Sambotta High School
Syllabus of Class 10, Sub: Computer
Concept
Chapter
7: Networking Principles and Communication
1. What is computer communication?
Ans:
Computer communication is engineering discipline concerned with communication
between computer systems or devices.
- What is computer network?
Ans:
Computer network is a collection of distributed, intelligent machines that
share data and information through interconnected lines of communication.
3.What are computer network services?
Ans.
Computer network services are the things that a network can do such as:
a.
File
services
b.
Print
services
c.
Message
services
d.
Application
services
e.
Database
services
4. What is a computing model?
Ans:
Computing modes is a design specification for how the nodes on a network interact
or communicate.
5.What is a peer-to-peer networking?
Explain with example.
Ans:
Peer-to-peer networking is a group of computers that function both as a Client
and a server.
Peer-to-peer networks include the
function of both service roles in a single machine. It has no central point of
control, relying on the peers to perform the various functions for each other.
Some of the Peer-to-peer operating systems are MS Windows 95, MS Windows for
workgroups, MS Windows NT etc.
6.What is the difference between LAN
and WAN?
The
main difference between LAN and WAN are:
LAN
a.
Diameter
or distance is not more than a few kilometers.
b.
A
total data rate of at least several Mbps
c.
Complete
ownership by a single organization
d.
Very
low error rates
WAN
f.
Span
entire countries
g.
Data
rate less than 1Mbps(Megabits per
seconds)
h.
Owned
by multiple organization
i.
Comparatively
higher error rates
7.write short note on:
a. Local
area network.
Ans:
Local Area network is self contained network that spans a small area such as a
single building, floor or a room. LANs typically comprise only one transmission
media type such as coaxial cable or twisted pair. Comparatively LAN provides
high speed communications because LANs use one kind of cable which generally is
limited to 5KM or less. LAN hardware gives the system its processing
communications, system fault tolerance, and most important connectivity.
b. Metropolitan
area network.
Ans: Metropolitan area network is a network
that interconnects users with computer resources in a geographic area or region
larger than that covered by a large local area network but smaller that the
area covered by a WAN. MAN rarely extend beyond 100KM so they have somewhat
slower data communication rates than do LANs because of their reliance on
unbound media over great distances.
c. Wide
area network.
Ans:
Wide area network is a telecommunications network, usually used for connecting
computers, that spans a wide geographic area. WAN can be used to connect
cities, states, or even countries. Typically, it will employ communications
circuits such as long-distance telephone wires, microwaves and satellites. The
Internet is single largest global wide area network.
d. Function
of gateways
Ans:
Gateways is a network device that connects dissimilar networks with different
protocols. Gateways are required when network messages travel between two
entirely different systems. The gateway need to read the network address,
reconfigure the packet protocols from IPX (Internetwork Packet Exchange) to SNA
(System Network Architecture), translate the operating software, and in most
cases, completely rewrite the data alphabet.
8. What
is protocol? Make a list of different protocol.
Ans:
Protocol is the set of rules and procedures that govern the transmission of
messages over a physical networking medium.
A
list of different protocols is given below:
a.
Internetwork Packet Exchange/Sequence packet exchange (IPX/SPX)
b.
Transmission Control Protocol/ Internet Protocol (TCP/IP)
c.
AppleTalk for Macintosh computers etc.
9.
What is Ethernet?
Ans:
Ethernet is a physical and data link layer technology for local Area Network.
10. What is ARC net?
Ans:
ARCNet is widely-installed local area network technology that uses a token-bus
scheme for managing line sharing among the workstations and other devices
connected on the LAN.
11. What is a token? What is token
passing protocol?
Ans:
A token is a special series of 24-bit packet that travels around a token-ring
network.
Token passing protocol
is a channel access method where a signal called a
token
is passed between nodes that authorize the node to communicate.
12. What is ring topology? Illustrate
with figure.
Ans:
Ring topology is a circular loop of point-to-point links
which
connects directly through an interface device or drop?
cable.
Figure of ring topology is illustrated below:
13. What is hub? What are the benefits
of star topology?
Ans:
A hub is a device with multiple ports that allow network devices to be
connected together.
The
benefits of star topology are:
a.
Relatively easy to configure
b.
Easy to troubleshoot.
c.
Media faults are automatically isolated to the failed segment.
14. Make a list of media connecters?
Ans:
A list of media connecters are:
a.
BNC T-connector for Thin Coaxial Cabling
b.
RJ-45 connecter for UTP (Unshielded Twisted pair)
15. What is Internet?
Ans:
The Internet is a global network of over a million of smaller heterogeneous
(dissimilar) computer networks.
16. Write the full forms
of:
a.
UTP:
Unshielded Twisted Pair
b.
STP:
Shielded Twisted Pair
c.
TCP/IP: Transmission Control Protocol/ Internet
Protocol
d.
ARC
Net: Attached Resource Computer Network
e.
IPX/SPX:
Internetwork Packet Exchange/ Sequence Packet Exchange
f.
NIC:
Network Interface card
g.
AM:
Amplitude Modulation
h.
PM:
Phase Modulation
i.
FM:
Frequency Modulation
Chapter: 8
Concept of the Internet
- Describe in short about the origin of Internet.
Ans:
The Internet originated from an experimental network called ARPANET created in
1969 by the U.S. Department of Defence’s Advanced Research Projects Agency or
ARPA. Later on in 1983, ARPANET split
into the MILNET (for military network), which served the defense community and
the ARPANET, which served the research and education community. It became a
network of networks globally expanded and growing day by day to infinite size
of its growth.
- What are the components required to connect to the internet.
The
components required to connect to the internet are given below:
i.
A
computer, a modem and a telephone line.
ii.
Internet
access software and Internet application software
iii.
Locate
an Internet Service Provider(ISP)
- Name any five services provided by Internet.
Any
five services provided by Internet are:
i.
World
Wide Web(WWW)
ii.
Electronic
Mail(e-mail)
iii.
Chat
iv.
Video Conferencing
v.
E-Fax
4. What is video conferencing? Where is it
applied?
Ans:
video conferencing is the transmission of image/video and speech/audio back and
forth between to or more geographically dispersed persons. It is applied for
visual communication as a purpose of teaching, learning and face to face
conferencing for many purposes.
5. What is chat? What is its advantage?
Ans:
Chat is an online interactive communication mechanism that lets people to make a real time discussion with one or
mere people through the Internet. Its advantage is to communicate with each
other or online conversations by typing. User can also log into chat rooms to
exchange comments and information about the topics addressed on the site.
6. What is an URL? What is the
advantage of knowing URL address?
Ans:
Uniform Resource Locater (URL) is an address that identifies the location of a
Web page on the Internet. The advantage of knowing URL address is to view
websites which allows for the item attached to it to be codified and that
allows folks using the internet to access the information to the users’
computers.
7. What is TELNET? How can you login
your computer from distance? Explain
Ans:
TELNET is a protocol that allows user to connect to remote computers (hosts)
over a TCP/IP network such as Internet.
We
can login our computer from distance by accessing a remote host, after properly
connecting and logging into the remote host, the user can enter data, run
programs or do any other programs.
8.Write the full forms of:
j. SMTP: Simple
Mail Transfer Protocol
k. HTTP: Hypertext
Transfer Protocol
l. WWW: World Wide Web
m. HTML: Hypertext
Markup Language
n. TCP/IP: Transmission
Control Protocol/ Internet Protocol
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