Page 105 - PYTHON-12

65. Write full form of the following terms:
(a) LAN (b) WAN
(c) MAN (d) SMTP
(e) TCP/IP (f) VoIP
(g) URL (h) HTTP
Ans. (a) LAN – Local Area Network (b) WAN – Wide Area Network
(c) MAN – Metropolitan Area Network (d) SMTP – Simple Mail Transfer Protocol
(e) TCP/IP – Transmission Control Protocol (f) VoIP – Voice over Internet Protocol
(g) URL – Uniform Resource Locator (h) HTTP – Hypertext Transfer Protocol
66. Differentiate between web browser and web server.
Ans. A web browser is a software used to access the internet, for example, Google Chrome, Microsoft Edge, Mozilla
Firefox, etc.
A web server is a software which entertains the request(s) made by a web browser, for example, Apache,
Microsoft IIS.
67. Identify the protocols:
(a) Used to send emails
(b) Used to send voice, video and data over the internet
(c) It breaks down the original message into packets
(d) Used to login to a remote machine
(e) Used to exchange files over the internet
Ans. (a) SMTP (Simple Mail Transfer Protocol)
(b) VoIP (Voice over Internet Protocol)
(c) TCP (Transmission Control Protocol)
(d) TELNET
(e) FTP (File Transfer Protocol)
68. Differentiate between Hub and Switch.
Ans. Hub is a networking device used to connect multiple computers and broadcast the message to all computers
connected to it. A Switch is also used to connect multiple computers in a network but Switch is an intelligent
hub as it transfers message only to the intended computer.
69. Give examples of guided and unguided mediums of data transmission.
Ans. Examples of Guided or Wired medium – Twisted pair cable, Co-axial wire, Optical fibre cable.
Examples of unguided or wireless medium – Radio waves, Microwaves, Infrared, Satellites.
70. Identify the network topology:
(a) Each node is connected to a single backbone cable.
(b) Each node is connected to a central device.
Ans. (a) Bus topology (b) Star topology
71. Define the following terms:
(a) Website (b) Web page
(c) Home page (d) Web server
Ans. (a) Website: A website is a collection of various web pages, images, videos, audios or other kinds of digital
assets that are hosted on one or several web servers.
(b) Web page: A web page is an electronic document/page designed using HTML. It displays information in
textual or graphical form. A web page can be static or dynamic.
(c) Home page: The first page of a website is known as home page, where all the links related to other
documents are displayed.
(d) Web server: A web server is a program that runs on a computer connected to the internet. It is a server
that stores web pages and responds to the requests made by web browsers.
72. Differentiate between IP address and MAC address.
Ans. IP (Internet Protocol) address uniquely identifies the devices on a network while MAC (Media Access
Control) address is used to identify the physical address of the computer. IP address is assigned by
ISP (Internet Service Provider) while MAC address is assigned by manufacturer.
73. Name the device used to connect dissimilar networks.
Ans. Gateway.

Appendices A.33