstly, your handwriting improves. ...
 Creators of thoughts: Writing on a paper gives you creative thoughts,
instead of typing. ...
 Better for learning: ...
 Creativity: ...
 Improves professionalism: ...
 Increases mind functioning: ...
 Creates an employment option:
Q 15 Write short note on PPC (Pay per Click).
Ans: - PPC stands for pay-per-click, a model of internet marketing in
which advertisers pay a fee each time one of their ads is clicked.
Essentially, it’s a way of buying visits to your site, rather than
attempting to “earn” those visits organically.
Search engine advertising is one of the most popular forms of PPC. It
allows advertisers to bid for ad placement in a search engine's
sponsored links when someone searches on a keyword that is related
to their business offering. For example, if we bid on the keyword “PPC
software,” our ad might show up in the very top spot on the Google
results page