Questions

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32 questions · timed · auto-graded

Question 31 Mark
Write one advantage and one disadvantage of using Optical fibre cable.
Answer
Advantage: It is the most efficient guided transmission medium.

Disadvantage: It is the most expensive guided transmission medium.

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Question 41 Mark
Identify the following devices:

(a) A device that is used to connect different types of networks. It performs the necessary translation so that the connected networks can communicates properly.

(b) A device that converts data from digital bit stream into an analog signal and vice versa.

Answer
(a) Gateway

(b) Modem

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Question 51 Mark
What is the use of Repeater in a Network?
Answer
A repeater is a device that amplifies a signal being transmitted on the network. It is used in long network lines, which exceed the maximum rated distance for a single run.
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Question 61 Mark
Explain the following terms: OSS and ODF.
Answer
(a) OSS : Open Source Software

(b) ODF : Open Document Format

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Question 71 Mark
Why is a switch called an intelligent hub?
Answer
Switch is intelligent hub because

• Like hub it connects multiple ethernet devices.

• Unlike hub it gathers information and sends data only to intended receiver whereas

Hub broadcasts the data to all devices connected.

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Question 81 Mark
What is meant by “Denial of Service” with reference to Internet Service?
Answer
Denial - of - service (Dos) attacks are those attacks that prevent the legitimate users of the system, from accesing or using the resources, information , or capabilities of the system.
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Question 91 Mark
What is the name of the network topology in which each node is connected independently using a switch?
Answer
Star topology
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Question 101 Mark
Identify the following devices:

(i) An intelligent device that connects several nodes to form a network and redirects the received information only to intended node(s)

(ii) A device that regenerates (amplifies) the received signal and re-transmit it to its destination.

Answer
(i) Switch

(ii) Repeaters

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Question 111 Mark
What is the purpose of switch in a network?
Answer
Switches connect multiple devices on a network, similar to a hub, but with one difference- a switch transmits data only to specific device while conserving the network bandwidth.
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Question 121 Mark
Expand the following terms:

(i) WAN

(ii) OSS

Answer
(i) WAN : Wide Area Network

(ii) OSS: Open Source Software

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Question 131 Mark
What was the main objective behind developing UNICODE?
Answer
The objective behind developing UNICODE was to have single standard code for all known languages of the world.
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Question 141 Mark
State two advantages of networking computers instead of having standalone computers.
Answer
(i) Resource Sharing

(ii) Reduced Costs

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Question 151 Mark
Identify Domain name and URL from the following:

http:/www.helpingeachother.in/home/aboutus.htm

Answer
Domain name : helpingeachother.in

URL : www.helpingeachother.in/aboutus.htm

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Question 161 Mark
Give one advantage and one disadvantage of using Star topology over Bus topology.
Answer
Advantage: One connection per device thus no sharing of bandwidth

Disadvantage: Longer cable length.

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Question 171 Mark
Mr. Kavya Shastri, General Manager of United Nations Corporate recently discovered the communication between his company’s accounts office and HR office is extremely slow and signals drop quite frequently . These officers are 120 meters away from each other and connected by an ethernet cable.

(i) Suggest him a device, which can be installed in between the offices for smooth communication.

(ii) What type of network is formed by having this kind of connectivity out of LAN, MAN and WAN ?

Answer
(i) Repeater

(ii) LAN

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Question 191 Mark
Write examples of one proprietary and one Open Source Software.
Answer
Proprietary software : Microsoft Windows 7 Open source Software : Linux
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Question 201 Mark
Gyandeep International School is planning to connect all computers, each spread over distance within 40 meters. Suggest an economical cable type having high speed data transfer, which can be used to connect these computers.
Answer
Coaxial cable
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Question 221 Mark
Name the protocols which are the parts of Application Layer.
Answer
Post Office Protocol 3 (POP3), Simple Mail Transfer Protocol (SMTP), Hypertext Transfer Protocol (HTTP) and File Transfer Protocol (FTP).
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Question 231 Mark
Identify the Protocol, Domain Name and Document in the given URL:

https://www.rachnasagar.in/books.php

Answer
Protocol: HTTPS

Domain Name: Rachnasagar.in

Filename/Document: books.php

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Question 241 Mark
Name the technologies through which we can transfer the data wirelessly on short distances.
Answer
Infrared rays or Bluetooth.
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Question 251 Mark
What is IoT?
Answer
Internet of Things. It is a network of devices that can connect wirelessly to a network.
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Question 261 Mark
Define E-mail.
Answer
It is a popular way of communication on the internet. By using e-mail you can send mail to any part of the world within a few seconds.
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Question 281 Mark
Write any one advantage of network computers over the stand alone PC.
Answer
Reliable, Cost Effective or huge storage.
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Question 301 Mark
Write the full form of DNS and EDGE.
Answer
DNS - Domain Name System

EDGE - Enhanced Data rates for Global Evolution

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Question 311 Mark
What is Telnet?
Answer
It is a network protocol used on the Internet or LAN’s to provide a bi-directional interactive text-oriented communications facility using a virtual terminal connection.
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1 Marks Each - Computer Science STD 12 Humanities Questions - Vidyadip